Siemens SIMATIC ET 200S - Replacing the Terminal Box on the Terminal Module

Installation
4-9
ET 200S Distributed I/O System
EWA-4NEB 780602402-12
Replacing the terminal box on the terminal module
The terminal module is installed, wired, and fitted with an electronic module.
1. Switch off the supply voltage on the terminal module and, if applicable, the
power module.
2. Disconnect the wiring on the terminal module.
3. Simultaneously press the upper and lower release buttons of the electronic
module, and remove it from the terminal module.
4. There is a small opening directly under the slot number label. Push the
screwdriver into this opening diagonally from below, and at the same time pull
the terminal box downward until it stops. Then pull the terminal box upward and
out of the terminal module.
5. Replace the terminal box, and insert the new one into the terminal module from
above (position: see Figure 4-5 Then push the terminal box upward until it
snaps into place.
6. Insert the electronic module in the terminal module.
7. Wire the terminal module.
8. Switch on the supply voltage on the terminal module and, if applicable, the
power module.
4
4
Slot number label
Figure 4-5 Replacing the terminal box on the terminal module