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DCR100

Direct Current Relay Module

* DCR100 requires configuration if two or more DCR100s, RIM100s, or SIM100s exist on single network (Maretron DSM570, DSM410, USB100, or IPG100 needed to configure)

Link to knowledge base and frequently asked questions

Maretron's DCR100 contains 6 Direct Current (DC) relays, each capable of switching up to 10 amps. The DCR100 connects directly to an NMEA 2000®network and the associated loads can be switched while onboard using Maretron’s dedicated NMEA 2000® displays (DSM570 or DSM410) or Maretron’s N2KView® or N2KView Mobile software.

Loads can also be switched remotely using Maretron’s Real Time Cloud Service.

The DCR100 easily handles resistive DC loads like lights, or inductive DC loads like pumps and motors. The DCR100 can also be used to switch AC circuits using external relays.

An added benefit of the DCR100 is that it reports the current through each of the six channels. This allows you to determine if loads are drawing too little electrical current such as burnt out bulbs, or if the loads are starting to draw too much electrical current.

  • Six relays for on / off control over NMEA 2000® network
  • Each relay capable of carrying up to 10 amps
  • Individual relay electrical current monitoring
  • Automatic relay over-current shutdown (shuts down at appoximately 12 amps)
  • Automatic relay thermal shutdown (over temperature protection)
  • Channels can be assigned as annunciators for using external lights, horns etc. when an alert is triggered.
  • Remote control of navigation lights
  • Remote control of boarding lights
  • Burnt out bulb alerts
  • Connect external lights and horns for alerts.

Note: Maretron monitoring sensors are updated using Maretron’s N2KAnalyzer application on a PC paired with an approved NMEA 2000® gateway.

1.2.3.1 (2024-10-25) – Current Release
  • Support Operating Mode with Inverse Switch Status/Control Mode (Bug #DCR100SW-3)
1.2.2.2 (2014-09-23) - Not Released
  • Support 127502 for controlling (Bug #CVPIT-63, DCR100SW-1)
1.2.2.1 (2017-03-14) - Not Released
  • Fix bug which cause a wrong time reading when timer compare match occur and interrupt was disabled and insert folder name in include header
  • Support Heartbeat PGN (126993)
  • Comply with NMEA2000 version 2.100 certification
  • Change NMEA Certification Level to 2 (As of February 2015 and Version 2.000 of the NMEA 2000 Main Document, Certification Level Field (7) shall be set to 2 meaning “Not Applicable”)
1.1.2.3 (2013-07-16)
  • Remove 127502 transmit feature (bug #2458)
  • Support Switch Status Counter/Timer (bug #2543)
  • Fix conflict between XALM and XPD command (bug #2547)
  • Change NMEA 2000 Database Version to 2.000 (bug #2612)
  • Correct SN erased when upgrade from older firmware issue (bug #2651)
1.1.1.4 (2013-01-28)
  • Correct issue gen load default change NA to 0x00
1.1.1.3 (2012-07-30)
  • Add feature Emulated ALM function for each channel
1.0.3.1 (2011-09-27)
  • Disable periodic ADC calibration because it caused small current reading changed when calibration is executed
  • Improve Time interval control
  • Add Switch Lock feature
  • Change format of PGN 130826
  • In software version number, use dot built instead of beta
  • Support power up state configuration
1.0.2 (2011-05-05)
  • Corrected issue with Instance in Label PGN does not change until reset (bug 1676)
1.0.1 (2011-04-14)
  • Initial Public Release
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