Dear All
I have a Parker brand SBC Servo motor 335VAC 0.62kw which is controlled by a servo motor drive. The motor consist of winding, thermister, brake and a Resolver for feed back to drive. When I started the motor with servo drive, it draw unbalance current and motor shaft vibrated. I checked the winding and found ok. Then I concluded that problem was in the Resolver. I tested the drive by connected another servo motor and found ok. I tried to test the motor without Resolver connected but when I disconnected the resolver, drive went in to fault. Is it possible to test the Servo motor by Inverter instead of Servomotor Drive?
Testing Of Servo Motor By Inverter.
Started by AB2005, Mar 17 2008 05:09 AM
2 replies to this topic
#1
AB2005
-
- Validating
-
- 411 posts
Senior Member
Posted 17 March 2008 - 05:09 AM
"Don't assume any thing, always check/ask and clear yourself".
#2
VST
-
- Full Member
-
- 16 posts
Intermediate Member
Posted 02 July 2008 - 03:05 AM
QUOTE (AB2005 @ Mar 17 2008, 10:39 AM) <{POST_SNAPBACK}>
Dear All
I have a Parker brand SBC Servo motor 335VAC 0.62kw which is controlled by a servo motor drive. The motor consist of winding, thermister, brake and a Resolver for feed back to drive. When I started the motor with servo drive, it draw unbalance current and motor shaft vibrated. I checked the winding and found ok. Then I concluded that problem was in the Resolver. I tested the drive by connected another servo motor and found ok. I tried to test the motor without Resolver connected but when I disconnected the resolver, drive went in to fault. Is it possible to test the Servo motor by Inverter instead of Servomotor Drive?
I have a Parker brand SBC Servo motor 335VAC 0.62kw which is controlled by a servo motor drive. The motor consist of winding, thermister, brake and a Resolver for feed back to drive. When I started the motor with servo drive, it draw unbalance current and motor shaft vibrated. I checked the winding and found ok. Then I concluded that problem was in the Resolver. I tested the drive by connected another servo motor and found ok. I tried to test the motor without Resolver connected but when I disconnected the resolver, drive went in to fault. Is it possible to test the Servo motor by Inverter instead of Servomotor Drive?
Output stages of all inverters are almost same no matter whether they are servo or or M/C or v/f. The difference is onl;y in the control technique . And as a servo motor and drive bothe are made for close loop application . being differnt in construction it is difficult to run the Servo motor with Normal inveretr. And only Jref and Marke can help you out.
#3
mariomaggi
-
- Full Member
-
- 230 posts
Senior Member
- Gender:Male
- Location:Milan, Italy
- Interests:electric vehicles http://www.evlist.it , 3-phase AC sources to test PV inverters, high-power AC/DC power supplies up to 1500 VDC to test photovoltaic inverters, bidirectional AC/DC power supplies to test and simulate big batteries, infrared windows for thermography, renewable energies, special electric motors, special inverters, energy savings, power quality
Posted 06 July 2008 - 08:02 PM
AB2005,
a brushless motor is similar to a syncron motor. In some cases - if your inverter is able to drive a synchron motor - you can test is using a variable frequency inverter. You have only to take care to avoid situation in which demagnetization is possible.
Regards
Mario
a brushless motor is similar to a syncron motor. In some cases - if your inverter is able to drive a synchron motor - you can test is using a variable frequency inverter. You have only to take care to avoid situation in which demagnetization is possible.
Regards
Mario
Mario Maggi - Italy - http://www.evlist.it - https://www.axu.it
0 user(s) are reading this topic
0 members, 0 guests, 0 anonymous users
