Sigma-5 Speed Control Mode Application

This 15-minute eLV demonstrates the use of the SigmaWin+ Setup Wizard and parameter editor to configure a speed control mode application on the Sigma-5 analog-pulse servo amplifier. Application functionality is confirmed using SigmaWin+ monitors and wiring check.
This eLV is also available on the Yaskawa America, Inc. - Drives & Motion Division learning management system, "Learn with Yaskawa". Keyword: eLV.Sigma5.01.App-SpeedMode
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[@derina.maleek9408]

thank you

[@mainathannagarajan6102]

hello sir , i trying to configure , in your video ,p-con (input config), i searched in sigam 5 manual there is no pin detail of p-con. i am using sgdv-01a 180 servo pack

[@YaskawaAmerica]

Thank you for your interest in the "Sigma-5 Speed Control Mode Application". Please reference section 6.9.4 of this user manual for /P-CON input located here: www.yaskawa.com/downloads/search-index/details?showType=details&docnum=SIEPS80000045. If you require further assistance, please contact our Technical Support at www.yaskawa.com/support-training/support or your local Yaskawa Service Provider - www.yaskawa-global.com/company/profile/global

[@Phelec59]

I am a technician looking at a press brake folder. It has 2 sgdv-3r5d01a driving an X and R axis. The problem is that both these drives are running way too slow. Too slow for them to reach their respective reference point in time before the controller calls out NC not ready. All parameters and sequence files are ok. There is no go slow command given from the controller. There are no error messages appearing. The drives will reach their respective reference points if you put the machine in manual mode and wait long enough, about 5 minutes rather than 5 seconds. 3 phase power is correct. 24 volt rails are correct. It is puzzling that both drives are exhibiting the same fault. Could you suggest what I could be looking for? Something common to both drives? The Turkish manufacturer has given up offering any more support. They want $20,000 to come to my country to "possibly " fix the machine.

[@YaskawaAmerica]

We are pleased to hear that you are interested in "Sigma-5 Speed Control Mode Application." It appears the drive is in position mode, which can utilize Pn218 for multiplication of reference pulse inputs. However, I suggest contacting our Technical Support at www.yaskawa.com/support-training/support or your local Yaskawa Service Provider - www.yaskawa-global.com/company/profile/global with more details on your application.

[@Phelec59]

@YaskawaAmerica as a technician, I thought I would give you a follow-up to the problem. Before I was called in to solve this machine's problem, a few other people had their go at solving the problem. And did not succeed. The original reason to investigate this machine was the fact rain water from a faulty workshop roof entered through cable entries on the top of the electrical cabinet.
It was reported that the X and R drives ran extremely slow since this incident. It appeared the water may have damaged some of the various modules in the cabinet. I certainly noticed evidence of water stains in some of the modules as well as the intetnal wall of the cabinet.
One of the earlier technicians reported that the analogue voltage coming from the Delem modules that go to the Yaskawa servos were 0.7 and 9.9 volts. Yet both axis were going very slow. I do not know why they did not latch onto this crucial information.
I investigated this further. I made up a short M - F 15 pin D lead with long test leads that first I could put on my multimeter to verify what the earlier technician reported. Sure enough, they were that level. My next step was to disconnect the plug from the Delem module and put my own dc voltage from a variable power supply into the lead. I set my power supply to 3 volts. Wow, when connected, my supply went into over current mode. I disconnected the supply and connected the multimeter on ohms. It showed a virtual short. I thought, oh no, a shorted input on the Yaskawa. It was late, and I took the Yaskawa home to investigate whether it could be repaired or did it (and the other one) need replacing.
At home, I removed the casing and could not see any damaged components. I put the meter across pins 5 and 6. Wow, 27k ohms. That's good, I thought, then quickly thinking there must be a short in the machine. I couldn't get to the machine quick enough the next day. It's like you on the hunt for an animal, and you can almost smell it or hear it's foot steps. The adrenaline is kicking in.
I got to the workshop and went for the ends of the leads to see if there were any shorted solder joints. Everything looked fine. Nice clear heatshrink over all wires. But, there was definitely a short, even with both ends unplugged?? I started to fish out the cable from the clip-on box conduit. Wow, there it was. A weird buckled up section (about 1 inch) of the cable with the outer sheath split open, exposing an equally buckled up braided shield.
Stripping back the outer jacket and cutting open the braid, revealed melted and twisted wires that in places were bare and shorted together. That's my short, right there I thought. The cable for the other drive was was damaged the same almost next to this cable. Inspection of this other cable revealed the internal wires were twisted so badly they actually snapped in half, hence an open circuit.
I didn't take any chances, so I replaced the whole length of both cables with new cable I luckily had. Switching the machine on and going through the start up procedure brought this wonderful sound if the axis speeding along to their respective reference position.
Now, I was so happy to be the one to finally repair this $160,000 machine. But it still played on my mind what caused these 2 cables to be like that. Thinking back to the fact it all happened when water leaked into the cabinet. Months before I was called in.
The wires in the cable certainly had melted together. Yet the outer jacket looked fine except being split open.
Upon further investigation I could determine the cable looked as though it had shrunk and it caused the internal wires to bunch up. I tried soaking a section of the old cable in water overnight. No change. Strike that theory off.
Looking at the cabinet I realised a fan heater had been used to dry out the water. All of this was made difficult for me because none of the employees or management were currently employed there.
On the damaged section of cable I also noted that while the internal wires, braid and outer jacket were bunched up, the pull cord in the core of the cable was still staight? What has gone on. I got a section of undamaged cable and blew hot air on to it from a heat gun. Holding it far enough away so as not to scorch the cable. Low and behold after a few minutes the cable stated to shrink and buldge
I worked it out. The outer jacket has a reasonably good heat rating. While the inner wires have a very poor heat rating. But the most surprising thing was, the central draw cord (also synthetic) was shrinking in length under heat.
Now not being the first person on the spot and the original people in charge no longer there, I assume a fan heater was used to dry out the cabinet. The slots in the clip on conduit to allow cable entries or exits anywhere along it's length allowed a small concentrated flow of hot air onto the 2 cables in question. I imagine the fan was low heat, but running for a couple of hours.
Now I can sleep at night.