[samu]

control:0M-D
i got a low voltage servo alarm on X and Y at power on. I measure the input voltage from the power supply: 0VDC. Turn off and on, evrything is ok. It was already happen in the past but now it's almost at each power on. What could it be?

[samu]

ok, more details, dc output of the power supply is 0 because line in is 0 too. There is a contactor that must be energized to bring the line to power supply and it's activated via CX3 cable(this is from the power supply). What exactly is CX3. Wath could cause a faulty CX3 signal?

[ITT-Student]

What model P.S. is it that you are checking?

[ITT-Student]

How many axis's do you have?

[samu]

A06B-6087-H126

[ITT-Student]

when this happens what is on the led display of the p.s.? Any alarms on the P.S. itself?

[samu]

no alarm on p.s. it's just not ready

[ITT-Student]

Checking for what keeps the mcc (contactor) from comming on:

1. The emergency stop state has not been released(ensure a secure connection)

2. A terminating connector has not been attached( check connector K9 hfor the svm or spm has been attached at the end of the chain)

3. The MCC driving relay is defective!! (Check that a circuit between pins 1 and 3 of connector CX4 are closed and opened).

4. Make sure you have secure connections on the contactor itself.

Of course do these checks when the problem occurs.

[rgdcncmachines]

control:0M-D
i got a low voltage servo alarm on X and Y at power on. I measure the input voltage from the power supply: 0VDC. Turn off and on, evrything is ok. It was already happen in the past but now it's almost at each power on. What could it be?

Samu i have the same problem with my fanuc OMD . When i do turn on appears this alarm 444. In my DGN says LOW VOLTAGE but i dont know where is the low voltage!!! Please help meeee !!!

Enviado desde mi GT-I9300 usando Tapatalk

[rgdcncmachines]

I have 4th axis

Enviado desde mi GT-I9300 usando Tapatalk

[guhl]

Samu i have the same problem with my fanuc OMD . When i do turn on appears this alarm 444. In my DGN says LOW VOLTAGE but i dont know where is the low voltage!!! Please help meeee !!!

Enviado desde mi GT-I9300 usando Tapatalk

could you measure your voltage? I faced with tht problem recently on my A06B-6047 drive, the problem was in measuring circuit, I reinstalled PCB with comparator, wich monitors the DC voltage and all ok

[rgdcncmachines]

I dont know whts mean with this alarm. Low voltage in DC or AC?


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[guhl]

DC
it easier to measure DC, considering that DC depends on incoming AC

sent from Nokia 3310 )