Figure 20 - Lock State - Fail Safe Device; Figure 21 - Lock State - Fail Secure Device - Keyscan CA250B Technical Instructions

Relay board
Relay board
KI-00124E-07-11
Relay board
KI-00125E-07-11
Keyscan Inc. – Technical Guide (PC109x - 04.15)
Figure 20 – Lock State - Fail Safe Device
to 'Normally Closed'
positon on relay
to
to common
+
on DC power supply
supply
to 'Normally Closed'
positon on relay
to
to common
+
on DC power supply
supply
+
DC
Lock
Supply
-
Figure 21 – Lock State - Fail Secure Device
'Normally Open'
positon on relay
to common
on DC
power supply
to
+
supply
+
DC
Lock
Supply
-
+
-
+
-
Lock State
of
Fail Safe Device
to
+
-
Lock State
of
Fail Secure Device
Maglock
Door
Strike
Door
Strike
33