yacht devices circuit control

Switch Control - NMEA 2000 Switch Control for Digital Switching - YDSC-04

Regular price $159.00

Switch Control YDSC-04

The Switch Control allows viewing of the state and the management of four channels of an NMEA 2000 switch bank from the connected buttons with LED indicators.

It is designed to work in tandem with   Circuit Control YDCC-04   (contains four latching relays) and is compatible with other NMEA 2000 digital switching devices managed by standard NMEA 2000 PGNs 127501 and 127502.

The Device has terminals for connecting four momentary push buttons with an LED indicator. External buttons are not supplied with this device; you can choose any to match your boat's interior ( see the Manual  for recommendations).

The   Circuit Control   and Switch Control are designed to be compatible with   Oceanic Systems , Offshore Systems, Chetco Digital,   Maretron   (see p.27 in   the Manual ) and Carling Tech displays and relay modules, and with other NMEA 2000 digital switching devices managed with standard NMEA 2000 PGN 127501 "Binary Status Report" and PGN 127502 "Binary Switch Control".

You can also manage loads connected to the   Circuit Control   from most   modern chart plotters with CZone support .

Product benefits:

• no special requirements for buttons, you can choose any momentary push buttons to match your boat's interior (see   p.19 in the Manual );
• special   "split mode" to control two Circuit Control   units;
• no special knowledge, software or hardware is required for installation;
• price and size are suitable for small vessels;
• pure NMEA 2000 product, compliant to the Standard and   certified by NMEA ;
• support firmware updates,   free software for PC   is available ( Wi-Fi   or   USB Gateway   is required).

Deal of the day

Yachting Monthly

• Digital edition

Digital Switching: controlling your yacht from your phone

• Sam Fortescue
• December 5, 2022

How do you make your boat easy to control, from any screen on board or even remotely and save weight? Sam Fortescue talks us through digital switching

Just imagine this. As you graze a sandwich at your desk one Friday, you flick open an app on the phone to check what the wind is doing on the mooring. The boat briefly fires up the instruments to give you real-time data, before powering them down again. A balmy 12 knots, just as forecast. It’s the green light for a weekend sail.

As you jump on the train down to the marina, you fire up the app again, checking battery and fuel levels. There’s still a trickle of power coming out of the solar panels, and the wind turbine is doing its job in the breeze, so no need to start the generator yet. You switch the fridge on instead – it’ll be down to temperature by the time you arrive.

Checking another app shows that the tender is just where it should be in the dinghy dock, with the outboard also present and correct. It’s only a few hundred metres upstream to the mooring – an easy ride for the electric outboard. As you round the last bend in the trot, you press a button on the key fob. Lights in the cockpit, rigging and at the transom wink on, and the instruments spring to life.

The multimedia unit starts piping the relaxing tones of your favourite song into the cockpit, and the alarm is deactivated. The bathing platform lowers into position for an easy landing.

Well, imagine no longer, because all this is already possible.

It might sound far-fetched, but boats are already being built with these capabilities, thanks to digital switching and remote monitoring. And, as with most innovations at sea, they are trickling down from the elusive world of superyachting.

The digital switching screen on the Bavaria C50 gives control over a whole range of systems

Digital Control

If you buy a new boat today, the chances are it contains some form of digital switching. More than just a different sort of on/off button, it is a powerful way to control boat systems that is built around a flexible network. Or, as Nick LaRoche of US-based PowerPlex describes it: ‘Fuses, mechanical circuit breakers and switches are replaced by a digital switching power distribution system that runs on a CAN (Controller Area Network) bus network.’

Now, weight is a clear benefit of digital switching, in that you don’t need hefty two-pole wire runs between switch panels, toggle switches and the equipment itself. The switch can be anywhere and the unit can be anywhere as long as they’re all plugged into the CAN bus. In effect, you simply need a 12V/24V ring main and a CAN bus backbone running around the boat.

Digital switch modules located near the equipment itself then plug into power and network with very short cable runs. On a 30-50ft sailing boat, the saving in copper alone amounts to tens of kilograms, even including the extra weight of the control modules.

Growing list of advantages

In the early days of this technology, it was thought that factors such as weight and space were chief among the key advantages. Brands such as New Zealand’s C-Zone (now a Brunswick brand alongside B&G) and Sweden’s Empirbus (Garmin), grew on the back of such claims.

‘Our main benefits used to be related to weight and space saving, installation time saved for builders,’ says Mark Harnett of C-Zone, one of the three major digital switching brands for boats. ‘But this message has changed in recent years to ease of use.’ That’s because each element in a digital switching network is independent and can be programmed to behave in whatever way you wish. You can set dimmers, time switches, high and lower power actuators. The touch of a single button could set multiple actions in motion – creating a mood on board, or readying the boat for sea or swimming.

Turn on the lights before you arrive at your boat. Photo: Morten Strauch

Similarly, the displays that provide the user interface are very flexible. You can install a dedicated display from C-Zone, Empirbus or similar. Or you can just use your existing plotter.

Manufacturers like B&G, Raymarine and Garmin have all built support for digital switching into their multifunction displays, so you can be panning through charts one moment and putting on the navigation lights the next – all from the same touchscreen display.

This is a very efficient way to provide digital controls, especially in a scenario where the boat already has more than one display – perhaps at the chart table and at the helm. ‘The cost of displays and control units at the dash or chart table can be reduced, as CZone can control things like power electronics and batteries, monitor tanks, control audio and heating/aircon,’ says CZone’s Harnett. ‘This can remove multiple redundant controllers and allow interaction between these devices, at the same time the user gets the benefit of a single user interface to learn, instead of having to get to grips with multiple.’

Numerous long wiring runs add significant weight to a boat, which CAN bus switching can mitigate.

