SSINVERTER SSI700, User Manual, Page: 91 / 148

SSI700 User Manual Description of Function Codes
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• 0: Positive logic
The output terminal is valid when being connected with COM, and invalid when being
disconnected from COM.
• 1: Positive logic
The output terminal is invalid when being connected with COM, and valid when being
disconnected from COM.
Group P6: Start/Stop Control
Property
Default Setting Range Parameter Name
Function
Code
Group P6: Start/Stop Control
☆ 0
0: Direct start
1: Rotational speed tracking restart
2: Pre-excited start (asynchronous motor)
Start mode P6-00
• 0: Direct start
–– If the DC braking time is set to 0, the AC drive starts to run at the startup frequency.
–– If the DC braking time is not 0, the AC drive performs DC braking first and then starts
to run at the startup frequency. It is applicable to small-inertia load application where the
motor is likely to rotate at startup.
• 1: Rotational speed tracking restart
The AC drive judges the rotational speed and direction of the motor first and then starts at
the tracked frequency. Such smooth start has no impact on the rotating motor. It is
applicable to the restart upon instantaneous power failure of large-inertia load. To ensure
the performance of rotational speed tracking restart, set the motor parameters in group P1
correctly.
• 2: Pre-excited start (asynchronous motor)
It is valid only for asynchronous motor and used for building the magnetic field before the
motor runs. For pre-excited current and pre-excited time, see parameters of P6-05 and
P6-06.
–– If the pre-excited time is 0, the AC drive cancels pre-excitation and starts to run at
startup frequency.
–– If the pre-excited time is not 0, the AC drive pre-excites first before startup, improving
the dynamic response of the motor.
Property
Default Setting Range Parameter Name
Function
Code
Group P6: Start/Stop Control
☆
0.00 Hz 0.00–10.00 Hz Startup frequency P6-01
★ 0.0s 0.0–100.0s Startup frequency holdingtime P6-04
To ensure the motor torque at AC drive startup, set a proper startup frequency. In
addition, to build excitation when the motor starts up, the startup frequency must be held
for a certain period.
The startup frequency (P6-01) is not restricted by the frequency lower limit. If the set
target frequency is lower than the startup frequency, the AC drive will not start and stays
in the standby state.
During switchover between forward rotation and reverse rotation, the startup frequency
holding time is disabled. The holding time is not included in the acceleration time but in
the running time of simple PLC.