6ES5421-8MA11 - Digital Input Module - SIEMENS
This 6ES5421-8MA11 and SIEMENS brand digital input module is an 8-input module for the SIMATIC S5-90U, S5-95U/F, S5-100U range.
24 V DC, 0-5 V, 13-33V, 34 mA.
This SIEMENS module is at your disposal to replace your defective equipment and has a guarantee adapted to your needs.
The digital input modules convert the levels of the external binary signals in the process to the internal signal level of the programmable controller.
The failsafe digital input module contains an integral test circuit. It can be used for safety related applications. For that, the module must be plugged into both sub modules.
All other digital input modules are only approved for non safety related functions.
Green LEDs beside the labelling fields for the indi vidual inputs indicate the signal status.
The modules have mechani cal coding and are plugged onto the bus units. This also establishes the contact to the terminal block for the signal cables. The latter need not be detached when replacing a module (fixed wiring).
The fixed module slot coding does not require an address setter. No address displace ments occur if modules are interchanged or gaps are left between modules.
The digital input module 6ES5 422-8MA11 is addressed like an analog module and can only be plugged into the respective slots.
Siemens is an international group of German origin specializing in high technology and present in the sectors of industry, energy and health. It was founded in 1847 by Werner von Siemens.