ACS 300 User’s Manual 77
Chapter 8 - Fault Tracing
(8) UNIT FAULT Inverter control unsuccessful. • Switch power off.
• If fault persists, contact your
nearest ACS 300 supplier.
(9) MOTOR TEMP ACS 300 has calculated that
the motor is overheated. As the
fault indication is based on cal-
culated temperature rise, the
motor may be within safe tem-
perature range.
• Check the motor temperature.
If it is within acceptable range,
adjust TEMP LIM and I LIMIT
and restart.
• Check the motor sizing with
respect to the load.
(11) UNIT FAULT
(12) UNIT FAULT
(13) UNIT FAULT
Charging circuit defective. • Contact your nearest ACS 300
supplier.
Failure in reading Analogue/
Digital input.
Modulator error.
(14) UNIT FAULT
(15) UNIT FAULT
EEPROM error • Disconnect the ACS 300 from
the AC line. Wait 30 s.
Reconnect the ACS 300 to the
AC line and start.
Identification error • Contact your nearest ACS 300
supplier.
THE PANEL DOES
NOT FUNCTION
CHECK:
• the contrast of the panel
• the panel connection
Fault indication Possible cause Remedy
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