Getting digital switching

This technology is very much a means to an end, a tool that is perhaps not often glimpsed in its own right. If you look behind the scenes of Hanse and Moody sailing boats, you’ll find C-Zone switching. Oyster yachts and the composite wizards at McConaghy also use it.

This breadth of use from production yachts to custom one-offs is possible because the system is modular, so it can be as complex or as simple as you need. The first hint you’re likely to get that a boat features the technology is from the control panel or plotter. If there is a natty-looking display with touchscreen switches, then you’ve got it.

For the rest of us, there is a refit route to digital switching which can make sense, ‘especially if you are doing a more extensive electrical systems refit’, according to C-Zone’s Harnett. For smaller boats, there are entry-level modules at lower costs.

For CZone, that means the Contact 6 (£380), which is able to switch six different loads on or off up to 7.5 amps. In addition to the control screen on the MFD, a host of keypads (from £250) with custom labelling can give remote control over key functions without the need for a dedicated display or networked plotter.

Raymarine takes a slightly different approach with its new YachtSense. It is aiming for more ambitious refits, with a modular approach that was built out of the Empirbus system.

A master unit neatly plugs into slivers of whatever additional switching units you need – low power, high power, reversible motor and signal. In this neat package, you can control and oversee every circuit on board, but it comes at a price: €995 (£867) for the master controller and €395 (£345) for each additional sliver.

Since Garmin took EmpirBus in-house, the system has been reoriented towards the manufacturer’s own plotters, which naturally enough offer the greatest customisation and control options. But the system will still integrate with any plotter system from Raymarine, B&G or Furuno.

Empirbus is built around a master control unit which activates different modules around the boat. Prices are not published, but they are comparable with Raymarine.

For smaller boats looking to retrofit some form of digital switching, Garmin has developed the Empirbus hardware into an all-in-one unit called the Boat Switch. It plugs straight into the NMEA2000 system for chartplotter control, and you can run up to 20 circuits off it, on either 10- or 5-amp channels. At £950, this is an efficient approach if you already have a Garmin instrument system.

Or you could use the SailSense PowerRail (ca. €2,520/ £2,196), which can control 24 circuits up to 16A, 8 sensors and 3 battery banks. Both of these systems are centralised and require the full run of cabling from the unit to the load, as in a traditional set-up.

The new Oyster 495’s helm pod gives you a smorgasbord of control without leaving the wheel. Photo: Morten Strauch

Alternative brands

There are other brands as well, but they are often focused on market niches. Italy’s Blink was in the vanguard of digital switching, and provides keypads to the America’s Cup campaigns of both Luna Rossa Prada Pirelli and Emirates Team New Zealand, as well as to rally drivers. Its simple Keybox product has been hugely successful in the US, where it is retrofitted as a replacement for defunct DS (disconnect standby) switches.

Yacht Devices has a handy 4-channel control circuit, which plugs into a NMEA 2000 network and can be used on any plotter with support for CZone. The YDCC-04 costs £249 and its four-load capacity can be doubled by adding a £119 additional control post.

In the future

As with everything in life, digital connectivity is becoming more deeply embedded. All the manufacturers I spoke to were reluctant to divulge future plans, but they all looked to the automotive and domestic markets as pathfinders for digital switching and the internet of things aboard.

At the moment, it is all about functionality – allowing us to do things remotely and easily using a single interface. ‘We believe the digital ecosystem will grow to include “off the vessel”, and that users will have access to their onboard systems from anywhere through a mobile experience,’ says Harnett. ‘A single common user interface across multiple platforms like phones, tablets, on board multifunction and navigation displays is essential for a best-in-class ecosystem.’

Raymarine, like other brands, builds digital switching functionality into all of its multi-function display (MFD) chart plotters

This way, interested guests are able to look at charts, tracks and instrument data from the boat via their phones. ‘A connected phone or tablet becomes an additional display presenting data from the plotter,’ says Peter Ingram of Raymarine. ‘Guest crew can look at the charts for position and help with depth monitoring. It offers a more inclusive experience if the captain invites them to the network.’

Integration with companion apps to the big three instrument makers (Raymarine, Navico and Garmin) will make it easier to export some of this information for sharing with those not on board.

As boats become more automated, with electric winches, in-mast furling and magic trim (the new Oyster 495, for instance, trims the main using a hydraulic ram in the boom), it will become more logical to control these systems via a single unified touchscreen display. It will also be more common to have fuel, water and waste tanks digitally monitored, and for valves, switches and pumps in everything from electric heads to watermakers, solar panels to generators reporting to and controlled from the display.

Centralised control means you only need to learn how to use one operating system, rather than lots of separate ones

Integrated coding

Key to getting all this in place is for different manufacturers to open up the coding behind their own controllers so that it can be integrated. At the moment, there is limited compatibility between different brands. Take CZone and Mastervolt, for instance. Both owned by Brunswick, and both using a CAN bus to talk to their network, yet you need to buy a dedicated black box ‘translator’ in order to get them talking to each other.

Dave Dunn, senior sales director marine at Garmin, says that integration is the buzzword of the moment. ‘There’s more integration going on than ever before – from lighting to powershades,’ he says. ‘Lighting is very popular because you can get more customisation, but also pumps, gensets (generators) and so on. It’ll be like a smart home – you push one button and several things happen.’

Despite all the buzz about modern NMEA 2000 systems, this form of CAN bus is a mid-bandwidth form of communication – ideal for limited sensor data and status reports. Functions such as radar and advanced sonar generate more intensive data, so they run over Ethernet. But even here, manufacturers are beginning to feel constrained.

