Electrical connection
Leuze electronic
MLC 520 EX
32
7
Electrical connection
Figure 7.1: K-VM12-Ex interlocking guard
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.
