MC521 PRO Control Box
03.23.2017
1.800.7.ACCESS • www.stanleyaccess.com • Document # 204090 REV D 53
Cop
yr
ight 2017 S
tanley Ac
cess T
echnologies, LL
C. All rights r
es
er
ved. R
epr
oduction
in whole or in p
ar
t without the expr
ess wr
itt
en permission o
f S
tanley is pr
ohibit
ed.
If the door:
OPENS TOO SLOWLY
If it remains still is too slow
If it remains too slow
Increase
Open Speed
. Maximum setting 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
until there is good braking.
Increase or decrease
Open Check Boost
until there is good motion entering and in
Open Check
is satisfactory.
When the door braking and motion are under control, reduce the
Open Check
length as desired.
STALLS
during opening without any
mechanical reason
Continues to stall and seems to happen at
the transition 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 time until door motion is suitable.
CREEPS CLOSED
from
Full Open
Increase
Stall Speed
one count at a time until the
Open Position
is stable. To verify new
setting, 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 attachment. Start by installing these set-
tings. Use the guide below to make adjustments to these settings.
SWING DOOR: