1. Home
    1. Dashboard
    2. Search
  2. Forum
    1. Unresolved Threads
    2. Members
      1. Recent Activities
      2. Users Online
      3. Team Members
      4. Search Members
      5. Trophys
  3. Articles
  4. Blog
  5. Videos
  6. Jobs
  7. Shop
    1. Orders
  • Login or register
  • Search
This Thread
  • Everywhere
  • This Thread
  • This Forum
  • Articles
  • Pages
  • Forum
  • Blog Articles
  • Products
  • More Options
  1. Robotforum - Support and discussion community for industrial robots and cobots
  2. Forum
  3. Industrial Robot Support and Discussion Center
  4. Fanuc Robot Forum
Your browser does not support videos RoboDK Software for simulation and programming
Visit our Mainsponsor
IRBCAM
Robotics Channel
Robotics Training
Advertise in robotics
Sponsored Ads

SRVO 157 CHGAL

  • rcole
  • October 15, 2018 at 12:51 PM
  • Thread is Resolved
  • rcole
    Reconditioning specialist
    Trophies
    3
    Posts
    9
    • October 15, 2018 at 12:51 PM
    • #1

    Needs some help.. i have an R30iB Mate w\M10iA\12
    I'm getting srvo157 chgal = Cause: The charge of the capacitor of DC link voltage on the servo amplifier could not finish within
    specified time.

    i have tried everything the crc is saying and fanuc has said to try, changing amp, estop board and also tried the contact behind e stop board...
    i also verified that all voltages are correct...

    Has anyone seen this.. PLEASE HELP!!!!!

  • USURP_RUR
    Reactions Received
    8
    Trophies
    4
    Posts
    162
    • October 16, 2018 at 9:31 PM
    • #2

    Check to see if you have dropped 1 leg of your 3-phase input power.
    Also make sure that connector CRRA12, at the bottom of the 6-channel servoamp, is connected properly.
    Also check that breaker QF2 is ON and not in the trip-free position. If it is trip-free, go all the way to OFF and then back to ON.

    Edited once, last by USURP_RUR (October 16, 2018 at 9:33 PM).

  • Skooter
    Reactions Received
    169
    Trophies
    6
    Posts
    2,024
    • October 17, 2018 at 3:27 AM
    • #3

    Also check CNMC6 at the E-Stop board. Pins 1, 2, & 3 supply the 200V to the E-Stop Unit and 4, 5, & 6 provide the precharge for the servo amp capacitors.
    Carefully look at all the connectors at the E-Stop and Servo Amp and make sure contacts are fully seated in their connectors and not discolored from heat.
    Very, very carefully use a low impedance meter to measure/verify the voltage coming from breaker QF2 as mentioned by USURP_RUR. Should be 200-240VAC with all voltages nearly equal when measured phase-to-phase. If it checks good, do the same at CRR38A on the servo amp while someone enables the deadman on the pendant.
    When changing out the E-Stop & Servo Amp, were all the jumpers moved to the new units?
    Also when changing unit, a cable may get missed if it ends up behind something else, I missed plugging a brake connector back in last week.

  • Carbon Pro
    Reactions Received
    3
    Trophies
    3
    Posts
    10
    • November 6, 2019 at 12:49 AM
    • #4

    I just had the same issue today. SRVO-157 CHGAL Gr1 axis 1 and 2 on an M20ia 12L robot. Checked the voltage at all the connectors as the manual suggested. Everything checked out okay. Replaced the servo amplifier, fortunately we have quite a few of these robot controllers in the facility so we swapped it out with a known good amplifier and still a no go. Swapped out the e-stop board and replaced the contactors behind it. We were able to get the robot to reset and move around in teach. Oddly though we didnt have to master the robot?!?! It ran in auto for about two seconds before shutting down for the same fault. We ended up calling a Fanuc Tech in to help troubleshoot the issue. The quote included new servo cabling for the robot. When I asked why they quoted that they said from past experience the cabling often needs replaced. They also quoted a new breaker and replacement servo motor in case one the axis needs it replaced. None of this was in the manual so I hope this helps anyone with the same issue. There are a few more options to try if following the manual doesn't offer a solution.

Advertising from our partners

IRBCAM
Robotics Channel
Robotics Training
Advertise in robotics
Advertise in Robotics
Advertise in Robotics

Job Postings

  • Anyware Robotics is hiring!

    yzhou377 February 23, 2025 at 4:54 AM
  • How to see your Job Posting (search or recruit) here in Robot-Forum.com

    Werner Hampel November 18, 2021 at 3:44 PM
Your browser does not support videos RoboDK Software for simulation and programming

Tag Cloud

  • abb
  • Backup
  • calibration
  • Communication
  • CRX
  • DCS
  • dx100
  • dx200
  • error
  • Ethernet
  • Ethernet IP
  • external axis
  • Fanuc
  • help
  • hmi
  • I/O
  • irc5
  • IRVIsion
  • karel
  • kawasaki
  • KRC2
  • KRC4
  • KRC 4
  • KRL
  • KUKA
  • motoman
  • Offset
  • PLC
  • PROFINET
  • Program
  • Programming
  • RAPID
  • robodk
  • roboguide
  • robot
  • robotstudio
  • RSI
  • safety
  • Siemens
  • simulation
  • SPEED
  • staubli
  • tcp
  • TCP/IP
  • teach pendant
  • vision
  • Welding
  • workvisual
  • yaskawa
  • YRC1000

Thread Tag Cloud

  • abb
  • Backup
  • calibration
  • Communication
  • CRX
  • DCS
  • dx100
  • dx200
  • error
  • Ethernet
  • Ethernet IP
  • external axis
  • Fanuc
  • help
  • hmi
  • I/O
  • irc5
  • IRVIsion
  • karel
  • kawasaki
  • KRC2
  • KRC4
  • KRC 4
  • KRL
  • KUKA
  • motoman
  • Offset
  • PLC
  • PROFINET
  • Program
  • Programming
  • RAPID
  • robodk
  • roboguide
  • robot
  • robotstudio
  • RSI
  • safety
  • Siemens
  • simulation
  • SPEED
  • staubli
  • tcp
  • TCP/IP
  • teach pendant
  • vision
  • Welding
  • workvisual
  • yaskawa
  • YRC1000

Users Viewing This Thread

  • 1 Guest
  1. Privacy Policy
  2. Legal Notice
Powered by WoltLab Suite™
As a registered Member:
* You will see no Google advertising
* You can translate posts into your local language
* You can ask questions or help the community with your knowledge
* You can thank the authors for their help
* You can receive notifications of replies or new topics on request
* We do not sell your data - we promise

JOIN OUR GREAT ROBOTICS COMMUNITY.
Don’t have an account yet? Register yourself now and be a part of our community!
Register Yourself Lost Password
Robotforum - Support and discussion community for industrial robots and cobots in the WSC-Connect App on Google Play
Robotforum - Support and discussion community for industrial robots and cobots in the WSC-Connect App on the App Store
Download