Operating instructions

Start-up
Leuze electronic MSI-SR4 10
4 Start-up
4.1 Electrical installation / installation instructions
• The MSI-SR4 is not suitable for free wall mounting and must be installed in a protective housing with
protection rating IP 54/NEMA 3 or higher. Depending on the environmental conditions at the end
user, a suitable protective housing type must be determined and used.
• Connections 13; 14; 23; 24; 33; 34; 41; 42 are equipped with reinforced insulation vis-à-vis the hous-
ing and the other connections (see chapter 3 „Function“). The mixed connection of protective extra
low voltage and low voltage (e.g. 230~) at terminals 13; 14; 23; 24; 33; 34; 41; 42 is not permitted.
• Finger-safe acc. to DIN VDE 0106 part 100, maximum stripped length of the connection cables:
8 mm
• To prevent welding of the output contacts, an external fuse of max. 5 A quick-action or 3.15 A delay-
action must be interposed.
• S33 is not intended for the operation of external devices, rather only for supplying potential-free con-
tacts.
• Shutdown of the supply voltage for operational purposes is to be made impossible.
• Acc. to EN ISO 13849-1: 2009, cables for A2 and S22 are to be laid separately to 0 V.
• The cables at inputs S are to be laid protected , separated from 0V/+24V, and without parallel con-
nection to third components.
• When wiring potential-free contacts at inputs S22, S12, a safety fuse is to be interposed acc. to
DIN EN 50156-1. Observe the operating instructions for the connected components.
4.2 Display and control elements
WARNING
ª Prior to the initial start-up on a power-driven machine, a competent person must inspect the connection
of the connected protective device at the MSI-SR4 as well as the integration of the complete system
in the machine control.
ª Before switching on the supply voltage for the first time, it must be ensured that the outputs of the MSI
have no effect on the machine. The switching elements that ultimately bring the dangerous machine
into motion must be safely switched off or disconnected and protected against being restarted.
ª The same safety measures apply after each function change, after repairs or during maintenance work
WARNING
The general safety notices in Chapter 2 are to be observed.
a = Supply voltage on (green LED)
b = Relay K1 picked up (green LED)
c = Relay K2 picked up (green LED)
d = Restart interlock locked (yellow LED)
K2
22.5
14 24 34 42
S12 A2 S34 S31
Reset
33 41
2313
MSI-SR4
Supply
K1
A1
S35
S33 S22
99.0
113.6
111
a
b
c
d