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You need to disable P-OT and N-OT using params or wire pins (42,43) on the drives to ground to enable movement.
You could make them part of your limit's circuit.

If you use one large line...

I have not checked the docs/polarities/etc. But, at first glance:

I see you do have the encoder outs connected for feedback.

The Kflop/KAnalog signals are not valid on power up.
You are...

Tom.

It seems that setting/clearing bits for Enable in a watchdog loop is a common task. I understand that it is simple code. But, it would be nice to have configuration settings for this task....

I see a watchdog.c example, will I need to add code in my watchdog loop to set the output bits according to the axis->Enables?

I have allocated an FET switch output for each axis to sink the /S-ON (Enable) drive inputs. I removed them from the E-Stop Safety relay contacts.
I also had to remove the /S-RDY outputs from...

Thanks.

I see: The software may have an axis set to Enabled = false so +-10V is not being sent / position is not being maintained... then the axis could drift from a bias or from noise.

I see...

I am using Yaskawa SGSH servo drives that have /S-ON pins for enabling / disabling.

I am planning on wiring them in a circuit that cuts motor power to the drives (not control power). The E-Stop...

That schematic has 3 drives each with its own command input. The one Bill posted shows only one command input and 150v (vs. 180) outputs on the transformer. I do not know... the 1KVA 6.66A seems weak...

The motor driver was powered from the transformer. But, I believe the controller only powered one motor at a time (not cpapable of running 2 or 3 at a time).
That is from what Bill posted elsewhere...

It looks like the transformer is only rated high enough to run one motor at a time. The label you quoted says "6,66 A" - that is the rating you have to go by (150v @ 1KVA is 6.66 Amps). At any...

I thought this big transformer was going to be dedicated to the high amp DC supply? If not, then I do not see how it is useful at 200+ rectified when < 150 is needed.
If dedicated, applying 240 to...

I am not sure, you could ask Antek what they recommend.
I do not know what you mean about 120v for other accessories. I would think 120 ac is brought in on an aux contact on your main contactor. or,...

Yes, I quoted the Sigma II FAQ. You are correct, perhaps it does not apply to the Sigma I's.
The drives and motors are Sigma I - SGDA-01AS drives and SGM-02 motors. I believe that these use standard...

You are "(VERY green with electronics)" so, you might want to forget about building your own power supply.
I read up on some of your other posts. It looks like you are set on building the supply...

OK, I was mistaken about my limit switches. I checked and luckily I have 4 Double Pole NC switches per axis. The Positive/Forward limit activates two at the same time. Another is activated by...

I was looking for information on this subject because I also have some SGDA 01AS and some 200W motors. I ran across this is the Sigma II FAQ:
>>
When using a matched Servo Pack / Servo Motor...

I am sorry. I jumped the gun when I started this thread. I was still in the STEP DIR design mode from only having KFlop. Now that I am getting KAnalog, I will just use the drive's VREF for Speed...

I need to determine how to connect the STEP and DIR signals from KFlop JP4/JP6 (muxed because I am using KAnalog) to Yaskawa SGDH servo drives.

Yaskawa Docs:
Reference by Pulse Input
Positioning...

Thanks Al.
This is my first CNC machine - I have spent countless hours reading and planning but I have not gotten very far.

I see the KFlop Config for Limits that have Action settings that are a...

Thanks for all of your help Tom.

I probably have the parts to interface these (and home switches etc) but I know KAnalog will be a cleaner and easier solution.
So, I just now purchased your...

I swear I posted a reply, but now it is gone?
Oh well....

I will wire the switches to the drives.

You talk about KFlop inputs... is that just in case I only want to connect the switches to...

>>"If an E-Stop shuts down the drives the encoder signals would stop"
I was thinking that the drive may not pass on encoder signals when disabled. But, it sounds like you are saying it should... so...

This is a chicken and egg problem also. If KFlop/KMotion is getting encoder signals, it should fault on following error even if the limit switches are not connected to it.
I do not know what...

I have seen limits in the E-Stop / safety circuit. But, I do not think I want to provide a hardware limit override to get out of E-Stop and jog off of the limit.
I am researching the E-Stop using a...

The servo drives I am using have inputs for P-OT and N-OT = Positive/Negative Over-Travel.
There are settings for what happens when a switch opens.

Should I use these or should I use KFlop...

I am going to use KFlop Step/Dir to Yaskawa SGDH servo drives in Position Mode for a vertical mill retrofit. These drives have outputs for differential encoder signals which I could send (singles) to...

I agree that a threshold of 5 is too much - it introduces a kind of dead band. 1 is really all that is needed (with D) to stop the horrible oscillations at stand still.
I was unable to get a decent...

I figured out the problem. Since the PWM is inverted, 100% is supposed to be a steady high. The PWM output still has pulses at 255.
This causes the motor to turn when the ch->Output is 0, which...

I am moving this discussion from another forum to the CNCZone. It is much easier to read and add attachments etc.

Recap:
I am trying to control AMC BD30A8 "Direct PWM" servo amps using the KFlop...

I do not have a trade, but please let me know if you put it up for sale.