Toshiba Toshiba Schneider Inverter Corporation

Mixers [Chemical machines]

 Notices regarding the use of inverter drives

- Starting torque
Mixers often require high starting torque.
If mixers need over 200% starting torque, you have to increase the inverter capacity.

- Avoiding "mixing dust"
Usually, mixers are used in a dusty environment.
If this is the case, you have to install the inverter in a cabinet, or please select the IP54 model of VFS11.

- Maximum motor speed
The maximum motor speed depends on the motor specifications.
Please confirm the specifications of the manufacturer of your motor.
The specifications of TOSHIBA motors are as follows:

Capacity [kW] Allowable frequency [Hz]
2 poles 4 poles 6 poles
0.4 60 120 120
7.5 90
11 90
45 60

- Electromagnetic noise
The inverter is generating "electromagnetic noise".
If there are some high accuracy sensors or other sensitive equipment near the inverter drive, the inverter's noise may cause some trouble or a malfunction.
Electromagnetic noise can be avoided by installing an external noise filter or using a different wiring method.

- Harmonics
The inverter is generating "harmonics".
These harmonics sometimes cause a malfunction in other control equipment that is connected to the same power source.
Harmonics can be avoided by installing an external "reactor".

To decrease "harmonics", we recommend to install DC reactors in all our inverter models.
(NOTE: 100V input models require AC reactors.)

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