2-channel analog input module (750-461)
The 750-461 I/O module measures resistance at field level or evaluates platinum or nickel resistance sensors. The resistance values are converted into temperature values. A microprocessor in the I/O module linearizes the measured resistance values and converts them into a numeric value proportional to the temperature of the selected resistance sensor

The WAGO-I/O-CHECK commissioning tool can be used to configure the required operating mode. The I/O module can also be parameterized via PROFIBUS and PROFINET device description (GSD file). The parameterization description can be found in the appendix in Section “Configuration and Parameterization via GSD File with PROFIBUS DP and PROFINET IO.”

The module has two input channels allowing the direct connection of two 2- or 3- wire resistance sensors. For example, two 3-wire sensors can be connected either to +R1, RL1 and −R1 or to +R2, RL2 and −R2.

Each input channel of a module has a shield (screen) connection (S). The shield connection is fed directly to the carrier rail and contact is made automatically by snapping the module onto the rail.

This analog input module directly connects to Pt resistance sensors. Two- or three-wire sensors can be connected. The module automatically linearizes the entire temperature range. A sensor error (short circuit, line break or measurement range overflow) is indicated by a red LED.A green LED indicates readiness for operation and error-free communication with the coupler. The shield directly connects to the DIN-rail.
Technical data