Leuze electronic
MC3x
26
The following must be observed for the current supply of the Safety Relay:
The supply voltage must be 24 V DC (see chapter 13 Technical data ).
Acc. to EN 61558-2-6, the cables at the inputs are to be separated from mains by either a safety iso
-
lating transformer with limited output voltage in the case of failure or by means of appropriate isola
-
tion measures.
The following conditions apply for the electrical connection:
The Safety Relay must be integrated in the control circuit acc. to EN ISO 13849-1/-2:2009.
The cables must be laid separately/in a protected manner, acc. to EN ISO 13849-1/-2:2009.
Shutdown of the supply voltage for operational purposes is not permissible.
If only one sensor is used, the free inputs must be bridged.
It is not permissible to connect the sensor lines in parallel with third-party components.
The mixed connection of protective extra low voltage and low voltage (e.g., 240 V
~
) at terminals 13/
14, 23/24, 31/32 is not permissible.
To prevent welding of the MSI output contacts, an external fuse is required acc. to the technical
specifications of the MSI-MC3x (see chapter 13.3 MSI-MC310 Safety Relay or see chapter 13.4
MSI-MC311 Safety Relay ) and for any other connected components.
The OUT terminal (MSI-310) is not for operating external devices, but is rather intended only for sup
-
plying potential-free contacts.
There are 16 terminals on the Safety Relay for connecting the cables. The connection of the Safety Relay
is divided into sensor groups, additional functions, OSSDs and supply voltage.
Depending on external wiring, dangerous voltages may be present at the switching outputs.
During all work at the electrical system or electronics, make certain that each voltage supply has been
interrupted and protected against being restarted.
Only allow competent persons to perform the electrical connection.
Make certain that supply and signal lines are laid separately from power lines.
Provide appropriate spark extinction for contactors/sequence relays in the cabinet.
Observe the installation and operating information for the products that are to be connected via the
Safety Relay (e.g., drive motors, brakes, etc.).
Activate restart interlock if it is possible to reach or walk behind.
For access guarding, make certain that the restart interlock cannot be unlocked from within the danger
zone but that the danger zone can be viewed from the reset button (RES).
Select the functions so that the Safety Relay is used as intended (see chapter 2.1 Approved purpose
Summary of Contents for MC330-S1x
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