Applications

The 540CID01 is a module in the RTU540 product family consisting of a communication unit (CMU), a multiple input/output module (IOM) and a galvanically isolated wide-range power supply (IOM).

The 540CID01 is a module in the RTU540 product family consisting of a communication unit (CMU), a multi-input/output module (IOM), and a galvanically isolated wide-range power supply (PSM) in a DIN rail metal housing.

Key tasks include

– Managing and controlling the RTU520 I/O module via the serial I/O bus

– Reading process events from the input modules

– Sending commands to the output www.cniacs.com modules.

– Communication with the control system and the local HMI system via serial and Ethernet interfaces.

– Communicates with sub-RTUs, IEDs, or multimeter devices via serial and Ethernet interfaces.

– Manages the time base of the RTU540 product line station and synchronizes the I/O modules.

– Handles the dialog between the RTU540 product line and a web browser via LAN and USB interfaces.

– Acquisition of 8 analog input signals (mA or V signals) with a fast scan cycle of 100 ms for 2 inputs – Acquisition of 16 digital input signals with a fast scan cycle of 100 ms for 2 inputs

Acquisition of 16 digital input signals, 1 high-speed counter input (max. 16 kHz)

– 8 output contacts (normally open), 1-pole or 2-pole outputs

The device is equipped with a battery-buffered real-time clock (RTC).

The device is available in two versions:

– R0001: Process voltage 24 … 60 V DC

– R0002: Process voltage 110 … 125 V DC 125 V DC

Input/Output Controller (IOC)

The microcontroller on the module handles all key tasks for the parameterized processing functions.

In addition, it communicates interactively with the RTU I/O bus. All configuration data and processing parameters are loaded by the communication unit via the RTU I/O bus.

The binary input unit performs the following processing functions for different types of signals:

– Digital filtering to suppress contact jumps

– Suppression of oscillating signals generated during the process

– Intermediate input state with double indication of validity check and suppression

– Consistency check of all channels assigned to digital measured values or step position information

– Summing of incremental pulses to form a combined total in a 31-bit resolution register.

– Copying of the combined total to a freeze register for data storage

The Binary Output Unit can perform the following processing functions for individual signal types:

– Control command output duration

Command monitor function:

– Output relay check on the module (m out of 8)

– Switching voltage monitoring before and during output (24 V DC coil voltage)

– Command output duration monitoring

The analog input unit performs the following processing functions on the measured values:

– Scan period and line frequency interference suppression

– Zero value monitoring and switching detection

– Smoothing

– Threshold monitoring in absolute or cumulative values

– Periodic transmission and background cycling