Ethernet standards have been upgraded over time, so the old category 5 systems, which were capable of transmitting 100Mbps, have been superseded by category 6 with up to 100 times the speed – that is, a blistering 10Gbps.

CZone’s system works well on small as well as large boats

Network upgrade

Now, most of us will never be troubled by this distinction, because our instrument networks amount to one or two MFDs, a radar and a perhaps a basic sonar. This is well within the capabilities of category 5 Ethernet.

But superyachts are another matter, and where the top end of the market leads, the rest of us follow. ‘If these systems are going to get bigger and faster and smarter, we’re going to need a new network backbone,’ says Dunn. ‘It’s at the very high end, but it will start to trickle down. Higher bandwidth will open up the doors to tablets and wireless communications, with wireless wind transducers and wireless sonar. Higher bandwidth will allow these systems to be more reliable.’

NMEA has an answer to this, called OneNet – a high powered Ethernet standard. But NMEA membership is expensive, so smaller manufacturers are tempted to use open source standards instead.

Autonmous sailing vessels are already a reality. Their sensing and control tech will become more commonplace for yachts

Battery and inverter maker Victron has done just that, in the hope that it will encourage others to work with it. And it has signed up as a partner Oceanvolt, one of the key players in electric propulsion and the future of electric boating.

In the end, of course, all this leads in just one direction: automation. The era of the fully autonomous vessel is already upon us, with boats from the tiny 2m Sailbuoy to the giant Mayflower catamaran successfully crossing the Atlantic without human input.

What is not yet possible is for a boat to unmoor itself and motor or sail to meet you elsewhere. But we’re getting to the point where boats, with a skipper aboard, can navigate themselves. ‘Between digital switching and these higher bandwidth systems, you could hypothetically have an autopilot that takes readings from radar and sonar, and makes path predictions,’ says Dunn. ‘With machine learning and AI, it won’t happen in five years, but it could be a 10- to 15-year thing.’

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NMEA 2000 Circuit Control YDCC-04

The NMEA 2000 Circuit Control YDCC-04 from Yacht Devices allows digital switching of up to 4 AC/DC channels via latching relays from your chart plotter, web page or connected buttons.

The NMEA 2000 Circuit Control YDCC-04 is the core of the digital switching system. As well as connected buttons, loads can be managed from modern chart plotters, or from virtual buttons on the web gauges of our Wi-Fi gateway or automatically from sensors. You can use the NMEA 2000 Switch Control YDSC-04 in addition to duplicate physical buttons and indicators remotely.

The image above shows how the float switch of the bilge pump and the bilge pump are connected to the circuit control. The button with integrated LED switches the bilge pump between manual and automatic modes, and indicates the actual state. The bilge pump could also be controlled from your mobile device using the webpages within the NMEA 2000 Wi-Fi Gateway (which is connected to the 2-way NMEA 2000 connector). The pump can also be managed from buttons connected to the Yacht Devices Switch Control (YDSC-04).

Electrical Characteristics

• Four channels; two with normally open contacts (ON-OFF) and two with switching contacts
• Latching (bi-stable) relays consume electricity only during the process of switching and stay in their last state after the device is powered off.
• Maximum constant load current per channel is 10A, peak is 20A (4 seconds duty cycle 10%)
• Capable of switching the direct current (DC) and alternating current (AC) loads up to 400V
• High voltage isolation with a load, 5000V RMS
• Average device consumption is only 30mA

The Yacht Devices NMEA 2000 Circuit Control YDCC-04 can work in parallel with other units and be managed from multiple switch control units with a matched bank number. Multiple independent digital switching systems (with different bank numbers) can co-exist in one NMEA 2000 network.

You can manage the loads connected to the Circuit Control from most modern chart plotters with CZone support. This includes Garmin, Lowrance, Simrad, B&G, Furuno and recent models from Raymarine (Axiom, eS and gS series). EmpirBus digital switching products are not yet supported.

The Circuit Control and Switch Control devices are designed to be compatible with Oceanic Systems, Offshore Systems, Chetco Digital, Marathon and Carling Tech displays and relay modules, and with other NMEA 2000 digital switching devices managed with PGN 127501 “Binary Status Report” and PGN 127502 “Binary Switch Control”

• Compatible with a wide range of equipment.
• No special button requirements. You can choose any momentary push buttons to match your boats interior.
• No special knowledge, software or hardware is required for installation
• Any type of load is supported, (AC or DC, audio)
• No heating, no extra power consumption
• Pure NMEA 2000 product, compliant to the standard
• High voltage isolation with the load.

Yacht Devices YDCC-04N Circuit Control Micro Male, 4 x Bistable Relay

• Description

Ask a Question

The Yacht Devices YDCC-04N Circuit Control is a core component of digital switching systems, providing seamless management of onboard electrical circuits. Equipped with four latching (bi-stable) relays, it allows control via connected buttons with LED indicators or over the NMEA 2000 network using standard messages.

Key Features

• Latching Relays: Four channels: two with normally open contacts (ON-OFF) and two with switching contacts.
• Efficient Power Use: Latching relays consume electricity only during the switching process and maintain their last state after power off.
• High Capacity: Maximum constant load current per channel is 10A, with a peak of 20A (for 4 seconds, duty cycle 10%).
• Versatile Load Support: Capable of switching both direct current (DC) and alternating current (AC) loads up to 400V.
• High Voltage Isolation: Provides 5000 VRMS isolation with the load.
• Low Power Consumption: Average device consumption is only 30 mA.

Integration and Control

The Circuit Control integrates with various control systems, allowing management from modern chart plotters, Web Gauges on Wi-Fi Gateways, or automatically from connected sensors. To set up additional control posts with duplicate physical buttons and indications, use the Switch Control YDSC-04 .

