Function For Crane/Hoist; Commercial Power/Inverter Switching - Toshiba TOSVERT VF-A7 Instruction Manual

If frequency 1
Gain2
If 
If frequency after acceleration
Gain2
If frequency after acceleration
Gain2
c) Drooping speed
Drooping speed = base frequency
Note) For this calculation, assume the base frequency to be 100 Hz if it is higher than 100 [Hz].

6.15 Function for crane/hoist














6.16 Commercial power/inverter switching






Function
The function switches between the commercial power and the inverter operation witho
ut stopping the motor in case of tripping or by sending a signal, and also to transmit
switching signals to an external sequence (MC, etc).
frequency after acceleration

Drooping gain 
100

0
Drooping gain

Light-load high-speed operation
Light-load high-speed operation switching lower limit frequency
Light-load high-speed operation load waiting time
Light-load high-speed operation load detection time
Light-load high-speed operation heavy load detection time
Switching load torque current during forward run
Heavy load torque during acceleration in forward direction
Heavy load torque during fixed speed in forward direction
Switching load torque current during reverse run
Heavy load torque during acceleration in reverse direction
Heavy load torque during fixed speed in reverse direction
Automatic light-load high-speed operation frequency
Output signal selection of commercial power/inverter switching
Commercial power/inverter switching frequency
Inverter side switching waiting time
Commercial power side switching waiting time
Commercial power switching frequency holding time
( freq. after acceleration
( freq.2

frequency 1

frequency 1

/ 100
Note Gain1 Gain2

F-32
frequency 2

freq.1  )
freq.1  )