Delta VFD-B Series User Manual

Appendix B Accessories|VFD-B-P Series
Revision April 2009, SW V1.00 B-11
1. Use the cable with shielding (double shielding is the best).
2. The shielding on both ends of the motor cable should be grounded with the minimum length
and maximum contact area.
3. Remove any paint on metal saddle for good ground contact with the plate and shielding.
Remove any paint on metal saddle for good ground contact with
the plate and shielding.
saddle
the plate with grounding
Saddle on both ends
Saddle on one end
The length of motor cable
When motor is driven by an AC motor drive of PWM type, the motor terminals will experience
surge voltages easily due to components conversion of AC motor drive and cable capacitance.
When the motor cable is very long (especially for the 460V series), surge voltages may reduce
insulation quality. To prevent this situation, please follow the rules below:

Delta VFD-B Series Specifications

General

Series	VFD-B
Cooling Method	Fan cooling
Overload Capacity	150% for 60 seconds
Braking Unit	Built-in
Control Mode	V/F control, Sensorless Vector Control
Communication	RS-485
Protection Features	Overvoltage, Undervoltage, Overcurrent, Overload, Overtemperature, Short Circuit
Operating Temperature	-10°C to +50°C
Storage Temperature	-20°C to +60°C
Humidity	90% RH (non-condensing)
Altitude	1000m (Derating required above 1000m)