Lauda LRZ 927, Operation Manual, Page: 16 / 32

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.
The two variants of contact module differ in the number of inputs and
outputs. Two 3
‑
pin circular connectors and a 15
‑
pin D
‑
Sub socket are used
as connections. The connector can be configured for an external system
according to the contact assignments listed below.
Refer to
Ä
Chapter 12 “Accessories” on page 27 for accessory information
on assembling connection cables.
6.1.1 Contact module with single input and output (NAMUR)
Contact output (connector) and contact input (socket) on the interface
module have a 3
‑
pin connection design.
Fig. 9: Circuit diagram
6.1.2 Contact module with 3 inputs and outputs
The connection on this interface module is designed as a 15
‑
pin D-Sub
socket.
Fig. 11: Circuit diagram
Fig. 8: Output / input contacts
Fig. 10: Socket / plug contacts
V2 Interface module LRZ 927 / 928 16 / 30