Wye/Delta Connection (Only With Spindle Dsp) - HEIDENHAIN TNC 426 PB/M Technical Manual

Table of Contents

6.12.13 Wye/Delta Connection (Only with Spindle DSP)

You can run the motor in either a wye (Y) or delta (D) connection. The

switchover can be carried out during standstill or with a revolving spindle.

Delta connections enable you to run the motor at higher speeds than wye

connections. Wye connections allow more power at low speeds. The motor

specifications must be saved for wye and delta connections in the list of

asynchronous motors. Machine parameters for current and speed controllers

are available in two settings: Index 0 is for wye connection, Index 1 for delta

connection. You can therefore switch to the optimum setting for the speed:

Activate with Module 9163 the switchover between wye and delta

connections.

As soon as Module 9163 is called, the NC disables the spindle drive and

activates the motor specifications and machine parameters for the selected

connection. You can check this with Module 9162.

After the connection has been changed externally by relay, activate with

Module 9161 the drive release for the main spindle.

Module 9163 Wye/delta connection switchover

B/W/D/K <Axis>

B/W/D/K <Type of connection>

0: Wye connection

1: Delta connection

Error recognition:

Incorrect axis, incorrect type of connection, or missing

motor specifications

HEIDENHAIN Technical Manual TNC 426, TNC 430