HEIDENHAIN TNC 306 Technical Manual - Manual (Page 33)

3–18
TNC 416/TNC 406/TNC 306 Power supply 3/99
4.1.1 NC power supply
LE 416
Terminal
X31 Assignment
Protective ground (YL/GN)
U
1
Phase 1 330 Vac to 450 Vac;
U
2
Phase 2 50 to 60 Hz
–U
Z
Do not use
+U
Z
Do not use
LE 406/LE 306
Pin number
X 31 Assignment
1 + 24 V DC
2 0 V
The NC section of the LE must not be supplied
from the control voltage of the machine. It
requires its individual, external and separately
generated supply voltage according to
VDE 0551. Use 24 V DC with a permissible AC
component of 1.5 Vpp (recommended filter
capacitor 10 000 µF/40 V DC).
24 V
U
t
1.5 V
pp