Bell & Gossett P2001489 Integrated Technologic with Sensorless Control - Manual (Page 46)

Warning/Alarm Description Cause Remedy
12 — Torque limit The torque has exceeded
the value in 4–16 Torque
Limit Motor Mode or the
value in 4–17 Torque Limit
Generator Mode. 14–25
Trip Delay at Torque Limit
can change this from a
warning only condition to a
warning followed by an
alarm.
If the motor torque limit is
exceeded during ramp up,
extend the ramp up time.
If the generator torque limit
is exceeded during ramp
down, extend the ramp
down time.
If torque limit occurs while
running, possibly increase
the torque limit. Be sure the
system can operate safely at
a higher torque.
Check the application for
excessive current draw on
the motor.
13 — Over current The inverter peak current
limit (approx. 200% of the
rated current) is exceeded.
The warning lasts about 1.5
seconds, then the
frequency converter trips
and issues an alarm. This
fault may be caused by
shock loading or fast
acceleration with high
inertia loads. If extended
mechanical brake control is
selected, trip can be reset
externally.
Remove power and check if
the motor can be turned.
Check that the motor size
matches the frequency
converter.
Check parameters 1–20
through 1–25 for correct
motor data.
14 — Ground (earth) fault There is current from the
output phases to ground,
either in the cable between
the frequency converter and
the motor or in the motor
itself.
Remove power to the
frequency converter and
repair the earth fault.
Check for ground faults in
the motor by measuring the
resistance to ground of the
motor leads and the motor
megohmmeter.
15 — Hardware mismatch A fitted option is not
operational with the
present control board
hardware or software.
Record the value of the
following parameters and
contact your Xylem
supplier:
• 15–40 FC Type
• 15–41 Power Section
• 15–42 Voltage
• 15–43 Software
Version
• 15–45 Actual
Typecode String
• 15–49 SW ID Control
Card
• 15–50 SW ID Power
Cord
• 15–60 Option
Mounted
• 15–61 Option SW
Version
Troubleshooting
44 Integrated Technologic ® with Sensorless Control INSTRUCTION MANUAL