Keri Systems SB-293 - Manual (Page 83)

Keri Systems, Inc. Technical Reference Manual – PXL-250 and SB-293
Revision 5.5 P/N: 01836-004 Page 83
10.2.6 TB-8 - Request to Exit Input Connection
Request to Exit (RTE - also known as REX) devices typically unlocks 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 Request to
Exit 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 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 29 and Figure 10-11 and make the following connections to attach an
RTE input.
Figure 10-11: Request to Exit Input Connections
NOTE: If a ground lead from the Door Status Switch input has already been installed
on TB-8, pin 2, loosen the terminal connector and insert the RTE ground lead beside
the door status input ground lead.
Table 29: Request to Exit
Input Connections
TB-8 Description
Pin 2 Ground/Common
Pin 3 RTE Signal