Keri Systems SB-293 - Manual (Page 82)

Technical Reference Manual – PXL-250 and SB-293 Keri Systems, Inc.
Page 82 P/N: 01836-004 Revision 5.5
10.2.5 TB-8 - Door Status Switch Input Connection
The Door Status switch indicates the state of the door (open or closed). If a door status
switch is not being used, install a jumper between pins 1 and 2 of TB-8. The normal
state of this input is a closed circuit that will be opened when an input is generated. No
voltage is applied at this input; the circuit is opened and closed corresponding with the
door status. Refer to the Door Status Switch Input section on page 32 for more
information on Door Status Switch inputs and input devices.
NOTE: The SB-293 Satellite Board must have been configured for two door operation
for the door status switch 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 28 and Figure 10-10 and make the following connections to attach a
door status input.
Figure 10-10: Door Status Switch Input Connections
NOTE: If a ground lead from the RTE input has already been installed on TB-8, pin 2,
loosen the terminal connector and insert the door status switch ground lead beside the
RTE input ground lead.
Table 28: Door Status Switch
Input Connections
TB-8 Description
Pin 1 Door Status Switch Input
Pin 2 Ground/Common