Power Supply; Connecting Cables; Examples Of Connections - Leuze lumiflex Compact C14 Series Connecting And Operating Instructions

5.2

Power Supply

The power supply to transmitter and receiver shall be 24 V DC ± 20 %. The maximum power con-
sumption of COMPACT equipment including 2 x 0.3 A on-load current, amounts to 0.9 A. The power
supply shall meet the requirements of prEN 60204 and exhibit a safe mains separation as well as
bridging short-term mains failures of up 20 ms.
5.3

Connecting Cables

Transmitter and receiver shall be connected to the machinery controls by means of 7-pole connect-
ing cables with a maximum conductor cross-section of 1.0 mm
separate from supply lines. If power circuits and/or interface sources are close by, it might be
necessary to use shielded lines. The screen shall be connected at both ends. For differences in the
potential between switching cabinet and installation location of the COMPACT, the screen can be
connected to the switching cabinet ground over a plastic-foil capacitor in accordance with the
dielectric strength (e. g. x2-capacitors with 47 nF, 250 V AC).
5.4

Examples of Connections

The COMPACT can integrated in a number of ways to the user controls. The COMPACT can be
connected directly to these controls if the safety engineering control system of the machine is
equipped with such disable and surveillance functions as „Start/restart disable" and „Protection
control" necessary for interconnection (see Fig. 18.1, page 68).
If these functions are not included in the machinery controls, then the COMPACT can be connected
either by means of the Modular safety interfaces MSI-SR2/F or MSI-SR2 with the selectable func-
tions "manual start" or "automatic start" can be connected (see Fig. 18.2, page 68). The MSI modular
safety interfaces, such as the MSI m/R, are required in order to perform special functions such as
cyclical control or muting (see Fig. 18.3, page 69). Refer to the appropriate connection and opera-
ting instructions when making the connections.
The following examples of connections demonstrate the principle of the connection of the
COMPACT into the user controller in compliance with Safety Category 4.
Leuze lumiflex
2
. The routing of the cables shall be
COMPACT 67