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Submitted by PatH on Fri, 11/05/2010 - 12:02

We are using a CDS-3310 to control a single axis servo motor. When the controller starts up it jerks the motor back at least a couple of mm. Otherwise it works fine.

The odd thing is that an earlier batch of controllers that we bought didn't do this. One controller from the earlier batch has a serial number of BH-00144, one from the later batch has a serial number BH-00676.

Any idea whats going on?

Comments 6

Galil_AndyH on 11/05/2010 - 13:04

Check the OF command (OF?), make sure it returns a 0. You can also have the controller power-up in the motor off state by installing the MO jumper.

Pawillson on 11/07/2010 - 07:29

Servo motor has temperature of over 100 degrees when operating. A couple have burned up. Circuit resistance seems to be ok. What do you think is the problem?

Galil_AndyH on 11/08/2010 - 08:15

Have you set TL and TK per your motor specifications? What is the inductance of your motor?

PatH on 11/17/2010 - 08:47

Andy,
FYI, FO returned 0.000. I ended up sticking in the MO jumper and initializing with a SH command.

Pawillson on 11/17/2010 - 16:06

Servo motor has temperature of over 100 degrees when operating. A couple have burned up. Circuit resistance seems to be ok. Help????

Galil_AndyH on 11/17/2010 - 17:24

Have you set TL and TK per your motor specifications? What is the inductance of your motor?

If you are unsure about these questions, e-mail the model number of your controller and a datasheet to of your motor to support@galilmc.com