Recently we had a customer who was working on troubleshooting a FANUC CNC Power Supply alarm that he had on a machine. He was wondering what the different codes stood for, so we wanted to go ahead and list the different alarm codes for this series. These codes apply to power supplies that start with the following prefixes. The “X”s after the H will be numbered, so an example part number is A06B-6087-H130.
A06B-6081-HXXX
A06B-6083-HXXX
A06B-6077-HXXX
A06B-6091-HXXX
A06B-6120-HXXX
A06B-6140-HXXX
A06B-6110-HXXX
Here is a list of the alarm codes for these series of Power Supply Modules.
AL01: The main circuit power module (IPM) has detected am Error (PSM-5.5,-11)
Overcurrent flows into the input of the main circuit (PSM-15 to –30).
AL02: A cooling fan for the control circuit has stopped.
AL03: The Temperature of the main circuit heat sink has risen abnormally.
AL04: In the main circuit the DC voltage (DC Link) has dropped.
AL05: The main circuit capacitor was not recharged within the specified time.
AL06: The Input Power Supply is abnormal (open phase).
AL07: In the main circuit the DC Voltage at the DC link is abnormally high.
Be sure to check out our article covering FANUC CNC Troubleshooting Frequently Asked Questions here.
A06B-6087-H130 alarm codes
For more information or to get a quote on a FANUC power supply, please call 800-691-8511 or email sales@mroelectric.com.
We also provide repair services for FANUC Power Supplies.
Updated on May 18, 2020 by Brian Hughes
Hello,
I have a FANUC power supply model: A068-6077-H106.
AlM: 02 “Cooling fan has stopped”
I just replaced with after market, same specs, new fan it is working now.
BUT, Alarm still is on display.
How to reset it?
Thank you for your assistance and your time.
me too having same problem
01 alarm
The problem is for voltage of the fan must be same
AL04: In the main circuit the DC voltage (DC Link) has dropped.
Why can I not find any connection information on A06B-6077-H002? My tech is looking for some type of diagram or information. We tried the B-65162 manual and could not find what we needed.
A06B-6250-H030 gives f error, what is the solution? can you help me?
I HAVE “A2” ALARM ONLY POWER UP CONTROL TYPE A06B-6202-H011 , YOU CAN TELL US ? WHAT MEANS THIS ALARM???