The Circuit Control unit can operate in parallel with other units and can be managed from multiple Switch Control units with a matched bank number. Multiple independent digital switching systems can coexist in a single NMEA 2000 network.

System Examples

• Basic System: Single Circuit Control unit setup.
• Typical System: Multiple control panels integrated.
• Parallel Loads: Synchronized Circuit Control units managing parallel loads.
• Independent Systems: Two independent digital switching systems with different bank numbers.

Compatibility

The Circuit Control (firmware 1.01 or later) is compatible with most modern chart plotters supporting CZone, including Garmin, Lowrance, Simrad, B&G, Furuno, and recent Raymarine models. It is also compatible with Oceanic Systems, Offshore Systems, Chetco Digital, Maretron, and Carling Tech displays and relay modules, and other NMEA 2000 digital switching devices managed with standard NMEA 2000 PGN 127501 "Binary Status Report" and PGN 127502 "Binary Switch Control".

Product Benefits

• Compatible with a wide range of equipment, including modern chart plotters.
• No special requirements for buttons; any momentary push buttons can be used.
• Easy installation with no special knowledge, software, or hardware required.
• Suitable for small vessels due to its size and cost-effectiveness.
• Supports any type of load (AC, DC, audio) without heating or extra power consumption.
• Pure NMEA 2000 product, compliant with the standard and certified by NMEA.
• High-voltage isolation with the load and supports firmware updates.

Package Includes

• Circuit Control YDCC-04N
• User Manual

For additional technical details, please refer to the User Guide and FAQ.

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Yacht Devices Circuit Control - YDCC-04N

Purchase options and add-ons

Brand	Yacht Devices
Model Name	Boat Circuit Control
Connectivity Technology	Wi-Fi
Included Components	Boat Circuit Control
Human Interface Input	Buttons
Are Batteries Included	No
Manufacturer	Yacht Devices

About this item

• four channels: two with normally open contacts (ON-OFF) and two with switching contacts
• latching (bi-stable) relays consume electricity only during the process of switching and stay in their last state after the device is powered off
• maximum constant load current per channel is 10A, peak is 20A (4 seconds, duty cycle 10%)
• capable of switching the direct current (DC) and alternating current (AC) loads up to 400 V
• average device consumption is only 30 mA

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Product Description

The Circuit Control contains four latching (bi-stable) relays, which can be managed from connected control buttons with LED indicators or over NMEA 2000 with standard messages. The Circuit Control is the core component of our digital switching system. In addition to connected buttons, loads can be managed from modern chart plotters, with "virtual buttons" on the Web Gauges of our Wi-Fi Gateway, or automatically from our sensors. To set up additional control posts with duplicate physical buttons and indication, use Switch Control YDSC-04.

Product information

Technical details.

Item Package Dimensions L x W x H	‎4.61 x 3.46 x 1.69 inches
Package Weight	‎0.25 Kilograms
Brand Name	‎Yacht Devices
Warranty Description	‎1 year limited warranty
Model Name	‎Boat Circuit Control
Color	‎Black
Material	‎Plastic
Suggested Users	‎unisex-adult
Manufacturer	‎Yacht Devices
Part Number	‎NYD-018
Included Components	‎Boat Circuit Control

Additional Information

ASIN	B07LFKGP7G
Customer Reviews	5.0 out of 5 stars
Best Sellers Rank	#529,150 in Electronics ( ) #1,116 in
Date First Available	June 21, 2019

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The Marine Electronics Hub

• Network & control / Electrical & Engines / NMEA 2000, 0183 & Signal K

Digital Switching gets easier, cheaper, and more compelling

by Ben Stein · January 14, 2020

Until recently digital switching has only been seen on newly built, high-end boats. Now, Maretron and CZone both have digital switching products that can be retrofitted by a boat owner or pro installer and cost under $500. But, are these products easy to install and will the boat owner benefit from the installation? Read on to find out.

Digital switching is a complex topic and there are quite a few systems from several different manufacturers available today with more coming. This entry won’t be able to cover all the capabilities of the systems covered nor the specifics of installing each one. Over the coming year I plan to cover several of these systems in greater depth and show what’s involved in installing and configuring these systems to integrate them into your boat.

Benefits of digital switching

What’s a digital switch and why should I care? That’s a reasonable question and the answer is a little involved. When compared to traditional mechanical switches, digital switching’s biggest benefits are flexibility, reduced weight, weather sealed highly reliable switches, and automation. But, digital switching can also be a little harder to understand at first and troubleshooting can involve a computer instead of a multi-meter which can be intimidating.

Reduced weight through less wiring

Traditional DC switching and power distribution starts with a centralized electrical panel where very large cables are run from the batteries to the panel. Then, each circuit on the boat has a wiring run from the panel to the point of use. On my own boat that means that loads like the fresh water pump, located a few feet from the house batteries, run all the way from the batteries, to the panel, and then back down to the pump. So, power for a load that is three feet from the batteries travels through about 20 feet of wire. Wire is heavy and with the number of circuits on a modern boat that can add up to many hundreds or even thousands of pounds, much of which digital switching can help reduce.

Easy control from multiple locations

With traditional switching, wires must be run to each location you want a switch. On Have Another Day our salon lights can be turned on in two locations. So, there’s wire running to each switch plus another (traveller) running between the switches. This means that adding another switch can be a difficult and time consuming task that consumes lots of marine wire. With digital switching additional switches, or other controls like a touch screen or MFD, connect to the NMEA 2000 backbone of the boat; potentially dramatically simplifying installation.

