Category Archives: Fanuc

A06B-6079-H208

FANUC A06B-6079-H208: Beyond the User Manual

The FANUC A06B-6079-H208 is a Servo Amplifier Module, SVM2-80/80. This module drives a servo motor of the 200V input series. It is a 2-Axis amplifier, and can be used with Type A or Type B interfaces. The module weighs approximately 7.0 Kg. Its external dimensions are 380 x 90 x 307 millimeters. It has a rated output current [Arms] of 18.7 and a nominal current limit [Ap] of 80.

One common alarm for the A06B-6079-H208 is Alarm 9. When this occurs, the M-Axis has an over current caused by a servo drive or motor fault. If you have an Alarm 9 with a dot, then that is an M-Axis IPM alarm, and you should replace or repair your A06B-6079-H208.

Below is the A06B-6079-H208 wiring diagram for ground cable connections:

A06B-6079-H208 Wiring Diagram
A06B-6079-H208 Wiring Diagram

The A06B-6079-H208 converts alternating current to direct current in the converter section, and exercises variable motor speed control by PWM control based on switching by the six transistors in the inverter section. Switching noise is generated by the 6 transistors turning off and on at high speeds. Each time a transistor turns on or off, noise current flows to ground through stray capacitance between the cable or motor and ground. The value of this noise current depends on the stray capacitance and transistor switching speed. The frequency band of the amplifier’s noise is about 30-40 MHz.

The presence of this noise means that cost-effective measures should be taken to reduce its level. Noise problems prevented prior to operation can help reduce costs over the lifetime of the installation. The following precautions should be taken when installing your A06B-6079-H208.
– Separate power lines and motor power lines from signal lines.
– Contain power lines and motor power lines in a metallic conduit.
– Perform appropriate grounding installation including grounding wire connections. This will also serve to prevent electrical shock due to leakage currents.
– Grounding wires should be as thick and as short as possible.

Noise can affect things like radio communication, refrigeration, telehones, fax machines, and essentially any electronics nearby.

MRO Electric stocks new and refurbished A06B-6079-H208 Servo Amplifiers. If you would like more information or to purchase a spare or replacement drive, please call 800-691-8511 or email sales@mroelectric.com.
A06B-6079-H208
A06B-6079-H208
A06B-6087-H130

FANUC A06B-6087-H130: Beyond the User Manual

The FANUC A06B-6087-H130 is a 200V Power Supply Module (PSM-30).

Multiple servo amplifier modules and spindle amplifier modules can be connected to a single power supply provided the output capacity conditions are satisfied. Below lies the basic configuration when using the A06B-6087-H130:

A06B-6087-H130 Configuration
A06B-6087-H130 Configuration

Always install the circuit breakers, magnetic contactor, and AC reactor on your A06B-6087-H130. Be sure to use the correct breakers as specified in the FANUC manual. To protect the module from lightning surge voltages, install a lightning surge protector across each pair of power lines and across each power line and the grounding line at the power inlet of the magnetics cabinet. Always connect the control power supply cable to the CX1A. If it is connected to the CX1B, fuses inside the module could blow.  If you are using two power supply modules, the magnetic contactors and AC reactors cannot be shared – they each have ratings that matches each power supply module. However, the lightning surge protector can be shared. Make the wires used as short as possible if you do this.

Notes on Cleaning the A06B-6087-H130 Fan and Heat Sink:

  1. A dirty heat sink or fan results in reduced semiconductor cooling efficiency, which degrades reliability. Periodic cleaning is necessary.
  2. using the compressed air for cleaning scatters the dust. A deposit of conductive dust on the amplifier for peripheral equipment will result in failure.
  3. To clean the heat sink, do so only after turning the power off and ensuring that the heat sink has cooled to room temperature. The heat sink becomes extremely hot, such that touching it during operation or immediately after power-off is likely to cause a burn. Be extremely careful when touching the heat sink.
MRO Electric stocks new and refurbished A06B-6087-H130 Power Supply Modules. For more product information or to request a price quote, please call 800-691-8511 or email sales@mroelectric.com.
A06B-6087-H130
A06B-6087-H130

FANUC A06B-6093-H152: Beyond the User Manual

The FANUC A06B-6093-H152 is a Beta series servo amplifier. It is important when using this amplifier that the ground fault interrupter is mounted. Fit the factory power supply or machine with a ground fault interrupter that is designed for use with an inverter. This will guard again fire and electrical shock. Ensure that the motor and amplifier is an appropriate combination, and that valid parameters are specified. Specifying an invalid parameter can not only prevent normal operation, but can also damage the amplifier.

