Technical Detail: 6ES7138-4CA01-0AA0
The Siemens 6ES7138-4CA01-0AA0 is a **PM-E Power Module** for the ET 200S distributed I/O system. This module is used to create a new potential group (voltage group) within the ET 200S rack, monitoring the 24 VDC supply voltage for the subsequent electronic modules.
Key Features
- Voltage: 24 V DC.
- Function: Power supervision and fusing.
- Diagnostics: LED indication for voltage presence and fuse failure.
- Fuse: Replaceable glass fuse accessible from the front.
Application
Every ET 200S station requires at least one PM-E to supply power to the I/O modules. Additional PM-E modules (like the **6ES7138-4CA01-0AA0**) are added to segment the load or when the current consumption of the modules exceeds the limit of the previous power segment. It ensures that a short circuit in one group of sensors doesn’t take down the entire I/O rack.