Weather sealed

A traditional circuit has quite a few connections and each of these is a potential source of corrosion and trouble. Plus, mechanical switches have moving parts that are subject to failure. Digital switching circuits typically bring in a single source of power and then have a single connection to each load. There aren’t individual connections for circuit breakers, switches, and the load. Most digital switching modules are well sealed against the environment, utilize solid state switching, and offer a degree of reliability traditional mechanical switching simply can’t match.

Automation and configurability

Traditional mechanical switching can’t offer much in the way of automation, but digitally switched circuits open a world of possibilities. For example, with digital switching it’s possible to read the fresh water tank level from the NMEA 2000 network and turn off the fresh water pump if the level drops too low. Or, a circuit can be set to turn itself off after a specified delay. Plus, with more advanced digital switching systems the trip threshold can be set on a per circuit basis. So, if you have a load attached that should draw 8 amps you can set the trip threshold at 10 amps. But, if you replace that load with one that only draws 4 amps now you can easily change the trip threshold to 5 amps without making any other changes. Plus, systems with settable trip thresholds also have individual circuit current monitoring. Monitoring current consumption gives the ability to monitor and alarm if unusually high (short circuit) or low (burnt out bulb, freewheeling pump, etc) current is measured.

Cost comparison

When digital switching was first introduced to the marine market it commanded a substantial price premium over traditional mechanical switching, required certified installers, and was designed for installation as part of a new boat-build. But, as digital switching has matured, manufacturers have started offering less expensive and easier to configure versions of their products. Entry level digital switching products are available for as little as $250 for six circuits. I constructed a sample system with traditional mechanical switching for six circuits and it came to about about $200 but that doesn’t include any dimmers, which is built into most basic digital switching modules, nor does it account for a substantial difference in installation labor and supplies.

Hands on testing

I’ve been testing digital switching products from Maretron and CZone . I have Maretron’s MPower CLMD12 12 circuit digital switching module along with their VMM6 6 button keypad and from CZone I have their Contact 6 Plus 6 circuit module along and their KP2x3 6 button keypad .

Maretron MPower

Maretron’s CLMD12 is a 12 circuit digital switching unit with settable trip thresholds, current monitoring, and dimming available on each of the 12 circuits. Additionally, the CLMD12 has 7 discrete inputs. Discrete inputs allow circuits on the CMD12 to be controlled by a mechanical switch or any other control equipment that can complete a circuit. Two of the twelve circuits handle a maximum of twelve amps, six are rated at ten amps, and four are rated at five amps. But, each of these circuits can be set to trip at lower current levels if a smaller circuit needs to be protected. Final pricing for the CLMD12 hasn’t been set, but Maretron expects it to carry a suggested list price of $495, making the per circuit cost pretty affordable at just over $41.

My CLMD12 switch module and VMM6 control unit came configured to work with each other out of the box without any configuration. But, if you want to take advantage of advanced features, Maretron’s line of switching is managed through their G2Analyzer software connected to the vessel’s NMEA 2000 bus by either a Maretron USB100 or IPG100. This software gives you control of an impressive number of parameters for configuring both digital switches and the keypad or rocker switch controls. G2 Analyzer allows the user to configure what happens in response to a button push on a control device, what lights should be lit on the switches, how many amps a circuit should trip at, dimming, default state at power-on, flashing lights and so many other parameters.

Installation

Physical installation of the CLMD12 is pretty straightforward. A single 10-32v volt positive input connects to the stud at the top left of the switch, a ground is supplied to the ground conductor, and a NMEA 2000 drop cable is connected to the DeviceNet port on the bottom right of the switch. Once these basic connections are made the loads and controls can be configured. With those loads configured the last step is to connect the actual loads to one of the 12 wires coming out of the bundle of wires connected to the Deutsch connector on the bottom left side of the unit (labeled J1). I got everything connected and a couple of circuits controlled within an hour or so, though I lost some time because I connected a 5 amp load to a circuit preset to a 3 amp trip threshold. Once I realized this and adjusted the trip threshold everything worked well and I had the opportunity to verify the trip thresholds work as designed.

Bypass module

In the event of a failed switch module, Maretron offers a bypass module for an estimated $195. The bypass module holds blade fuses for each of the 12 loads and also offers a mechanical on/off switch. Maretron’s intent is that a bypass module can be located next to each switch module or have one bypass handy for several switch modules. The bypass module comes with a short, 6 gauge, jumper to piggy back power off the switch module’s power supply. If the switch module fails, the 12-pin Deutsch connector, connected to J1 on the switch module, can be moved from the switch module to the receptacle on the bypass module.

Maretron’s primary switch module for aftermarket applications is the VMM6, a six actuator (fancy word for switch) module with replaceable keycaps to match any label need. The $130 VMM6 will be available with multiple actuator configurations, the sample above has, from left to right, five momentary single action rockers and one double action rocker. The double action rocker effectively has two switches and can be used, as shown, to brighten or dim a light, but can also be used to control two separate loads. The action taken with each switch press is configured in G2Analyzer and includes toggling a load on or off when pressed, one button dimmer control –which toggles the load when tapped and dims up and down when held–, flash the load off and on, just dim, just brighten, momentary (only on when the switch is held), and several other possibilities.

CZone Contact 6 Plus

CZone’s Contact 6 Plus is a $250 6 circuit digital switching unit compatible with the full line of CZone digital switching and monitoring products. At about $42 per circuit the pricing is right in line with Maretron’s CLMD12 and also comparable to traditional mechanical switching. Each of the 6 circuits in the Contact 6 Plus can handle a maximum of 15 amps of 12 or 24 volt DC. The simpler Contact 6 Plus doesn’t have any of the discrete inputs or software configured trip thresholds of the Maretron switches. CZone has gone with a different circuit protection approach than Maretron or their own COI . The Contact 6 Plus uses physical ATC blade fuses for circuit protection and doesn’t have the ability to monitor current consumption. CZone’s use of physical fuses means you’ll need to keep spares on hand in case you blow one and also means access to the unit needs to be considered in order to replace fuses.

