Inverter Drive

ZCA25M：Motor Capacity 60W-90W

• ・A 200 V class motor can be driven from the inverter unless it is operated at low frequency or a frequency of 60 Hz or higher. In addition, 400 V class motor cannot be driven from the inverter.

ZCA35M・ZCA45M：Motor Capacity 0.2kW・0.4kW・0.75kW

• ・The maximum operating frequency is 120 Hz, and the low Hz range (low frequency) should be used within the allowable range of the inverter. The 0.75 kW motor type is also capable of constant torque operation between 6 Hz and 60 Hz using a standard motor.
• ・At high speeds, torque decreases inversely in proportion to the rotation speed because the power becomes constant at kW. In addition, as the rotation speed increases, motor noise, motor fan noise, reduction gear noise, and vibrations also increase.
• ・At low speeds, the operating and cooling efficiency of the motor decreases, so temperature raises. It required to limit the torque to use.

The output torque (%) is 100% at the motor’s rated frequency of 60 Hz.
(Base frequency is set to 60 Hz. )

With a 0.2 Kw or 0.4 kW motor

The output torque (%) is 100% at the motor’s rated frequency of 60 Hz.
(Base frequency is set to 60 Hz. )

With a 0.75 kW motor

Notes on braking

• ・The brake circuit must be operated individually due to its required power supply. For details, please refer to "Wiring for motor with brake".
• ・Standard products are shipped with the brake lead wire screwed together with the motor lead wire. The brake lead wire should be unscrewed and connected individually.
• ・Perform braking at 60 Hz (1800 r/min) or less speed. Braking at high speed range over 60 Hz may cause mechanical damages, and heating and wear on lining. Make sure to operate at 60 Hz or lower frequency.

Using a 400 V class motor for the inverter drive

• ・Devices with a 400 V class motor are available for made to order. With a 400 V class motor, dielectric breakdown may occur due to high voltage surges (microsurges) generated from the inverter switching. As a result, measures against microsurges are generally required for such motors. Tsubaki 400 V class of motor comes standard with micro surge protection. However, with levels in excess of 1250 V, a suppression filter or reactor should be installed on the inverter side.

Other points to note

• ・Compared with standard power supplies, the inverter drive is greater increases in temperature, noise, and vibration should be expected.
• ・To protect the motor from overheating, use an electronic thermal mechanism configured to general-purpose motor characteristics, or use a thermal relay or other device between the inverter and the motor.
• ・When using at a base frequency of 50 Hz, set the output torque to 0.8 times that in the chart above. (With a 0.2 kW or 0.4 kW motor only )
• ・0.2 kW and 0.4 kW inverter motors are also available.