Operating And Display Elements - Rittal Unité E/S CMC III Notice D'installation Et D'utilisation Succincte

4 Assembly
4.1 Assembly instructions
The assembly of the I/O unit 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 "C" key to acknowledge messages
2 Multi-LED for the status display
3 Alarm relay output (floating contact, max. 24 V
4 Digital inputs (for floating contacts) (eight)
5 CAN bus connection, 24 V
6 CAN bus connection, 24 V
Note:
The voltage sources at positions 3, 4, 5 and 6 (fig. 3) must satisfy the Limited Power
Source (LPS) requirements in accordance with UL 60950 and observe the limit values
mentioned above.
5.2 Installation

Close the switching devices to the voltage-free relay outputs (fig. 3, item 3).

Observe the pin assignment:
Pin Signal
Pin 1 NC
Pin 2 NO
Pin 3 C

Feed an appropriate signal to the digital outputs (fig. 3, item 4).

Configure at the CMC III PU web site whether a normally closed contact or a normally open contact
is connected at the associated connection (see section 5.3).

Connect the I/O unit with a CAN bus connection cable to the CMC III PU or to the neighbouring el-
ements on the CAN bus (fig. 3, item 9, 10).
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 I/O unit 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 I/O Unit
Assembly, Installation and operation
, 1 A) (four)
EN
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