Installation manual

Detected Fault Management Parameters
S1A53838 09/2011 133
Nuisance Overvoltage And Input Phase Detected Fault Avoidance
Parameters F481 to F483 can be used to avoid nuisance overvoltage and input phase faults caused by:
z High input impedance: line reactor
z Low input impedance: high kVA distribution network
z Voltage instability: generator power source
If nuisance faults occur, increase the value of parameter F481. If increasing the value of F481 over 1000
does not remove nuisance faults, increase the values of parameters F482 and F483 as needed.
When the using machine has specific resonance, the following phenomena are happened:
z the machine occurs vibration,
z unusual noise of machine or peripheral.
If these phenomena are occurred, the following parameters should be adjusted:
z at first, set [Pwr supply adj. gain] (F484) to 0.5,
z next, set F484 as another value when no effect by setting F484 to 0.5,
z if [Motor rated freq.] (uL) = 50 Hz, set F481 to the following value 531,
z if uL= 60 Hz, set F481 to the following value 442.
Note: F481 and F483 are invalid when F484 has a value excluding 0.0.
Code Name / Description Factory setting
F634 [Amb. temp. alarm]
Ambient Temperature For drive Service Alarm 3
1
2
3
4
5
6
[- 10 to 10 °C]
[11 to 20 °C]
[21 to 30 °C]
[31 to 40 °C]
[41 to 50 °C]
[51 to 60 °C]
The drive can be programmed to signal a service alarm using output relay functions 44 or 45 (see page 102
). The status of the
service alarm can be displayed on the embedded display terminal (see page 21
).
At initial start-up, set parameter F634 to the drive’s average ambient operating temperature. Setting F634 to the highest
annual temperature or changing the value after drive operation has begun may result in an early drive service alarm.
Code Name / Description Adjustment range Factory
setting
F481 [In noise comp. filter]
Line noise compensation filter 0 to 9999 μs0 μs
F482 [In noise Inhibit filter]
Line noise Inhibitor filter 0 to 9999 μs 442 μs
F483 [In noise inhibit gain]
Line noise Inhibitor gain 0 to 300 % 100%
F484 [Pwr supply adj. gain]
Power supply adjustment gain 0.0 to 2.0 s 0.0