Contact 6 systems can be run as very small stand-alone switching systems with CZone’s Smart Harness. Smart Harnesses are available for two or three modules and are non-expandable NMEA 2000 networks. Out of the box Contact 6 systems come configured to run as a standalone system without other devices on their NMEA 2000 network.

If you’re going to use your CZone system with other NMEA 2000 devices on the network you will need to build a configuration in the CZone Configuration Tool and upload it to the CZone components on the network. The configuration tool is very powerful and makes it easy to configure an advanced system. Once the system is configured you can save the configuration file to an SD card and use an MFD to load the configuration onto the network. This ability is really nice as it means no additional hardware is needed to configure your system if you already have a compatible MFD onboard.

Installation of a Contact 6 Plus is also straightforward. The switch module accepts a single 12 or 24 volt DC positive input and a NMEA 2000 drop. The module draws ground through the NMEA 2000 connection. Loads are connected using a six pin plug-in screw terminal that accepts 8-24 gauge wires. Installation of the Contact 6 Plus took well under an hour but I had a bit more of a learning curve with the Configuration Tool so my time to successfully switching loads was similar to with the Maretron system.

Emergency bypass

CZone doesn’t use a separate bypass module, but instead there’s a secondary bypass position on each fuse holder. When the fuse is in the bypass position all digital switching circuitry is bypassed and a direct, fused connection is made between the power source and the load. There’s no additional expense for bypass functionality, but when compared to Maretron’s approach each circuit will need to be bypassed individually if the whole module fails.

CZone offers their keypad controls in six button ($220) and twelve button versions in both portrait and landscape orientations. When the Contact 6 Plus is operating in standalone mode with a smart harness, the push buttons can be configured to behave either as on/off toggle switches or as one button dimmers through a series of button presses. The labels on the panel are adhesive and the keypad comes with a sheet of 60 common labels. When the system is connected to a NMEA 2000 network and configured with the CZone Configuration Tool a much broader set of controls, like Maretron’s, are available.

Proprietary versus standard NMEA 2000 messaging

When manufacturers began designing their digital switching products the NMEA hadn’t added switching PGNs to the NMEA 2000 standard. As a result, manufacturers had little choice but to use proprietary messaging for their implementations. Since then the NMEA has modified the NMEA 2000 standard to include digital switching messages. Maretron has adopted those messages and operates on standard PGNs while CZone continues to use their proprietary messaging to control their switches. Within a single vendor’s system the use of standard or proprietary PGNs won’t change your experience with the products, but if you have multiple vendors’ equipment on the boat and hope to have it work together your options will be significantly better with NMEA 2000 standards compliant communications used.

Yacht Devices switching

So far we’ve talked about ambitious products with the potential to replace much of a boat’s DC distribution system. But, perhaps you’re looking for a simpler option to just control a few circuits. That’s where Yacht Devices ‘ YDCC-04 circuit controller can come into play. First, a quick note that I own Yacht Devices U.S. , the U.S. distributor of Yacht Devices’ parts. The YDCC is a 4 circuit switching device that takes a slightly different approach from Maretron and CZone.

The $250 YDCC is only an on/off device without dimming capabilities. Like Maretron it uses NMEA 2000 standard PGNs for all its control messages. It uses bi-stable relays to switch the circuits and these relays don’t have the ability to do PWM dimming. Additionally, the YDCC doesn’t take a single positive input and then distribute it, instead the switched leg is supplied for each circuit. The switched load can be AC or DC and nearly any voltage running up to 10 amps. The first two loads have outputs for when the circuit is on and off. This allows current to flow to one contact when the circuit is “off” and another when it’s on. There’s not any circuit protection in the YDCC so you’ll need it upstream of the module.

But, the YDCC also has a full set of contacts on the right side of the device for switching. On Have Another Day I’ve switched several loads in my cockpit using a YDCC and what you see above are the four switches connected to the YDCC to control those circuits and indicate their status.

Yacht Devices also offers the $150 YDSC-04 which doesn’t include any relays but allows you to view and control the status of a YDCC (or any other NMEA 2000 standard digital switch) via switches and indicator lights.

Final thoughts

Digital switching isn’t just for new boats. Digital switching brings lots of benefits to your boat. If you’re taking on a project today that requires new circuits it’s hard for me to see why you wouldn’t use one of the low cost, high featured digital switching options in the market. This isn’t to say there’s not a learning curve with digital switching, because there is, but I believe the benefits I talked about earlier easily outweigh the differences and potential complexities. Anytime I look at new systems or paradigms on a boat I try and answer one question… Will this make boating better, easier or more fun? With digital switching I believe the answer is it can make boating easier and better, giving you options you simply can’t have with traditional mechanical switching.

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Publisher of Panbo.com, passionate marine electronics enthusiast, 100-ton USCG master.

27 Responses

• Comments 27
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Ben, how do the products compare in power draw when our boats are in use vs unused? What choice are installers making when it comes to the bilge pump and bilge pump alarm? (Do installers connect them to these products, or leave them connected separately to the battery). If connected to the battery, do any of these products measure increase in bilge pump usage to increase awareness to the user there is a problem?

I can’t find a spec for Maretron, but CZone says the standby current for the Contact 6 Plus is .3ma. Yacht Devices lists average current for the YDCC at 30ma. But, in all cases for these products to function the NMEA 2000 network needs to be powered up. I’d suspect that on most boats that represents a significantly larger load and concern than the consumption of the individual switching component.

