HEIDENHAIN TNC 426 PB/M Technical Manual page 14

The TNC 426 M offers digital control for up to 5 axes and spindle speeds up
to 12 000 rpm (option: 30 000 rpm). The TNC 430 M offers digital control for
up to six or nine axes and spindle speeds up to 30 000 rpm.
The TNC 426 M, TNC 430 M is designed for connection of a compact or
modular inverter system. Thus, together with HEIDENHAIN motors, a
complete control package including servo drive can be offered (see Technical
Manual "Inverter Systems and Motors").
The TNC 426 CB is the version of the TNC 426 that is equipped with analog
speed command interface and can control machines with up to five axes plus
spindle. The TNC 430 CA also has an analog speed command interface for
machines with up to eight axes plus spindle. A ninth axis can be controlled
with an additional PCB.
2 – 4 HEIDENHAIN Technical Manual TNC 426, TNC 430