I get an alarm ( srvo--045 Sval1 hcal) every morning with or without leaving the unit running over night. after resetting the unit through power cycling up to 15 times, the alarm goes away for a 10 hour shift.
Needing some ideas as to where to look, any help would be greatly appreciated.
Here is the action items up to date:
A16B-2100-0114/02A servo amplifier has been replaced.
Axis motor has been replaced with new unit.
items below is what has been done from service manual.
From my manual :
(33)SRVO--045 SVAL1 HCAL alarm (Group : i Axis : j)
SRVO--148 SVAL1 HCAL alarm (Group : i Axis : j)
SRVO--149 SVAL1 HCAL alarm (Group : i Axis : j)
SRVO--150 SVAL1 IPMAL alarm (Group : i Axis : j) (Explanation) Abnormally high current flowed in the main circuit of the servo amplifier. The servo amplifier 7--segment LED indicates ”--”. At the same time, a red LED (HC1 to HC6) corresponding to the HCAL alarm above the 7--segment LED (For ARC Mate 100, ARC Mate 120, ARC Mate 100i, ARC Mate 120i, S--6, S--12, M--6i, M--16i, S--420i, S--500, S--700, M--710i, A--520i) or Servo amplifier one of ‘1’ ‘8’ ‘9’ ‘6’ of LED (For S--900, M--410i, M--500) lights.
(Action 1) Disconnect the motor power lines from the servo amplifier terminals, supply power, and see if the alarm occurs again. If the alarm occurs, replace the servo amplifier.
Can’t get the alarm to show up after 10+ power cycles
(Action 2) Disconnect the motor power lines from the servo
amplifier terminals, and check the insulation of each motor power line (U, V, or W) and the GND line. If there is a short--circuit, the motor, robot interconnection cable, or intra--robot cable is defective. Check them and replace them if necessary.
Mega checked wires found nothing to even be a little bit off. Disconnected wires when it was in the faulted state. Have moved axis all over 21 different locations and have checked wires.
(Action 3) Disconnect the motor power lines from the servo amplifier terminals, and measure the resistance between the U and V, V and W, and W and U with a ohmmeter with a very low resistance range. If the resistances at these three places are different from each other, the motor, robot interconnection cable, or intra--robot cable is defective. Check each item in
detail and replace it if necessary.
Thought we seen a little variation so replaced the motor with a new unit.
(Action 4) Replace the main CPU PC board.
Have not completed this action. Cost is almost not worth it.
I don't believe this is a cpu board issue since it goes away with power cycles.
Respectfully:
Kurt