4-2 Function Mode Stop Selection •You can set whether the Inverter decelerates to a stop for the set deceleration time or goes into free-run status, when the STOP command is input from the Digital Operator or the control circuit terminal block. •If the RUN command is input again during free running, the Inverter restarts according to free-run stop selection b088. (Refer to "Free-run Stop Selection" (page 4-68).) 4 Functions Free-run Stop Selection •Activating the free-run stop (FRS) function shuts off the Inverter output, letting the motor go into free-run status. •Helps stop the motor using a mechanical brake such as an electromagnetic one.
Note that an overcurrent trip may occur if the mechanical brake forces the motor to stop during Inverter output. •Allocate 11 (FRS) to any of multi-function inputs 1 to 8 (C001 to C008). •Performs a free-run stop (FRS) while the FRS terminal is turned on. When the FRS terminal is turned off, the motor restarts after the retry wait time (b003) elapses. However, if RUN command selection A002 is set to "02" (Digital Operator), the Inverter does not restart. To restart the Inverter, input the RUN command. 4-68 Parameter No. Function name Data Default setting Unit b091 Stop selection 00: Deceleration → Stop 01: Free-run stop 00 b088 Free-run stop selection 00: 0-Hz start 01:
Frequency matching start 02: Frequency pull-in restart 00 b003 Retry wait time 0.3 to 100. 0.00 Hz b007 Frequency matching lower limit frequency setting 0.00 to 400.0 1.0 s Related functions F003, F203, F303 Parameter No. Function name Data Default setting Unit b088 Free-run stop selection 00: 0-Hz start (example 1) 01: Frequency matching start (example 2) 02: Frequency pull-in restart (example 3) 00 b003 Retry wait time 0.3 to 100: Time before restart 1.0 s b007 Frequency matching lower limit frequency setting 0.00 to 400.0: Set a frequency matching level.
0.00 Hz b028 Frequency pull-in restart level 0.20 × Rated current to 2.00 × Rated current Rated current A b029 Frequency pull-in restart parameter 0.10 to 30.00 0.50 s b030 Starting frequency at frequency pull-in restart 00: Frequency at interruption 01: Max. frequency 02: Set frequency 00