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2903 Power Supply
Installation Instructions
I-EA00003
WIRING DIAGRAMS (cont)
REV 2
Page 4 of 4
Figure 3
Wire scheme for simultaneous control of multiple doors
Figure 3 below shows use of more than one locking device simultaneously locked and unlocked by one control switch. Figure 4 illustrates multiple locking
devices controlled independently by a card reader system.
Applications illustrated in Figures 3 and 4 can be combined to provide both independent and simultaneous control of doors as follows: In Figure 4, move the
two-wire circuit of the three fail safe locking devices from the terminals marked “24DC” (constant 24 volt output) to the terminals marked “NO” (fail safe output).
Connect terminals marked “OPR” (control switch input) to either the fire alarm, an emergency release switch or a group unlock switch. The control switch is
normally closed to lock all doors and allow them to be independently unlocked by card readers. When the control switch is opened, all doors unlock together.
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Figure 4
Wire scheme for independent control of multiple doors
2903
2903
