SM 102 SLT CON code

Long time follower, first time posting.

I have a SM 102 with code
INT. SLT CON 3F7E
DYN. SLT CON FF7F
The problem is everything is functioning on the press except the main drive motor will not start.
Any help I would greatly appreciate.

 

You have a problem with the main motor control voltage.
Check connections and measure frequency and current

 

Hi Tate,
Your problem is most likely from a wrong rotating field of mains voltage, that is anticlockwise power supply rotating field.
So just interchange any two phases till your get the error eliminated. Your feedback will be appreciated.

 

Dear wunmi,

Your comments are not clear, sorry. Is it based on the error codes? How the phases of the servo motor can be interchanged themselves, if the motor and machine worked properly yesterday?

Could someone provide the interpretation of the error codes 3F7E, FF7F by Heidelberg?
In general, proper RUN command and feedback, drive, motor and brakes(if any), mechanical load should be checked if motor do not start and a proper power is supplied to the machine.

 

Hi friends
As per code problem seems I main motor supply.
Phase can be reverse from direct supply (supply provider also)
For check pls see the directon of rotation on the oil pump and if ok then check supply voltage, fuese.
​

 

Dear Ashok,

Is there any exact explanation of the errors by Heidelberg?
Is it a servo motor? If so, it has a servo drive and the servo system is irrelevant to a phase order on the mains.
Could someone describe the system, the motor, and the method of motor control/supplying?

Thank you,
Oleg T.

 

Hi
Error meaning already given above
This is not servo motor.
It's oem design drive and only r&d people have tools to check.
We are trained in Heidelberg factory to find the fault adn based on our experience we recommend
and only option is to change the part.

 

Test this and let me know so I can continue with the diagnostics.

 

Dear Ashok,

This are the silliness training and recommendations if so, sorry. Pass my hello to your "teachers" and ask them to explain you at least the motor type instead of the magic but expensive "OEM" lingo, while the next lessons.

Where a meaning was given? Only the claim by Tate, that the motor is not run.
The "most likely" and "seems" are not the terms for the mathematics and technique, only for..

What is the motor, how it is controlled/supplied?
I am sure, the best way to success, is to understand the physics of a system as much as possible, before any technical or procurement activities.

Sometimes dancing with OEM tambourines around a machine could give us a desired result. The problem is that there is no dance which could be repeated exactly and seen again.

Regards,
Oleg T.

 

Hello Oleg,
It seems that you are already pissed off by this problem but I can see the other members trying to help you to solve the problem remotely.
The meaning of error codes was given by Heidelberg and most of the time it is only a hint for the technicians to diagnose the problem on the machine and it is not really precise and as Ashok said it's based on our experience. First of all you didn't give us a clear history of your machine and the incident since it is important to know whether this problem happened during production or after switching ON. I need your explanations. As the other members explained, the first assumption is phase sequence for these two errors. To check the phase sequence, you need a tool or try to check the rotation of Oil pump, compressors or blowers. To my experience, Oil pump is the most convenient. If the phase sequence is correct, then we should check some other modules together.
back to your question regarding "system". Your machine is running with DC motor (not a servo motor). DC main motor is controlled by power converter board "SRK". SRK controls and regulates the armature and field circuits. The power part is called "SLT". SLT generates the control signals for the field and armature windings of the DC main motor. In addition the SLT records the armature and field currents as well as the mains, armature and field voltages. These current and voltage values are then used for drive control. The converter power part SLT supplies the main motor with current. The SLT consists of the two power bridge modules SBM1 and SBM2. The field supply is effected by the SVT. SBM1 and SBM2 are responsible for the power supply of the armature circuit. SBM1 and 2 are called 4 quadrant bridge (SCR controlled), meaning SBM1 is used for Forward direction and SBM2 is used for Backward. During production both of them are involved to supply maximum power to the main motor.

I hope you find these explanations are helpful.

Good luck,

 

Hello, Mathew,

She given birth finally for a few useful information.
I am pissed off due the incompetence of the technicians and comments, and not by this problem which is not mine as well as the machine is not. Two-bit price for such dancing experience, while a big profit for any OEM. Your "first of all" should be addressed to the commentators and user, and not to me, please read the topic completely and not only its last message(s).

As to the system, the first less or more intelligible explanation of the system here is yours. You should explain to the Heidelbergerg educated commentators, not to me(fortunately, I was not educated there), what is the DC motor, its armature and field, so that they would not be searching for a phase order in a classic brushed DC motor, and for a new motor replacement without the system inspection.

Dear Tate,

According to the Mathew's explanation (if this is indeed DC motor, I have seen in the Internet AC motors referred as the main motor for such machines) and the claimed fault, a RUN and other relevant commands, current feedback, field and armature DC output stages, motor, and motor load should be checked.

Regards,
Oleg T.

 

Hi
Mathew
I think alonex is not the end user but he is guy with experience in hmi/drive/plc only who didn't know anything about Heidelberg machines and it's software part
So why to guide him and teach him about the same
Leave him

 

Dear Ashok,

I design and repair similar equipment as HMI/Drives/PLC, including Heidelberg. The listed equipment should be the next levels of your education if any, since any OEM ditties are changed often.

Regards,
Oleg T.

 

You are right, it was my mistake

 

Dear Mothew,

So, correct it by teaching this selective "guide-teacher", with all the technical background and respectful relations.
Specialists..

Regards,
Oleg T.

 

Thank you for the replies. The story on this press is that it ran fine. We moved it across town and got everything hooked up. Everything on the press works except main drive motor. We are getting power to SVT board but not the motor. Upon startup the oil pump was going clockwise but the air compressor was backwards. We swapped phases in the air compressor cabinet. Everything else that we can tell is the correct rotation.

 

So the problem is solved?

 

Dear Tate,

Thanks for returning here.
As you can see, I am not familiar with the nuances and operation of this machine. My comments are general, but they can help when OEM tambourine musical notes do end with "don't forget to plug the machine in the mains" violin.

The move of the machine and further new place adaptation procedures, look as the main reason(s) of the fault. All should be tracked and checked again. The phase order at the new place are different of an order at the old place, since you was needed to play with phases order for some electric machines to rotate correctly.

Please confirm that the main motor is a DC motor. If so, you should be oriented on the Mathew's overall block diagram of this DC drive. A general DC drive should not take into account a phase order of the mains, however phase zero cross sensors may affect the rotation direction in a SCR regulating drive and motor, depending on a design. So, pay attention on phase order as Ashok and Wunmi noted, and/or on polarity of the armature and filed DC voltages (both may cause a reverse rotation). As well, both the armature and field DC voltage values (no frequencies/pulses should be under your interest), corresponding controlled rectifiers (SCR) should be checked. All my prior check points are also still actual.

Depending on a DC motor nominal voltages, an usual Laboratory DC power supply(-ies) may be used for a DC motor testing. And remember, the motion and electricity are both dangerous.

Regards,
Oleg T.

 

Yes main drive is DC. So we swapped phase order and now have both air compressor and oil pump running in correct direction, but still no startup on main drive. We have checked and checked the voltages coming in and going out. We are getting the 5v from SVT board and on the motor. One thing we noticed at the motor is a volt fluctuation from 108v to 128 volts. Seems to be bouncing up and down.

 

Also so when we swapped phases we are getting new codes