Figure 22 - Lock State - Fail Secure Device - Keyscan CA250 Series Technical Manual

Relay board
KI-00125E-07-11
Keyscan Inc. – Technical Guide (PC109x - 07.15)
Figure 22 – Lock State - Fail Secure Device
'Normally Open'
positon on relay
to common
on DC
power supply
to
+
supply
+
DC
Lock
Supply
-
to
+
-
Lock State
of
Fail Secure Device
Door
Strike
37