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Discrete I/O Function
Smooth Scroll
One Button Smooth Scroll
Discrete Momentary
4.4 Manual Bypass
The Maretron Mechanical Bypass Module (CBMD12) P/N A3675 can be installed in
conjunction with the CLMD12.
The bypass module provides a manual method (On/Off switch) to control loads by providing
power to each load in case of CLMD12 malfunction and/or NMEA 2000 network failure. The
power outputs provided by the bypass module are over current protected via an individual fuse
for each output. Please ensure that the current rating of the fuse for each load is appropriate to
protect the load and the wiring for that load.
Please note that the bypass module does not support paralleled outputs, since each circuit is
controlled by a separate switch. Additionally, the bypass module does not support dimming of
circuits.
WARNING
The CBMD12 Mechanical Bypass Module is not ignition protected. Ensure
that the area is free of fumes and gasses when the switches are cycled and
when fuses are removed and/or installed.
To change control from the CLMD12 load module to the CBMD12 bypass module, please
perform the following steps:
1) Ensure that the area is free of fumes and gasses.
2) Ensure that all switches on the CBMD12 bypass module are in the OFF position.
3) Connect power to the ¼"-20 power stud on the CBMD12 bypass module.
4) Unplug the J1 connector from the CLMD12 load module.
5) Plug the J1 connector into the CBMD12 bypass module.
6) For the circuits you wish to energize, set the corresponding switches on the CBMD12
bypass module to the ON position.
Please refer to the diagram of how the bypass module is installed below in Figure 12.
Revision 1.6
Description
A momentary touch turns breaker ON only; continuing to hold scrolls
dimming level UP and DOWN (last known state is retained).
A momentary touch changes breaker state; continuing to hold scrolls dimming
level UP and DOWN (last known state is retained).
The breaker stays on as long as the monitored signal remains active. The
breaker turns OFF when the input becomes inactive.
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