Wiring external loop detectors, Exit, Safety – Controlled Products Systems Group HCT5011O3-08 User Manual
Page 23: Caution

21
Strike Open
Push Button
Strike Open
Push Button
24 Volts DC
24 Volts DC
Fire Dept
Key Switch
Fire Dept
Key Switch
M/S Link
M/S Link
Class 2
Supply
Class 2
Supply
Center
Loop
Center
Loop
Safety
Loop
Safety
Loop
Radio
Receiver
Radio
Receiver
Exit
Loop
Exit
Loop
G
G
B
B
A
A
–
–
+
+
OmniControl Surge Suppressor
P/N Q410
Patent Pending
P/N Q410
Patent Pending
®
7
13
12
11
10
9
8
1
6
5
4
3
2
W I R I N G E X T E R N A L L O O P D E T E C T O R S
External 115 Vac
“
Exit
”
Loop Detector -
Allows operator to automatically open for
exiting vehicles.
6
5
3
4
External 115 Vac
“
Safety
”
Loop Detector -
Allows system to stay open when vehicles are
obstructing path.
Caution:
To PREVENT damage to vehicles
shorter than 14 feet, a center loop system should
be installed.
Note:
External 115 Vac Loop Detectors
OUT
Safety
Loop
OUT
Exit
Loop
IN
Safety
Loop
Normally Open
Common
Normally Open
Common
If the “Inside” and “Outside” safety loops are connected
to the same loop detector:
•
They should be series connected to the detector
•
Have the same dimensions.
•
Have the same number of wire turns.