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15
Internal Relay Wiring
MorphoAccess® SIGMA Lite Series
–
Quick User Guide - 2015_2000005700-V4
Inductive load management requires a parallel diode for a better contact lifetime.
19
RELAY_NO
Yellow
21
RELAY_NC
Orange
22
RELAY_COM
Grey
Warning
The internal relay is limited to a maximum current of 1A @ 30V. If the deadbolt / door strike draws
more than 1A, damage to the device may occur. If the deadbolt / door strike load exceeds 1A, an
external relay must be used.
The internal relay is designed for 100.000 cycles. If more cycles are needed, an external relay
driven by GPO must be used.
Power supply
VCC < 30V
Imax < 1A
Deadbolt /
Door strike
Push Button
on other side
of the door
Snubber Diode
St
ep
four:
AC
P
or
SD
AC
Warning
This is recommended only for
small or stand-alone applications
where access control panels are
not available.
In this mode it is strongly
recommended to monitor the
Tamper Detection of the device
Example for Normally
Open connection
