HEIDENHAIN TNC 370 D Technical Information page 42

X23 Power supply at the analog inputs
Terminal
1
2
X19,X20,X21,X22 Connection for Pt 100 on the PL 410 B
Terminal
1
2
3
4
5
Connection to the analog inputs
Connecting cable 2 x 0.14 mm
Connection to the inputs for Pt 100 thermistors
The connection to the Pt 100 thermistors must be arranged as a four-wire circuit.
e.g. PL 410 B X19:
Pt100
July 02
Assignment
+24 Vdc (IEC 742 EN 50 178, 5.88 low-voltage electrical separation)
0 V
Assignment
I + Constant current for Pt 100
U + Measuring input for Pt 100
U – Measuring input for Pt 100
I – Constant current for Pt 100
Shield
2
shielded, max. 50 m.
I+
Measuring input U+
Measuring input U–
I–
Customer´s cable
2
4 x 0.14 mm screened, max 50 m
Mounting and Electrical Installation
1
2
3
4
5
TNC 370 D 3–39