Renovating a Hardinge HLV-H

[BillTodd]

Do I really sound like that???

[Jonathan P]

Really good,
have you played with the acceleration + deceleration and found those to be the best match for kindness to the machine vs speed of use. ?

how have you got over the mechanical brake fighting the programmed ramp down time ?

good progress i will post some pictures of mine soon (promise)

Jon:p

[BillTodd]

Really good,
have you played with the acceleration + deceleration and found those to be the best match for kindness to the machine vs speed of use. ?

Acceleration/deceleration times are determined by that required at max speed (which is a pain) Too short and the VFD will trip with an over-current or over-voltage fault. I may look into an external brake resistor for the VFD which should fix the over voltage problem.

I'm having to fight the idea of adding a micro to command the VFD; For a little extra work I could dynamically alter the VFD settings to match the lathe's speed. But, the relays work, so perhaps I'll just live with it the way it is.

how have you got over the mechanical brake fighting the programmed ramp down time ?

I haven't ATM (although, the brake is only applied when the lever is in the stop position) I could easily take a feed from the 0Hz relay and apply the brake only when the motor is at rest (but corks are cheap, so WTH)

good progress i will post some pictures of mine soon (promise)

Jon:p

I'm waiting