Embedded HSC CompactLogix question

[ceilingwalker]

Hello all. I am trying to get an encoder connected to an embedded HSC on a 1769-l24er-qbfc1b. This is how I wired it in but it isn't working at all.

 

[Ken Roach]

The encoder input signals gotta have something to be referenced to, so if you're using an independent power supply for the encoder you need to connect its DC COM to [CORRECTION] the A-/B-/Z- terminals.

What power supply voltage does this encoder use ? 5, 9, 15, 24, something else ?

I can't find that specific wiring diagram in my quick search; which document is it from ?

 

[ceilingwalker]

I can't find that specific wiring diagram in my quick search; which document is it from ?

Hello, Ken. It is a discontinued encoder from Dynapar, a 525. I found it on the website and there is a plate on the side of it that shows the same thing. I am using 24VDC. You're right, I have no 0V reference for A, B and Z. I will try that in a little bit. Thank you

 

[ceilingwalker]

Would anyone know if this embedded HSC is capable of more than two encoders? The document shows 4 HSC's but I don't know if that means only 2 encoders or 4 counters? Thank you

 

[ceilingwalker]

The encoder input signals gotta have something to be referenced to, so if you're using an independent power supply for the encoder you need to connect its DC COM to [CORRECTION] the A-/B-/Z- terminals.

What power supply voltage does this encoder use ? 5, 9, 15, 24, something else ?

I can't find that specific wiring diagram in my quick search; which document is it from ?

After connecting the 0V reference to the A-, B- and Z- I am able to see that the encoder is changing states however, it isn't seeing the Z from the encoder and it isn't counting. I have tried several different configurations with the manual for this PLC open but am getting no where fast.

 

[drbitboy]

I can't find that specific wiring diagram in my quick search; which document is it from ?

It may be the first hit here: https://www.google.com/search?q=table+2+a+b+z+cable+accessory+p/n+14004310010

 

[ceilingwalker]

View attachment datasheet-series-525-625-encoders.pdf

 

[drbitboy]

Also this: https://www.google.com/search?q=176...+single-ended+encoder+with+high-speed+diagram

First hit, p. 155: https://literature.rockwellautomati...re/documents/um/1769-um021_-en-p.pdf#page=155

 

[ceilingwalker]

For crying out loud!!!!! I forgot to enable the darned encoder!!! Now I have feedback. I still don't have my Z signal but that isn't end of the world stuff.

 

[drbitboy]

For crying out loud!!!!! I forgot to enable the darned encoder!!! Now I have feedback. I still don't have my Z signal but that isn't end of the world stuff.

LOL.


Btw, the Table 2 does have Function (If Used), so maybe not all encoders have Z?

 

[ceilingwalker]

Btw, the Table 2 does have Function (If Used), so maybe not all encoders have Z?

Yes, that's why I was expecting to see a Z signal however, I guess if were actually there, the PLC would see it. The fact that it doesn't see it tells me maybe this particular encoder doesn't have the Z.....just my guess.

 

[ceilingwalker]

Btw, the Table 2 does have Function (If Used), so maybe not all encoders have Z?

Unfortunately I don't find answers until AFTER I ask questions. Sure enough, I went through the selection guide for the encoder an if the 9th number is a 0 there is NO reference signal. Yup.....mine has a 0 there.