HEIDENHAIN TNC 370 D Technical Information page 15

X44 PLC Power Supply
Terminal Assignment
1 + 24 Vdc can be switched off via EMERGENCY STOP
2 + 24 Vdc cannot be switched off via EMERGENCY STOP
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
central signal ground of the machine.
Supply Voltage range,
voltage mean dc voltage
24 Vdc Lower limit
19,2 V
EN 61 131- Upper limit
2: 1994; 30 V
- - -
VDE 0411 Part
500
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
Max. current consumption
(when half of the outputs
are on simultaneously)
LE 370 D: 2 A
Fuse
F 3,15 A
F 2 A
2
) with the
Current
consumption
(when half of the
outputs are on
simultaneously)
LE 370 D: 48 W
July 02