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Computer Numerical Control
Mitsubishi

'S01 Servo Alarm:PR'

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S01 Servo Alarm:PR

• Page 1 (Original Post) •

RRL (72.128.219.159) -

Asking for expert advice for S01 Servo Alarm:PR fault with Mitsubishi Medlas 520LR CNC Control

Comment #1 Marcus Clayton from Melbourne Australia (Contact Member) -

S01 will have a code (up to 4 digits) and then an axis after it.
example S01 003A X means overcurrent alarm on X axis.
Check servo modules in cabinet and they will be flashing alarms. One will have 003A, the fault, and others will flash E7 which means fault on another axis.
If you can identify the alarm you can have a good guide to the fault. In the above case the most common cause is a bad ballscrew bearing or swarf build up causing an overload in the motor

Comment #2 rrl from Midwest (Contact Member) -

Marcus thank you for the information.
The full servo alarm code is: S01 Servo Alarm: PR 0032S1 and it occurred during a Z axis drilling operation.
Fault codes on the servo and spindle amplifiers are as follows:
Axis Amplifiers:
Flashing F2 E7 and F1 E7
Spindle amplifier:
F3-32
Inverter Power Supply:
6
Is there a list of these faults available on the internet to find out more information.
Thanks and how is the weather in the "Down Under"

Comment #3 Jokin (125.161.12.177) -

Hello ,
Its mean your spindle amplifier is out of service, please exchange with anew one or repair it with Power Module.

Comment #4 cynthia madison (216.171.183.162) - Tue Feb 2 12:12:25 2010

"machine repairperson"

getting spindle amplifier alarm on MITSUBISHI CNC SHAVING MACHINE FC30CNC(4-AXIS)(FANUC 21-MB)- have replaced headstock, tailstock, and cutter head support bearings-still--machine runs for a time and then faults out(before life of cutter tool should be up). we reset n it runs for a time and then repeats problem-no excessive heat in spindle- pressures are set correctly AND-- the parts r coming out great! do u have any idea what is going on with this machine(before they keep changing parts!)what the heck does a spindle amplifier do anyways?! help!!

Comment #5 Stevo1 from USA (Contact Member) - Tue Feb 2 15:20:44 2010

"alarm number"

What is the alarm number??
Stevo

• Page 1 (Original Post) •

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