1.3
95-8574
4
applications, such as solenoid activated valves, an
external power supply can be used. The R1425 monitors
its own internal circuits, and the status of external input
devices. The R1425 also monitors detonators that are
connected to it for opens, shorts to ground, and low
voltage conditions. System status is shown on front
panel indicators. See Figure 4.
w2400 gROUND FaULT mONITOR mODULE
The W2400 Ground Fault Monitor is a dedicated module
in the Flame Detection/Releasing System that protects
the integrity of the system power wiring by monitoring
for ground faults. Detection of a ground fault condition
is indicated by actuation of a solid state output and
illumination of LEDs on the faceplate of the module.
1
RED ALARM RELAY LED, NORMALLY OFF—BLINKS WHEN RELAY ENERGIZED, ON (STEADY) WHEN RELAY DE-ENERGIZED, (ALARM ACCEPT)
2A
SELECT/ALARM ACCEPT BUTTON—IN NORMAL MODE, DE-ENERGIZES ALARM RELAY – IN TEST MODE, SELECTS NEXT RELAY CIRCUIT
FOR TEST
2B
SELECT BUTTON—SELECTS RELAY CIRCUIT IN TEST MODE
3
DIGITAL DISPLAY—NORMALLY OFF—TURNS ON TO INDICATE STATUS CHANGE AND RELAY AFFECTED
4
AMBER SYSTEM FAULT LED, NORMALLY OFF—ON TO INDICATE SYSTEM FAULT
5
GREEN POWER LED, NORMALLY ON WHEN UNIT IS POWERED
6
RED FIRE RELAY LEDS, NORMALLY OFF (RELAY UN-ENERGIZED)—BLINK WHEN RELAY ENERGIZED—ON (STEADY) WHEN RELAY
DE-ENERGIZED
7
AMBER FAULT RELAY LED, NORMALLY OFF (RELAY ENERGIZED) BLINKS WHEN RELAY DE-ENERGIZED—ON (STEADY) WHEN
RE-ENERGIZED (FAULT ACCEPT)
8A
TEST/FAULT ACCEPT BUTTON—IN NORMAL MODE, RE-ENERGIZES FAULT RELAY—IN TEST MODE, ACTIVATES RELAY DRIVE CIRCUITRY
IN TEST MODE
8B
TEST BUTTON—ACTIVATES RELAY DRIVE CIRCUITRY IN TEST MODE
9
AMBER INHIBIT LED, NORMALLY OFF—ON TO INDICATE RELAYS ARE INHIBITED
10
LAMP TEST BUTTON—TESTS ALL LEDS AND DIGITAL DISPLAY
11
KEYLOCK SWITCH—SELECTS NORMAL, RESET, TEST MODES
5
4
3
2A
1
3
2B
6
8B
9
10
11
10
11
5
9
7
6
8A
4
RELAY MODULE
1
3
5
2
4
6
RELAYS
RELAY
RELAY STATUS
ACCEPT
ALARM
FAULT
SELECT
TEST
SYSTEM
STATUS
FAULT
INHIBIT
POWER
LAMP
TEST
NORMAL
RESET
TEST
R6006A, C
RELAY MODULE
1
3
5
7
2
4
6
8
RELAYS
SELECT
TEST
SYSTEM
STATUS
FAULT
INHIBIT
POWER
LAMP
TEST
NORMAL
RESET
TEST
R6006B, D
STATUS
RELAY
B266
Figure 3—R6006 Relay Output Module Front Panel
