8371/ 8372 Electromagnetic Lock Installation Instructions
(Continued)
2
SCS (Security Condition Sensor) with LED
This feature can detect the quality of the locking bond between the
surface of the magnet and the armature plate. The sensitivity of this
feature is such that a foreign object with a thickness of .007” (.18mm)
is sufficient to allow the sensor to detect a problem.
Due to the sensitivity of this feature and the necessity to maintain a
reliable locking bond, these surfaces must be kept free of contaminating
materials. Both the lock surface and the armature plate must be cleaned
periodically with a non-abrasive cleanser. Alignment of armature plate
and magnet is required to ensure proper function of sensor.
DSS (Door Status Sensor)
The DSS option monitors the position of the door upon which the lock
is installed. A SPST reed switch eliminates the need for extra sensors
to be installed on the door for notification of security or access control
systems. The DSS option comes with a magnet pre-installed into the
lock armature plate for signaling the reed switch in the housing when
the door is closed. Care should be taken during the final testing of the
lock to ensure that the DSS option is operating in the desired manner.
Magnet power from
Power Supply
+12/24VDC input
- (Ground)
Jumper
12VDC
Jumper
24VDC
(preset)
Power Input Requirements
MODEL
12VDC
24VDC
8371
0.52A
0.26A
8372
1.04A
0.52A
2 x BLUE LEADS Normally Open
FOR MODELS WITH OPTIONAL DSS
contacts are rated 0.20A@12VDC
and 0.12A @ 24VDC
shown with Door Open
Wiring : For Unmonitored or DSS Sensor Models
12
24
12
GB
R
LED
R
B
G
HR
-
VDC
C
NC
NO
GB
R
LED
Voltage Jumper
s
}
Optional SCS Sensor
SPDT Output contacts rated
for maximum 1.00 Amperes
at 24VDC
Common
Normally Closed
Normally Open
2 x BLUE LEADS Normally Open
Optional DSS
contacts rated at
0.20A@12VDC and 0.12A @ 24VDC
Both the SCS and DSS options are shown
with Door Open
Tip:
Fully depress orange tab to insert wires
-
LED
RB
G
GB
R
LED
12
24
12
R
B
G
HR
VDC
C
NC NO
Voltage Jumper
s
}
Optional SCS Sensor
SPDT Output contacts rated
for maximum 1.00 Amperes
at 24VDC
Common
Normally Closed
Normally Open
Optional DSS
contacts rated at
0.20A@12VDC and 0.12A @ 24VDC
Both the SCS and DSS options are shown
with Door Open
Tip:
Fully depress orange tab to insert wires
2 x BLUE LEADS Normally Open
8371 SCS and 8372 SCS
Side 1
8372 SCS
Side 2
Wiring : For SCS or SCS/DSS Combination Models
Green LED indicates door locked with secure bond.
Red LED indicates door unlocked or poor bond.
UL 294 Performance Ratings:
Access Control Line Security : Level I
Destructive Attack : Level I
Endurance : Level IV
Standby Power : Level I
