Keri Systems SB-293 - Manual (Page 52)

Technical Reference Manual – PXL-250 and SB-293 Keri Systems, Inc.
Page 52 P/N: 01836-004 Revision 5.5
9.7 TB-3 – Lock Relay Connection
The Lock Relay is a Form C relay used to control the door lock. Please refer to the
Lock Relay output section starting on page 35 for more information on Lock Relays
and output devices.
For a typical fail-safe door lock relay installation, refer to Table 12 and Figure 9-10
and make the following wiring and transorb connections to attach the door lock relay.
Figure 9-10: Fail-Safe Lock Relay Output Connections
For a typical fail-secure door lock relay installation, refer to Table 12 and Figure 9-11
on page 53 and make the following wiring and transorb connections to attach the door
lock relay.
Table 12: Lock Relay
Output Connections
TB-3 Description
Pin 1 Normally-Open
Pin 2 Common
Pin 3 Normally-Closed