Keri Systems SB-293 - Manual (Page 48)

Technical Reference Manual – PXL-250 and SB-293 Keri Systems, Inc.
Page 48 P/N: 01836-004 Revision 5.5
9.5 TB-4 – Door Status Switch Connection
The Door Status switch indicates the state of the door (open or closed). 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 starting on page 32 for more
information on Door Status Switch inputs and input devices.
Each PXL-250 is shipped with an installation kit including all necessary terminal
blocks and transorbs. One of these terminal blocks has a jumper across pins 1 and 2.
This terminal block is designated for use on TB-4. If a door switch is not used on the
controller, this jumper prevents a continuous door open status alarm from being
received by the controller. If a door switch is used, simply remove this jumper and
install the door switch leads.
Refer to Table 10 and Figure 9-8 on page 49 and make the following connections to
attach a door status input.
NOTE: When using a Door Status input, the door must also have a Request to Exit
input for proper operation/annunciation of Door Forced and Door Held Open alarms.
NOTE: A Door Switch must be installed on any door to which anti-passback is being
applied for proper tracking of the anti-passback feature in the Doors program.
Table 10: Door Status Switch
Input Connections
TB-4 Description
Pin 1 Door Status Switch Signal
Pin 2 Ground/Common