95-8470
VII-9
RELEASE MODULE
WIRING
Refer to Figure VII-10 for identification of wiring
terminals.
To ensure adequate operating voltage for the output
device, the maximum wiring length from the power
source to the output device must not exceed the values
shown in Table VII-2 for automatic release applications
or Table VII-3 for deluge and pre-action applications.
(For solenoids, this wire length includes both the wiring
from the power supply to the agent release module and
the wiring from the module to the solenoid. For squibs,
use only the wire length from the power supply to the
module, since the resistance of the wire from the
module to the squib is included when determining the
value of the compensating resistor.)
JUMPERS
When the auxiliary power input is used, jumpers W1 and
W2 must be cut. See Figure VII-11 for the locations of
jumpers and switches on the circuit board.
SWITCH SETTING
Each release module in the LIOU must be assigned a
unique address (1 to 8). This is accomplished using
switches S3-2, S4-1 and S4-2 on the release module
circuit board. Refer to Table VII-4 to determine the
correct switch positions for the desired address.
Switches S1 and S3-1 must be set for solenoid or
explosive initiator (squib). Refer to Table VII-5 for switch
positions.
RELEASE SOLENOIDS
CKT #2
CKT #3
10K EOL
10K EOL
10K EOL
1
2
3
4
5
6
7
8
9
10
11
12
+
–
+
–
+
–
–
+
–
+
–
+
RELEASE CIRCUITS
SIGNAL CIRCUITS
AUXILIARY POWER
3
4
5
6
3
4
5
6
+
–
+
–
+
–
+
–
ONE SOLENOID
SOLENOID ONE
SOLENOID TWO
7
8
9
10
11
12
–
+
–
+
–
+
CKT #1
SIGNAL CIRCUITS
TB1
TB1
TB1
TB1
3
4
5
6
+
–
+
–
SEE NOTE 1.
INITIATOR RELEASE
NOTES:
1. USED TO COMPENSATE FOR 10 OHMS MAXIMUM
CIRCUIT RESISTANCE.
1.
RESISTOR MUST BE RATED AT 1 WATT MINIMUM.
2. MAXIMUM NUMBER OF INITIATORS PER CIRCUIT IS 12.
2.
EACH CIRCUIT MUST NOT EXCEED 10 OHMS
INCLUDING CABLE RESISTANCE.
3. USE A 1200 OHM RESISTOR AS A LOAD FOR TEST PURPOSES.
4. POLARITY SHOWN IS FOR ACTIVATED CONDITION.
POLARITY IS REVERSED DURING MONITORING CONDITION.
SEE NOTE 2.
B1863
SEE NOTE 3.
SEE NOTE 3.
Figure VII-10—Wiring Terminals for Release Module