Before connecting the power supply wiring on your A06B-6093-H152 amplifier, check that the voltage supply is within the appropriate range. It is also important that appropriate countermeasures are taken against noise. Signal lines should be routed away from the power supply lines and the power lines.

If you encounter a failure on your A06B-6093-H152, first check the LED display for the alarm code to determine the cause and apply the appropriate countermeasure.

Beta Series Servo Alarms
Beta Series Servo Alarms
FANUC Beta Servo Amplifier Alarm Codes
FANUC Beta Servo Amplifier Alarm Codes
MRO Electric stocks both new and refurbished FANUC A06B-6093-H152 Amplifiers. For more information or to request a quote, please email sales@mroelectric.com or call 800-691-8511.

FANUC Servo Motor Repair

MRO Electric and Supply provides fast and reliable FANUC servo motor repairs on all types of FANUC motors. Our factory-trained repair technicians have years of expertise with FANUC servo systems, and our facility provides them best in class testing equipment that will have your FANUC motor repaired, tested, and aligned precisely to the manufacturer’s specifications.

Our large inventory of spare parts and replacement components allow for us to repair your motor quickly to get you back up and running with minimal downtime. MRO Electric is able to recondition and test each of your motor’s components. This includes performing re-windings and replacing bearings, as well as repairing armatures, housings, encoders, resolvers, output shafts, and flanges.

FANUC Servo Motor Repair
FANUC Servo Motor Repair

As one of the nation’s leading FANUC servo motor repair specialists, MRO Electric places a strong emphasis on reliable customer service, great pricing, fast turnaround, and quality repairs. Each of our FANUC repairs come with a minimum 12-month warranty. MRO Electric can repair all FANUC motors and parts, both new and old.

FANUC Motor Repair
FANUC Motor Repair

Once your motor is received, it is thoroughly cleaned and reconditioned. Our trained technicians disassemble, inspect, and test each individual motor component. After each non-functioning component is replaced or repaired, we test motor function fault, brake, encoder, and thermistors. We then commission the motor using one of our drives, testing it in both forward and reverse for at least an hour.

MRO Electric also stocks both new and refurbished FANUC motors with rush shipping options available. If you require a working motor immediately, you can take advantage of our core exchange policy to return your non-functioning motor in for credit.

For a free FANUC servo motor repair quote, please email sales@mroelectric.com or call 800-691-8511.  For more information on our FANUC repair capabilities, you can visit our FANUC Repair page.

FANUC Drive Repairs from MRO Electric and Supply

Here at MRO Electric and Supply, our repair shop is designed to provide the highest quality drive repairs on all FANUC spindle and servo amplifiers. With a variety of testing platforms and a large stock of replacement components, we can fully repair and refurbish your FANUC drive to “like new” condition.

Each of our FANUC Drive repairs come with a 12-Month Warranty.
FANUC Drive Repair
FANUC Drive Repair – Before and After

Our Process:

  1. Inspection / Disassembly
    When your non-functioning FANUC drive is first received, our repair technicians go to work inspecting, disassembling, and thoroughly cleaning your unit.  Throughout this process, we will evaluate your drive to determine the primary cause of failure.
  2. Component Replacement
    Our technicians test and replace any non-functioning components on your FANUC Drive. We also replace any worn parts, as well as components that are prone to failure. This includes resistors, diodes, IGBT’s, capacitors, electrolytic caps, relays, and fans. We continue to troubleshoot and replace components until we are confident that your FANUC drive can move onto the testing phase.
  3. Testing
    With our numerous testing platforms, we perform a variety of dynamic functional tests on your FANUC drive to ensure reliability. After these procedures, your FANUC drive is left to run overnight in our facility to certify its consistency.
  4. Shipping
    Once your FANUC drive has passed our strict testing and quality control procedures, it is carefully packaged and shipped back to you in perfect working condition.

 

Our repair pricing can save you up to 75% compared to buying new drive. Save time and reduce costs by having your FANUC drive refurbished by the experts here at MRO Electric. 
For more FANUC Drive repair information or to request a free quote, please call 800-691-8511 or email sales@mroelectric.com.
A06B-6079-H106

A06B-6079-H106 Servo Amplifier by FANUC – Product Spotlight

The A06B-6079-H106 is a 1-axis Alpha Servo Amplifier Module that uses a Type A or Type B interface. When installing the module, observe the ambient temperature and output rating requirements. The continuous output rating  or continuous operation period of some amplifiers may fall as ambient temperature increases. If the amplifier is used continuously with an excessive load applied, the amplifier may be damaged. Before operating the amplifier for the first time, mount and adjust the speed and position detectors so that an appropriate waveform is obtained. If this is not done, the motor may not rotate normally or the spindle may fail to stop as desired.

