Spiral
®
SST and STT Prewire Installation Manual
Spiral
®
SST and STT Prewire Installation Manual
■
1072124-0
■
Rev 03
■
01/22
33
How to adjust the proximity sensor
What’s the problem?
The controller tracks the position of the manual break release through a magnetic sensor located
in the motor. In some installation environments, the sensor needs to be adjusted from the factory preset to correctly
track the brake release.
WARNING
Do not perform this procedure
until the power disconnect is in
the OFF position and a lockout/tagout is complete.
Contact with high-voltage wires, or the door being activated
unexpectedly,
can cause death or serious injury.
1
At the motor,
remove
the brake release
lever.
DO NOT
remove the cable. The play in the
spring allows it to turn with the release
lever until it is free of the motor.
F211 E-Stop Ext1
Emergency Stop
Door
is
Stopped
F211 E-Stop Ext1
Emergency Stop
Lever down:
brake released
Lever up:
brake reset
Controller
No action is needed
Reset the sensor
10mm
2
Remove
the four screws and the
bottom cover of the motor.
3
Check
the distance between the sensor and the brake release arm
a
.
It should be .03”/.76mm, which is the
thickness of a credit card.
To adjust the sensor, first
loosen
the outer nut
b
, then
tighten
the inner nut
c
to secure it in place.
4
Test
the manual brake release again.
If the controller displays the F211 error on reset,
repeat these steps and retest.
If the controller displays “Door Held Open”,
the issue is resolved.
Reinstall
the motor cover and the brake release lever.
#2
KEEP
REUSE
0.03" / 0.76 mm
17mm
b
a
c