ABB Binary Input Board 23BE50 for isolated input of 64 groups of 4 process signals

APPLICATIONS

The Binary Input Board 23BE50 is used for the isolated input of 64 process signals divided into 4 groups of up to 16 binary signals each.

The input signals are scanned and processed with a time resolution of up to 1 ms.

The input signals can be assigned to processing functions according to configurable rules. The board 23BE50 can process the following types of signals:

 64 time-stamped single indications

 32 time-stamped dual indications

 8-step position information with 8 bits per step

 8/16-bit digital measurements

 8/16-bit string information

 64 pulse counters (max. 120 Hz)

These modules require the 560PSU40/41 power supply.

Features

All inputs are potentially isolated via optocouplers. If a common loop is required, this can be realized with external shorting connectors, which are included in the delivery.

Typical input current on the inputs is 1.5 mA.

There are 64 LEDs on the board to indicate the signal status. The LEDs are divided into two columns and follow the inputs directly.

The binary input board 23BE50 performs the following processing functions for different types of signals:

 Digital filtering to suppress contact jumping

 Suppression of technically induced chattering signals

 Intermediate position suppression and double indication monitoring

 Consistency check of all binary input channels assigned to digital measurement values

The 23BE50 has a buffer that temporarily stores 247 time-stamped event messages in chronological order, designated for transmission to the communication unit (CMU).

The microcontroller on the board handles all time-critical tasks for the parameterized processing functions.

In addition, it communicates interactively with the RTU560 system bus. All configuration data and processing parameters are loaded from the CMU via the RTU560 bus.

The board is equipped with a serial interface to the RTU560 system bus.

During initialization and operation, the board performs a series of tests. If a fault occurs, it is reported to the communication unit.

All fault conditions affecting the board's functionality are indicated as general fault signals by means of light emitting diodes (ST). Faults in the board are detected by the communication unit.