Fanuc R-30iA SRVO-043 and SRVO-105

SRVO--043 SVAL1 DCAL alarm

(Action 1) This alarm may occur if the axis is subjected to frequent
acceleration/deceleration or if the axis is vertical and
generates a large amount of regenerative energy. If this
alarm has occurred, relax the service conditions.
(Action 2) Check fuse FS3 in the servo amplifier. If it has blown,
remove the cause, and replace the fuse. One of the
probable causes of a blown fuse is a ground fault in
the servo amplifier for auxiliary axis.
(Action 3) Make sure that the servo amplifier CRR63A,
CRR63B and CRR63C are connected tightly, then
detach the cable from CRR63A, CRR63B and
CRR63C connector on the emergency stop board, and
check for continuity between pins 1 and 2 of the
cable--end connector. If there is no continuity between
the pins, replace the regenerative resistance.
(Action 4) Make sure that the servo amplifier CRR45A,
CRR45B and CRR45C are connected tightly then
detach the cables from CRR45A, CRR45B and
CRR45C on the servo amplifier and check the
resistance between pins 1 and 2 of each cable end
connector. If the resistance is not 9--16Ω, replace the
regenerative resistor.
(Action 5) Replace the servo amplifier.

SRVO--105 SVAL1 Door open or E--stop
(Explanation) The cabinet door is open.
(Action 1) When the door is open, close it. If no door switch is
mounted, go to [Action 3].
(Action 2) Check the door switch and door switch connection
cable. If the switch or cable is faulty, replace it.
(Action 3) Check that the CRM70, CRM71, and CRM72
connectors on the E--STOP unit are connected
securely.
(Action 4) This alarm is also issued if software cannot determine
the cause of disconnection of the emergency stop line.
check whether the emergency stop line is normal.
(Action 5) Replace the servo amplifier.

For something to happen simultaneously on two robots at the same time, it is probably either an external cause that affects them both, or some form of communication between them that has gone wrong. We had a similar issue caused by ethernet traffic. Your sounds like it is related to the E-Stop circuit. Since it is time based, maybe something to do with the servo disconnect or brakes causing a short?

I know this is an old thread, but were you able to find out what the issue was ? I am currently having the exact same problem. Thanks!

I had this problem trouble me a long time in the past. Check the following:

1) clean the air ventilation housing and fan located on the base of the controller. Use pressurized air. Mine was clogged.
2) if you measured continuity of the cables and resistance and you found them under the recommended numbers chances are the system simply can't dissipate the heat generated by the amount of regenerative energy the motor returns. Our robot for example that had this issue has an increased center of gravity because it is based on high ground and axis 2 had a lot of dive moves near the speed limit. Also the resistance measured at the resistor was somewhat lower than FANUC specifications cause its an old system.

Problem went away with some fine-tuning of the program speeds.

Hello! I had the same problema with a R-J3 controller. But in my case the alarm appears just after i pressing the Dead man. Also in my case the teach pendant screen remained blank while pressing the dead man. Immediately after I released Dead man the alarm appeared.

The solution was only change the cable from the teach pendant to the controller for a spare

To solve the SRVO - 043 SVAL1 DCAL alarm firstable fistable! check that the fuse of the servoamplifier is alright

Just happen to me.

My vent was clogged too!

Now up and running!