Nortech CRC200R - 3.7 Arming and Door Monitoring Options

CRC200R USER GUIDE ISSUE 02
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The ‘free exit’ (REX) and ‘0v common’ pins may be wired to the normally open contacts of a
momentary push button or detection device such as an inductive loop vehicle detector.
3.7 Arming and Door Monitoring Options
Each of the reader inputs can be associated with an arming input. Connecting the ‘0v common’
and ‘MON’ (Door Monitoring) input via a switch or relay contact allows the reader to be armed
externally. This is only available when door monitoring is switched off (see section 5.5.1). The
contact must be open (open circuit between pins) to arm the associated reader and closed (pins
short circuited) to disable the associated reader.
The door-monitoring feature can be used if the CRC200R is online to a Norpass2 Access Control
Management System. Here, these pins are wired via a door contact such that the pins are short-
circuited when the door is closed. If the door is left open longer than a preset time (see section
5.5.1) or if the door is forced open without the detection of a valid card, a corresponding alarm can
be raised at the control PC.