YASKAWA Varispeed f7 User Manual

7-4
Motor Overheating Alarm
The Inverter will stop or will continue
to operate according to the setting of
L1-03.
The motor has overheated.
Check the size of the load and the
length of the acceleration, deceler-
ation, and cycle times.
Check the V/f characteristics.
Check the motor temperature
input on terminals A2 .
Check the setting of E2-01 (motor
rated current).
Motor Overheating Fault
The Inverter will stop according to the
setting of L1-04.
The motor has overheated.
Check the size of the load and the
length of the acceleration, deceler-
ation, and cycle times.
Check the V/f characteristics.
Check the motor temperature
input on terminals A2 .
Check the setting of E2-01 (motor
rated current).
Installed Braking Resistor Over-
heating
The braking resistor is overheated and
the protection function has operated if
it has been enabled in L8-01.
The deceleration time is too short and
the regenerative energy from the
motor is too large.
• Reduce the load, increase the
deceleration time, or reduce the
motor speed.
• Change to a Braking Resistor
Unit.
Internal Braking Transistor Fault
The braking transistor is not operating
properly.
• The braking transistor is damaged.
• The Inverter’s control circuits are
faulty.
• Try turning the power supply
off and on.
• Replace the Inverter if the fault
continues to occur.
Motor Overload
The motor overload protection func-
tion has operated based on the internal
electronic thermal value.
The load is too heavy. The accelera-
tion time, deceleration time, and cycle
time are too short.
Check the size of the load and the
length of the acceleration, deceler-
ation, and cycle times.
The V/f characteristics voltage is too
high or too low.
Check the V/f characteristics.
The Motor Rated Current (E2-01) and
Motor 2 Rated Current (E4-01) is
incorrect.
Check the Motor Rated Current
(E2-01) and Motor 2 Rated Cur-
rent (E4-01).
Inverter Overload
The Inverter overload protection func-
tion has operated based on the internal
electronic thermal value.
The load is too heavy. The accelera-
tion time, deceleration time and cycle
time are too short.
Check the size of the load and the
length of the acceleration, deceler-
ation, and cycle times.
The V/f characteristics voltage is too
high or too low.
Check the V/f characteristics.
The Inverter capacity is too low.
Replace the Inverter with one that
has a larger capacity.
Overtorque Detected 1
There has been a current greater than
the setting in L6-02 for longer than the
setting in L6-03.
-
• Make sure that the settings in
L6-02 and L6-03 are appropri-
ate.
• Check the mechanical system
and correct the cause of the
overtorque.
Table 7.1 Fault Displays and Processing (Continued)
Display Meaning Probable Causes Corrective Actions
and A3
and A3

YASKAWA Varispeed f7 Specifications

General

Brand	YASKAWA
Model	Varispeed f7
Category	Inverter
Language	English