Logic Unit And Plc I/O-Board; Nc Power Supply - HEIDENHAIN TNC 415 Technical Manual

4 Power supply

4.1 Logic unit and PLC I/O-board

LE NC
section
PLC
section
PL 410 B Digital
inputs/out
puts
Analog
inputs
PA 110
1)
Voltage surges up to V
2)
VDE 0160, 5.88 low-voltage electrical separation
3)
VDE 0160, Base insulation

4.1.1 NC power supply

The NC section of the LE must not be supplied
from the machine control voltage supply! It
requires an individual, external and separately
generated supply voltage according to VDE
0160, 5.88 recommendations for low-voltage
separation.
Use 24 V DC with a permissible AC component
of 1.5 V (recommended filter capacitor 10 000
PP
µF/40 V DC).
X31 power supply for NC
Connection terminals
Pin Number Assignment
1 + 24 V DC
2 0 V
3-16 TNC 407/TNC 415
Supply Voltage range
voltage DC average
2)
24 Vdc Lower limit
20.4 V
- - -
3)
24 Vdc Lower limit
1)
31 V
- - -
2)
24 Vdc
3)
24 Vdc
for t < 100 ms are permissible.
- - -
4 Power supply
Max. current
consumption
LE 415: 1.5 A
LE 407: 1.3 A
2 A
when half of the
inputs/outputs
are switched on
simultaneously
20 A
when half of the
inputs/outputs
are switched on
simultaneously
≈ 100 mA
≈ 100 mA
U
24 V
Power
consumption
LE 415: ≈ 36 W
LE 407: ≈ 24 W
≈ 48 W
when half of the
inputs/outputs are
switched on
simultaneously
≈ 480 W
when half of the
inputs/outputs
are switched on
simultaneously
≈ 2.4 W
≈ 2.4 W
1.5 V
pp
t
01.98