Operating And Display Elements - Rittal CMC III Notice D'installation Et Notice D'utilisation Succincte

4 Assembly
4.1 Assembly instructions
Note:
For exact temperature measurement using the internal sensor, sufficient air circulation in-
side the enclosure or server rack is required. The position of the temperature sensor must
ensure sufficient air through-flow and vent slots must not be obstructed.
If this is not possible, the external sensor cable must be used in place of the internal tem-
perature sensor.
The assembly of the temperature sensor is made as shown in Fig. 2.
5 Installation and operation
5.1

Operating and display elements

The operating and display elements are shown in Fig. 3.
Key for Fig. 3
1 Connection of an external sensor
2 Multi-LED for the status display
3 CAN bus connection
4 CAN bus connection
5.2 Installation
• If used, insert the external temperature sensor at the front on the temperature sensor connection and
route the measuring sensor to the required measuring point.
Note:
The internal temperature sensor will be disabled if the external temperature sensor is in-
serted.
• Connect the temperature sensor with a CAN bus connection cable to the CMC III PU or to the neigh-
bouring elements in the CAN bus (Fig. 3, Pos. 3, 4).
Display of status change:
– The two green and the two red CAN bus LEDs at 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 temperature 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.
Rittal CMC III Temperature sensor
Assembly, Installation and operation
EN
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