RTK Series 725 Annunciator
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5.4 Critical Group Relay - GPA
When an alarm occurs the relay will change state and remain in the alarm condition until all alarms in
the group have returned to normal and the logic has been reset. Each channel can be set to operate
the critical group relay as required.
5.5 Critical Group Relay - GPB
When an alarm occurs the relay will change state and remain in the alarm condition until all alarms in
the group have returned to normal and the logic has been reset. Each channel can be set to operate
the non-critical group relay as required.
5.6 Reflash Critical Group Relay - GPA
When an alarm occurs in the critical group the relay will change state and if reflash is set any
subsequent alarm occurring in the same group will cause the relay to drop out for 0.5 seconds. Each
channel can be set to reflash the critical group relay as required.
5.7 Reflash Non-Critical Group Relay - GPB
When an alarm occurs in the non-critical group the relay will change state and if reflash is set any
subsequent alarm occurring in the same group will cause the relay to drop out for 0.5 seconds. Each
channel can be set to reflash the non-critical group relay as required.
5.8 Common Relay Function Codes
FEATURE DESCRIPTION FUNCTION SETTING
Critical horn relay enable F23 ON
Non-critical horn relay enable F24 ON
Critical group relay enable F21 ON
Non-critical group relay enable F22 ON
Reflash critical group relay enable F8 ON
Reflash non-critical group relay enable F9 ON
5.9 Multi-Function Relay Operating Modes
The multi-function relay RL5 can be configured to act in different ways to suit particular applications
by selecting one of the features detailed below and placing the shorting bar on the associated LK*
jumper.
RELAY FUNCTION LINK
RL5
RTG = Summary group relay (Common relay which acts as a
summary relay of the GPA & GPB relays)
LK7
RB = Ringback horn relay LK8
FU = First up relay LK6
WD = Power On – Watchdog relay LK9
When the shorting bar is set to LK7 the MUL relay will act as a summary group relay, therefore any
alarm in the system set to operate either the group A or group B common alarm relay will also
operate the summary group relay
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