HEIDENHAIN TNC 370D - Manual (Page 15)

X44 PLC Power Supply
Terminal Assignment Fuse
1 + 24 Vdc can be switched off via EMERGENCY STOP F 3,15 A
2 + 24 Vdc cannot be switched off via EMERGENCY STOP F 2 A
3 0 V
HEIDENHAIN recommends that you operate the PLC of the LE (and the PL 410B/PL 405B) with a 24 V
control voltage that is generated as per VDE 0551. The control voltage must be smoothed with approx.
150µF / A (at 15 A, this corresponds to a smoothing capacity of 2250 µF), where a minimum capacity of
1000µF (63V) is to be ensured.
The 0 V line of the PLC power voltage must be connected by a grounding line (
Ƴ 6 mm 2 ) with the
central signal ground of the machine.
Supply
voltage Voltage range,
mean dc voltage Max. current consumption
(when half of the outputs
are on simultaneously) Current
consumption
(when half of the
outputs are on
simultaneously)
24 Vdc
EN 61 131-
2: 1994;
VDE 0411 Part
500
Lower limit
19,2 V
- - -
,
Upper limit
30 V
- - -
,
LE 370 D: 2 A
LE 370 D: 48 W
Besides the voltage tolerance, a dc component with a peak value of 5% of the rated voltage is
permissible. The absolute limits lie at 30 V/19.2 V.
Danger to internal components!
Use only original replacement fuses.
3–12 TNC 370 D Mounting and Electrical Installation July 02