Stop At Lower-Limit Frequency Operation (Sleep Function - Toshiba VF-S15 Instruction Manual

Note 3: During shaft fixing control, the carrier frequency becomes the setting of whichever is lower parameter,
6.13 Stop at
f256 : Time limit for lower-limit frequency operation
f259 : Lower limit frequency reach time limit at start-up
f391 : Hysteresis for lower-limit frequency operation
 Function
If operation at the lower-limit frequency () is carried out for the time set with , the inverter will
automatically decelerate the motor to stop for the purpose of energy-saving. At that time, "" is
displayed (alternately) on the operation panel.
Stop by this function will be canceled if a frequency command value exceeds the lower-limit frequency
(ll) f391 (Hz), or if the operation command is OFF. This function will not work until the output
frequency reaches ll at the start of operation.
6
If the output frequency doesn't reach ll at the start of operation for malfunction of load, the inverter will
automatically stop after the time set with f259 elapses.
[Parameter setting]
f256
f259
f391
Output frequency [Hz]
ll+f391
ll
Forward/ reverse
Note: This function is valid when doing forward/reverse switching.
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function, motor shaft fixing control will be canceled.
f249 or f300.
lower-limit frequency operation (sleep function)
Title Function
Time limit for lower-limit frequency
operation
Lower limit frequency reach time limit at
start-up
Hysteresis for lower-limit frequency
operation


When starting operation, f256 function will not work until output frequency reaches ll.
When the output frequency exceeds ll, f259 function will be invalid until operation signal is OFF.
Adjustment range
0.0: Disabled
0.1 - 600.0 (s)
0.0: Disabled
0.1 - 600.0 (s)
0.0-ul (Hz)


F-48
E6581611
Default setting
0.0
0.0
0.2
Time[s]
ON
OFF