Table 22. Smart DC Controller - Troubleshooting
Display
Condition
Description
Alert, Error or
Fault
Possible Causes
Solutions
ALERT 6 LIM
NOT RELEASED
The limit did not
release when
the operator was
commanded to
move.
z
Broken drive belt.
z
Hardware holding the arm.
z
Tighten taper clamp
(SwingSmart DC)
z
Check/replace drive
belt.
z
Remove debris from
limit area
z
Check limit switches
and replace as
required
z
Check limit plate
z
Release any holds
on the arm.
z
Relearn Limits.
(StrongArmPark DC
and WedgeSmart
DC)
ALERT 7
FREQ SHIFT
FAULT
H y 5 B
h a s
d e t e c t e d a
frequency change
outside normal
range.
Likely causes are poor integrity of
loops or metallic objects within range.
This message will also indicate which
detector alert applies to: Exit Loop
(ELD), Inside Obstruction Loop (IOLD),
Outside Obstruction Loop (OOLD), or
Center Loop (CLD) - (User Relay 22).
Loop lead in wires and
roadway should be
checked for problems
or replaced.
ALERT 8
LOOP SHORTED
H y 5 B
h a s
d e t e c t e d a
loopshorted to
ground.
Caused by inadequate insulation of
loop wires.
Loop lead in wires and
roadway should be
checked for problems
or replaced.
ALERT 9
LOOP OPEN
H y 5 B
h a s
detected a lack
of continuity in
loop wire.
Caused by broken loop wire or wire
has come unplugged from detector.
Loop and lead in wires
should be checked for
problems or replaced.
ALERT 10
12C BUS ERROR
Smart DC
Controller has
detected a
communication
error with a Hy5B
vehicle detector.
Caused by removal of Hy5B or lack
of integrity of socket connection.
This message will also indicate which
detector alert applies to: Exit Loop
(ELD), Inside Obstruction Loop (IOLD),
Outside Obstruction Loop (OOLD), or
Center Loop (CLD) - (User Relay 22).
Remove and re-install
the Hy5B and press
RESET. Replace Hy5B,
if necessary.
REFERENCE
MX3640-01 Rev. E ©2020
SwingSmart DC Programming and Operations
119
