High Integrity Relay Card - Honeywell 5701 Operating Instructions Manual

MAN0443.P65 Issue 13 Aug 04
05701-M-5001 A02279
CHAPTER 2 - SYSTEM DESCRIPTION
5.6 High Integrity Relay Card (Part Number 05701-A-0330)
5.6.1 General
Provides connections between the sensor and the control card in the
same way as the Field Interface Card. This card is used to provide
master alarm functions or a mixture of master and individual alarms. The
card is fitted with eight relays, seven of which are fully configurable while
the eighth is used for fault alarm. The relay states are monitored by the
control card to ensure correct operation of the relays. In the case of a
malfunction, the fault relay of the high integrity relay card de-energises.
The fault relay shall always be monitored in order to ensure correct
operation of the system.
Additional capabilities are available with this card including delayed
switch on or switch off of the alarm relays.
Note: The High Integrity Relay Card can only be used with MKII
Control Cards.
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5701 Control System