IPBridge Installation Guide
Page 30
6.2
: WIRING THE REX INPUT
The REX (Request for Exit) signal expected by the ISONAS IP-Bridge is a
momentary closure. You can generate this
signal with a pushbutton, infrared motion
detector, or other simple device. Typically the
REX is placed adjacent to the door so that
people can press the button and let themselves
out the door without setting off the alarm. When
pressed, this button tells the ISONAS IP-Bridge
that someone wishes to pass through the door,
and the latch releases. In the ISONAS Crystal
software you can configure how the door
responds to the REX button.
The momentary switch is directly connected to
the ISONAS IP-Bridge. First, connect one
conductor from the switch to the IP-Bridge’s
“REX” terminal, as shown in Figure 19. Then,
connect the switch's other conductor to one of
the IP-Bridge’s “GND” terminals.
Figure 19
The “REX” input’s return connection will be attached to the IP-Bridge’s Signal
Ground. See the previous “Signal Ground Connections” section of the manual for
more information regarding this part of the connection.
About REX Input
The REX input is
connected to a “Normally
Open” contact on the
external device.
The REX event is created
with the external device
closes its contact.
