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Table 8. SmartCNX Controller - Alerts
Display
Condition
Description
Alert, Error or Fault
Possible Causes
Solutions
ALERT 1 FORCE
OPEN
Gate forced open.
Alarm will sound.
Gate has been forced off the full close limit
and is being prevented from re-closing.
Will self-clear after an open
or close input.
ALERT 2
DRIFT CLOSED
Gate drifted closed.
Gate has drifted off the full open limit and is
being prevented from re-opening.
Will self-clear after an open
or close input.
ALERT 3 EXCESS
DRIFT
Gate drift in transit -
Advisory only
Alert appears if gate drifts three times in a
five minute period.
Check track to make sure it
is level.
ALERT 4 MOTOR
OVERLOAD
Thermal overload
alert. When alert is
triggered, gate can
only “fully open” until
alert is cleared.
Motor drive heat sink exceeds 195°F.
Alert temporarily disables operator, but
automatically resets itself when it cools
down. May also occur if the heatsink
temperature is 70°F higher than ambient
temperature.
Check gate hardware. Alert
automatically clears when
temperature drops below
threshold.
ALERT 5 BOTH LIM
ACTIVE
(Swing only)
Both limit sensors
are on at the same
time
●
Short in wiring or drive module
connection
●
Failed limit sensor
1. Repair any wiring
issues.
2. Check limit sensors
and replace as
required.
ALERT 6 LIM NOT
RELEASED
(Swing only)
The limit did not
release when
the operator was
commanded to
move.
●
Loose taper clamp.
●
Arm assembly binding.
●
Failed limit switch
1. Tighten taper clamp
2. Check limit sensors
and replace as
required
3. Verify arm condition
ALERT 7
FREQ SHIFT
FAULT*
Hy5B detects a
frequency change
outside normal
range.
Likely causes are poor integrity of loops or
metallic objects within range.
Check lead and roadway
loop wires for problems.
Replace if necessary.
ALERT 8
LOOP SHORTED*
Hy5B detects a loop
shorted to ground.
Caused by inadequate insulation of loop
wires.
Refer to solution above.
ALERT 9
LOOP OPEN*
Hy5B detects a lack
of continuity in loop
wire.
Caused by broken loop wire or wire has
come unplugged from detector.
Refer to solution above.
ALERT 10
I2C BUS ERROR*
Communication
error detected to
a Hy5B vehicle
detector.
Caused by removal of Hy5B or lack of
integrity of socket connection.
Remove and re-install
the Hy5B and press
RESET. Replace Hy5B, if
necessary.
ALERT 11
DETECTOR FAULT*
A problem detected
within an Hy5B
vehicle detector.
Caused by a fault within Hy5B.
Remove and re-install
the Hy5B and press
RESET. Replace Hy5B, if
necessary.
ALERT 12
ON TOO LONG*
An input loop (Hy5B
or box detector
output) is active
for more than 5
minutes.
Caused when SmartCNX Controller sees an
active loop for more than 5 minutes. “Active”
loop can be actual or false.
Check traffic patterns at
site. Loop and lead in wires
should be checked for
problems or replaced.
TROUBLESHOOTING/ALERTS/FAULTS/ERRORS
* This message will also indicate which detector the alert applies to: Exit Loop (ELD), Inside Obstruction Loop (IOLD),
Outside Obstruction Loop (OOLD), or Center Loop (CLD).