Electrical Connection - Leuze electronic MLC 520 EX Series Original Operating Instructions

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Electrical connection

WARNING
Faulty electrical connection or improper function selection may result in serious injury!
 Only allow competent persons to perform the electrical connection.
 Make certain that the safety sensor is protected against overcurrent.
 For access guarding, activate the start/restart interlock and make certain that it cannot be unlocked
from within the danger zone.
 Select the functions so that the safety sensor can be used as intended (see chapter 2.1).
 Select the safety-relevant functions for the safety sensor (see chapter 4 "Functions").
 Always loop both safety related switching outputs OSSD1 and OSSD2 into the work circuit of the
machine.
 Signal outputs must not be used for switching safety-relevant signals.
DANGER
Faulty electrical connection in potentially explosive areas may result in serious injury!
 Only disconnect the electrical connections of the device while in a voltage-free state.
 Always switch off the voltage supply before disconnecting a connection cable.
 Make certain that all electrical connections are plugged in or protected. To do this, use, e.g., the pro-
vided K-VM12-Ex interlocking guard (see figure 7.1).
 Affix the provided Do not disconnect electrical connection under voltage! stickers in highly visible
locations on the device or near the electrical connection.
NOTICE
SELV/PELV
 Acc. to EN 60204-1, the external power supply must demonstrate the ability to bridge short-term mains
failures of up to 20 ms. The power supply unit must ensure safe mains separation (SELV/PELV) and
a current reserve of at least 2 A.
For special EMC influences, the use of shielded cables is recommended.
Figure 7.1: K-VM12-Ex interlocking guard
Leuze electronic MLC 520 EX
Electrical connection
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