Gianni GEM-300 electromagnetic lock provides reliable security for your doors with a holding force of 300 lbs. Suitable for both single and double doors, it operates on 12/24VDC power and features adjustable current draw. Installation is a breeze with included accessories like the LZ bracket for inswing doors. The GEM-300 is a versatile choice for access control systems, ensuring the safety of your premises.
Gianni GEM-300 electromagnetic lock provides reliable security for your doors with a holding force of 300 lbs. Suitable for both single and double doors, it operates on 12/24VDC power and features adjustable current draw. Installation is a breeze with included accessories like the LZ bracket for inswing doors. The GEM-300 is a versatile choice for access control systems, ensuring the safety of your premises.
GEM Indoor Series Electromagnetic Lock Installation Instruction
Standard Installation
1
2
3
4
Template
Armature Plate
Allen wrench
9
Outswing
Power
12.7mm 8mm
Hollow Metal Door
6.8mm for M8-1.25 thread
Reinforced Door
12.7mm 8mm
Solid Door
36mm
5
Rubber Washer
6
77
8
Outdoor
Outdoor
Outdoor
Recommendation:
For Micro EM-locks (300 LBS), maximum thickness of door is 44 mm.
For Mini EM-locks (600 LBS), maximum thickness of door is 50 mm.
For Midi EM-locks (800 LBS), maximum thickness of door is 48 mm.
For Maxi EM-locks (1200 LBS), maximum thickness of door is 46 mm.
Fold the mounting template 90°
Place the template to the proper
position of the door and frame.
Mark the hole positions of the
template on the door and frame.
Drill the holes according to the
marks.
Fix the mounting plate on the
door with mounting screws
Use the Allen wrench and fixing
bolts to tighten the electromagnetic
lock to mounting plate
Connect the power and test the
unit.
Fasten the mounting plate with
the mounting screws. The position
of the mounting plate should be
adjustable.
The rubber washer makes the
surface of the armature plate
adjustable in order to completely
fit the surface of magnetic lock.
Please install the armature plate
as illustrated here. (Dimensions
of the holes depend on the door
types illustrated below.)
Drill a Ø8mm hole through
door on closing side.Enlarge
to Ø12.7mm by a sexnut
blot on the opening side.
The depth is 36mm.
Drill a Ø6.8mm hole
and tap on closing side
a M8x12.5 thread.
Drill a Ø8mm hole through
door, on closing side.Enlarge
to Ø12.7mm by a sexnut blot
on the opening side.
LZ bracket for Inswing doors
2
Use the fixing bolt to tighten the
electromagnetic lock on L bracket
1
Find a mounting location on the
door frame for the L bracket. Make
sure that the door is still closeable.
Close the door and connect the
power.
4
Insert the guide pins into the
armature plate.
3
567Power
Outdoor
Finish
Outdoor
Power
Assemble the Z bracket, and make
sure that the position of the Z bracket
is adjustable.
Fasten the armature plate to the Z
bracket (Must add rubber washer)
After the maglock attracts the
armature plate, adjust the Z
bracket to fit the door.
Fasten the Z bracket to the door
Basic Installation Concept & Accessories
EM Lock
Glass
UBK Bracket For
Frame
Glass
Door
Glass Frame & Glass Door
Inswing
Door
Door
Frame
EM Lock
EM Bracket For
Inswing Door With Cover
Inswing
LZ Bracket For Inswing Door
Door
Door
Frame
EM Lock
Inswing
Door
Door
EM Lock
Outswing
Frame
Standard Installation
Door
Door
Glass
Frame
EM Lock
U Bracket For Glass Door
Outswing
EM Lock
Door
L Bracket For Outswing Door
Frame
Door
Outswing
Cable Wire
Mounting Plate
Self-tapping
Screw x10
Allen Wrench
Electromagnet x2
Armature
Plate x2
Guide Pin x4
Rubber
Washer x2
Armature
Screw x2
Cover Plate
Cover Screw x2
Anti Residual
Magnetism
Part x2
Sexnut Bolt
x2
Metal Washer x4
12/24 VDC
Power
Anti-tamper Nut x4
Fixing Screw
x4
250mA/24VDC
500mA/12VDC
Holding Force
Voltage Input
Current Draw
Spec/Model
Cable Wire
Mounting Plate
Self-tapping
Screw x5
12/24 VDC
Power
Fixing Screw
x2
Allen Wrench
Electromagnet
Armature Plate
Guide Pin x2
Rubber
Washer
Armature
Screw
Cover Plate
Cover
Screw
Anti Residual
Magnetism
Part
Sexnut Bolt
Metal Washer
x2
300lbs (136kg)
12/24VDC
GEM-300
250mA/24VDC
500mA/12VDC
600lbs (272kg)
12/24VDC
GEM-600
250mA/24VDC
500mA/12VDC
800lbs (363kg)
12/24VDC
GEM-800
250mA/24VDC
500mA/12VDC
1200lbs (545kg)
12/24VDC
GEM-1200
250mA/24VDC x2
500mA/12VDC x2
600lbs (272kg)x2
12/24VDC
GEM-D600 GEM-D800 GEM-D1200
250mA/24VDC x2
500mA/12VDC x2
800lbs (363kg)x2
12/24VDC
250mA/24VDC x2
500mA/12VDC x2
1200lbs (545kg)x2
12/24VDC
Single Door Double Door
For Outswing Door
Connecting Diagram
Problem Possible Cause Solution
Door does not lock No power
Poor contact between electromagnet and
armature plate
Low voltage or incorrect voltage setting
A secondary diode was installed across
the electromagnetic lock
Misalignment between the armature plate
and electromagnetic lock
Make sure the wires are connected properly
Check that the power supply is connected and works properly
Make sure the lock switch is wired correctly (N.C.)
