8.
To verify that the operator recognizes the
target magnet, turn off both DC and AC power
switches and watch the display go blank. Then,
turn both switches on. The operator beeps
indicating Limit Relearn Mode. The gate then
travels about 6 inches (15cm) in the open
direction and stops. The buzzer beeps again
and the gate travels in the close direction at a
rate of ½ ft/s until the target magnet passes the
target sensor. The buzzer sounds one last time,
the operator resets, and “GATE CLOSED”
appears on the display.
INSTALLATION
9.
If “LEARN OPEN” appears, then the target
magnet was not detected. Check chain
alignment and make sure the target magnet
passes across the face of the sensor. Repeat
steps 6 - 8. If you are still having dif
fi
culty with
the operator learning its limits, re-install the
target magnet. See "Establishing the Open &
Close Limits" on page 27.
CAUTION
When the gate is CLOSED, the target magnet
should stop between the idler wheel and the
roller chain sprocket. The target magnet MUST
NOT enter the sprocket teeth. See Figure 20.
Figure 20. Target Magnet Installation Front and Rear
PUBLIC
SECURE
Idler
Wheel
Target
Sensor
(LH gate)
Roller chain sprocket
Second target
sensor is not used
WŽƐŝƟŽŶŽĨƚŚĞƚĂƌŐĞƚ
magnet when the gate
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FRONT INSTALLATION
REAR INSTALLATION
OPEN
OPEN
ŚĂŝŶŵŽƟŽŶ
WŽƐŝƟŽŶŽĨƚŚĞ
target magnet
when the gate
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MX4505 Rev. E ©2020
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