AC355 With Resistance
IM working on press block machine and am using acs355 vfd for vibration motor with Resistance for break and i chose these Resistance according to the manual in this application the acceleration time should be 1s and the deceleration should be the same but it seem that did not work i mean the Resistance did not warm so is there any parameter should i activate the Resistance ?
and the vfd make over load fault i put delta vfd and its work .. so what i miss ?
Most probably you didn't enable resistor braking function. Most probably you have an overvoltage fault.
Look for the following description in the user manual, page 409:
"To enable resistor braking, switch off the drive’s overvoltage control by setting parameter 2005 OVERVOLT CTRL to 0 ( DISABLE ). If parameter 2005 OVERVOLT CTRL is set to 2 ( EN WITH BRCH ) both braking chopper and overvoltage controller are enabled so that the braking chopper capability is used to its maximum and the overvoltage controller is activated above that."
Hope you calculated well the braking resistor's value and power, according to the manual.
Source: 3AUA0000066143 Rev D