Switch Monitor

SHIELD Switch Monitor Module is designed to monitor the state of one or more single pole, voltage free contacts connected and to report the status to SHIELD infiNET panel.

  • Three input states - ’normal’, ‘trouble’, and ’alarm’
  • Loop-powered with visible status LED


Operating voltage 17–28V DC (polarity sensitive)
Maximum current consumption at
24V DC		 switch-on surge, max 150ms 3.5mA
quiescent, 20kΩ EOL fitted 1.25mA
LED off, switch input closed 1.5mA
LED on, switch input closed 3.5mA
LED on, switch input s/c 3.6mA
Maximum continuous current 1A
Maximum switching current 3A
On resistance 0.2Ω
Switch input monitoring voltage
 9–11V DC
Maximum cable resistance 50Ω
Operating temperature –20°C to +70°C
Humidity
 0–95%
IP rating 54
Dimensions (L x B x H) 150 mm x 90 mm x 48 mm


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