IS230SNCIH4A - Digital Input DIN Rail Module

SPECIFICATIONS:

Part Number: IS230SNCIH4A
Manufacturer: General Electric
Series: Mark VIe
Product Type: Digital Input DIN Rail Module
Number of channels: 12
Input Logic Thresholds: < +1VDC
Operating temperature: -35 to 70°C
Size: 33.0 cm high x 17.8 cm
Repair: 3-7 days
Availability: In Stock
Weight: 2 lbs
Country of Origin: United States

FUNCTIONAL DESCRIPTION:

IS230SNCIH4A is a Digital Input DIN Rail Module manufactured and designed by General Electric as part of the Mark VIe Series used in GE Distributed Control Systems. The DIN-170 series consists of robust isolated digital input and output modules specifically designed for industrial automation applications. These modules enable seamless monitoring and control of discrete On/Off signals by interfacing with a central control system, such as a PLC or SCADA, through the Modbus RTU protocol over an RS-485 communication port. Each module in this series features six isolated digital channels, making them suitable for distributed control environments where reliable signal transmission and electrical isolation are critical.

The digital input module is designed to detect the status of external contact closures, switches, or dry contacts. It contains six independent digital inputs, each equipped with an internal pull-up resistor. This feature allows direct connection of mechanical switches or relay contacts without requiring additional components, simplifying installation and reducing wiring complexity. The inputs are protected to handle signals up to ±30VDC without sustaining damage, offering resilience in electrically noisy industrial environments. Logic level recognition is clearly defined, with voltages below +1VDC interpreted as a logic "0" and voltages above +3.5VDC as a logic "1", ensuring accurate digital signal interpretation.

KEY FEATURES AND SPECIFICATIONS:

• Complete Sensor-to-RS-485 Interface: The module offers a fully integrated solution for connecting analog or digital sensors directly to an RS-485 Modbus RTU communication network. It handles signal acquisition, processing, and protocol conversion internally, eliminating the need for additional signal conditioning or interface devices.

• 500V RMS Analog Input Isolation: Electrical isolation of up to 500 volts RMS is provided between the analog input channels and the communication or power circuitry. This ensures protection against ground loops, electrical surges, and signal interference, which are common in industrial environments.

• High 15-Bit Measurement Resolution: The analog input circuitry is designed with a 15-bit resolution analog-to-digital converter (ADC), allowing for precise and accurate data capture over the measurement range. This level of resolution is ideal for applications requiring fine measurement detail and sensitivity.

• Automatic Continuous Self-Calibration: The module features an internal self-calibration routine that runs continuously during operation. This eliminates the need for manual calibration or periodic maintenance, ensuring consistent accuracy and stability over time and across varying environmental conditions.

• User-Programmable Digital Filtering: A built-in digital filter can be configured via software to smooth incoming data and minimize noise, especially useful in electrically noisy environments. The filter parameters can be tuned based on the application's response time and noise tolerance requirements.

• Operates on a +5VDC Power Supply: The device requires a regulated +5VDC power input for operation, making it compatible with many industrial control systems and embedded applications where 5V power is standard.

• Transient Voltage Suppression on RS-485 Lines: The RS-485 communication interface includes built-in transient voltage suppressors to protect against electrostatic discharge (ESD), electrical surges, and other transient events that can occur on communication lines in industrial settings.

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FREQUENTLY ASKED QUESTIONS:

What is the primary function of this module?

This module provides a complete interface between analog sensors or digital inputs and an RS-485 Modbus RTU communication network, allowing remote monitoring and data acquisition in industrial automation systems.

What types of sensors can be connected to this module?

You can connect a variety of analog sensors, such as temperature, pressure, or voltage sensors, as well as dry-contact switches or another discrete input device, depending on the specific model (analog or digital I/O version).

Is the input isolated from the rest of the system?

Yes, the analog inputs are electrically isolated up to 500V RMS from the communication and power circuits. This helps protect against ground loops, surges, and electrical noise.