Signal Loops Disconnection For Checking - Pepperl+Fuchs M-LB 2000 Series Manual

M-LB-(Ex-)2000-System – Surge Protection Barriers
Installation
3.3

Signal Loops Disconnection for Checking

During commissioning, you can disconnect the signal loops for the following checks.
• Insulation check of the cable on the unprotected side
• Check of the signal loops
Danger!
Explosion hazard from sparking when using operating elements on devices
with equipment protection level Gc
Using operating elements in a potentially explosive atmosphere can cause sparks
that can ignite the surrounding atmosphere.
Only use operating elements (e. g., switch, slider, button, etc.) in the absence
of a potentially explosive atmosphere.
Disconnecting the Signal Loops
Use a suitable screwdriver for disconnecting.
1. Insert the screwdriver (4) into the groove (5) of the disconnect levers.
2. To disconnect the unprotected side on terminal 3, lift disconnect lever 1 (3)
until the lever reaches its end position.
3. To disconnect the protected side on terminal 2, lift disconnect lever 2 (2)
until the lever reaches its end position.
Figure 3.11
1 Device
2 Disconnect lever 2 for terminal 2
3 Disconnect lever 1 for terminal 3
4 Screwdriver
5 Groove
1 2
3
4 5
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