Operation Protection; Tuning Error; Auto-Tuning Failed - Fuji Electric FRN0001C2S-2A FRN0002C2S-2A FRN0004C2S-2A FRN0006C2S-2A FRN0010C2S-2A FRN0012C2S-2A FRN0020C2S-2A FRN0025C2S-2A FRN0033C2S-2A FR Instruction Manual

[ 16 ]

Operation protection

er6
Problem An incorrect operation was attempted.
Possible Causes
(1) The key was
pressed when H96 = 1
or 3.
(2) The start check function
was activated when H96
= 2 or 3.
[ 17 ]

Tuning error

er7
Problem

Auto-tuning failed.

Possible Causes
(1) A phase was missing
(There was a phase
loss) in the connection
between the inverter
and the motor.
(2) V/f or the rated current
of the motor was not
properly set.
(3) The wiring length
between the inverter
and the motor was too
long.
(4) The rated capacity of the
motor was significantly
different from that of the
inverter.
(5) The motor is a special
type such as a
high-speed motor.
What to Check and Suggested Measures
Check if the key was pressed when a run command had been
entered from the input terminal or through the communications link.
 If this was not intended, check the setting of H96.
Check if any of the following operations has been performed with a
run command being entered.
- Turning the power ON
- Resetting the alarm
- Switching the enable communications link LE operation
 Review the running sequence to avoid input of a run command
when this error occurs.
If this was not intended, check the setting of H96.
(Turn the run command OFF before resetting the alarm.)
What to Check and Suggested Measures
 Properly connect the motor to the inverter.
Check whether the data of function codes matches the motor
specifications.
Motor 1: F04, F05, H50 through H53, P02, and P03
Motor 2: A02, A03, A16, and A17
Check whether the wiring length between the inverter and the motor
exceeds 50 m (164 ft).
 Review, and if necessary, change the layout of the inverter and
the motor to shorten the connection wire. Alternatively, minimize
the wiring length without changing the layout.
 Disable both auto-tuning and auto-torque boost (Set the data of
F37 or A13 to "1").
Check whether the rated capacity of the motor is three or more
ranks lower, or two or more ranks higher than that of the inverter.
 Replace the inverter with one with an appropriate capacity.
 Manually specify the values for the motor parameters P06, P07
and P08 or A20, A21 and A22.
 Disable both auto-tuning and auto-torque boost (Set the data of
F37 or A13 to "1").
 Disable both auto-tuning and auto-torque boost (Set the data of
F37 or A13 to "1").
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