MA7200 PLUS Operating Manual
TECO – Westinghouse Motor Company Fault Messages, Causes and Remedies
Cont.
Table 10.1.1.1 Fault Messages, Causes and Remedies (
Cont
.)
LCD Display
(English)
Fault
Fault Description
Fault
Contact
Output
Fault Causes
Remedy
Inverter Over
Load
The electronic thermal sensor
detects inverter overload while the
output current exceeds 112% of
rated value. (inverter protection)
ON
Improper rated current
(Cn-09) setting
Set proper V/f characteristic.
Set proper rated current (Cn-09)
If inverter is reset repetitively before fault
removed, the inverter may be damaged.
Excess Load
Excess Load is detected while the
output current is larger than or
equal to the setting of Cn-26.
(machine protection)
ON
Machine errors or overload
Check the use of the machine.
Set a higher protection level (Cn-32).
Ext. Faul t3
External fault signal
ON
Fault input of external
signal
,
,
,
and
.
Identify the fault signal using Un-11.
Ext. Fault 5
External fault signal
ON
Ext. Faul t6
External fault signal
ON
Ext. Fault7
External fault signal
ON
Ext. Fault8
External fault signal
ON
Inverter
EEPROM
EEPROM fault
ON
Disturbance of external
noise
Excessive impact or
vibration
Reset NVRAM by running Sn-03.
Replace the control board if the fault
can’t be cleared.
EEPROM (BCC, no.) is bad.
ON
Inverter A/D
A/D converter (inside the CPU)
fault
ON
PG Over Sp. Excessive PG speed fault
ON
Improper setting of ASR
parameter or over-speed
protection level.
Check the parameters of ASR and the
protection level.
PG Open
PG is open-circuit
ON
The PG wiring is not
properly connected or
open-circuit.
Check the PG wiring.
Sp.Deviat Over Excessive speed deviation
ON
Improper setting of ASR
parameter or speed
deviation level.
Check parameters of ASR and speed
deviation level.
Cont.