Service Manual TNC 407 / TNC 415 - heidenhain - DR. JOHANNES ...

Kundendienst
HEIDENHAIN
DR JOHANNES HEIDENHAIN GmbH
D-83292Traunreut-~(086691 31-O
8. Power Supply
8.1 External Power Supply Requirements
The voltages must correspond to the following definitions:
* Voltages up to 36V :. pen-r
8.1 .I Power Supply
31v
20,4v
U
t
SERVICE MANUAL TNC 407/415
Issue: 01 .oi1995
Page 32
Voltage Range Max. Current
Power Consumption
DC Average Value Consumption
lower limit 1LE415: 1.5A
I approx. 30 W
20.4 .T. LE 407: 1.3 A
1.8A approx. 6 W
if half of the inputs/outputs if approx. II3 of the inputs/
are active simultaneously outputs are active
simultaneouslv
upper limit 21 A approx. 25 W
31 V :.. * if half of the inputs/outputs if approx. l/3 of the inputs/
sible with t < 100 ms.
are active simultaneously outputs are active
simultaneously
1 WPP
lziLz31,5VPP
8.1.2 PLC Power Supply
t
The NC-part of the LE must not be connected to the
control voltage of the machine tool. It requires its own
external power supply generated separately according
to the German Standard VDE 0551:
24 V DC voltage with a permissible AC component
(ripple voltage) of 1.5 Vpp (recommended filtering
capacitor 10 000 uF / 40 V-1.
The PLC-part (PLC inputs and outputs) of the LE and the PL 400 is operated with a control voltage of 24V
(of the machine tool), generated according to VDE 0550 (German Standard).
Superimposed AC voltage components arising from a non-controlled three-phase bridge connection with a
ripple factor of 5% (see German Standard DIN 40110/10.75, section 1.2) are permissible. Thus, the highest
absolute value for the upper voltage limit is 326V; the smallest absolute value for the lower voltage limit
is 185V.
32,6V
31v
20,4V
18,5V
The 0 V line of the PLC power supply must be
connected to the central signal ground of the
machine tool (ground line 0 t 6 mm?