SECO-LARM E-941SA-300RQ User manual

NOTE: Products with a model number that ends with “Q” or which have a round green “Q” sticker represent RoHS compliant products.
300-lb Single-Door Electromagnetic Lock
with Reversible Magnet
E-941SA-300RQ
Manual
Reversible magnet for left or
right-swing doors.
Perfect for cabinets, small
enclosures, or pedestrian gates.
Selectable 12/24 VDC operation.
MOV surge protection
Complete mounting hardware
included.
Detachable mounting bracket
included.

SECO-LARM ELECTROMAGNETIC LOCK
2 SECO-LARM U.S.A., Inc.
Table of Contents:
Introduction:
Features:
The E-941SA-300RQ electromagnetic lock is the ideal way to secure a door against unauthorized
entry. When power is applied to the electromagnetic lock, it creates an extremely strong magnetic
field. The electromagnet is strongly attracted to the steel armature plate which is mounted on the
secured door. Once the electromagnet is deactivated, the secured door will function normally without
any residual magnetism.
Anodized aluminum.
No residual magnetism.
MOV surge protection.
Magnet can be reversed for use with right-swing or
left-swing doors (default left-swing).
Adjustable mounting bracket.
Complete mounting hardware for typical installations.
“L” brackets, “Z” brackets and “U” brackets are
available for easy mounting.
Selectable 12/24 VDC.
Detachable faceplate.
Parts List:
1 x Mounting plate
1 x Electromagnet
1 x Armature plate
1 x Armature screw
2 x Steel washers
1 x Rubber washer
1 x Sexnut bolt
2 x Guide pins
5 x Long self-tapping screws
2 x Hex-head mounting screws
2 x Tamper caps
2 x Allen wrenches
Specifications:
Operating voltage
12 or 24 VDC ±10% (Default 12VDC)
Current draw
12VDC
420mA@12VDC
24VDC
210mA@24VDC
Coil resistance
57±10% per coil (see page 8)
Dimensions
Magnet
77/8”x1”x13/8” (200x24x35 mm)
Armature plate
6”x3/8”x11/4”(152x10x32 mm)
Operating temperature
14°~131° F (-10°~55° C)
Weight
2-lb 13.5-oz (1.3kg)
Installation Notes
Installation
Wiring Diagram
Maximum Wiring Distance
Troubleshooting
Warranty
Introduction
Features
Parts List
Specifications
Overview
Installation Applications
2
2
2
2
3
3
4
4-6
7
7
8
8

SECO-LARM ELECTROMAGNETIC LOCK
SECO-LARM U.S.A., Inc. 3
“L” Bracket and
“Z” Bracket
Electromagnet
Mounting plate
Sexnut bolt
Armature screw
Faceplate
Overview:
Installation Applications:
Long self-
tapping screws
Armature plate
Guide pins
Rubber washer
Steel washers
Hex-head
mounting screws
NOTE: When mounting the electromagnet, it may be necessary to use a “Z” bracket, 1 or 2 “L” brackets, a “U”
bracket and/or plate spacers, depending on the location and the type of door and frame. Use the diagram
below to help decide whether or not an optional bracket will be necessary for installation.
See page 7 for a complete list of SECO-LARM accessories.
.
“L” Bracket
Typical
Installation
“U” Bracket
(Typically for glass doors)
Plate
Spacers
Armature-
Mounting Plate

SECO-LARM ELECTROMAGNETIC LOCK
4 SECO-LARM U.S.A., Inc.
4. Drill two holes in the frame and
three holes in the door as shown
on the template.
3. Place the template against
the door and frame. Mark
where the holes are to be
drilled.
2. Close the door. Find a mounting location on the
door frame near the upper free-moving corner of
the door, or as close as possible to the upper
corner of the door frame opposite the hinges.
Door Frame
Door
Template
1. Read this installation manual thoroughly. A clear understanding of the product and this
manual will make installation much easier.
2. The electromagnetic lock is designed for indoor use ONLY.
3. The most suitable mounting location for the electromagnetic lock may require the use of
additional SECO-LARM accessories such as “Z” brackets, “L” brackets, “U” brackets
and/or spacer plates. Please see the diagram on page 3 to decide if a particular application
requires any mounting accessories. See page 7 for a complete list of SECO-LARM
accessories.
4. Do not run power wires and signal wires in the same conduit as this may cause interference.
5. Do not install a diode in parallel with the electromagnetic lock as this may cause a delay
when releasing the door as well as cause residual magnetism.
6. The best location to install the electromagnetic lock is on the inside of the door that is being
secured with the wiring concealed in the frame to prevent tampering.
1. Fold the mounting template along the dotted line to
form a 90-degree angle.
5. Use a hammer to lightly tap the
guide pins into the guide pin
holes on the armature plate.
Installation:
Installation Notes:
Door Frame
Door
Door Frame
Ideal
Mounting
Location

