Sterling RT - Manual (Page 45)

44 SV01H
Troubleshooting and Diagnostics
Fault Cause Remedy (1)
1L Digital Input
Configuration fault (P121...
P124) More than one digital input set for the
same function Each setting can only be used once (except
settings 0 and 3)
Only one digital input configured for MOP
function (Up, Down) One input must be set to MOP Up, another
must be set to MOP Down
PID mode is entered with setpoint
reference and feedback source set to the
same analog signal
Change PID setpoint reference (P121…
P124) or feedback source (P201).
One of the digital inputs (P121…P124) is
set to 10 and another is set to 11…14.
Reconfigure digital inputs
One of the digital inputs (P121…P124)
is set to 11 or 12 and another is set to
13 or 14.
PID enabled in Vector Torque mode (P200
= 1 or 2 and P300 = 5)
PID cannot be used in Vector Torque mode
J Remote keypad fault Remote keypad disconnected Check remote keypad connections
Low DC Bus Voltage fault Mains voltage too low Check mains voltage
No Motor ID fault An attempt was made to start the drive
in Vector or Enhanced V/Hz mode prior to
performing the Motor Auto-calibration See P300…P399 for Drive Mode setup
and calibration.
n Module communication fault Communication failure between drive and
Network Module. Check module connections
Network Faults Refer to the module documentation. for
Causes and Remedies.
Output fault:
Transistor fault Output short circuit Check motor/motor cable
Acceleration time too short Increase P104, P125
Severe motor overload, due to:
• Mechanical problem
• Drive/motor too small for application • Check machine / system
• Verify drive/motor are proper size for
application
Boost values too high Decrease P168, P169
Excessive capacitive charging current of
the motor cable • Use shorter motor cables with lower
charging current
• Use low capacitance motor cables
• Install reactor between motor and drive.
Failed output transistor Contact factory technical support
O Output fault: Ground fault Grounded motor phase Check motor and motor cable
Excessive capacitive charging current of
the motor cable Use shorter motor cables with lower
charging current
Motor Overload fault Excessive motor load for too long • Verify proper setting of P108
• Verify drive and motor are proper size
for application
. Flying Restart fault Controller was unable to synchronize with
the motor during restart attempt; (P110
= 5 or 6) Check motor / load
(1) The drive can only be restarted if the error message has been reset.