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Adjustment of the output torque (current) of the motor
(2) Setting of stall prevention operation level
(Pr. 22)
(3) Stall prevention operation signal output and output timing adjustment
(OL signal, Pr. 157)
When the output current exceeds the stall prevention operation level and stall prevention is activated, the stall prevention
operation signal (OL signal) turns ON for longer than 100ms. When the output current falls to or below the stall prevention
operation level, the output signal turns OFF.
Use
Pr. 157 OL signal output timer
to set whether the OL signal is output immediately or after a preset period of time.
This operation is also performed when the regeneration avoidance function or
(overvoltage stall) is executed.
For the OL signal, set "3 (positive logic) or 103 (negative logic)" in
Pr. 190
or
Pr. 192 (output terminal function selection)
and
assign the function to the output terminal.
For
Pr. 22
, set the output current level where the stall
prevention is activated. Set the output current level in ratio to
the rated inverter current (rated IPM motor current under IPM
motor control). Normally set 120% (initial value).
Stall prevention operation stops acceleration (makes
deceleration) during acceleration, makes deceleration during
constant speed, and stops deceleration (makes acceleration)
during deceleration.
When stall prevention operation is performed, the OL signal is
output.
NOTE
If an overload status lasts long, an inverter trip (e.g. electronic thermal O/L relay (E.THM)) may occur.
Pr. 157
Setting
Description
0
(initial value)
Output immediately.
0.1 to 25
Output after the set time (s) has elapsed.
9999
Not output.
NOTE
If the frequency has fallen to 1Hz by stall prevention operation and remains for 3s, a fault (E.OLT) appears to trip the
inverter output.
Changing the terminal assignment using
Pr. 190 and Pr. 192 (output terminal function selection)
may affect the other
functions. Set parameters after confirming the function of each terminal.
Stall prevention operation example
Pr. 22
OL
Output current
Acceleration
Time
Constant
speed
Deceleration
Output frequency
Overload state (OL operation)
OL output signal
Pr. 157
set time(s)
Содержание FR-F700PJ Series
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Страница 346: ...341 APPENDIX This chapter provides the APPENDIX of this product Always read the instructions before using the equipment ...