[rahul.62629]

hi all,


i am trying to interface pulse coder with delta (dvp 28 sv) plc.,, i have Fanuc pulse coder type: A860-0300-T001 2000P ,
also i borrowed a pulse amplifier from my friend to give 24v pulses to plc ,,,

But,,,
Problem is I don't know its pinouts ,, there are some wires soldered with a connector "20-29P male"
please any one tell me that in which fanuc cnc control this particular pulse coder is used

also is this pulse coder is for spindle motor or axis motor,,,,,

if anyone is having pdf files that can help me out then please mail me or provide me a download link.

Thanks.

[Al_The_Man]

This is the usual conn for the 20-29p
Al.

[rahul.62629]

thanks a lot sir

[a67429]

Bump....I have these exact encoders, they are on my axis motors. The only servo that still has its data plate shows it as a Fanuc A06B-0613-B013. A 2000 rpm 56v DC servo. So I presume it would work fine on a spindle motor around that RPM.

Did you get them figured out? I'm looking at retrofitting my mill to PC based control and am wondering if / or what it would take to make these work with a servo drive such as a geko or dugong driver?

Looking at the above file, I take it that our connector is the one outlined on the bottom right of the page? That would make it a 5v encoder correct? I can't make out what the other pins are for, how or which ones would be used with a regular servo drive though because the labeling doesn't mean anything...to me at least.

[Al_The_Man]

The PDF shown is actually for a AC motor as the Cn1-8 are not used on a DC brushed motor.
The usual pin out for the 5M 20-29 etc is
A - PCA CHANNEL B
B - PCB ---------A
C - 5VDC
D - /PCA CHANNEL A COMPLEMENT
E - /PCB
F - PCZ ---------Z MARKER
G - /PCZ---------Z COMPLEMENT
H - SHIELD
J - 5V
K - 5V
N - OV
P - OV
R - OH1
S - OH2
Confirm it by checking shield and OH1/OH2 thermal device if fitted.
The encoder is 5v differential 2000p/rev
Al.

[a67429]

The PDF shown is actually for a AC motor as the Cn1-8 are not used on a DC brushed motor.
The usual pin out for the 5M 20-29 etc is
A - PCA CHANNEL B
B - PCB ---------A
C - 5VDC
D - /PCA CHANNEL A COMPLEMENT
E - /PCB
F - PCZ ---------Z MARKER
G - /PCZ---------Z COMPLEMENT
H - SHIELD
J - 5V
K - 5V
N - OV
P - OV
R - OH1
S - OH2
Confirm it by checking shield and OH1/OH2 thermal device if fitted.
The encoder is 5v differential 2000p/rev
Al.

That's a few more wires than is needed though. Could it just be wired as to a drive with PCA and B acting as they sound to the A+ B+ A- B- inputs on the drive? Does PCZ become the index + and -? Are all three 5v lines needed or can they be tied together? Ov lines are grounded, and OH1 and 2 aren't used?

Would a regular drive even be able to understand the signal once its wired up?

My apologies if this seems overly simple to some, I'm learning as fast as I can....but don't wanna fry these suckers, or replace them if I don't have too.

[Al_The_Man]

The differential output is standard RS420 and is recognized by the majority of drives.
The PCA or B etc is the A+ B+ Z+ with A- B- and Z- being the complements, some drives are single ended however and only accept the A & B, and not the A- B-, in this case they are just left unconnected.
Z is the one per rev marker and is used on sophisticated controllers that can take advantage of it for homing, Generally the likes of Mach just use a home L.S. and the drives receive the encoder and do not recognize the Z, depends on your controller.
OH1 & 2 are used on some fanuc systems where the motor has a over temp switch on the stator, you can omit these.
You can common up the +5 pins and the 0v pins.
Al.

[iyerks]

Dear Rahul

did you manage to get the encoder running ?

I also have the same encoder +motor, 2 nos. 1.5 KW, 6 Nm torque.

regards

Srinivas

hi all,


i am trying to interface pulse coder with delta (dvp 28 sv) plc.,, i have Fanuc pulse coder type: A860-0300-T001 2000P ,
also i borrowed a pulse amplifier from my friend to give 24v pulses to plc ,,,

But,,,
Problem is I don't know its pinouts ,, there are some wires soldered with a connector "20-29P male"
please any one tell me that in which fanuc cnc control this particular pulse coder is used

also is this pulse coder is for spindle motor or axis motor,,,,,

if anyone is having pdf files that can help me out then please mail me or provide me a download link.

Thanks.

[laser-man]

i was learning IT TOO, but till now no answers, maybe you can try to contact the suppliers from China , they may help you some tech supprt,
i find a guy here China professional manufacturer of laser machine and cnc router. , hope can do help to you , good luck.

[rahul.62629]

yes ,,,
pulse coder is working fine,, but my application was diefferent from srvo application ,,,
as i connected that encoder with a rotary table to get indexed at particular position using simple dc chopper drives.
i only used pulses A+,B+ and z pulse along with a homing limit s/w.

[iyerks]

Rahul, can you pls mail me the connection details to the Delta PLC ? My id is [email protected] regards. Srinivasan.

[Japcnc]

I am looking for Fanuc servo amplifier a16b-1200-0670/06a pdf