Installing and connecting the device
3.3 Connecting the device
SIMATIC IPC377E
32 Operating Instructions, 2017/05, A5E40965249-AA
Risk of lightning strikes
A lightning flash may enter the mains cables and data transmission cables and jump to a
person.
Death, serious injury and burns can be caused by lightning.
Take the following precautions:
• Disconnect the device from the power supply in good time when a thunderstorm is
approaching.
• Do not touch mains cables and data transmission cables during a thunderstorm.
• Keep a sufficient distance from electric cables, distributors, systems, etc.
Connecting the function earth
A connected function earth discharges hazardous electric charges from the metal enclosure.
The current flowing through the function earth when such a fault occurs triggers an upstream
protective device that disconnects the machine from the power supply.
The function earth also improves the discharge of interference generated by external power
cables, signal cables or cables for I/O modules to ground.
The connection for the protective earth is labeled with the following symbol:
Electric shock and risk of fire
High voltage may be present in a defective device, which can cause fire or an electric
shock if touched. Death and serious bodily injury can result.
• Connect the device to the function earth before you put it into operation.
• The FE terminal on the device must be connected to the function conductor of the
control cabinet or system in which the device is installed.
• Never operate the device without function conductor.
• If a device is defective, remove it from operation without delay and label it accordingly.
● T20 screwdriver
● Cable lug for M4
● Function earth with a minimum cross-section of 2.5 mm
2
To Next Page
Loading...
