Keri Systems SB-293 - Manual (Page 33)

Keri Systems, Inc. Technical Reference Manual – PXL-250 and SB-293
Revision 5.5 P/N: 01836-004 Page 33
NOTE: If a Door Status switch is not being used, a jumper must be installed across
pins 1 and 2 of TB-4 (for the PXL-250 Controller) and pins 1 and 2 of TB-8 (for the
SB-293 Satellite board). This prevents a continuous Door Open signal from being
received by the controller and it ensures proper operation and annunciation of Door
Forced and Door Held Open alarms.
NOTE: If the Door Status input is being used, to ensure proper operation and
annunciation of Door Forced and Door Held Open alarms the door must also have a
Request to Exit input enabled.
8.1.2 Request to Exit Input
The request to exit (RTE) input accepts signals from a normally open input device that
indicates that a request has been made for someone to exit a secured door. Motion
detectors, pressure-sensitive floor mats, or push buttons may make RTE requests.
While there is no one there to activate an RTE request, the input remains open. When
someone desires to exit through a secure door, this person activates the RTE device,
closing the circuit and generating a state change. The controller then responds to this
state change per programmed instructions and generates an output unlocking the door
to allow exit. Refer to Figure 9-7 on page 47 (for the PXL-250) and Figure 10-11 on
page 83 (for the SB-293) for possible RTE wiring diagrams.
8.1.3 Auxiliary Request to Exit Input
Through an option in the Doors program, the general purpose input on the PXL-250
and general purpose input 3 on the SB-293 can be configured to provide an auxiliary
RTE input for an A-Door or a B-Door, respectively. This gives a person in a remote
location the ability to unlock a secure door (for example, an auxiliary RTE input at a
Receptionist’s desk that allows the Receptionist to unlock a secure door).
The auxiliary RTE Input works exactly like the standard RTE Input explained in the
previous section. Refer to Figure 9-6 on page 46 and Figure 10-12 on page 84 (for the
SB-293) for possible auxiliary RTE wiring diagrams.
NOTE: The PXL-250 has only one general purpose input. This input can be
configured for either Auxiliary RTE or for Global Unlock – but not both. Determine
which input application best suits the site requirements before installing input
hardware and wiring.
8.1.4 Global Unlock Input
Through an option in the Doors program, the general purpose input on the PXL-250
can be configured to perform a Global Unlock. A Global Unlock allows an operator to
unlock all doors, immediately (this input is only valid on the master PXL-250
Controller).