Technical Reference Manual – SB-293
Printing Date
01838-002 Rev. 3.0
July-1998
Page 19 of 32
Figure 10 – 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.
TB-8 – Auxiliary Request to Exit 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. Please refer to the auxiliary RTE Input section on page 13 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 24.
Refer to Table 6 and Figure 11 and make the following connections to attach an auxiliary RTE input.
TB-8 – Pin . . .
Description
Pin 4
RTE signal – GPI 3
Pin 5
ground/common
Table 6 – Auxiliary Request to Exit Input Connections
Figure 11 – 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.
TB8
1
2
3
4
5
6
Ground/Common
Signal
Ground/Common to TB-8, Pin 2
Signal to TB-8, Pin 3
Press Button to Open Circuit
and make a Request to Exit
Normally Open Input Device
GPI 2
WIRING CONNECTIONS
TB8
1
2
3
4
5
6
Ground/Common
Signal
Ground/Common to TB-8, Pin 5
Signal to TB-8, Pin 4
Press Button to Open Circuit
and make a Request to Exit
Normally Open Input Device
GPI 3
WIRING CONNECTIONS