Constant Speed Run With Acc/Dec Suspended (Dwell Operation) - Toshiba TOSVERT VF-AS3 Instruction Manual

6. 19 Constant speed run with Acc/Dec
<F349: Dwell operation>
<F350: Acc suspended frequency>
<F351: Acc suspended time>
<F352: Dec suspended frequency>
<F353: Dec suspended time>
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■ Function
This function suspends acceleration/deceleration temporarily and let the inverter run in constant
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speed according to the brake delay during run/stop for transportation of heavy load. This will prevent
occurrence of overcurrent at startup or slippage when stopping by adjusting the timing with the
brake.
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There are two ways to set dwell operation: automatic stop by setting the stop frequency and stop
time and stop by using signals to the input terminal.
■ Parameter setting
Title
9
F349
F350
F351
F352
F353
■ Setting method
Select whether to automatically suspend acceleration/deceleration by parameter settings or by
signal input to the input terminal. This is set with <F349: Dwell operation>.
• When <F349> is set to "1", you must also set parameters <F350: Acc suspended frequency>
through <F353: Dec suspended time>.
<F350: Acc suspended frequency> must be set to a value over <F240: Start frequency>.
<F352: Dec suspended frequency> must be set to a value over <F243: End frequency>.
When the frequency command value is the same as values set for <F350> and <F352> settings,
dwell operation will not be enabled.
• When <F349> is set to "2", you must also assign function numbers "60", "61" (dwell operation) to
the unused input terminal.
6. [Advanced] How to use parameters
suspended (dwell operation)
Parameter name
Dwell operation
Acc suspended
frequency
Acc suspended time
Dec suspended
frequency
Dec suspended time
F349 : Dwell operation
0: Disabled
1: F350-F353 setting
2: Terminal input
Adjustment range
0: Disabled
1: F350-F353 setting
2: Terminal input
0.0 - FH
0.0 - 10.0
0.0 - FH
0.0 - 10.0
6-74
E6582062
STOP 0.0Hz
13:21
Unit Default setting
0
Hz 0.0
s 0.0
Hz 0.0
s 0.0