If the motor makes any abnormal noise or vibration during operation, stop operation immediately. If operation is continued, the A06B-6079-H106 could become damaged. Take corrective action before continuing with operation. Be sure to only replace the battery when the servo amplifier is on. If the battery is replaced while the power is turned off, the stored positioning data will be lost. Also ensure that the battery connector is correctly inserted. The cover on the front of the A06B-6079-H106 carries a label indicating the specification code. When mounting a previously removed front cover, take care to mount the correct cover to the right unit.

You can observe an instantaneous motor current value on the A06B-6079-H106 by checking the voltage across a reference voltage check pin and a motor current check pin with an oscilloscope. You cannot use a device such as a multimeter to find the correct values. To check the power supply voltage, use the reference voltage check pin and the power check pin with a multimeter, oscilloscope, or similar. This will tell you the power supply voltage for the control circuit in the amplifier.

MRO Electric and Supply has new and refurbished A06B-6079-H106 Servo Amplifiers available now. For more information or to request a quote call us at 800-691-8511 or email us at sales@mroelectric.com.

A06B-6079-H106
A06B-6079-H106

FANUC A06B-6079-H206 – Beyond the User Manual

The FANUC A06B-6079-H206 is a 2-axis servo amplifier module. Its standard dimensions are 380 x 60 x 307 mm. The Status display is a 7-segment LED that indicates the operation status on the module. If the Status display is not on then the power is not turned on, the cable has a power connection, or the module is defective. If the module is defective, replace the fuse or servo amplifier. If there is a single middle line on the display, the control power supply is waiting for the ready signal. If all the outside lines are on, the servo amplifier is ready to operate and the servo motor is supplied with power. If an alarm is issued on the servo amplifier, a value other than “0” and “-” is displayed.

A pin board can be used with the A06B-6079-H206. The use of a check pin board allows you to observe the signals inside the servo amplifier. CN1 and CN2 are wired with a one to one correspondence. The connector pin numbers correspond to the check pin numbers. You can observe an instantaneous motor current value by observing the voltage across a reference voltage check pin and a motor current check pin with an oscilloscope. Note that you cannot use a device as a multimeter to observe the correct values. You can also measure the voltage across a reference voltage (0V) check pin and a power check pin with a multimeter, oscilloscope, or the like to observe the power supply voltage fr the control circuit inside the servo amplifier. If the measured voltage is within 5% relative to the nominal voltage, the measured voltage is considered acceptable.

A special lithium battery can be installed in the A06B-6079-H206. Be sure to install the battery with correct polarity, otherwise it may overheat, blow out, or catch fire. Use the factory-installed protection sockets in the unused connector after installing. This can help prevent the battery from short-circuiting.

MRO Electric and Supply Company sells new and refurbished A06B-6079-H206 servo amplifier modules.  To request a quote or for more information, please email sales@mroelectric.com or call 800-691-8511. 

a06b-6079-h206
A06B-6079-H206

 

Troubleshooting a Fanuc Motor

Here are some basic principles for troubleshooting a FANUC motor circuits with meter or megohm meter. This procedure will show you how to test for shorts in windings, cables, or opens. Before starting to test, make sure to turn all all the power sources to the machine and then disconnect the 3-phase motor lines from the drive end. Visually confirm that there are no problems with the cable and then begin testing.

Testing for a short to ground:

  • Using an Ohm meter: Disconnect all power from machine. Check all three wires at T1, T2, and T3 (all three phases) to the ground wire. The readings for this should be infinite, and if it is zero or reads any continuity then there is a problem with the motor or the cable. For this disconnect the cable and check each separately. Be sure to make sure leads on both ends are not touching anything, including the other leads. Most servo motor shorts can be ready with a regular quality  meter going to at least 10 megaohms.
  • Using a Megohm meter: Disconnect all power from machine. Check all three wires at T1, T2, and T3 (all three phases) to the ground wire. Reading should be between 600-2000 Megohms. Most shorts will be below 20 Megohms. Be careful not to touch the leads or the wires to anything when taking the reading because it can give a false reading. There should be about 1000 Ohms of resistance for each volt of incoming power, but this is not a standard rule. If it is 230meg to 600meg there may be deterioration in the cable.

