Hurco BMC 30 AP

The encoder is a normal quadrature one with index.
What seems to be the issue with the spindle ? No time to go back a read everything, sorry.

I just don't get a signal from the encoder. the wiring is correct, 5V + are present.
When the spindle is at a standstill I measure 3.76V, I turn the spindle by hand, the voltage goes down to 0V and remains until I stop turning.
If the spindle stop, I measure 3.76V again.
The strange thing is, the "plug" on the cable für the spindle driver no longer has a housing, I think someone has already worked on it.

Change the encoder.
Encoders are sensitive and very important for safety of the machine, so i never bother fixing them.

Yes, I will replace the encoder.
Yasakawa´s price for a new on is 1700€ +vat

I will look for an other one.

5_Zylinder wrote:

Yasakawa´s price for a new on is 1700€ +vat

Been quoted 27000 Euro for a 22 year old PC, 9500 Euro for a robot hard drive, etc, so been there!

is this a Yaskawa S626 spindle drive ?

If so are you getting a "PG" error ?

3 volts to the encoder is not correct. Should be 5 volts. Check the voltage with the encoder unplugged,

Connector 3CN 4.5.6 is +5V and 1.2.3 is 0V this is the connector that goes from the drive to the encoder. If your not getting 5 volts there all the time then there is a power supply problem if there is less than 350mA going to the encoder. It is a 350mA power supply in that drive for the encoder.