AC servodrive

[PRIOR666]

hello to all
I have one cnc VMC interact 412 and now i am giving him maintenance the tnc 151 control works fine but the spindle dont run, the spindle have one AC servodrive FANUC model A20b-1001-0120 its look like fine, anybody have a manual or any information for this drive, and i wonder if fanuc have some site (like heidenhain) where can find information of old components.
thank you.

[F.Sharifi]

hi ..
in Interact 412 , bridgeport usualy uses the diferent kind Fanuc Spindle dirve , for example for interact 412 with spindle motor AC modle 3 as A06B-1003 - B100 use Drive model 3 as A06B - 6055 - H103 please read right drive Nr. and also i need motor type and fanuc Nr. for Both then i can send you the ETS for checking .

[PRIOR666]

thank you for the answer
the motor is model 3 Nr A06B-1003-B100
the drive is A20B-1001-0120 FANUC AC SPINDLE DRIVE TOP CARD, and A20B-0008-0240 ORIENTATION PCB W2 RACK.
any suggestion or information will be very appreciated

best regards.

[F.Sharifi]

Originally Posted by PRIOR666 thank you for the answer the motor is model 3 Nr A06B-1003-B100 the drive is A20B-1001-0120 FANUC AC SPINDLE DRIVE TOP CARD, and A20B-0008-0240 ORIENTATION PCB W2 RACK. any suggestion or information will be very appreciated best regards.

please check as below :
1- TNC 151 machine parameter MP 63 ( RPM CODE =01991)
2- MP 86 -87 must be 9.999
3-MP 88 = 120 -MP 89 =80
4- set spindle rpm on 100 M03 and order to run by cycle start as usual after that please check the disply on spindle card let me know what you see ? any alarm or any arp disply because on F00 on this disply you must see the actual rpm by motor not spindle !
5- please check all green fuse on this board
6- after machine power up let me know the situation of LED1 green led on spindle board

check and let me know soon
F.Sharifi

[PRIOR666]

thank you very much for the guide i will make this test and i will inform him the results.
thanks again.

[PRIOR666]

thank you for the help
I already made the test and the results are:
1.- the points 1,2 and 3 are fine, the parameters of the machine are correct.
2.- the drive sometimes don't have energy, the green led are off and the 5 display too but suddenly the drive it energizes and the green led its on and the 5 display show 00000 and stay this way, in this time i entered s100 an m03 but the spindle don't turn and the drive don't change their state when entered s1000 and m03 the display in drive show AL-02 and sometimes AL-01,that they mean this alarms?
3.- the reference voltage from the tnc are ok
4.- the orientation board seems out, the green leds always are off, this is normal?
thank you very much for any advice.

[Cole84]

Hello !
Here is the list of alarms.

1.Are ur parameters inside drive OK ??
The 0000 means the drive is ready but it does not mean the parameters are right.
Do u have 4 buttons near display UP, DOWN, MODE, DATA SET (look at the first picture below ) if u have then read the post on this forum FANUC AC MAIN SPINDLE PROBLEM there is a procedure how to see, reset and set parameters (my post). Look in ur books do u have parameters for ur drive (look at the second picture these are the parameters for MY machine but the motor parameters from 41 to 53 i think they are standard for motor type u use - mine is 8S). DO NOT change them until u read and write on paper old ones (the ones that are now in the drive).

2.The green led near display and display should light when energy is up if it does not then the problem is in DC power circuit.Check the voltages +5,+15... We had the same problem (the led didnt light) and we changed one chip and one capacitor on board (If u have problem with DC supply i think the problem is in capacitor because ur board sometimes start to oscilate what tells me that chip is ok and when it start it keep itself powered, then the green led light and 00000 or alarm message is shown on display ). But then the parameters were wrong (AL-17) then we reset them and put in parameters from machine builder and now it is working like new.

Best regards !

Alarm 01 (AL-01) Motor Overheat
Causes
Damaged motor fan, overload, motor cooler is dirty, loose connection.
Remedy
Replace parts, clean cooler, check connections, review cutting conditions.

