NAPCO Gemini C-Series Control Panel Installation Instructions--Volume 2
Installation Instructions, Volume 2 Page 11
OVER-CURRENT PROTECTION
OVER-CURRENT PROTECTION
GEMC-XXXMB AND GEMC-NACXX
GEMC-XXXMB NAC Over-Current Protection
When the NAC is active (turned on), it will detect a current
above 6A and turn off the output within 100mS. The output
will remain off until either:
a. The load is removed from the circuit and a short is no
longer detected;
-or-
b. The Fire keypad (GEMC-FK1) is unlocked and RESET
pressed;
-or-
c. The fire alarm has been reset and another alarm is de-
tected
After an over-current has been detected and the Fire key-
pad (GEMC-FK1) is unlocked, RESET pressed (or a subse-
quent alarm turns on the output) and the circuit detects a
current above 6A, the output will be turned off within
100mS.
Note: The system will display a NAC trouble within 200
seconds of detecting an over-current condition indicating a
"RlyTbl/ E35 NN" followed by the programmed description
of the associated NAC.
GEMC-NACXX NAC Over-Current protection when con-
nected to a Gemini C-Series Control Panel
When the NAC is active (turned on), it will detect a current
above 6A and turn off the output within 100mS. The output
will remain off until either:
a. The load is removed from the circuit and a short is no
longer detected;
b. The fire keypad (GEMC-FK1) is unlocked and RESET
pressed;
c. The fire alarm has been reset and another alarm is de-
tected.
If, after an over-current has been detected, the fire keypad
(GEMC-FK1) is unlocked and RESET is pressed (or a sub-
sequent alarm turns on the output), if the circuit detects a
current above 6A the output will be turned off within 100mS.
Note: The system will display a NAC trouble within 200
seconds of detecting an over-current condition indicating a
"RlyTbl/ E35 NN" followed by the programmed description
of the associated NAC. In addition, the associated NAC
LED (1-4) on the GEMC-NACXX board will flash to indicate
the output is in trouble.
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