Lauda LRZ 918, Operation Manual, Page: 15 / 26

6 Commissioning
6.1 Contact assignment
If you have assembled the cables yourself, please note the following:

Statutory EMC requirements also apply to the cable connec-
tions. Use only shielded connection lines with shielded plugs/
sockets.

Reliably isolate all equipment connected to the extra-low
voltage inputs and outputs according to DIN EN 61140
to safeguard against dangerous contact voltages. For
example, use double or reinforced insulation according to
DIN EN 60730-1 or DIN 60950-1.
Refer to
Ä
Chapter 12 “Accessories” on page 23 for accessory information
on assembling connection cables.
The Pt100 interface is designed as a 4-pin circular connector with screw
plug (LEMO).
Table 1: Contact assignment of Pt100 interface
Contact Function
1 + I (current path)
2 + U (voltage path)
3 - U (voltage path)
4 - I (current path)
Table 2: Circuit diagrams for Pt100 interface, depending on the cable version
2-wire Pt100 3-wire Pt100 4-wire Pt100
Pt100 interface
Fig. 9: Socket / plug contacts
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