Installation & Commissioning of Control & Monitoring Add On’s
Page: 19
Solenoid & Metron
This input relies on N/O or N/C relay contacts used in conjunction with 22K
Ω
EOL and 4K7
Ω
series resistors. The type of agent release mechanism and contacts used has to be set in the
Programming Menu for the input to function as per the manufacturers specifications and be in
accordance with the relevant Standard.
Note: The PSW, LPSW & the Interlock Mechanisms are all
mounted onto the top of the cylinder containing the Agent
Termination
Board
+ -
4K7
22K
EOL
Agent
Distribution
4K7
22K EOL
LPSW
LOCK
4K7
22K EOL
PSW
+ - + -
MAIN / RESERVE
RELEASE
To TB7
MAIN or
RESERVE
Release
Agent
Figure 28: Solenoid, Metron PSW, LPSW and “LOCK” Wiring
LPSW & Lock
These inputs are also monitored and should be wired as shown above
1
2
To Monitoring
Interface / Device
0V
RL2A
TB3
= MOV
35V
*
*
*
To Sys
Inop Mon
+
-
System Inoperative
1
2
0V
RL1A
TB4
+27V Current
Limited to1A
Figure 29: Gas Fired Wiring
Figure 30: System Inoperative Wiring
As can be seen from above the;
Gas Fired
Output can be wired to any interfacing or 1A monitoring circuit that requires a closed
relay contact to indicate a change of state. This could be a relay or a solid state device.
System Inoperative
Outputs 27V @ 1A to supply interfacing, signage and aural alarms to
indicate the system has been taken out of service or has developed a fault.
Stage 1, Stage 2
- ( + )
+ ( - )
*
0V
TB5 = Stage 1
TB6 = Stage 2
= MOV
35V
*
*
+ve
-ve
10K
EOL
1 or 2 Way
Signage
To audible / visual
device or interface
*
Stage 1 or
Stage 2
RL3A
RL5A
RL4B
RL4A
RL6A
Agent Termination Board Relays
RL6B
1
2
3
4
The above circuitry applies to both
TB5 ( Stage 1 ) and TB6 ( Stage 2 )
TB5 / 6
MAIN
RESV
+ -
10K EOL
Solenoid
+ -
TB7
Figure 31: Stage 1 and 2 Wiring
Figure 32: Agent Release
Solenoid Wiring
Current Generation Signage
Stage 1 displays the warning sequence ie discharge of the agent is imminent while Stage 2
communicates the discharge of the agent is or has occurred DO NOT ENTER.
2
nd
Generation Signage
Is able to display both phases of agent release.