Alarm 02 (AL-02) Excessive Speed Deviation
Causes
Overload, transistor module is damaged, loose connections, error with speed feedback signal, blown fuse.
Remedy
Replace parts, check connections, review cutting conditions.

Alarm 03 (AL-03) Blown Fuse in DC Link Section
Causes
Indicates that the fuse F4 in DC link is blown (models 30S and 40S).
Remedy
Check power transistors and replace fuse.

Alarm 04 (AL-04) Input fuse blown / Input power open phase
Causes
Defective transistor module, blown fuse.
Remedy
Replace parts, replace fuse.

Alarm 05 (AL-05) Control Power Supply Fuse Blown
Causes
Defective PCB, Abnormal power supply voltage.
Remedy
Check power supply, replace PCB, replace fuse.

Alarm 07 (AL-07) Excessive Speed
Causes
Incorrect parameter setting.
Remedy
Reset parameter value.

Alarm 08 (AL-08) High Input Voltage
Causes
AC power supply too high, incorrect setting of toggle switch for voltage setting.
Remedy
Change setting from 200V to 230V.

Alarm 09 (AL-09) Heat sink is overheated
Causes
Cooling fan is defective, overload, dust and dirty.
Remedy
Replace fan, review cutting conditions, clean parts.

Alarm 10 (AL-10) Input Power Voltage Low
Causes
Drop in input power, momentary power failure.
Remedy
Correct case and reset alarm.

Alarm 11 (AL-11) Overvoltage of DC Link Circuit
Causes
High power impedance, PCB or transistor module are defective.
Remedy
Check AC power, replace damaged parts.

Alarm 12 (AL-12) Overcurrent flows to DC Link Circuit
Causes
Output terminals or internal motor of motor is shorted, defective PCB or transistor module.
Remedy
Check connections, replace damaged parts.

Alarm 13 (AL-13) CPU Inter Data Memory Alarm
Replace PCB

Alarm 15 (AL-15)
Cause
Spindle switch /output switch alarm.
Remedy
Check sequence.

Alarm 16 (AL-16) RAM Abnormality
Causes
Defective RAM or PCB.
Remedy
Replace RAM, replace PCB.

Alarm 18 (AL-18) Program ROM sum check error
Causes
Defective ROM.
Remedy
Replace ROM.

Alarm 19 (AL-19)
Causes
Defective A/D convertor or PCB, loose connections.
Remedy
Replace A/D convertor, replace PCB, check connections.

Alarm 20 (AL-20)
Causes
Defective PCB, loose connections.
Remedy
Replace PCB, check connections.

Alarm 24 (AL-24)
Causes
CNC power off, defective optical cable.
Remedy
Turn power on, clean or replace optical cable, replace LSI, replace PCB.

Alarm 25 (AL-25)
Cause
See Alarm 24
Remedy
See Alarm 24

Alarm 26 (AL-26)
Cause
Defective signal level/line of spindle motor for C axis control, defective detector circuit for C axis control, incorrect parameter setting.
Remedy
Check signal level, connect signal cable securely, replace detector circuit, set correct parameter value.

Alarm 27 (AL-27)
Causes
Position coder signal line defective, incorrect parameter setting.
Remedy
Connect signal cable securely, replace signal cable, set correct parameter values.

Alarm28 (AL-28)
Cause
Defective signal level/line of spindle motor for C axis control, defective detector circuit for C axis control.
Remedy
Check signal level, connect signal cable securely, replace detector circuit.

Alarm 29 (AL-29)
Cause
Overload.
Remedy
Review cutting conditions.

Alarm 30 (AL-30)
Cause
Defective power transistor, defective PCB.
Remedy
Replace power transistor, replace PCB.

Alarm 31 (AL-31)
Cause
Motor constrained, defective motor speed reversion signal/signal cable
Remedy
Connect cable securely, replace cable.

[PRIOR666]

thank you very much
the information is very complete, i think that is it what i need, i will make some tests and report the results.
again thank you to share this information