Chamberlain MADCBB - Manual (Page 17)

17
SUGGESTED LOOP SENSOR LOCATIONS
Do not allow control devices to be within 10 feet of gate or operator.
RECOMMENDATIONS:
• If vehicle detectors are used to open or close the gate, use of the presence
contacts are recommended. Using the pulse contacts will REDUCE the gate’s safe
operation.
• If closing timer is to be used, use ONLY on a dedicated free exit.
• Close loop must be centered under gate arm.
FREE EXIT ON VEHICLE APPROACH
Gate will open when sensed by exit loop and then close once the close loop is
cleared. If the vehicle pulls up to the exit loop and then backs away, it will close.
Space between loops will be 4 to 10 feet.
Terminal #7 is backaway (free exit).
Terminal #6 is close input.
ENTRY WITH ACCESS CONTROL DEVICE
Gate will open when activated by an access control device. When vehicle passes and
clears close loop, gate will close.
NOTE: If a second vehicle tail-gates and is sensed at the close loop, gate will stop its
closing motion until loop is cleared again.
Terminal #6 is close input.
Terminals #1, 2, and 3 are open inputs.
DUAL DIRECTION AS ENTRY OR FREE EXIT
Dual direction is a combination of both of the above configurations to provide the
ability for traffic to enter or exit in the same lane.
Space between loops will be 4 to 10 feet.
Back Away Loop
(Free Exit)
Back Away Loop
(Free Exit)
Mega Arm
Mega Arm
Mega Arm
Close
Loop
Close
Loop
Close
Loop
Card Reader
Tele-entry
Radio Control
Card Reader
Tele-entry
Radio Control
ADDITIONAL FEATURES »
SUGGESTED LOOP SENSOR LOCATIONS