Make sure if the armature plate is deformed
Make sure the contact surfaces of the electromagnet and armature plate are clean
and free from dust
Make sure the armature plate and electromagnetic lock are aligned correctly
Make sure if the rubber washer was used between magnet lock and armature plate
Ensure the electromagnet lock is set for the correct voltage.
Check for proper voltage at the electromagnetic locks input. If low, determine if the
correct wire gauge is being used to prevent excessive voltage drop.
Remove any diode installed across the magnet for "spike"
suppression. (The magnet is fitted with a metal oxide varistor to prevent back EMF)
Low holding force
Sensor output is not functioning
Trouble Shooting
Models:
+
-
N.O.
COM.
N.C.
Mag Power Input
Sensor Input
+
-
N.O.
COM.
N.C.
Mag Power Input
Sensor Input
Orange: N.O.
White: Com
Brown: N.C.
Timer Adjustment
1~80 seconds
LED indicator
GREEN: Open
RED : Locked
NO LED: No power
Model:GEM-300M
Control Device N.C. contact or
LED indicator
GREEN: Open
RED : Locked
NO LED: No power
Power
Input
SPDT relay
0.5A/125VAC
1A/24VDC
Sensor Input
Power Input
+
-
N.O.
COM.
N.C.
Access Relay
Bond sensor output
N.C. contact output: open status
N.O. contact output: locked status
Bond sensor output
N.C. contact output: open status
N.O. contact output: locked status
Control Device N.C. contact or
Access Relay
Bond sensor output
N.C. contact output: open status
N.O. contact output: locked status
Models:
Door Status Sensor (optional)
Door Status Sensor indicates the door is in an open
or closed status.
Models:
Buzzer Alarm (on the reverse)
Door Held Open Alarm is an auditory feedback for users.
Alarm sounds when the door is not closed for over a specified
time limit. VR timer (Timer Adjustment) is adjustable from
1 to 80 seconds.
12 or 24V
+
-
Auto
switchable
12 or 24V
+
-
Auto
switchable
12 or 24V
+
-
Auto
switchable
(Available for GEM-800MBZ & GEM-1200MBZ)
Relock time delay (Optional)
Ensures the automatic lock mode works after the door is
closed properly and it can be adjusted from 1 to 80 seconds.
Copyright © All rights reserved.
Connecting Diagram
P-MU-GEM Published on: 2021.11.15
Control Device N.C. contact or
Access Relay
12 or 24V
Auto
switchable
Bond sensor output
N.C. contact output: open status
N.O. contact output: locked status LED indicator
GREEN: Open
RED: Locked
NO LED: No power
Timer Adjustment
Green LED
Red LED
SPDT relay
Sensor in
1~80 seconds
0.5A/125VAC
1A/24VDC
Power Input
Lock Sensor Input
N.C.COM N.O. RST RST
JP Setting
(PCB back)
Models:
GEM-800MDS-TD-LD, GEM-800MTD-LD
GEM-1200MDS-TD-LD, GEM-1200MTD-LD
Relock time delay (Optional)
Ensures the automatic lock mode
works after the door is closed properly
and it can be adjusted from 1 to 80
Models: TD series
Orange: N.O.
White: Com
Brown: N.C.
Door Status Sensor (optional)
Door Status Sensor indicates the
door is in an open or closed status.
Models: DS series
Green LED (Default)
Red LED
seconds.
Control Device N.C. contact or
Access Relay
Control Device N.C. contact or
Access Relay
GEM-300, GEM-600, GEM-800, GEM-1200
GEM-D600, GEM-D800, GEM-D1200
GEM-600MDS, GEM-800MDS, GEM-1200MDS
GEM-D600MDS, GEM-D800MDS, GEM-D1200MDS
GEM-600M, GEM-800M, GEM-1200M
GEM-D600M, GEM-D800M, GEM-D1200M
GEM-600MTD, GEM-800MTD, GEM-1200MTD
GEM-D600MTD, GEM-D800MTD, GEM-D1200MTD
GEM-D800MBZ & GEM-D1200MBZ)
-
1
-
2
Gianni GEM-300 electromagnetic lock provides reliable security for your doors with a holding force of 300 lbs. Suitable for both single and double doors, it operates on 12/24VDC power and features adjustable current draw. Installation is a breeze with included accessories like the LZ bracket for inswing doors. The GEM-300 is a versatile choice for access control systems, ensuring the safety of your premises.
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