Rockwell Automation 1336S Plus FRN 1.xx-5.xx - Manual (Page 136)

6–4 Troubleshooting
Name & Fault # Action Description
Motor Stall Fault
06 Current remained over 150% of
[Rated Amps] for more than 4
seconds. If the motor is drawing excessive
current (over 150%), the motor load
is excessive and will not allow the
drive to accelerate to set speed. A
longer accel time or a reduced load
may be required.
Neg Slope Fault
35 Drive software detected a
portion of the volts/hertz curve
with a negative slope. Check drive programming.
*1.[Maximum Voltage] parameter
must be greater than [Base
Voltage].
*2.[Maximum Freq] parameter must
be greater than [Base Frequen-
cy].
3. [Base Voltage] parameter must
be greater than [Start Boost].
4. If the [DC Boost Select] parame-
ter is set to “Full Custom,” [Base
Voltage] must be greater than
[Break Voltage] and [Break
Voltage] must be greater than
[Start Boost].
* Firmware versions before 2.01 only.
Open Pot Fault
09 An external pot is connected
and the common side of the pot
is open. The drive generates
this fault when the voltage
between TB2-2 and TB2-3
exceeds 3.9V DC. Check the external potentiometer
circuit at TB2, terminals 1, 2 and 3
for an open circuit.
Op Error Fault
11 A SCANport device requests a
Read or Write of a data type
not supported. This will also
occur if:
1. [Motor Type] is set to “Sync
PM” and [Stop Mode Used]
is set to “DC Brake”, or
2. [Motor Type] is set to “Sync
Reluc” or “Sync PM” and
[Speed Control] is set to
“Slip Comp”.
Check programming.
Overcurrent Flt
12 Overcurrent is detected in
instantaneous overcurrent trip
circuit. Check for a short circuit at the drive
output or excessive load conditions
at the motor.
Overload Fault
07 Internal electronic overload trip. An excessive motor load exists. It
must be reduced such that drive
output current does not exceed the
current set by the [Overload Amps]
parameter.
Overtemp Fault
08 Heat sink temperature exceeds
a predefined value of 90
°
C
(195
°
F).
Check for blocked or dirty heat sink
fins. Check that the ambient
temperature has not exceeded 40
°
C (104
°
F).
Overvolt Fault
05 DC bus voltage exceeded
maximum value. Monitor the AC line for high line
voltage or transient conditions.
Bus overvoltage can also be
caused by motor regeneration.
Extend the decel time or install
dynamic brake option.
Phase U Fault
38 A phase to ground fault has
been detected between the
drive and motor in this phase. Check the wiring between the drive
and motor. Check motor for
grounded phase.