Siemens SIMATIC HMI Mobile Panel 277 RO - 4.4 Connecting the connection box

Mounting and connecting
4.4 Connecting the connection box
Mobile Panel 277 RO
42 Operating Instructions, 10/2015, A5E36824256-AA
Connection sequence
Connect the connection box in the following sequence:
1. Equipotential bonding
2. Supply voltage
NOTICE
Connection sequence
Always follow the correct sequence for connecting the connection box PN Plus. Non-
observance can cause damage to the connection box PN Plus.
4.4.2
Opening and closing the connection box
Follow the instructions below before opening the connection box PN Plus:
NOTICE
Short circuit in the connection box
If a short-circuit occurs in the connection box PN Plus, there is a risk that the function of the
Mobile Panel 277 RO will be impaired.
Take care when working on the opened connection box, that conducting materials, such as
cable remains, do not come into contact with the electrical circuits.
ESD
When working in the open housing, ensure that current-carrying conductors do not come
into contact with electrical circuits.
Note the ESD instructions.
Requirements
● Torx screwdriver, Size 10