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M-LB-(Ex-)2000-System Surge Protection Barriers
Installation
3.2
Connection
Danger!
Explosion hazard from live wiring of non-intrinsically safe circuits
If you connect or disconnect energized circuits in a potentially explosive atmosphere,
sparks can ignite the surrounding atmosphere.
Only connect or disconnect energized non-intrinsically safe circuits in the absence
of a potentially explosive atmosphere.
Danger!
Danger to life from electric shock
Absent or insufficient insulation can result in electric shock.
Only connect circuits that provide protection against electric shock (e. g. SELV or PELV).
3.2.1
Connection of the Circuits
Danger!
Danger to life from incorrect installation
Incorrect installation of cables and connection lines can compromise the function
and the electrical safety of the device.
•
Observe the permissible core cross section of the conductor.
•
When using stranded conductors, crimp wire end ferrules on the conductor ends.
•
Use only one conductor per terminal.
•
When installing the conductors the insulation must reach up to the terminal.
•
Observe the tightening torque of the terminal screws.
Caution!
Property damage from use of inappropriate tool
Using an inappropriate tool may damage the screw heads.
•
Use a slot-head screwdriver with a size of 3.0 x 0.5.
•
Observe the tightening torque of the terminal screws.
The tightening torque is 0.5 Nm to 0.6 Nm.
Connecting the Circuits
1.
Connect the protected signal lines to terminals 4 and 5.
2.
Connect the unprotected signal lines to terminals 2 and 3.
3.
If you do not ground the device via the DIN mounting rail, you can connect the grounding
to terminal 1.
4.
You can connect an optional shielding to terminal 1.
The terminals are screw terminals or spring terminals. See the figures below.
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