Overview
The module draws 4.6 W from a 35 V supply, consumes 0.032 A, and has been RoHS compliant since 01-03-08. Its dimensions are 25 mm wide, 290 mm high, and 210 mm deep, weighing 650 g.
Function & operation
This module converts analog signals from thermocouples and other sensors into digital values for the S7-400 backplane. The 8 input channels are individually configurable for different thermocouple types or voltage/current ranges, allowing a single module to handle mixed sensor types on one rack. Parameterizable diagnostics are built in, enabling the CPU to read wire-break, overrange, and underrange conditions per channel. The module supports a 10 Hz integration frequency, suitable for filtering mains-frequency noise in industrial environments.
Applications
Typical installations include furnace temperature monitoring, kiln control, plastic extrusion barrel profiling, and chemical reactor temperature scanning where multiple thermocouples must be read by a single S7-400 rack. The wide range of supported thermocouple types makes it a universal fit for most process temperature loops.