MAN1565-4
31
6.16
Agent Release Module
The Agent Release Module controls and monitors all the requirements for agent release and carries the slide in label
for identification of the agent and application area.
K1 Termination Link
In
Out
Address
Switch
Set to 1
CN6: Communications & +27V IN from CN2 off the
Previous Front Panel Module or CN9 on the Main Card
CN7: Communications & 27V OUT to Next Front Panel
Card. If Unsed the Termination Link Must be Inserted.
Top Module & PCB
Securing Clips
Bottom Module & PCB
Securing Clips
SW2
CN2
CN7
CN6
TP
9
Key Switch
RS485
&
+/- 27v
In
RS485
&
+/- 27v
Out
1
2
3
4
ON
CN8
Manual Release
Figure 23: Exploded View of Module and Front Panel Layout
The PCB is fitted with two 2 x RJ45 connectors CN6 & 7 for power (27VDC) and communications (RS485) for
communications between the Agent Release Module and the FACP Main Control Board.
Controlled Access
It is a requirement that control be secured from unauthorised use. A keyswitch has therefore
been included in the control process.
The FCP goes into service mode when the keyswitch is switched to SERVICE INHIBIT. This results in the selected agent
activation circuit being electrically isolated and a Common Isolate condition being indicated at the FACP. This
condition can also be confirmed through the Status Menu. To remove the key it is necessary for the switch to be in the
OFF
position.
Pressing Select toggles the selection of either the Main or Reserve release agent. Selection is indicated by
the Main and Reserve Agent LED’s
If activated the Manual Release will commence the discharge sequence of the selected agent and an
alarm condition is initiated. Progress of the release can be monitored through the Status Menu. To prevent accidental
operation this switch has a hinged clear plastic cover that has to be raised to access the switch.
Quiescent Current: 28.5mA
Note:
If the keyswitch is not used CN2 will carry a link so as to enable the panel.