Hardinge Lathe CNC Retrofit/Conversion

[m_c]

Have you got a manual for the drive?

potentially 2 wires for a thermistor (which measures 0 Ohms). I tried with a dummy 100 Ohm load

I'm not sure what you mean by this.
Do you mean each wire individually measures 0 ohms but not connected, or they're looped together so both wires appear as 0 ohms at the drive?

[Chaz]

Have you got a manual for the drive?


I'm not sure what you mean by this.
Do you mean each wire individually measures 0 ohms but not connected, or they're looped together so both wires appear as 0 ohms at the drive?

If I measure their 'thermistor' - assuming that's what it is. I get 0 Ohm across it. So it might not be a thermistor but rather a switch that goes open circuit when it gets too hot?

I'm having a problem validating that the wires from the thermistor actually go to the drive. In the manual the one connector that it might go to has the encoder feedback, nothing shown for anything related to the motor.

[Chaz]

This is a newer version of the AC Servo system manual - https://www.machsupport.com/forum/in...0;attach=48294

My paper copy is v 2.5 and is more accurate but its very similar.

[Chaz]

OK, in the manual (page 10) there is the first reference I can see to motor over temp protection. CN2 connector T1 / 0V under extended interface. Assuming Stitch means pin, pin 9 and 13. So 13 is Ground, 9 is T1. Mine doesnt use this CN2, it has a barrel connector but at least there is a reference to it now.

[Chaz]

This manual has different parameters which mine doesnt have. For example, it has E63, Motor overheating protection. I dont seem to have anything like this, mine are Parameter 00 to 91, nothing like this, so this must apply to newer / different servos.

[Chaz]

So here I can define Input Parameters. P23_15 was set to 13 (Overheating) but I set it to 127 (Set to Null). The problem is that in the list below, its only P23_10 to P23_14, Ill double check but I dont believe any of them were set to 13 (Overheating monitor).