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  1. What firmware changes have taken place on the Maretron DCR100? What firmware changes have taken place on the Maretron DCR100 Relay Module?You can update your device using the N2KAnalyzer software tool.  DCR100 Firmware Versions (2013-07-19)- Removed support for the deprecated 127502 Switch Bank Control... Read More
  2. I see that the DCR100 has a configuration feature called Operating Mode, What does this mean? DCR100 channels have two possible operating modes: “Normal”, in which the DCR100 channel responds to standard NMEA 2000 switching commands, and “Annunciator”, in which the channel may be connected to a power source for a sounder or a light to be acti... Read More
  3. The DCR100 will not allow me to switch on/off a relay channel. Why? The DCR100 has a DC current calibration option. If you have connected a DC load to a channel of the DCR100 and have not performed the "Current Sensor Zero Offset Calibration", this may affect the command of this channel especially if the DCR100 detec... Read More
  4. Is it possible to wire a manual override switch around the DCR100? Yes, you can use a manual switch to override the DCR100. Please see the attached diagrams which shows three different circuit configurations. The first circuit diagram shows how the DCR100 is wired into a circuit without any type of manual override. ... Read More
  5. What is a DCR100? Maretron's DCR100 contains 6 Direct Current (DC) relays, each capable of switching up to 10 Amps at 12VDC or 24VDC. The DCR100 connects directly to an NMEA 2000® network, so you can turn on and off the relays from a Maretron DSM150 or DSM250 dis... Read More
  6. Does the DCR100 provide overcurrent circuit protection? No, the DCR100 does not provide overcurrent circuit protection. The DCR100 contains six Solid State Relays (SSRs), which need to be individually overcurrent protected. The following diagram shows the individual SSRs protected with individual circuit ... Read More
  7. Do the Solid State Relays (SSRs) within the DCR100 turn off if the NMEA 2000 power is removed from the DCR100? Yes, the SSRs within the DCR100 turn off if the NMEA 2000 power is removed from the DCR100. By default, once NMEA 2000 power is reapplied to the DCR100, the individual SSRs will return to the state that they were in at the time power was removed. In ... Read More
  8. Can I use the DSM150 or DSM250 to configure a DCR100? Yes, you can use a DSM150 or  DSM250 to configure a DCR100. Please watch the following video to see how it's done.   ... Read More
  9. In addition to switching On and Off DC loads, can I use the DCR100 to monitor current flow to the loads? Yes, you can use the DCR100 to monitor DC current flow to loads using one of Maretron's display products (e.g., N2KView, DSM150, or DSM250). Each of the six channels within the DCR100 reports how much current is flowing to the load, which is use... Read More
  10. Can I use the DCR100 to switch AC loads? You can not use the DCR100 to directly switch AC loads, but you can use the DCR100 with an external relay to turn On and Off AC loads.- A Solid State Relay (SSR) can be used to switch an AC load as shown in the illustration below.... Read More
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