Fuji Electric FRENIC-Ace series, Руководство пользователя

Страница: 161 / 788

4.8 Configuring Function Codes for Drive Controls
4-25
TE
ST
RU
N
P
RO
CE
DU
R
E
Chap 4
■
Tuning errors (For PMSM)
Improper tuning would negatively affect the operation performance and, in the worst case, could even cause hunting
or deteriorate precision. Therefore, if the inverter finds any abnormality in the tuning results or any error in the tuning
process, it displays er7 and discards the tuning data.
When the tuning error ( er7 ) appears, check that:
- The inverter's output (secondary) circuit is not opened.
- The mechanical brake is released.
- The terminal command
BX (“Coast to a stop”) is ON.
- Any function code is wrongly configured.
Listed below are possible causes that trigger tuning errors and measures.
Possible tuning
error causes
er7
error
subcode
Details and Measures
Sequence error
7
8
9
Before completion of tuning, the run command has been turned OFF. Or during
tuning, terminal command STOP (“Force to stop”) or BX (“Coast to a stop”) has
been entered.

Do not stop the inverter running until completion of tuning.
Output current
error
6
10
During tuning, an excessively large current has flown.

Release a mechanical brake or take any other measure to remove the cause
resulting in overcurrent.
Tuning
frequency error
(only when
P04=2)
13
The maximum frequency or the frequency limiter (high) has limited the output
frequency.

Increase the F03 and F15 settings to values greater than 50% of the base
frequency 1 (F04).
Occurrence of
alarm
15
During tuning, any alarm has occurred.

Check the contents of the multiple alarm and remove the error cause. For
details, refer to Chapter 6 “TROUBLESHOOTING.”
Acceleration
timeout
(only when
P04=2)
18
The output frequency has not reached 50% of the base frequency within the
specified acceleration time “F07×300%”.

Increase the F07 setting.
Parameter
setting error
5003
The rated impedance or rated inductance is out of the effective range.

Check the F04, F05 and P03 settings.
Magnetic pole
position
calculation
failure
5005
When P30 = 1 or 3: The saliency ratio of the motor inductance is low.
When P30 = 2: The motor has no magnetic saturation characteristic.

If this error occurs when P30 = 1, decrease the P87 setting. Note that it may fail
to tune the motor that does not easily cause magnetic saturation.

If this error occurs when P30 = 2 or 3, change the P30 setting to “0” and adjust
the F24 setting (Starting Frequency 1, Holding time) by gradually increasing it
in increments of 0.5 to 5.0 s until rotational tuning succeeds.
Lack of
magnetic
saturation
5056
The magnetic saturation characteristic of the motor is low so that the inverter has
failed to discriminate the magnetic pole position.

Gradually increase the P87 setting up a maximum of 120%. If it produces no
effect, change the P30 setting to “0” or “3,” and the F24 setting to 0.5 to 5.0 s.
Excessive
magnetic
saturation
5057
The magnetic saturation characteristic of the motor is high so that an excessively
large current could flow at the discrimination time of the magnetic pole position. It
is dangerous.

Decrease the P87 setting.
Error in tuning
results
5059
An interphase voltage unbalance or output phase loss has been detected during
tuning. Or tuning has resulted in an abnormally high or low value due to the output
circuit opened.

Check that there is no abnormality in the inverter's output (secondary) circuit.

If a magnetic contactor (MC) is inserted in the inverter's output (secondary)
circuit, check that it is closed.
to
5065