Manual

Fire Detector Input Modules (T3419)
20 Industrial Control Services
Specifications
Safetybus Power
0.85 load units
Number of Inputs
16
Field Circuit Type
Standard 20 volt detector
loop, line monitored and
tested
Field Power
Voltage:
Current:
15 to 40 VDC
1.2 amps, maximum
Nominal Operating Voltage
Module provides regulated
23.5 Vdc for input loop
End of Line Terminator
3.0 Kohm resistor, typical
Quiescent Current,
Maximum
3 to 10 mA, typical when
detector in normal state
Detector Alarm
See Load - line
characteristics, page 10 .
Reset
Voltage:
Current:
Time :
<1 volt
<20 m A
Programmable
Test Interval
15 seconds (typical)
Intrinsic Safety
External barrier
Over voltage Protection
27 volts continuous, 500
volts surge transient
Fusing
None (internal current limit
20 mA — no damage with
continual short circuit or
open input)
Is olation
2500 volts minimum (field
wiring to control logic)
Operating Temperature
0° to 60 ° C
(32 ° to 140 ° F)