Quote from: dv1976 on September 04, 2015, 04:24:AM
Using a multimeter, check for AC voltage between any two of the three phase lines and note your findings (240V,480V, etc) Now make the same voltage test from any one line to ground or the neutral conductor if you have one. If the voltage is considerably lower than your initial test, then it is a Y configuration.

That's good info, I actually never knew that I have worked with electricity for what seems like forever. Thanks for the simple Delta or Y Voltage Test!

I have some experience with these servo amplifiers. Here are bits of info for amplifier setup.

The amplifiers should be checked in an open loop condition by disconnecting the command signal wires COM+ and COM- . You should be able to adjust the balance pot to elimate motor drift or at least get the shaft close to being stationary. Some drifting is OK if you can't stabilize it completely.

By connecting a 9v battery (or as low as a 5v DC supply) to the command signal in series with a push button or an electronic recycler (repeat cycle timer), you can initiate motion. You should only do this with no load attached to the motor shaft because you are going to initiate motion.

Be sure to use an ungrounded plug on the oscilloscope!!! With the scope connected from VELOCITY to GND you can monitor for overshoot. I learned this lesson the hard way because I created some kind of ground loop which skewed by waveform and gave me confusing results so be careful here.

This test point will display the actual velocity of the motion you have initiated.  Any overshoot that shows up can be adjust to a minimum using the LEAD pot.

The scope connected from CURRENT to GND will display the current draw at the instant of the motion and this is also indicated by the bi-color current LED. Red means you working it hard.

The SIGNAL pot will adjust the overall speed of the motor and can be observed using a handheld tachometer while a constant movement is initiated. I was insructed by tech support years ago to leave the signal pot at the midpoint (12:00) if we ever replace an amplifier.

The setup and start up procedure are in the manual are good procedures and should be followed closely.

I have two of these still in service. These are the approximate locations of the pots on my amplifier:

TOP Motor: bal 7:00; cur 2:00; resp 2:00; sig 9:00; lead 5:00
BOTTOM Motor:     bal 2:00; cur 2:00; resp 2:00; sig 9:00; lead 5:00

Maybe this info can help you out too.

Hello,
I am getting a FIELD OVER I alarm on a Parker 590+ drive. I checked the field current with a meter and it seems to be in range so I am concerned that the drive is complaining about the current when it shouldn't be. Is there a troubleshooting guide  I can follow? or does anyone have any 590+ troubleshooting procedure? Thanks!

QUESTION: DC Drive Feedback Selection

My question is how do you determine the best DC drive feedback for your application. Is armature feedback good enough for most variable speed applications? I'm not positioning anything, I am driving a narrow strip of metal through a punching machine at various speeds.

The Allen Bradley PLC product line gets my vote. Once you've taken a crash course in RSLOGIX programming, you are good to go.

Are Semiconductor fuses polarized? I know it may be a stupid question but I recently purchased Bussman semiconductor fuses for a drive that we are having problems with. I notice the diagram on the side of the fuse that looks like a resistor and diode. Nothing else on the fuse indicates any kind of polarity, but i though i would just ask anyway.

Thanks!
Al