Retrofitting a 3-axis VMC with DC servos - guidance needed

I'm having some trouble with the servo enable relays.My relays have flyback diodes, but the datasheet is giving me a headache. The coil draws 40mA, but the flyback module includes an LED with no specified current draw. Since I can't be sure of the total load, I'm guessing I can't use it.Would you guys just change the module for these specific commands, or is there a better workaround?

These are the Finder 55 Series

i think its better to use other relays for these ones like interface relays isnt?

If it takes all this just to run the enable signal, I'm thinking it's better to wire it directly to the drive. Is there any good reason to keep it isolated with an extra relay? The 7i97T outputs are already opto-isolated, and my servo drive has a 10kΩ input impedance anyway. Adding a relay isn't really worth it, right?

The 7I97T enable outputs should be able to drive that directly.

If you worry, you can always measure the current with a DVM
 

Thanks, i use new relays to keep that separation and use the old ones to the tool changer (not automatic, but to grip the tool holder i dont know how its his name in english) and another auxiliary, but i want to keep the 7i74 and 7i73 to the future in the end, I will use the 7i84u connected by the port in 7i97t.
Looking at the pins in it using the standar bin it will recognize the 7i84, now i have the bin of the 7i97t & 7i74 i will be a problem or its better to upload the standar?
And the configuration to connect the board its ussing this no?
 
Again, thanks for all the help.

If you use 7i97t_7i74d.bin firmware,  sserial channel 0 is on the 7I97T and
sserial channels 1..7 are on the 7I74.  (Physical channel 0 is skipped on the 7I74)

Perfect, ty so much.
I have a problem with the 7i84u.
In the datasheet mention W1 y W3
But apear W4.
What this do?

Currently unused

Hi everyone, I'm experiencing noisy/fluctuating readings on my axes. They are currently ungrounded as I just wanted to verify basic readings first. My main star ground is in the main electrical cabinet, but my Mesa 7I97T is mounted remotely in the old display/controller enclosure. I'm considering the grounding scheme shown in the attached diagram. Is this a good approach for logic signals, or will the extra connection points make it more prone to noise and ground loops?

Is the noise on the analog wiring side or the encoder side?
Are the original analog cables in use? If yes, those will have an analog ground and a general machine ground, should not be wired together, although i had a single case when it was a must.

From what I've measured, the issue seems to be on the encoder side.

I initially thought that analog ground and power/system ground were connected. The original cables are currently in use. According to the diagrams, the analog signal for the axis is connected to the machine's frame/ground.

Is it better to isolate the analog ground from the system ground? Under what conditions is it strictly necessary to tie both grounds together?