Door
Movement
Only moves
in one
direction
Only try's to
Close
Only try's to Open
Moves in one
direction, then
reverses and
stops
Continues to
autoreverse
YES
NO
NO
NO
Forward speed
pot not turned up
Reverse speed
pot not turned up
YES
RTDP has travel
below 0 or above
4000
Manually move door
to closed position
and adjust
transducer per
manual
YES
Transducer/A-D
converter wiring
loose
Current Limits
set to low on
motor control
Arm binding in
slider block
Terminal block
wiring loose
Push Plate
Malfunctioning
YES
Check/Replace
Push-plate
Adjust current
limit per step 16
of installation
procedure
Check that wiring @
transducer & A/D
converter are secure
Check wiring from
terminal strip to
PLC
Adjust linkage per
step 5 of
installation
procedure
RTDP reads 4000
& doesn't change
Turn up forward
speed pot
Assure power to A/D
Converter. OR Assure
green & white wire is
connected properly at
transducer
PLC Output relay
not working
Replace PLC if
relays are not
making
Screws on Blue
terminal block on
KB motor control
are not secure
Rev. 'E' series &
above
Tighten set
screws 1/2 turn
past 'snug'
Turn up reverse
speed pot
NO
Also reference
Worm Gear on
Components
page
Next Page
Version: 1.4
Troubleshooting Guide
