ST950S Plus+ Installation and Commissioning Manual
Table 30. CIC/CTB Relay Interface
Pin
Legend
Function
1
ST950 RLY A
ST950 Relay A
2
ST950 RLY B
ST950 Relay B
3
RLY GND
No Connection
4
NC
No Connection
5
+24V DC
+24V to power the ST950
6
GND
0V to power the ST950
If the ST950 de-asserts either Relay A or Relay B;
all
CICs in the system will open their Power-bank
Relays and hence remove the +48V DC supply from all nodes in the system.
3.15.12. CIC/CTB Addressing
A single BCD address switch which is situated for easy access at the front of the CIC and visible when
mounted to the CTB, provides a configurable address for the CIC for the purposes of GSPI and SPB
addressing.
The GSPI address selected by the BCD address switch is offset by 16. This is to ensure that there is no
conflict with other GSPI devices such as I/O Cards.
The Address switch position on any CIC needs to be uniquely set as follows:
•
0 = not used
•
1 = CIC 1 (GSPI Addresses 16 & 17)
•
2 = CIC 2 (GSPI Addresses 18 & 19)
•
3 = CIC 3 (GSPI Addresses 20 & 21)
•
4 = CIC 4 (GSPI Addresses 22 & 23)
•
5 = CIC 5 (GSPI Addresses 24 & 24)
•
6 = CIC 6 (GSPI Addresses 26 & 27)
•
7 or above = not used
3.15.13. CIC/CTB Status LEDs
The status LEDs provide an engineer with some information on the correct operation of the CIC.
The CIC has six LEDs (three per CPU) which are used to indicate various conditions as follows;
Table 31. CIC/CTB Status LED Status Functions
LED
Illumination
Function
LP1x – (Green)
System/Software
Run
Slow Flash
Software is operating normally (typically flashing once per
second)
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