Introduction
Monitoring
The patented MEM 2400LED Mechanical Electro Magnet locking device is designed for securing all types of
inward opening side hung hinged doors. The MEM lock has a holding force of up to 1000KG and is equipped
with a LED light feature for Secure (green) / Insecure (red) local monitoring indication on the device. The
MEM2400LED has been Fire Tested for up to 4 hours to both AS & BS Standards. The MEM2400LED locking
device is capable of releasing under door back pressure (pre-load) of up to 70KG. The unit comes with an L&Z
Bracket as standard.
The MEM2400LED lock is provided with a number of unique monitoring features for either local or remote
indication:
i. Door Status Signal (DSS) 1 set of normally open contacts (N/O -- blue).
ii. Lock Status Signal (LSS) 1 set of normally open contacts (N/O -- yellow).
iii. Early Warning (EW) x 2. 2 sets of single throw double pole switches.
EW1: (N/O -- purple); (COM -- orange); (N/C -- pink).
EW2: (N/O -- gray); (COM -- brown); (N/C -- white ).
MEM2400LED Mechanical Electro Magnetic Lock
for Inward Opening Doors
Functions
The MEM2400LED Mechanical Electro Magnetic Lock operates on either 12 or 24 VDC. It is set ex-factory on
24VDC and can be changed over to 12V DC by voltage jumper selection. When power is applied to the lock and
the door is in the closed position the Armature Plate is magnetically attracted to the MEM device and both the
DSS & LSS switches change status to NC.
When pressure is applied to the door in an attempt to open it unauthorised, the MEM Lock provides the patented
local or remote “Early Warning” (EW) security alarm indication.
The operating switch or controlling contacts must be installed directly from the power source across the MEM
Lock. The DC output of the power supply must NOT be connected to earth but floating to prevent shock and
possible damage to the unit.
Wiring and Power Input
Power Supply
Ensure that wiring is connected correctly before supplying power to the MEM Lock to prevent
damage to the unit.
NOTE:
1
NO - LSS (YELLOW)
NC (PINK)
NO - DSS (BLUE)
NO (GRAY)
NO (PURPLE)
COM (BROWN)
COM (ORANGE)
NO - LSS (YELLOW)
NC (WHITE)
EW2
50 VDC,
0.3 A max.
NO - DSS (BLUE)
EW1, 50 VDC,
0.3
A max.)
+
12 VDC, 0.35 A
(RED)
+24 VDC
, 0.
175 A
-
GROUND (BLACK)
30 VDC max, 0.3 A max, 10 W max
30 VDC max, 0.3 A max, 10 W max
The Armature plate (B) is screw fixed onto and through the Z-Bracket (C), with the countersunk hex screw
(A). The Armature plate must remain flexible to allow surface alignment with the MEM magnet face. The
MEM Lock will lose holding force without this floating alignment.
1. Screw fix the Z- Bracket (C) directly to the face of the door with the self-tapping screws provided.
2. Install Armature plate (B) with countersunk Allen screw (A) into and through the Z-Bracket (C).
Ensure that the 2 flat washers and 1 rubber washer are in place and tighten the screw into the tapped hole
of the Z-Bracket(C).
Note:The Armature plate, when tightened, must remain flexible and be allowed to float as mentioned above.
3. Install the End Cap(D) onto the Countersunk hex screw (A).
Armature Plate Installation Instructions
Installation diagram
2
Key screw
Spring
Pivoting Pin
Countersink
hex screw (A)
Applied drop-wise of provided
threadlockers glue to the thread
of the security sleeve nut to
prevent loosening
rubber
Flat washer
Security top
sleeve nut
NOTE: Make sure to have the rubber washer mount for absorbing
shock and obtaining the required strenght.
Flat washer
Free-Angle
Z - Bracket(C)
Armature plate (B)
(D)
dome-nut
(C)
Magnet
Door
Door Frame
End Cap(D)
(B)
12 VOLT JUMPER POSITION
24 VOLT JUMPER POSITION
SPARE
JUMPER
(C)
(B)
(A)
(D)
Maintenance
Contacting surfaces of the Mechanical Electro Magnetic Lock and Armature Plate must be kept free of
contaminating materials. Surfaces should be cleaned periodically with a non-abrasive cleaner. Do not
spray the MEM Lock or Armature Plate surface with any lacquer chemicals. This will cause serious
problems with the release of the Armature plate from the Mechanical Electro Magnetic Lock leading to
possible serious safety problems.
Important Safety Precaution
Using the template provided, secure the MEM2400LED MEM Lock firmly on the door frame with the
provided screws and have it checked periodically for any possible screw loosening.
MEM2400 LED Output and Indication Status Table
Condition
Serial
number
1
2
3
4
5
Power OFF
Door Closed
Power OFF
Door Open
Power On
Door Open
Power On
Door Closed
Power On
Door Closed &
Tampered
DSS EW1 EW2 LSS
Indication on Lock
(LED)
Power Off No
LED Indication
Power Off No
LED Indication
Red LED ON
Green LED ON
Green LED ON
Installation dimension
Light feature
3
MEM 2400 model LED light
Bearing sleeve nut
5.5
30.5
218.0
30.0
30.5
Armature plate
174.0
50.0
5.0
V1.0 2013
Accessories and Applications
AdjustableL&ZBracketispartoftheMEM2400LEDKit.
4
174
174
41
50.5
45
Trouble Shooting
Incorrect voltage.
Check voltage jumper setting.
Check power and loose wiring.
No DC voltage to lock.
Door will not lock
Too much back
pressure when
power is off
PROBLEM POSSIBLE CAUSE SOLUTION
Incorrect wiring connection.
Security top sleeve nut higher than
magnet surface.
Back pressure exerted on the MEM lock
not allowing the magnetic lock to retract
back to its original position.
Avoid applying continuous pressure on the door when
closed. Realign the door.
Screw fix the security top sleeve nut level with surface
with the provided key screw and apply thread-locker-glue.
Check wiring, refer to wiring instruction.
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