On my own boat I haven’t run my bilge pumps through any of the digital switch products. My installations aren’t physically anywhere near the pumps and I don’t have enough operational data of my own to make that change yet. CZone and Maretron both offer products that can indicate when a circuit is energizied (frequently called a run-indicator) but I’d rather monitor bilge pumps with a stand-alone boat monitoring product that also has alerting capabilities integrated in.

Some of the early systems I worked on (pre 2010) had the bilge systems tied into the digital switching, most of those switched to conventional bilge pump wiring by the boat builder after issues with battery draw and other system failures affecting the bilge system. I think the best solution maybe having the pump with separate power but monitored by both conventional and digital means.

That makes sense.

Im curious how the reliability is. Seems that is always the achilles heel of these systems. I really like the idea of it, but the real world application doesnt seem to jive. Fingers crossed

This has come a long way in 10 years since I last looked at it. Back then it was $400-$500 a circuit with 16 circuits and 2 controls pads.

I have been looking for this, and think it is a great idea. But it didn’t turn out like I thought it would. I had assumed there would be a doodad at the load/light that accepted power and the nmea2000 connection. Then you would control the device over the network. This would allow one run of power through the boat, and one run of the network cabling, with drops to the individual items. It seems counterproductive that each of these items still requires a separate power run to the load/light. I don’t see how a guy will save any complexity or runs of wire with this. It seems like the only reason to use this is for the MFD control of your load, which is fun and cool, but not terribly compelling.

In theory you place the modules near load groups so say one in the forward stateroom that controlled the lights in the stateroom and forward head, and maybe the bow lights and head vent fan. Instead of 5 pairs of wires running back to the main panel you would have a communication cable and a a pair of heavier gauge power cables, and each load would have a shorter run. This can be somewhat problematic finding places for the module that are accessible and make sense. The system has to be well engineered and thought out well in advance to really get good weight and wiring savings.

It’s possible car makers have to some degree done it. The real savings they found weren’t on the load side but the control side. SO say you have breaker panel feeding a switch panel with 8 switches on it then on to the loads. Wit digital switching you could now have a switch panel with only a communication cable and the loads can be fed directly from the circuit protection.

As some one who has spent the last decade and a half working with traditional circuit protection as well as digital switching I do take some exception to the reliability statement (at least in the marine world). It may well be true in the future but not now. We used to see the A series or world breakers last 20-30 years in typical recreational marine service, we typically started seeing module or digital switch failures in the 7-10 year range. You also had issues with support as the products age. Some systems have gone thru complete redesigns in the last 10 years and the old systems require rather expensive fixes thanks to that.

I still think it’s the future but I think potential adopters should keep in mind there are still some drawbacks that aren’t fully flushed out. As an aside I also have done a little work with home automation systems. Very few home automation technicians have the systems in their house in my experience, The issue is when the systems age and are no longer supported it can get very costly versus buying a 5 buck light switch at home depot. Now current wireless systems have reduced that risk which I think is why you see so much more in that space now but remember the basic concepts have been doable for 40 plus years with little market penetration (x10)

It isn’t just weight savings. For some of the extra installation complexity, the owner also gets a boat simpler to operate. Rather than buttons programmed 1-1 to match the function of their circuit breaker counter-parts, the installer can have far fewer buttons. Much like you get in a car and have an on switch built into your ignition, you can have an “on” button for your boat that powers on the majority of breakers (instruments, electronics, vhf, etc.) then add buttons only for those devices out of reach of the user (nav lights)

This is very true and something the automtive and motorcycle space already does with multiple circuits tied together (mostly to the key switch but some others). Many multi plex systems do have these features, but one must be careful to make it intuitive. A certain boatbuilder tied many functions to 3 main ” macro buttons” that were supposed to relate to the boat being at dock at anchor etc. But it had the habit of confusing owners used to turning on everything individually. Used to get lots of service calls that were really more user error or interface misunderstanding then actual issues. Another favorite My water heater won’t turn on! Yep it’s because your tank sensor is bad and it has a default to kill power to the water heater when the tank is empty.

I miss Naviop

something else to mull over https://www.neutrinoblackbox.com/products

The motorcycle industry has developed some intriguing modules. The Moto brain and PDM 60 are another 2 I have come across.

Another option for fun, non-critical digital switching. Wire a $35 Google nest mini direct to your 12v. Add a $13 12v 5amp 2 circuit wifi digital switch : https://www.amazon.com/gp/product/B07PGPRZ51/ref=ppx_yo_dt_b_asin_title_o08_s02?ie=UTF8&psc=1 in parallel at your switch panel ( I wired to courtesy lights). Configure the apps and then you can switch your lights at the panel, or on your phone, or by voice “Hey Google switch courtesy lights on” . Under $50 and a half hour. Obviously not appropriate for critical loads. But nice for lights, Music, etc.

Very interesting technology. If digital switching modules were the exact size of standard boat circuit breakers it would be a no brainer to upgrade existing boats. Like home based z-wave digital switching you would then have a mechanical backup.

Maybe somwonw can help me out here How and where can i purchase the MPower modules ?

Unfortunately to the best of my knowledge these modules aren’t available for purchase yet. I’m going to submit a question to the folks at Maretron and see if there’s an update.

I’ve just checked in with Maretron who confirms they’re finalizing pricing and availability and will update as soon as the products are available.

Thanks Ben I will be patient but have my order ready as soon as the products are available

This is great, and finding someone who has got the pieces working. I’ve tried (unsuccessfully) to hook up a Maretron DCR100 to a Garmin 922. The Garmin’s latest software shows switching ui (cool!), and shows switch status changes when a Maretron 150 is used to flip switches, but the 922 won’t control the Maretron directly.

