611D drive with spindle motor 1PH 7184

 Even you did not say but I think you have the drive 200A and spindle motor in you 840D controlled machine. can you let here know who is the machine builder?

Anyway, I will try to answer your question or saying your concern about safety current for motor and drive.

General speaking, you don't need to worry about --as your machine builder designed the drive to match the motor according to Siemens manual --NC60.1 (old version catalog) if you are interested , I think you can google it to find out that manual there will be example in the later part of the manual to show you how to calculate the motor to match the drive --for Feed motor or for spindle motor.

Here I can give you some rough ideas:

#1--you need to know in SIMODRIVE the power section ( we also call drive , drive box) the marked current , such as 200A, 160A, ..50A.--they are not rating current. and the value for feed motor (or say servo motor) and for spindle motor are different---different--different (repeat 3 times)

#2--For Feed motor the rating current for the drive is about 1/2 of label value such as 50A the rating is 25A, and 200A the rating is 100A, the labeled value is defined as overloading in less than certain time ( I forget , maybe 30 S or 60 S)--roughly saying drive will not defective even overload in the short period. 

#3--for spindle motor , when machine builder set up with drive , Siemens software for set up will show you 3 different currents such as S1, S4, and S6 ( I post the link for S1, S6..They are IEC duty for motor running cycle)  --I cannot remember what are exactly the 3 current but they are roughly from 30% to 60% of the drive label current ( such as 200A drive S6 may be 120A and S1 maybe 60A)

www.engineeringtoolbox.com/iec-duty-cucles-d_739.html

 hope my answer will help you a little to reduce your concern for safety.

If you need --something like configuring work, you can search Siemens catalog I mentioned above.       

Ramesh S

Hello Expert's,

I have lathe machine spindle motor

1PH7184-9NT00-0EB0.

To control it drive LT module EXT. 200A.

6SN1124-0AA01-0FA1.

Now I have question is what is safe current factor for drive?

Because motor max current is 430=37A, 255=76A and 230=103A voltage wrt Amp.

Drive rated Amp is 200.

I have physically is 39A at 1000 RPM.

So there is required 200A drive.

If yes so what is safe current factor for  drive. It means motor rated Amp + safe current= 200A in my example.

Also IGBT Amp rated FOR 200 A DRIVE ?

BR

Ramesh S

As control card is 3rd party , we cannot so sure what was happening. possible motor winding , or insulation issue? and you can balance for replacing or rebuilding the motor or just replace new drive. This is also happen some time in the situation with Siemens drive Siemens card and Siemens motor also Siemens CNC. you will notice some time only blown IGBT and fuse (100A-200A block) still good, some time fuse blown and cannot protect IGBT--it also defective.

Do you know I also make most test for motor and drives by 611U card with SIMOCOM U

IF you tested running good, normally the drive will be good and the motor also not bad except it running in 0 load condition . 

The motor winding balance and insulation need to check and try to apply load on the motor and keep it running longer time. if you cannot easy to apply load, I suggest to run you motor in lower speed such as 200 to 500 RPM, you will see the current will be increased when in lower speed. If you have large drive and small motor, you can try to make ramp up/down time short and try to start/stop more times and in high set-point 

Ramesh S

Hi Nulizhang Sir

Yes I have service motor from authorized Siemens partner and also test the drive n motor with simoconU upto 2000 rpm

It was working OK.but for testing they used 611U control board.

I Will try get service OEM.

Anyway thanks for your response. 

Never set S1.3 ON for any size of power supply module. or you will very easy to trig over voltage error when spindle ramp off 

for S1.1, you need tell me what is actual voltage of your mains 3 AC.

S1.1 working together with S1.4 to set following limitations--Pulsed Resistor module  On or Off, and  Monitoring of DC link voltage V dclink, wrong setting will trig error on power supply module

Ramesh S

Hi Nulizhang Sir,

I will try it later due to drive send for repairs.

Meanwhile I contact to OEM.

They suggest to me set S1.1 setting to on in E/R power module.

1. Incoming Line voltage is 398Vac@ 3PH and DC bus voltage is 600VDC. S1.1 off.

In this condition stop spindle from speed s500, got LED on DC over voltage.

Also get igbt failed of spindle drive.

Second think I found S1.3 setting on.

I think this is the reason for failed igbt,

Please confirm?

Because regenerative feedback off n this not standard setting.

Now I set S1.1  to on and remains off.

2. Incoming line voltage 400Vac and DCbus 625VDC @ S1.1 on.

Will soon post the results when get repaired drive.

Please confirm what happens if S1.3 is on?

Thanks again for your reply and awaiting for your answer.

BR

Ramesh S