Power Supply For Plc Outputs; General - HEIDENHAIN iTNC 530 Service Manual

14.6 Power Supply for PLC Outputs

14.6.1 General

The PLC of the iTNC 530 as well as the PL 410B/PL 405B/PL 510 are powered by the 24 Vdc
control voltage of the machine (in accordance with VDE 0551).
The control voltage must be smoothed with a minimum 1000 µF at a rated current capacity of
150 µF/A. At a current load of 15 A, for example, this corresponds to a capacity of 2250 µF.
EN 61 131-2:1994 permits:
Power If half of the outputs are switched at the same time, the following are the values for power
consumption consumption:
MC 42x(B):
PL 410B:
PL 405B:
PL 510:
Nominal operating MC 422(B):
current per output PL 410B:
PL 405B:
PLD 16-8:
14 – 222
5% alternating voltage component is permissible
Minimum absolute value: 20.4 Vdc
Maximum absolute value: 28.8 Vdc
48 W
Approx. 460 W
Approx. 235 W
Approx. 485 W
0.150 A
2 A (with max. current consumption of 20 A)
2 A (with max. current consumption of 20 A)
2 A
Simultaneity
Total current:
2 outputs with 2 A each
4 outputs with 1 A each
8 outputs with 0.5 A each
Out0 to Out7: £ 4 A
Out0 to Out3: £ 2 A
Out4 to Out7: £ 2 A
HEIDENHAIN Service Manual iTNC 530