FEM3500FM
Electromagnetic Lock
Introduction:
The FEM3500FM is a mini mortise mount electromagnetic lock that operates on dual 12 or 24 VDC.
The magnetic lock has a built-in remote monitoring lock status switch (Normally open or Normally
closed). The unit must be filtered and regulated with a DC Power source for optimal performance.
Lock monitoring
on 3 output wire
Black wire
Common
Red wire
Normally closed
Green wire
Normally open
Reed switch not operated No Power on Magnetic Lock. Power on Magnetic Lock and Door Open
Reed Switch Operated Power on Magnetic Lock and Door Closed.
Reed switch contact rated 30 VDC, 0.2 A max.
Wiring and Power input requirements:
12 VDC 0.42 A max
24 VDC 0.21 A max
The (+) lead of the Power Source is connected to RED lead of the PCB and the (-) lead is connected to
BLACK lead of the PCB. The operating switch or controlling contacts must be installed between the power
source and the Magnetic Lock to reduce operating time of the magnetic lock to a minimum.
Dip switch settings: Switch positions 1 and 2 to ON and switch position 3 to OFF for 12 VDC operation.
Switch position 3 to ON and switch positions 1 and 2 to OFF for 24 VDC operation.
RED +
BLACK -
POWER INPUT
RED (NC )
BLACK ( C )
GREEN (NO)
ON
OFF
1
2
3
REED SWITCH
ON
OFF
1
2
3
ON
OFF
1
2
3
12 VDC SETTING
24 VDC SETTING
WARNING: The PCB Dip switch pin position must be set correctly before applying power to the lock, wrong
pin setting will cause the PCB to fail. This will not be covered under warranty.
Maintenance
Contacting surface of the Electromagnet and Armature plate must be kept free of dirt and foreign matters.
Surfaces should be cleaned periodically with a non-abrasive cleaner. Do not spray the Electromagnet and
Armature plate surface with any chemicals such as lacquer, etc. This will cause serious problems with the
release of the magnetic lock and its armature plate resulting in serious safety problems.
Installation Tips
The FEM3500FM has unlimited operating life and receives a great number of shocks from door closing and
opening, so it is important to secure the magnetic lock firmly in place.
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The armature plate must be remained movable to allow surface alignment with the magnet face. The
magnetic lock will lose holding force without this floating alignment.
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Trimming this rubber will adversely affect the release of the armature plate from the magnetic lock.
Trouble Shooting
Problem Possible Cause Solution
Door will not lock No DC voltage to lock. Check power supply and wiring to
magnetic lock.
Reduced holding force Bad physical contact between armature
plate and face of magnet.
Ensure mating surfaces are clean and in
proper alignment and the armature plate
floats freely.
Low voltage or wrong voltage setting Check magnetic lock for low voltage or
wrong voltage setting.
Delay in door release Circuit switch is not between magnetic
lock and power source.
Secondary diode installed across
magnetic lock.
Re-wire circuit switch between magnetic
lock and power source.
Remove this diode, The PCB is equipped
with Voltage spike protection.
Reed switch status is
incorrect
Misalignment of armature plate.
Reed switch has displaced inside the
magnetic block.
Check alignment of armature plate.
Reposition Reed switch.
Contact manufacturer for instruction.
V 1.1 2007
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