
EN
8 Rittal CMC III CAN-Bus Sensor
4Assembly
4.1 Assembly instructions
The assembly of the CAN bus sensor is made as shown in fig. 2, fig. 3, fig. 4 or fig. 5.
5 Installation and operation
5.1 Operating and display elements
The operating and display elements are shown in fig. 6.
Key for fig. 6
1 Multi-LED for the status display
2 CAN bus connection, 24 V
3 CAN bus connection, 24 V
4 Connection for CMC II sensor RJ 12
5.2 Installation
Connect one of the following CMC II sensors to the appropriate connection (fig. 6, item 4).
– Temperature sensor (DK 7320.500)
– Analogue input 4-20 mA (DK 7320.520)
– Access sensor, max. five sensors in series (DK 7320.530)
– Air flow sensor (DK 7320.550)
– Smoke detector (DK 7320.560)
– Motion detector (DK 7320.570)
– Digital input (DK 7320.580)
– Digital relay output (DK 7320.590)
– Voltage monitoring (DK 7320.600)
– 48 V voltage sensor (DK 7320.620)
– Leakage sensor (DK 7320.630)
– Leakage sensor, 15 m sensory system (DK 7320.631)
– Redundant power supply (DK 7320.426)
– Door Control Unit (DK 7320.790)
– DET AC fire extinguishing system (DK 7338.120)
– DET AC early fire detection (DK 7338.220)
Connect the CAN bus sensor with a CAN bus connection cable to the CMC III PU or to the neigh-
bouring elements on the CAN bus (fig. 6, item 2, 3).
Display of the status change:
– The two green and the two red CAN bus LEDs on the CAN bus connection flash.
– The multi-LED of the Processing Unit flashes continually in the green – orange – red sequence.
– The multi-LED of the CAN bus sensor flashes blue continuously.
Press the "C" key on the CMC III PU (a first audio signal is issued) and keep it pressed for approx.
3 seconds until a second audio signal is issued.
Display of the status change on the CAN bus LEDs:
– Green LEDs light continuously: CAN bus status "OK".
– Red LEDs light continuously: CAN bus status faulty.
Display of the status change on the multi-LED of the Processing Unit:
– Continuous green light: All units attached to the CAN bus have the "OK" status.
– Continuous orange light: At least one unit attached to the CAN bus has the "warning" status.
– Continuous red light: At least one unit attached to the CAN bus has the "alarm" status.
Assembly, Installation and operation