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4
ELECTRICAL SPECIFICATIONS
4.1 OPERATING VOLTAGE: 18-32 VDC
4.2 POWER CONSUMPTION:
Max. 25 mA in Stand-by
Max. 50 mA in Alarm
4.3 ELECTRIC INPUT PROTECTION:
The input circuit is protected against voltage-reversed polarity, voltage transients, surges and spikes according to MIL-STD-1275.
FIGURE 5: CONNECTOR INTERFACE
ELECTRICAL SPECIFICATIONS
7-1-07
Page 9
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SHIELD GROUND
FAULT RELAY
CONTACT
(NC)
ALARM RELAY
CONTACT
(NO)
POWER (18-32VDC)
RETURN (–)
4-20mA IN – NOT USED WITH
CHECKFIRE SC-N SYSTEM
4-20mA OUT – NOT USED WITH
CHECKFIRE SC-N SYSTEM
RS 485 (–) – USED ONLY FOR DETECTOR
PROGRAM SET-UP COMMUNICATION
RS 485 (+) – USED ONLY FOR DETECTOR
PROGRAM SET-UP COMMUNICATION
MANUAL BIT ACTIVATION – NOT USED
WITH CHECKFIRE SC-N SYSTEM
GROUND