TB Wood's WFC1000 Series, Инструкции по установке, эксплуатации и обслуживанию

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Parameter Units Level
53-FKNEE - Volts/Hertz Knee Frequency Hz L2
This parameter is used to set the frequency at which full voltage is delivered to the motor. Thereby, the
output volts/hertz ratio of the inverter is adjusted. It is adjustable in 0.01 Hz increments from 26 to 640 Hz. It
is factory set to the base frequency of U.S. made induction motors, 60 Hz.
53-FKNEE sets the point at which the motor goes from constant torque to constant power operation. 32-
FMAX determines the maximum operating frequency of the drive.
Almost any V/Hz profile can be generated using the WFC HT inverter. Consult the factory with your special
requirements.
54-SKBND - Skip Frequency Hysteresis Band Hz L2
This parameter sets the range of frequencies (above and below) associated with each of the skip
frequencies. Skip bands are used to avoid mechanical resonances in a drive system. The deviation is
adjustable in 0.01 Hz increments from 0.20 to 20.00 Hz. The factory setting is 1.00 Hz equating to an overall
2 Hz band.
55-SK1 - Skip Frequency #1 Hz L2
56-SK2 - Skip Frequency #2 Hz L2
57-SK3 - Skip Frequency #3 Hz L2
58-SK4 - Skip Frequency #4 Hz L2
These four (4) parameters set the center frequency of the skip bands over which normal operation will not be
allowed. The inverter will ramp through these frequencies, but not settle on them. Each is adjustable in 0.01
Hz. increments from 0.00 to 400.00 Hz.
59-MVOLT - Rated Motor Voltage V L2
59-MVOLT is a parameter active in the 7.5 thru 75 HP models that allows the user to precisely calibrate the
inverter to the motor being operated by it.
This parameter sets the voltage that the inverter delivers to the motor terminals at the setting of 53-FKNEE.
Therefore, it is possible to power the WFC
HT from 230 VAC and deliver 208 VAC to the motor at 60 Hz,
precisely matching the motor's design limits.
WFC2000 series drives are calibrated from the factory for 230, with valid settings in the range of 185 to 240.
WFC4000 series drives are set for 460, with valid settings between 370 and 480.
5B-IMAG - Magnetizing Current Level
This parameter tunes the Vector Control scheme to match motor design. By adjusting this parameter, the
inverter-motor combination can be optimized for ideal performance. This parameter becomes active when
parameter 51-VSEL is set to a Data Code of 6.
The WFC HT has an Auto-tune function that will measure the ‘no-load’ currents and automatically set
5B-IMAG. This occurs after 51-VSEL is set to a Data Code of 6. See Section 3.9 for Auto-tune procedure.
Although normally not required, fine-tune adjustments can be made to the parameter after the Auto-tune
procedure is completed.
The value of 5B-IMAG is adjustable in a range of 15-85% with a model dependent factory setting.
Adjustments to the setting can be made using the following formula:
5B-IMAG = measured no load current X 100
IRAT
61-LTLF - Preset Load Torque Limit Forward % L2
62-LTLR - Preset Load Torque Limit Reverse % L2
These parameters work in conjunction with 27-TLSEL to set the level at which the inverter goes into torque
limit in the forward and reverse motoring modes. When these limits are exceeded, the motor is decelerated
at a rate determined by 46-DECTL settling in at the value programmed at 39-FTL. Each is adjustable in 1%
increments from 5 to 150% of drive rating.
If 39-FTL is set to a value greater than 32-FMAX, torque limiting will be disabled.
63-RTLF - Preset Regenerative Torque Limit Forward % L2
64-RTLR - Preset Regenerative Torque Limit Reverse % L2
These parameters work in conjunction with 27-TLSEL to set the level at which the inverter goes into torque
limit in the forward and reverse regenerative modes. When these limits are exceeded, the motor is
accelerated at a rate determined by 46-DECTL toward 32-FMAX. Each is adjustable in 1% increments from
5 to 110% of drive rating.
If 39-FTL is set to a value greater than 32-FMAX, torque limiting will be disabled.
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