Power Connections
SWITCH
+
-
INCORRECT
CORRECT
+
-
SWITCH
FILTERED DC SUPPLY
FILTERED DC SUPPLY
SWITCH
+
-
INCORRECT
CORRECT
+
-
SWITCH
FILTERED DC SUPPLY
FILTERED DC SUPPLY
INCORRECT
CORRECT
8371/ 8372 Electromagnetic Lock Installation Instructions
(Continued)
3
Fig. 1
Fig. 2 – Lock Mounting
Anti-tamper
screw
Wiring cavity
screw
Captive
mounting
bolts
Fig. 3
Anti-tamper screw
(under wiring cavity)
NOTE: All RCI electromagnetic locks must be powered with filtered
and regulated DC power supplies such as the RCI 10 Series UL Listed
power supply. RCI offers a full line of power supplies and switching
devices that are suitable for use with the 8371 and 8372 Surface
MiniMag
®
locks.
To Ensure Instant Release All switching devices must be wired in between
the DC power source and the positive terminal of the lock as shown.
Switching the negative power supply line will not allow the lock to
release immediately. RCI electromagnetic locks contain MOV’s for
surge suppression and do not require any additional suppression to
be added during installation. The installation of diodes across the lock
input terminals will cause a delay in release.
Anti-Tamper Feature - Two screws prevent insertion of an Allen
wrench into the captive mounting bolt opening on the bottom of the
lock. Fig. 2 shows their location. One screw also secures the wiring
cavity cover. The mounting plate cannot be separated from the lock
without removing these two screws. There is an additional anti-
tamper screw under the wiring cavity cover. See Fig. 3.
Specifications
Mechanical: including 3/16” [5mm] mounting bracket:
8371 Lock Dimensions:
1”D x 1-7/8”W x 9-3/8”L (25 x 48 x 238mm)
8372 Lock Dimensions:
1”D x 1-7/8”W x 18-3/4”L (25x 48 x 476mm)
Armature Plate Dimensions:
1/2”D x 1-1/2”W x 7-1/4”L (13 x 38 x 185mm)
Electrical:
Voltage: 12VDC or 24VDC
Current: Max 0.52A at 12VDC (each lock on 8372 model)
Max 0.26A at 24VDC (each lock on 8372 model)
SCS Output Relay*:
SPDT relay. Contacts rated at 1.0A@24VDC
DSS Reed Switch*: Magnetically actuated SPST switch.
Contacts rated for 0.20A @12VDC and 0.12A @ 24VDC
*
Effective for either resistive or inductive loads
(power factor
≥
0.6 with inductive loads)
Environmental:
Not for use in outdoor environments.
Circuit board operating temperature: 32˚ to 120˚F (0˚ to 49˚C)
NOTE: Specifications subject to change without notice.
Inspection and Maintenance
This product and all related accessories or parts must be inspected
and maintained on a quarterly basis. Contacting surfaces of the
electromagnetic lock and armature plate must be kept free of
contaminating materials. Surfaces must be cleaned periodically
with a non-abrasive cleaner.
All mounting fasteners must be inspected on a quarterly basis.
When properly installed, the ends of the armature plate allow a
slight movement but the plate will feel secure when grasped at
the bolt. There should be no movement to the mounting bracket
or housing of the electromagnetic lock.
For added safety, thread locking compound has been provided for
the armature plate bolt and the four captive electromagnetic lock
mounting screws.
WARNING: Improper installation, maintenance, inspection or usage
of the product or any related accessories or parts may cause the
electromagnetic lock, armature plate and associated hardware
to disengage and fall, causing serious bodily injury and property
damage.