Yaskawa AC Brushless Servo Drive

**Krebomatix** · 09-06-2017, 07:45 AM

Has anybody had any experience with Yaskawa SGDB AC servo drives I would like to control them using step direction,

I am using desk CNC for control but so far I am unable to get any movement on any axis yet.

This model does have the ability to do this, but it was previously run with an analog signal.

I do have a digital operator for changing parameters and I feel that this is where I am missing something.

Would appreciate any help.

From down under Paul

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**Jim Dawson** · 09-06-2017, 11:12 AM

It looks like it will according to the manual https://www.yaskawa.com/delegate/ope...E-S800-16E.pdf

See page 556, terminals 7, 8, 11,12

**CNCMAN172** · 09-06-2017, 12:33 PM

I have used these type drives with Mach3 with no issues. You will need to set some parameters in the drive and with these drive you need a hand held control which they sell on ebay for about $40. If you have their software you can also do this with a PC and a serial interface, but pretty easy with the hand held controller. You only need one hand held unit to program each drive they are not required for daily operations.

Russ

Hand-held
type
(JUSP-OP02A-1)
1-meter(3.3ft.)
cable
included

**Krebomatix** · 09-06-2017, 03:56 PM

Originally Posted by Jim Dawson

It looks like it will according to the manual https://www.yaskawa.com/delegate/ope...E-S800-16E.pdf

See page 556, terminals 7, 8, 11,12

Thanks for that Jim I have this manual and it's quite comprehensive I have connected to 7 and 11 they show using a tri state buffer for controlling the input using 8 and 12 but I am not sure if they are necessary the machine was previously using a num controller just wonder if there is something in the parameters I am missing.

**Krebomatix** · 09-06-2017, 04:13 PM

Hi Russ,
In the manual, they call it a digital operator and my machine came with one of these and I have been resetting the parameters to the best I can work out following the manual
can you remember anything in particular in the settings or pinouts for step direction control?

I have enabled the servos to an on state so they are ready.

Paul

**CNCMAN172** · 09-06-2017, 08:37 PM

Will send details tomorrow

**Krebomatix** · 09-07-2017, 06:31 AM

I'll buy you a beer if you can help, but I'll probably have to drink it, I'll let you know how it tasted

**mactec54** · 09-07-2017, 08:17 AM

Originally Posted by Krebomatix

I'll buy you a beer if you can help, but I'll probably have to drink it, I'll let you know how it tasted

You may already have these Pins taken care of seeing, you have the servos power up

Have you done the basic jog operation you can do this with the digital operator, these are the first steps to getting everything working, once you have each axes Jogging, then it's time to set the Parameters

Are you using 3phase power for the Drives ??

CN1 Pins 1, 2, 5, 8, 10, and 12, connected to Parallel Port GND

CN1 Pin 7 connected to your Parallel Port Step Pin

CN1 Pin 11 connected to your Parallel Port Dir Pin

CN1 Pins 40 , 42, and 43 to ( 0V ) connected to you External 24v DC Power Supply

CN! Pin 47 ( Enable ) connected to your External 24v DC Power Supply + Positive

The Parameters that need setting for Step / Dir are Position Control and Pulse Train Reference

**CNCMAN172** · 09-07-2017, 11:35 AM

Krebomatix,

The Yaskawa drivers come in several variety. The ones that can use position control using Step/Direction signals typically look like SGD-02-BP

The 02 is the wattage of the driver in this case 200W
The BP is the important item, the last "P" means the driver accepts position control.

Yaskawa AC Brushless Servo Drive-yaskawa-img_1784-jpg

The photo shown in a test setup for one of these drivers I am using to control a forth axis servo motor.

Pin 7,8 are the differential inputs for the PULSE (STEP)
Pin 11,12 are the differential inputs for the SIGN (DIRECTION)

You also need to configure the driver, look in the manual and you have to set Cn-2B to a "1" for position control.

These drivers like differential inputs but can be configured to be driven single ended but I found it works way better with differential signals. Most BOBs do not output differential signals, so you will need converters like those listed below to take the single ended output from the BOB and convert them to differential outputs that get fed into the Yaskawa.

https://cnc4pc.com/differential-line-driver.html

There are many parameters in the driver go page by page and ensure the ones you need set are set correctly and you will find these units work great.

Hope this helps.

Russ

**Krebomatix** · 09-07-2017, 03:24 PM

Thanks so much for that.

I had not done the 5 8 10 12
or 4042 43 47 as I had it in the run mode thinking this was enough.

I'll reconnect these and do a jog.

Yes 200 volt 3 phase

Is there anything special I need to do with the brake on the z axis?

Let you know how I get on in the next couple of days

Kind Regards Paul

**CNCMAN172** · 09-07-2017, 04:09 PM

On the brake initially I would ensure the brake has 24VDC applied which basically turns off the brake. Check the manual for your servo but all the ones I have had used 24VDC for the brake. Ultimately, you can rig something that enables the brake after z gets positioned and just prior to moving to a new height again. This is really only required if you have a heavy spindle. On some of mine I have just left 24V applied to the brake because I do not need a brake. If you fail to put the 24V on the break the servo on Z will not move at all.

Russ

**Mike58** · 04-27-2019, 01:05 PM

Originally Posted by CNCMAN172

On the brake initially I would ensure the brake has 24VDC applied which basically turns off the brake. Check the manual for your servo but all the ones I have had used 24VDC for the brake. Ultimately, you can rig something that enables the brake after z gets positioned and just prior to moving to a new height again. This is really only required if you have a heavy spindle. On some of mine I have just left 24V applied to the brake because I do not need a brake. If you fail to put the 24V on the break the servo on Z will not move at all.

Russ

Russ - can you update how this was done ? Is it working now
I have YYaskawa SGDS-01A72 drive - need to see the pins to use -as above
Please let me know.
Mike

**Krebomatix** · 04-29-2019, 04:56 AM

Originally Posted by Mike58

Russ - can you update how this was done ? Is it working now
I have YYaskawa SGDS-01A72 drive - need to see the pins to use -as above
Please let me know.
Mike

I see I have failed in a response here I just want to thank all including cnc zone and of course you Russ that the info was spot on and have the machine working beautifully.
The brake is independent of the servo there is an output from the servo i'd have to check again not hard to find just apply 24 volt and it releases.

Kind Regards to all Paul