Keri Systems SB-293 - Manual (Page 84)

Technical Reference Manual – PXL-250 and SB-293 Keri Systems, Inc.
Page 84 P/N: 01836-004 Revision 5.5
10.2.7 TB-8 - Auxiliary Request to Exit Input Connection
The Auxiliary Request to Exit (RTE - also known as REX) allows a secondary input
device to unlock the door to allow egress from the building. The SB-293 Satellite
Board may accept input from devices such as switches, motion sensors, or floor mats.
The normal state of this input is an open circuit that will be closed when an input is
generated. No voltage is applied at this input; the circuit is completed to indicate an
RTE event. Refer to the Auxiliary RTE Input section on page 33 for more information
on RTE inputs and input devices.
NOTE: The SB-293 Satellite Board must have been configured for two door operation
for the auxiliary RTE input connections to be valid. If the SB-293 board has been
configured for general purpose inputs and outputs refer to the Additional Inputs/
Outputs Configuration section on page 87.
Refer to Table 30 and Figure 10-12 and make the following connections to attach an
auxiliary RTE input.
Figure 10-12: Auxiliary Request to Exit Input Connections
NOTE: If a ground lead from general-purpose input 4 has already been installed on
TB-8, pin 5, loosen the terminal connector and insert the auxiliary RTE ground lead
beside the general-purpose input ground lead.
Table 30: Auxiliary
Request to Exit Input
Connections
TB-8 Description
Pin 4 RTE Signal
Pin 5 Ground/Common