FRIEDHELM LOH RITTAL 7955.2 Série Notice D'installation Et D'utilisation Succincte page 23

7 Installation and operation of the slave PDU managed
7.1 Operating and display elements
The operating and display elements are shown in fig. 12.
Key to fig. 12
1 CAN bus connection (daisy chain) for CMC III processing unit and CMC III sensors, 24 V
2 Second CAN bus connection, 24 V
3 Multi-LED for status display
7.2 Installation
Connect the PDU to a TN-S or IT network. Please note the detailed information in section 8 "Tech-
nical specifications".
Depending on the PDU version, provide the following pre-fuse:
– PDU international: 3 x 16 A (3~/16 A versions), 3 x 32 A (3~/32 A versions), 1 x 16 A (1~/16 A ver-
sions) or 1 x 32 A (1~/32 A versions)
– PDU UK: 1 x 16 A (16 A versions) or 1 x 32 A (32 A versions)
Route the PDU connection cable out of the IT rack and connect it to the mains supply.
Once connected, the green multi-LED for the status display illuminates continually (fig. 12, item 3).
The LEDs of the CAN bus connections (fig. 12, items 1, 2) are flashing green or yellow.
Connect a connection cable from the Rittal accessories to a free slot on the PDU and the equipment.
Note:
When connecting the equipment, please note the maximum load per PDU slot (C13:
10 A, C19: 16 A, UK version: 13 A).
Depending on the PDU version, unused slots can be closed using the C13/C19 covers from the ac-
cessories (fig. 9).
7.3 Connection to a CMC III processing unit
Connect the PDU to the CMC III PU or to the adjacent components in the CAN bus using a CAN bus
connection cable (fig. 12, items 1, 2).
Status change display:
– The two green and the two red CAN bus LEDs on the CAN bus connection of the PDU will start
to flash.
– The multi-LED of the processing unit flashes continually in the sequence green – orange – red.
– The multi-LED of the PDU flashes blue continuously.
Press the "C" key on the CMC III PU (an initial audio signal will sound) and keep it pressed for approx.
3 seconds until a second audio signal is heard.
Status change display on the CAN bus LEDs:
– Continuous green LEDs: CAN bus status "OK".
– Continuous red LEDs: CAN bus status faulty.
Status change display on the multi-LED of the processing unit.
– Continuous green light: All devices connected to the CAN bus have the status "OK".
– Continuous orange light: At least one device connected to the CAN bus has the status "Warning".
– Continuous red light: At least one device connected to the CAN bus has the status "Alarm".
Status change display on the multi-LED of the PDU:
– Continuous blue flashing: Communication via the CAN bus.
– Green flashing: When the measured value changes or, at the latest, every 5 seconds.
Rittal PDU international/PDU UK power distribution unit
Installation and operation of the slave PDU managed
EN
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