Toshiba VF-SX - Manual (Page 156)

TOSHIBA
16-5
TABLE 16-2: (Continued)
Error Symptoms Possible Cause »nd Remedy
Motor does not rotate. 1. Incorrect wiring, open circuit, power
failure at the input, output, or power
line. Confirm that CHARGE lamp is on.
2. When operating from the touchpad confirm
that the “PANEL CONTROL" LED is on.
jPANEU I
Press the key as required.
3. Confirm that the operating frequency is
set to desired frequency.
4. Confirm that terminal ST-CC is shorted.
Short terminals if necessary.
5. Check to see if a trip has occurred, or
if the auto-restart preparation is on. If
tripped, remove cause and reset drive.
6. The load on the motor is too heavy.
Decrease the load or increase the rating
of the drive.
7. If
P
is displayed on the LED monitor the
input voltage is too high. Reduce
voltage to 240 VAC or less._______________
The motor acceleration
or deceleration is not
smooth. 1. The setting for the acceleration time
[ R C C
] and deceleration time [rf
f C]
is too short.
Lengthen the acceleration time or the
deceleration time.
The motor speed is too
high or too low.
1. The motor voltage specifications are not
appropriate. Adjust the motor voltage to
the specifications.
2. The motor terminal voltage is low. Check
the output voltage decrease and output
voltage adjustment set values. Increase the
wire size if necessary.
3. The increased deceleration rate for the
gear, etc. is not correct. Check the
increased deceleration rate for the gear,
etc.
4. The output frequency setting is not correct.
Check the setting of the output frequency
range. •
5. Adjust the carrier frequency.________________
The motor "pulses’
during operation.
1. The load is too heavy or too light.
Decrease the load variation. Hake sure it
matches the drive characteristics.
2. The inverter and motor rating values do not
match. Make sure the load matches the drive
characteristics.