E6581301
F-67
6
DC voltage
H
ON
Rush current
suppression relay
6.33.21 Motor thermal protection
H
HH
H
~ H
HH
H
: PTC thermal selection
For details, refer to Instruction Manual (E6581339) specified in Section 6.42.
6.33.22 Braking resistance overload curve
H
HH
H
: Braking resistance overload time
Refer to 5.19 for details.
6.33.23
Selection of a restar t con dition for t he mo tor s topped with a mec hanical brake
H
HH
H : Brake-equipped motor restart condition selection
!
• Function !
!!
!
With this function, the motor can be restarted immediately after a stop if it is operated at a frequency of more
than 10Hz (20Hz or less) and stopped with a mechanical brake.
Use this function only when a mechanical brake is used to stop the motor. Using this function for a motor
without a mechanical brake, the inverter may be tripped or fail.!
Title Function Adjustment range Default setting
H
Brake-equipped
motor restart
condition selection
: Default (no waiting time for frequencies of 10Hz and less)
: Conditional (no waiting time for frequencies of 20Hz and
less)

The timing chart in the figure below shows how the motor is operated and stopped with a mechanical brake.
By default, restart waiting time is set to prevent the inverter from b eing tripped because of the immediate restart o f
the motor which started coasting at a frequency of more than 10Hz and sto pped (when the ST function is assigned to
the S3 terminal, S3 signal is cut off).
This waiting time, however, is not necessary if a mechanical brake is used to s top the motor more reliably. When
using a mechanical brake to stop the motor, set this parameter H to to al low the motor to restart immediately
after a stop if it started coasting at a frequency of 20Hz or less and stop ped.
#
Ex.
$
When parameter H is set to .
%
!!
Starting signal
(S3 and F)
!
Mechanical brake
Output frequency [Hz]
0
20Hz
Time [s]!
[
Note1
]
10Hz
Starting waiting
time
!
Starting waiting
time
!
When assigning the ST function to the S3 terminal,
Set
H
to
(to cancel its factory default setting:
= ST always active), and
Set
H
to
(to assign the ST function to the S3 terminal).
Note 1: By default, the restart waiting time shown in the figure is set, and the restart of the motor is delayed by the
time indicated by the dashed line.
Note 2:
If the motor started coasting at a frequency of m ore than 20Hz, it will restart after the expiration of the waiting time.