Testing for Open or Short in the windings:

  • Using an Ohm meter: Disconnect all power from the machine. Put meter on ohms and test T1 to T2, T2 to T3, and T1 to T3. The range should be between 0.3 and 2.0 ohms, with most being at about 0.8 ohms. If it is zero there is a short between the two phases. If it is an open the reading will be infinite or well above 2,000 ohms.
  • Cable and plug notes: Often times the connector on the cable to the motor will get coolant in it. You can dry it out an retest, if it is still bad the inserts will get burn marks in them and cause a slight short, so they need to be replaced. If it is a DC motor, check the brushes. There should be 3-4 round caps to remove around the motor. Under these there is a spring with a square block (brush). Check to see how much is left, they may need to be replaced.

 

MRO Electric has a large stock of FANUC motors available. If you would like a replacement or spare, or if you have any questions, please call 800-691-8511 or email sales@mroelectric.com.
FANUC Motors
FANUC Motors

Human Machine Interface (HMI) Retrofitting

At MRO Electric and Supply, we are experts at retrofitting older HMIs with a new interface that is clean, modernized, and still works with your system.

Take this older Fanuc HMI as an example. The old CRT display has begun to fade out, making its use inefficient and none user-friendly. Old CRT screens are also prone to overheating, and they take up a lot of much needed space.

Fanuc HMI
Fanuc HMI Pre-Retrofit

A new LCD retrofitted screen can give you more accessibility, brighter displays, and user-friendly colors. MRO Electric can quickly update your HMI at a fraction of the cost of replacing your whole HMI. You also don’t have to rewrite your programming, or waste time and resources replacing your whole system.

Fanuc HMI next to LCD Retrofit
Fanuc HMI next to its LCD Retrofit

Below is a fully retrofitted Fanuc HMI with an LCD monitor. This lighter, energy-efficient replacement adds years of life and service to existing legacy equipment, and eliminates potential future downtime. In addition, all of our HMI repairs come standard with a 12 month warranty.

Newly Retrofitted Fanuc HMI
Newly Retrofitted Fanuc HMI

Get in touch with us today to learn more about this cost effective solution for your HMIs. You can request a quote by calling 1-800-691-8511 or by emailing sales@mroelectric.com.

A06B-6058-H005: Beyond the User Manual

A06B-6058-H005: Beyond the User Manual

Generally, Fanuc AC servo motors, like the A06B-6058-H005, have no parts that wear off or that must be replaced periodically, unlike DC servo motors, which have brushes that must be replaced. However, you should perform period maintenance for servo motors so as to keep their initial performance as long as possible and to prevent breakdowns. AC servo motors have precision sensors — their incorrect use or damage caused during transportation or assembling can result in breakdowns or accidents.

It is recommended that you inspect servo motors periodically, and of course we offer a 12 month warranty on all Fanuc products purchased from MRO Electric.

Receiving and Keeping the A06B-6058-H005

When you receive a A06B-6058-H005 module from MRO Electric, make sure that the motor is exactly the one you ordered, in terms of model, shaft, and sensor specifications, and make sure that no damage has been caused on the motor. Servo motors should be kept indoors as a rule. The storage temperature range is -20 to +60 Celsius. Do not place or install AC servo motors in a place where it is extremely humid and dew is prone to form, where there are steep changes in temperature, where there is constant vibration, or there is lots of dust and trash. Constant vibration may cause damage to the shaft bearings.

Daily Inspection Procedures

Before starting operation, or periodically (once a week or month), you should inspect the AC servo motors for vibration and noise, outside damage, stains and smudges, overheating.

Check the motor for abnormal vibration by hand, and noise by ear when the motor is not rotating, rotating at low speed, and accelerating and decelerating.

Check the Pulsecoding cover (read plastic) for crevices and the motor surface (black coating) for scratches and cracks. If you find a crevice on the Pulsecoder cover, you should replace it. If there is a scratch or a crack on the motor surface, the user should repair it by himself as required. If coating has come off, dry the portion of interest or the entire surface and coat it with paint for machines such as urethane paint.

Check the motor surface and bolt holes for oil or cutting fluid. Wipe off oil and cutting fluid on the surface periodically. Oil or cutting fluid can damage the coating by chemical reaction, possibly leading to failure. Also check how such liquid leaks onto the motor, and repair if needed.

Check to see if the motor is too hot during normal operation. Attach a thermolabel on the motor surface and check it visually to see if the motor becomes too hot during normal operation.

Visit our A06B-6058-H005 product page for more information, or to request a quote email sales@MROElectric.com or call 1-800-691-8511

 

a06b-6058-h005
a06b-6058-h005