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Figure 12 – Double Door (No Access Control Unit)
Fail secure electric locks are normally not permitted for use with the DSB on required exit
applications. Normally open contacts, however, are available for special signaling applications
and for integration with the Request to Exit (REX) function of an access control installation. The
following wiring diagrams (Figures 13 and 14) show typical connections of the dual sense bar,
power supply and a fail safe lock in use on single and double door exits with an access control
unit.
Lock Control
Request to Exit
Relay
Input
Figure 13 – Single Door with Access Control
Lock Control
Request to Exit
Relay
Input
Figure 14 – Double Door with Access Control
PN# 500-22700
Page 9
Rev. F, 03/11
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