MAN0443.P65 Issue 13 Aug 04
5701 Control System
05701-M-5001 A02279
CHAPTER 4 - INSTALLATION INSTRUCTIONS
4 - 61
14.
OUTPUT CONNECTIONS
14.1
Relay Outputs
Note
: 1. The
FAULT
relay is permanently configured for normally
ENERGISED
operation in the non-fault condition.
2. Unless the High Integrity Relay Card is fitted, the
INHIBIT
relay (where fitted) is permanently configured for normally
DE-ENERGISED
operation in the non-inhibit condition.
3. The Alarm relays may be configured for either normally
energised or normally de-energised operation. Refer to the
configuration printout or use the relays screen of the
Engineering Interface Software to determine the configuration.
CAUTION
When mains ac is connected to the relay contacts:
a.
The ac supply should be fused at 5A maximum.
b.
A safety earth connection should be made to the ground
terminal of the relay card.
There are four relay card types providing different levels of alarm relay
capability (See Chapter 2 Section 5).
The cabling to the relays should where possible be kept away from the
sensor cabling, especially those cables carrying mains supplies. The
following figure shows the relay contact connections as shown on the
terminal block.
Com
NO
NC
Energised
Contact
Position
Com
NO
NC
De-energised
Contact
Position
De-energised and Energised Relays Showing Contact Positions
