Vacon 50X, Руководство пользователя

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67 vacon vacon 50x parameters
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Parameter 301, Minimum Frequency, configures the minimum frequency output of the
drive. This parameter governs the minimum frequency when operating from the keypad
or from an analog input. The preset speeds can be set lower than the minimum frequency
in parameter 301.
Parameter 302, the Maximum Frequency parameter, configures the maximum frequency output of the drive.
These parameters configure six preset speeds in addition to the normal reference speed
of the drive (as defined by parameters 201 (Input Mode) and 204 (Ref Select) and the max-
imum frequency of the drive (as set with parameter 302, Max Frequency). Thus, in effect,
you may choose to operate the drive at up to eight different speeds.
The eight speeds are selected by a combination of three digital inputs (PS1, PS2, PS3). A
wiring scheme for utilizing preset speeds is provided on page 24 along with a truth table
showing what combination of inputs results in the selection of which speeds.
Note that parameter Parameter 303 (Preset Freq1) also serves as the reference frequen-
cy for jogging.
This parameter sets the point where the drive no longer attempts to spin the motor. The
range of this parameter is 0.0–5.0 Hz. When the parameter is configured to a value of 0.0
Hz, the drive will operate with no Cut-off Frequency. If the function is enabled, the drive
will be able to ramp up through the cut-off frequency range, as in normal operation. If the
speed command falls below the cut-off frequency, the drive stops “gating” the outputs
and coasts down to zero speed. The keypad display will indicate Zero Speed, and the For-
ward or Reverse LED will be lit depending on the command. When the reference returns
to a value greater than the cut-off frequency, the drive will ramp from 0.0 Hz to the ref-
erence frequency.
The Ramp Select parameter configures when the alternate ramps of the drive will be ac-
tive and whether the drive ramps to stop, or coasts to stop. The following data values may
be assigned to this parameter:
301 Min Frequency Default = 0.0%
Range: 0.0–Max Freq
Level 1
302 Max Frequency Default: 50 Hz
Range: 0.0–400.0 Hz
Level 1
303 Preset Freq 1 (Jog Ref)
304 Preset Freq 2
305 Preset Freq 3
306 Preset Freq 4
307 Preset Freq 5
308 Preset Freq 6
Default: 5 Hz
Default: 10 Hz
Default: 20 Hz
Default: 30 Hz
Default: 40 Hz
Default: 50 Hz
Range: Min–Max Freq
Levels 1, 2 for 303
Level 2 for 304–308
309 Cut-Off Freq Default = 0.0 Hz
Range: 0.0–5.0 Hz
Level 2
401 Ramp Select Default: ART-DI
Range: Text string
Level 2
Parameter Value Type of Ramp Ramp Configured by:
ART-DI Ramp-to-Stop 402 (Accel Time 1) and 403 (Decel Time 1)