HEIDENHAIN TNC 407 (243 020) Technical Manual - Manual (Page 50)

3-20
TNC 407/TNC 415/TNC 425 4 Power supply 01.98
4.3 Earthing plan
B
2
6mm
2
6mm
2
6mm
SI SI
X6 X4 X3 X2 X1
1 2 3 4 6
+5V
SI
0V
X31
1
2
0V
+24V-
1
+24V-
0V
3 +24V-
0V
X44/1 X44/2 X44/3
+24V- +24V- 0V
1
0
X5
5
X10
X11
X12
X13
X14
X2
X8 X7 X7 X8 X8 X3-X6
X9
8 x 1,2A 8 x 1,2A 8 x 1,2A 7 x 1,2A
1 2 3
0V
X15 - 18
X23
1 2 3 4 5
PT 100
X19 - 22
X47 X1
*)
1
2
2
6mm
VDE 0550
VDE 0551
LE - Power supply
PLC - Power-
supply
Emergency stop
controlled
Unit LE
Power supply
stab. supply
voltages
Insulated
0V
Unit PL 410B
to 2nd PL
Measuring voltage
Emergency Stop
64 Inputs
Selectable
connection
Machine Encoders
Optoc.
*) In order to avoid an earth circuit, the measuring voltage should not be grounded. If it must be
grounded, ensure that the ground line is short and noise immune.