SECO-LARM ELECTROMAGNETIC LOCK
SECO-LARM U.S.A., Inc. 5
7. Put a rubber washer between the two metal washers,
and place them over the armature screw between
the armature plate and the door. This allows the
plate to pivot around the screw to compensate for
door misalignment.
9.After determining the correct location, install two screws through the mounting plate. Do not tighten. Adjust the
mounting plate into the correct position. Double-check the position by holding the magnet there. Once satisfied
with the position, tighten the two screws. See the diagrams below.
8. Tighten the armature screw enough so that the
armature plate can withstand a break-in attempt, but
loose enough so that the armature plate can pivot
slightly. Make sure the anti-spin guide pins are in the
two guide pin holes.
Mounting Plate
Armature Plate
90
The rubber washer will be
sandwiched between the
two metal washers.
Armature
screw
Long self-tapping screws
Guide pins
6. Depending on the type of door being protected, drill holes according to the diagrams below:
Hollow Metal Door
Solid Core Door
Reinforced Door
1/4” (6.8mm) for M8x1.25 thread
Drill a 5/16” (8mm) dia. hole through the
armature-plate side of the door for the
armature screw. Then drill a 5/8” (16mm)
dia. hole for sexnut screw on the
opposite side of the door.
Drill an 5/16” (8mm) dia. hole on the
door for the armature screw, and drill a
1/2” (12.7mm) dia. and 1” (25mm) deep
hole for the sexnut screw.
Drill a 1/4” (6.8mm)
dia. and 1” (25mm)
deep hole, tap for
M8x1.25 thread.
Tip: Use a thread-locking compound
on the armature screw to ensure
a long-lasting installation.
Metal
washers
5/8” (16mm)
5/16” (8mm)
1/2” (12 .7mm)
5/16” (8mm)

SECO-LARM ELECTROMAGNETIC LOCK
6 SECO-LARM U.S.A., Inc.
11.Once the position of the mounting plate is correct,
screw in the other three long self-tapping screws to
permanently mount the mounting plate.
12. Drill the cable access hole. Run the power leads
through the cable access hole in the mounting plate
and through the hole in the door frame.
13. Remove the faceplate from the front of the
electromagnet. Run the power leads through the
large cable access hole.
14.Push the electromagnet against the mounting plate
so the electromagnet ends are flush with the ends
of the mounting plate. Use the Allen wrench to
screw the hex-head mounting screws through the
bottom of the electromagnet into the mounting
bracket.
Long self-tapping screws
Position a jumper over
the two middle pins for
24VDC operation
Position two jumpers
on all four pins for
12VDC operation
Voltage Selection Jumpers
NOTE: This should be the very last step, as once the
tamper caps are in place they are very difficult to remove.
NOTE: Failure to correctly set the input voltage may cause
damage to the lock.
NOTE: Connect switching devices like push-to-exit switches
between the power source and the positive terminal on the
lock. Connecting switching devices to the negative terminal
may cause a delay in unlocking.
10. Magnet can be reversed depending on whether it is
used for right-swing or left-swing doors.
15. Cut the wires so they are long enough to connect
with the terminal block. Set the voltage using the
selection jumpers based on your input voltage.
16. Connect the power wires according to the wiring
diagram on page 7. Test the unit. Then replace the
faceplate and install the hex-head tamper caps.

