FEM3500/FEM3500D/FEM3500M/FEM3500DM
Electromagnetic Lock
Electro-Magnetic Lock Description:
The FEM3500 is a single magnetic lock and FEM3500D is a double magnetic lock with dual 12 or 24 volt settings. There are no Lock or Door status sensors on these units. For wiring instruction refer to figure 2.
The FEM3500M is a single magnetic lock and the FEM3500DM is a double magnetic lock with 12 or 24 volt settings. Each magnetic lock has a built-in Hall crystal for remote monitoring of Lock status (open or closed) thru relay contacts rated at 24 VDC, 1.0 A max on visible high luminosity backlight indicator position on the aluminum housing and a Door Status Sensors (DSS) for remote monitoring of Door status thru reed switch contact. For wiring instruction refer to Figure 1.
Backlight Indicator OFF |
Relay De-energized, |
No Power on Magnetic Lock |
Backlight Indicator RED |
Relay De-energized, |
Power on Magnetic Lock and Door is Open. |
Backlight Indicator GREEN |
Relay Energized, |
Power on Magnetic Lock and Door Locked. |
Power setting and Input requirement:
Power Input |
FEM3500/ FEM3500M |
FEM3500D/ FEM3500DM |
12 VDC |
0.50 A |
2 x 0.50 A |
24 VDC |
0.25 A |
2 x 0.25 A |
The (+) lead of the power source is connected to Pins 1 (VDC +) of the terminal block and the (-) lead is connected to Pin 2 (-). 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. The electromagnetic lock requires a filtered and regulated DC Power Source for optimal performance.
Remove the wiring cavity cover plate and check the position of the two shunts located on the PCB. A single shunt across pins 2 and 3 will set the operating voltage to 24 volts. A shunt between pins 1 to 2 and a shunt between pins 3 to 4 sets the operating voltage to 12 volts.
These voltage shunts must be set correctly before 12 VDC or 24 VDC power is supplied to the Electromagnetic Lock to prevent damage to the unit.
Wiring connections:
Installation Tips
Do not tighten the armature plate tight against the door.
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.
Do not trim the rubber washer mounted on the head of the armature center bolt
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.
Loose wire on terminal strip. |
Check power supply and wiring to magnetic lock.
Check for voltage at terminal block of 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.
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. Voltage spike protection is on the PCB. |
Light panel Status is incorrect |
Misalignment of armature plate.
Hall effect switch has moved inside the magnetic block. |
Check alignment of armature plate.
Reposition Hall effect switch or contact manufacturer for instruction. |
Maintenance
Contacting surface of the Electromagnet and Armature plate must be kept free of contaminating materials. Surfaces should be cleaned periodically with a non-abrasive cleaner. Do not spray the Electromagnet or Armature plate surface with any lacquer chemical, this will cause problems with the release of the magnetic lock and Armature plate resulting in serious safety problems. |