Mr. Stein, Thank you for sharing all this knowledge. I’ve been trying to connect a Maretron DCR100 to a Garmin 922xs MFD, with “limited” luck. Latest Garmin software on 922 shows the DCR, shows the status of the DCR switches (when I flip them with a Maretron controller), but won’t actually flip a switch.

It would appear to be one of two things: 1) need a CZONE config (black magic? supported by Maretron?), or 2) the Garmin is sending the 127502 message, which Maretron stopped supporting a version ago. Neither of the two companies seem to have a great idea here, other than “monitor and see what’s going on” … the monitoring gear would cost more than the switch gear!

All suggestions welcome!

So how do folks handle higher amp devices with digital switches (pumps, downriggers, radars, etc)? Do folks just leave standard mechanical switches for those devices (which would seem to defeat the point of having a digital switching system on their boat in the first place)? I’ve been researching digital switching systems as a potential for my boat rewiring project but the lack of higher amp support is one question I just don’t seem to see addressed anywhere.

Todd, I’m pretty sure that most digital distribution systems let you parallel output channels to get the maximum amperage needed for a particular circuit. For instance, the newish CZone Control X Plus has 24 DC output channels with just four being 15 amps max, the rest less. But with paralleling it can support a circuit that needs up to 80 amps.

Details in the install manual: https://www.czone.net/en/p/80-911-0230-00/Control-X-PLUS-w-Connects

Ben is exactly right about the potential for higher current being satisfied by using multiple channels. I’d think that would deal with most typical loads, but not things like windlasses, etc. For really high current applications, the digital switches can be used to control relays or solenoids.

Thanks @BenEllison and @BenStein – helpful – I love the idea of reducing wiring through my boat thru the use of strategically placed PDM’s but for the life of me was stumped on the higher amp management.

Hey Ben’s – reviving an older post with a question. I am super interested in the Yacht Devices option to keep things non-proprietary but also want to have remote access (think turning on deck lights while returning in tender). I am not finding much in my searches on how to get remote control of NMEA2000 switching PGN’s? Electrical system is Victron based and electronics are Garmin if that helps. Thanks

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• Cables and adaptors

Switch Control YDSC-04

The Switch Control allows viewing of the state and the management of four channels of an NMEA 2000 switch bank from the connected buttons with LED indicators.

It is designed to work in tandem with   Circuit Control YDCC-04   (contains four latching relays) or   Alarm Button YDAB-01   and is compatible with other NMEA 2000 digital switching devices managed by standard NMEA 2000 PGNs 127501 and 127502. You will find system examples and connection diagrams at the   page of Ciruit Control YDCC-04 .

Picture 1. Yacht Devices Switch Control YDSC-04 

The Device has terminals for connection of four momentary push buttons with an LED indicator. External buttons are not supplied with this device; you can choose any to match your boat's interior.

The   Circuit Control   and Switch Control are designed to be compatible with   Oceanic Systems, Offshore Systems, Chetco Digital,   Maretron   (see p.27 in   the Manual ) and Carling Tech displays and relay modules, and with other NMEA 2000 digital switching devices managed with standard NMEA 2000 PGN 127501 "Binary Status Report" and PGN 127502 "Binary Switch Control".

You can also manage loads connected to the   Circuit Control   from most   modern chart plotters with CZone support .

Product benefits:

• no special requirements for buttons, you can choose any momentary push buttons to match your boat's interior (see   p.19 in the Manual );
• special   "split mode" to control two   Circuit Control or Alarm Button units;
• no special knowledge, software or hardware is required for installation;
• price and size are suitable for small vessels;
• pure NMEA 2000 product, compliant to the Standard and   certified by NMEA ;
• support firmware updates,   free software for PC   is available ( Wi-Fi   or   USB Gateway   is required).

Figure 5. Drawing of Switch Control YDSC-04

• choosing a selection results in a full page refresh

Yacht Devices

sailors for sailors

  February 18, 2019    Circuit Control and Switch Control update 1.03

The new firmware allows use of multiple Circuit Controls with an MFD, has better compatibility with CZone equipment, a web script can now generate pages for Raymarine Axiom, and one Switch Control can manage two Circuit Control units

First of all, we are glad to inform that you can use one or two Circuit Control units with your MFD (CZone support is required). The second Circuit Control unit must be manually configured for a "secondary group", this can be done with the connected buttons or with the "YD:GROUP SECONDARY" command (see sections VII and X of the User Manual ). To download the configuration file for your MFD, please visit this page .

If you need to use more than two YDCC units with MFD, you can. Please contact us and we will help you with the configuration of your MFD and YDCC units. We also recommend ordering the NMEA 2000 Wi-Fi Gateway along with our digital switching units, to enable easier updating of the firmware. The Gateway will also give you the opportunity to manage loads from any modern web browser , on a smartphone, tablet or laptop.

To use Circuit Control with Raymarine chart plotters with LightHouse 3.8 (Axiom, Axiom Pro, eS and gS series) you need dealer software to create custom pages for Dashboard section. However, now you can also generate a page right on our web site !

You only need to choose the "Raymarine Axiom", enter labels for your buttons, and enter the serial number of your Circuit Control unit. Do not unpack the downloaded file, copy it to MicroSD and click "Import custom pages" in the "Settings" window of the "Dashboard" section. After that, you will need to reboot your MFD.

To replace our logos with your own, open the configuration file and replace files with names starting with "YD_" in the "Assets" folder with your own graphics. If you need to adjust images size or position, you can open files (for the "Dashboard" section and for the combined "Chart\Dashboard" section ) and edit them in the text editor (see Picture 2):

Will be thankful to all users for screenshots from different chart plotters and photos of installations.

The new firmware 1.03 for Circuit Control and Switch Control and updated User Manual are available at Downloads page .

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