2-channel analog input for tight panels
The Siemens 6AG1134-4MB02-2AB0 is a 2-channel analog input module for 4-20 mA current loops, built for the ET 200SP system. It uses a sigma-delta conversion, is short-circuit proof, and supports wire-break detection on the 4-20 mA range only. Rated for -25 to 70 °C operating temperature, so it sits comfortably in warm cabinets alongside drives or transformers. The 15 mm width saves rail space when you need multiple channels. Isochronous mode is supported, and you get group diagnostics, hardware interrupt, and overflow/underflow monitoring. Max cable length is 200 m shielded.
Wiring and integration notes
Power supply is 24 V DC from the backplane bus; draws 1.2 W typical. The module expects backplane bus supply at 10 mA max. Shielded cable run up to 200 m. Wire-break detection works only on 4-20 mA range; for other ranges it must be disabled. Group diagnostics can be enabled or disabled per channel.