Help - I have some servo amps out of an R-J3 control, that I can put in one robot cell and I get an immediate SRVO-156 current error on power up. But I take these same amps and put in another stand alone robot , and I get no errors and the robot runs just fine. I can also take some other servo amps and put them in the same robot cell that was giving the SRVO-156 error, and get that robot in the cell to boot up fine with no errors. HELP please, any ideas would be very much appreciated!!
R-J3 SRVO-156 Error on power up - get on one robot and not on another
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dpfouts -
April 17, 2013 at 6:08 PM -
Thread is marked as Resolved.
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Here's what the manual says:
SRVO-156 SVAL1 IPMAL alarm (Group : i Axis : j) (Explanation) Abnormally high current flowed through the main circuit of the servo amplifier.
(Action 1) Detach the motor power lines from the respective terminals on the servo amplifier, and switch on the power, then check to see if the alarm occurs again. If the alarm occurs, replace the servo amplifier.
(Action 2) Detach the motor power lines from the respective terminals on the servo amplifier, and check for isolation between each motor power line (U, V, or W) and a ground potential (GND). If a motor power line is short-circuited to a ground, the motor, robot connection cable, or robot internal cable is likely to be defective. Check each of them, and replace it if necessary.
(Action 3) Detach the motor power lines from the respective terminals on the servo amplifier, and check the resistance between each motor power line pair (U and V, V and W, or W and U) using a meter that is capable of measuring a very low resistance. If the measured three resistances are different, the motor, robot connection cable, or robot internal cable is likely be defective. Check each of them, and replace it if necessaryYou can skip action 1, because your amp is OK.
Hope this helps