CALIMET CM9-603 Loop Detector Instruction Manual
- June 12, 2024
- CALIMET
Table of Contents
CM9-603 Loop Detector
Instruction Manual
CM9-603 Loop Detector
Wiring Diagram
The harness contains a reverse loop, phantom loop, and exit loop. You will
need a separate loop detector for each loop.
Loop wires go into the left side of the block terminal. The terminal accepts
loop wires for Exit Loops, Phantom Loops, and Reverse Loops.
Adjust the sensitivity from 0-7. The sensitivity is the blue potentiometer on
the side of the loop detector. We generally recommend setting the sensitivity
to 5 or 6.
When finished, use screws to mount the harness underneath the gate operator chassis, on the back of the power compartment. You will see 4 transparent holes that you can use to drill in 4 screws (not included).
Move the cable from the loop detector harness up into the circuit board
compartment, there will be a small circular hole large enough for the cable to
go through. Connect the wires based on the wiring diagram in the previous
page.
Note: If using the Safety and/or Phantom loops, remove the black jumper guard
in Figure A, page 1. On the gate operator circuit board on the bottom right
side, remove the wire that joins 24V-COM and SAFETY together. If using the
exit loop only, disregard this step.
Exit Loops
An exit loop opens the gate automatically when a car approaches the gate.
A reverse loop is a loop that reverses the direction of a closing gate if a
car drives over it. It will also hold a gate open if a vehicle stops over the
loop. If the gate is fully closed and a vehicle drives over it, the gate will
not open.
A phantom loop is a reverse loop located inside the property that covers the
path of an opening swing gate. The phantom loop prevents the opening swing
gate from hitting a car in its path.
Loop wires are installed 1.5″ underground by cutting the concrete with a circular saw. The typical size loop is 8×4′. Common loop wires are size 16 or 18 AWG stranded copper XLPE (cross-linked polyethylene) electrical wire. 3 layers of turns are required for a typical 4×8′ loop. For different size loops, use 4 turns for 10-20ft in perimeter, 3 turns for 20-32ft in perimeter, and 2 turns for 32-98ft in perimeter. The wire ends must be twisted back into the gate operator with a minimum of 6 twists per foot. The twisted ends must be placed inside a PVC conduit. Use caulk or sealant to seal the ground once finished.
| Loop Size (Sq ft) | Number of Turns |
|---|---|
| 6′ to 12′ | 6 |
| 13′ to 20′ | 5 |
| 21′ to 60′ | 4 |
| 61′ to 240′ | 3 |
| 241’+ | 2 |