[N4NV]

I am trying to get information on an encoder. It is a Heidenhain ERO.
The encoder is marked:
ERO 120 500 F10
iDNr 220 155 10 sNr 1551729.

I looked at Heidenhein's web site with no luck. I have emailed them but they will not be open until Monday and I would like to work on them before then.

I am trying to find out the voltage, count, and current draw.

Thanks

Vince

[F.Sharifi]

Dear N4NV
it must be ERO 1200 series ! - line countfrom 1024 and 2048 for ERO 125 ( TTL) and same for ERO 1285 sinsodual 1vpp .....and 1024-2048-5000 for ERO 1324 (TTL) and ERO 1348 Sin1Vpp.....Mechanical RPM 25000 rpm...supply 5 Vdc.. do you want drawing ?... let me know whats your problems ?

[Mark Troy]

This thread is old, but I can add information so someone that has a similar problem can be more informed.
The Heidenhain ERO 120 is on SEM servo motors. This particular unit is a 500 line count encoder (signified by the "500" after the "ERO 120"). Outputs are far less than 1 V peak to peak. 15-17 micro according to the encoder label. Supply voltage is 5Vdc.
These are not available new from Heidenhain. You would have to contact SEM for replacement options. Of course there is a good company that repairs these routinely that can be found on the internet.