Delta Electronics VFD007S23A Manual De Usuario

Error! Reference source not found. Error! Reference source not found.|VFD-S Series 

 

Revision August 2006, SE08, SW V2.61 

 C-7 

 

D. 

Gear reduction motor: 

The lubricating method of reduction gearbox and speed range for continuous operation 

will be different and depending on brand. The lubricating function for operating long time 

at low speed and for high-speed operation needs to be considered carefully. 

 

E. Synchronous 

motor: 

The rated current and starting current are higher than for standard motors. Please check 

before operation and choose the capacity of the AC motor drive carefully. When the AC 

motor drive operates more than one motor, please pay attention to starting and changing 

the motor. 

 

Pay attention to reduced lubrication when operating gear reduction motors, gearboxes, 

belts and chains, etc. over longer periods at low speeds. At high speeds of 50/60Hz and 

above, lifetime reducing noises and vibrations may occur. 

 

The torque characteristics of a motor operated by an AC motor drive and commercial 

mains power are different. 

Below you’ll find the torque-speed characteristics of a standard motor (4-pole, 15kW):