MC521 PRO Control Box
03.23.2017
1.800.7.ACCESS • www.stanleyaccess.com • Document # 204090 REV D 53
Copyright 2017 Stanley Access Technologies, LLC. All rights reserved. Reproduction
in whole or in part without the express written permission of Stanley is prohibited.
If the door:
OPENS TOO SLOWLY
If it remains sll is too slow
If it remains too slow
Increase Open Speed. Maximum seng is 35.
Increase Open Torque.
Increase Open Acceleration.
** Open Torque is also used to set the door open force.
** Open Speeds and Force must comply with UL and ANSI/BHMA A156.19 or 156.10 requirements.
HITS THE OPEN STOP too hard Increase Open Check Length to 45.
Increase Open Brake unl there is good braking.
Increase or decrease Open Check Boost unl there is good moon entering and in
Open Check is sasfactory.
When the door braking and moon are under control, reduce the Open Check length as desired.
STALLS during opening without any
mechanical reason
Connues to stall and seems to happen at
the transion from Open Brake to Open Check
Increase Obstruction Time from .5 seconds to 1.0 seconds.
Make small increases to Open Check Boost.
SPEEDS UP during Open Check Open Check Boost is set too high. Reduce one count at a me unl door moon is suitable.
CREEPS CLOSED from Full Open
Increase Stall Speed one count at a me unl the Open Position is stable. To verify new
seng, door must be cycled fully closed and back to Full Open.
Attachment 11
MC521 Pro Controller Fine Tuning (PAGE 1 OF 1)
Match your actual door to one from the list of doors described in the aachment. Start by installing these set-
ngs. Use the guide below to make adjustments to these sengs.
SWING DOOR:
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