Relay module CMR 411, 811, 431 - CMR 412, 232
Operating and assembly instructions
Introduction / Use
The relay modules CMR 411, 811, 431 for single-pole fuse protection and CMR 412, 232 for
double-pole fuse protection are part of the PBUS system and are intended for operation on a
battery voltage DC 12V and 24V. Depending on the model, 2 to 8 functions / loads can be
switched with the CMR relay modules.
Each of the relays allows individual switching of loads and external devices by means of
events reported by other PBUS components. These are:
-
Switching of loads with dimmer control signal (max. 4 channels) for LED luminaires via
PWM control (suitable luminaires required)
-
Energy management, control of high-current relays
-
Control of an AC generator
-
Visualisation of alarm messages by means of external buzzer or indicator lights
-
Pump control for tank alarm
-
Thermoswitch: temperature-dependent control
-
Bilge monitoring
Each of the relays has a potential-free contact. Two PWM control outputs (dimmers) and a
control input are assigned to each relay.
The PWM control outputs are available as open-collector outputs (e.g. for Prebit LED
luminaires) and as voltage signals (level 5V).
V31 - APR 21
Relay module CMR x
and for CMR4 as of software version V30
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