2-19
2.7.13 HiD 2871/2872 Solenoid/Alarm Driver, Loop or Bus Powered
Hazardous Area Signal (Output)
Output characteristic see diagram below
Response time (@ 300 Ω load)
Turn-on time 1 msec
Turn-off time 8 msec
Max. operating frequency 50 Hz
Safe Area Signal (Input)
Input current 20 mA (40 mA max) with open output
70 mA
with 300 Ω load
75 mA with shorted output
Power dissipation 1.2 W
@ 24 V, 300 Ω load (per channel)
Loop powered
Input voltage 21-30 Vdc
powered by the loop, reverse polarity protected
Inrush current 1 A, 0.5 msec
Bus powered
Control signal Voltage free contact
or open collector
Output ON with contact close or transistor ON
Output OFF with contact open or transistor OFF
Selector switches
Loop powered
Bus power with control
Loop power with control
Factory set as
Bus power with control
LED Indicators
Bus or Loop Power ON
Output status
Green (per channel)
Yellow (per channel)
Output characteristic:
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