Applications

The 520PTD01 circuit board is used for direct connection of PT100 temperature transmitters.

Up to six transmitters can be connected to the board. The measuring range is ± 200 °C.

Special features

Basic checks and calculation-intensive cyclic processing functions are already performed on the module, thus reducing the burden on the communication unit.

Relevant changes are transmitted as events via the WRB I/O bus.

The 6 differential inputs are not isolated from the RTU500 series power supply.

The 520PTD01 converts the analogue signal to 4096 steps (12 bits) and measures 100%.

The differential inputs are protected against static and dynamic overvoltage by protection circuitry. A low-pass filter suppresses non-line frequency AC interference.

Two additional channels are used for automatic zero calibration.

The line frequency is configurable in the configuration tool.

The microcontroller uses these configuration parameters to set up the A/D converter.