SECO-LARM ELECTROMAGNETIC LOCK
SECO-LARM U.S.A., Inc. 7
Wire Length
25ft.
50ft.
75ft.
100ft.
150ft.
200ft.
250ft.
300ft.
400ft.
500ft.
1000ft.
Wire Gauge @ 420mA
20
18
18
18
16
14
14
12
10
10
--
Wire Length
25ft.
50ft.
75ft.
100ft.
150ft.
200ft.
250ft.
300ft.
400ft.
500ft.
1000ft.
Wire Gauge @ 210mA
24
24
22
20
18
18
16
16
14
14
14
24VDC Minimum Wire Gauge:
Wiring Diagram:
Maximum Distance from Power Source to Electromagnetic Lock:
12VDC Minimum Wire Gauge:
l
For a complete chart, please visit www.seco-larm.com
Optional SECO-LARM Electromagnetic Lock Accessories:
Also Available from SECO-LARM:
Wired or Wireless RTE
Plates
*NOTE: Connect switching devices like
push-to-exit switches between the
power source and the positive terminal
on the lock. Connecting switching
devices to the negative terminal may
cause a delay in unlocking.
Position a jumper over
the two middle pins for
24VDC operation
Position two jumpers
on all four pins for
12VDC operation
Voltage Selection Jumpers
“L” bracket
E-941S300R/LQ
“L” & “Z” brackets
E-941S300R/ZQ
“L” & “Z” & “U” brackets
E-941S300R/UQ
Access Control
Power Supply
Digital Access
Keypads
Complete Line of
Electromagnetic
Locks and Strikes
Voltage Converters or
Boosters
EAP-5D1Q
(shown)
SK-2323-SDQ
(shown)
E-941SA-1200
(shown)
ST-LA110-TTQ
(shown)
SD-7202GC-PEQ
(shown)
*

SECO-LARM ELECTROMAGNETIC LOCK
8 SECO-LARM U.S.A., Inc.
Troubleshooting:
LIFETIME LIMITED WARRANTY This SECO-LARM product is warranted against defects in material and workmanship
while used in normal service for the lifetime of the product. SECO-LARM’s obligation is limited to the repair or replacement
of any defective part if the unit is returned, transportation prepaid, to SECO-LARM. Under no circumstances will SECO-
LARM be responsible for any costs or charges for removal, installation, or reinstallation. This Warranty is void if damage is
caused by or attributed to acts of God, physical or electrical misuse or abuse, neglect, repair, or alteration, improper or
abnormal usage, or faulty installation, or if for any other reason SECO-LARM determines that such equipment is not
operating properly as a result of causes other than defects in material and workmanship. The sole obligation of SECO-
LARM, and the purchaser’s exclusive remedy, shall be limited to repair or replacement only, at SECO-LARM’s option. In no
event shall SECO-LARM be liable for any special, collateral, incidental, or consequential personal or property damages of
any kind to the purchaser or anyone else. This lifetime limited warranty is for products sold and installed in the United States
and Canada. For all other countries the warranty is 1 (one) year.
NOTICE: The information and specifications printed in this manual are current at the time of publication. However, the
SECO-LARM policy is one of continual development and improvement. For this reason, SECO-LARM reserves the right
to change specifications without notice. SECO-LARM is also not responsible for misprints or typographical errors.
Copyright © 2010 SECO-LARM U.S.A., Inc. All rights reserved. This material may not be reproduced or copied, in
whole or in part, without the written permission of SECO-LARM.
SECO-LARM U.S.A., Inc.
16842 Millikan Avenue, Irvine, CA 92606 Website: www.seco-larm.com
Tel: [phone] Fax: [phone] E-mail: [e-mail]
mi-E941SA-300RQ.docx
Door does not lock
Check to make sure the wires are securely tightened to the terminal block.
Check that the power supply is connected and operating.
Use a multimeter to check the resistance of coils inside the lock. See below.
Make sure the rubber washer is installed and free from damage.
Door locks, but can easily be forced open
Make sure the electromagnet and armature plate are properly aligned.
Make sure the contact surfaces of the electromagnet and armature
plate are clean and free from rust.
Check the power leads with a multimeter to see if 12 or 24VDC is present.
Use a multimeter to check the resistance of coils inside the lock. See below.
Make sure the rubber washer is installed and free from damage.
Check Voltage Selection Jumper for correct setting.
The electromagnet is fitted with a metal oxide varistor to prevent
interference, so do not install a second diode.
Delay in door releasing
PITGW1
1. Remove the faceplate from the lock.
2. Disconnect the wire harness from the circuit board.
3. Using a multimeter, measure the resistance across:
Red/Green wires, and the Black/White wires.
4. Each coil should test at 57±10%.
5. If one or both of coils shows an open, short, or incorrect
resistance, replace the electromagnet.
White
Black
Green
Red
Wire Harness:
57±10%
57±10%
If the Electromagnet has low or no holding force, check the resistance of the coils by
performing the following steps: