B&R 8I84T200037.01P-1, Руководство пользователя

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Programming guidelines
ACOPOSinverter P84 User's Manual 2.10 161
Drive parameters (continued)
Code Name/Description Setting range Factory settings
OFI [Sine-wave filter] [No] (nO)
nO [No] (nO) : No sine-wave filter
YES
[Yes]
(YES) : Use of a sine-wave filter to limit overvoltages of the motor and reduce leakage current to ground.
Der [Sine-wave filter] (OFI) is forced to [No] (nO) with the following types of inverters: 8I84T200037.01P-1 and 8I84T400075.01P-1.
Note:
The settings of [Current limiting] (CLI) and [2nd current limit] (CL2) must be performed after this configuration of
[Sine-wave filter] (OFI) = [Yes] (YES) and [Motor control type] (Ctt) = [V/f Reg 2P] (UF2) or [V/f Reg 5P] (UF5) as this configuration
results in a factory setting with reduced current limiting (1.36 In) for certain models.
Caution!
If [sine-wave filter] (OFI) = [Yes] (YES) , [Motor control type] (Ctt) ( see "Drive parameters (Ctt)" on page 153 ) must be
[V/f Reg 2P] (UF2) , [V/f Reg 5P] (UF5) , (or for 8I84T2*****.01P-1 and 75 KW 8I84T4*****.01P-1 [SVC U] (UUC) only up to 45 kW) and
[Max. output freq.] (tFr) is not permitted to exceed100 Hz.
Failure to follow this instruction can result in equipment damage.
SFr [Switching freq.]
1)
Depending on the size Depending on the size
Switching frequency setting.
Setting range:
Can vary between 1 and 16 kHz, but the minimum and maximum values and the default value, depending the inverter type, the
rated current (power and voltage) and the configuration of the parameter [Sine-wave filter] (OFI) and [Motor surge limit] (SVL) ( see "Drive (nrd
- SOP)" on page 161 ) are restricted.
If the value is lower than 2 kHz, then [current limit] (CLI) and [2nd current limit] (CL2) , see "Setting parameters (SFr - CL2)" on page 144
are limited to 1.36 In.
Adjustment with running inverter:
•
If the initial value is under 2 kHz, it can not be increased over 1.9 kHz during operation.
•
If the start value is greater than or equal to 2 kHz, during operation a minimum value of 2 kHz should be maintained.
Adaptation with stopped inverter: No restrictions.
Note:
In the event of excessive temperature rise, the inverter will automatically reduce the switching frequency and reset it once the
temperature returns to normal.
Note:
If [Motor control type] (Ctt) ( see "Drive parameters (Ctt)" on page 153 ) is set to [FVC] (FUC) , it is not recommended to set the
switching frequency to a value below 2 kHz (to avoid unstable speeds).
Caution!
On inverters of the models 8I84T400075.01P-1 to 8I84T400400.01P-1, if the RFI filters are disconnected (operation on an IT system),
the inverter's switching frequency is not permitted to exceed 4 kHz.
Failure to follow this instruction can result in equipment damage.
CLI [CURRENT LIMIT.]
1)
0 to 1.65 In
2)
1.5 In
2)
Used to limit the motor current.
The adjustment range is limited to 1.36 In if [Switch frequency] (SFr) is under 2 kHz.
Note:
If the setting is less than 0.25 in, the inverter can remain in error mode [output phase loss] (OPF) , if this has been enabled, see
"THERM. MOTOR PROTECTION (tHt) and LOSS OF MOTOR PHASE (OPL)" on page 292 ). If it is below the no-load current of
the motor, the limitation has no effect.
Caution!
Make sure that the motor is designed to this current, since these are susceptible to a demagnetization.
Failure to follow this instruction can result in equipment damage.
1) This parameter can also be accessed via the [SETTINGS] (SEt-) menu.
2) In is the same as the rated current specified in the installation instructions and on the nameplate of the inverter.
Parameter that can be modified during operation or when stopped.