Cable

Accessory for signal transmission

Breaker

Device for electric shock prevention and protection against short-to-ground that may cause current leakage and fire. Select residual-current circuit breakers (RCCBs) that are applicable to VFDs and can restrict high-order harmonics, and of which the rated sensitive current for one VFD is larger than 30 mA.

Input reactor

Accessories used to improve the current adjustment coefficient on the input side of the VFD, and thus restrict high-order harmonic currents.

Input filter

Accessory that restricts the electromagnetic interference generated by the VFD and transmitted to the public grid through the power cable. Try to install the input filter near the input terminal side of the VFD.

or 

Brake unit or brake resistor

Accessories used to consume the regenerative energy of the motor to reduce the deceleration time.

VFDs of 037G/045P or lower only need to be configured with brake resistors, VFDs of 132G/160P or higher also need to be configured with brake units, and VFDs of 045G/055P–110G/132P support optional built-in brake units.

Output filter

Accessory used to restrict interference generated in the wiring area on the output side of the VFD. Try to install the output filter near the output terminal side of the VFD.

Output reactor

Accessory used to lengthen the valid transmission distance of the VFD, which effectively restrict the transient high voltage generated during the switch-on and switch-off of the IGBT module of the VFD.