SRVO-136 Alarm

Have you checked your input power to controller and the output power of your transformer?

"The DC voltage (DC link voltage) of the main circuit power supply for the servo amplifier (α iSV) is abnormally low."

Is there a motor power lockout switch? Or, could be a bad leg of 3-phase power.

I'd check the Connections to the Servo amps. Looks like your missing the 24v so connection or fuse is what I check first.

The "SRVO–136 DCLVAL" alarm may not usually be written in this way, it should be written together with an alarm such as "SVAL1-IPMAL-DCLVAL-FSVAL". Along with it, it must be giving another "SRVO" malfunction. As an electronist, I can say that this is the type of malfunction that I am most annoyed with in a robot. It's very true that you look at your book and try to make the fault, but I choose to proceed by looking at what the LED indicator of the driver's card says first in all of these faults. I have never found that the transformer or DC voltage is problematic, or that the E-STOP card is the cause of this malfunction. Whenever I see a "DCLVAL" malfunction, the first thing I do first is to change the driver's card, otherwise you do it according to the order it says in your book, but you can't find any kind of malfunction, which makes me very tired. Because even if you do voltage monitoring with a multimeter, the driver's card is definitely tricking me.

Over the years i have had this error and several times the QF2 breaker behind the estop board was off. Take a look you never know.