ABB RXIDK 2H 1MRK000838-HA

Description

Detailed Parameter Table

ABB RXIDK 2H 1MRK000838-HA

Product Introduction

The ABB RXIDK 2H 1MRK000838-HA is a high-performance digital input module designed specifically for integration with ABB’s Relion series of protection and control systems. As a critical interface between field-level digital devices and the central protection unit, it converts discrete signals from sensors, switches, and status indicators into digital data for real-time monitoring and control.

This module features 16 channels capable of handling 24 V DC signals, making it ideal for capturing status information from circuit breakers, isolators, and alarm contacts in power systems. The RXIDK 2H 1MRK000838-HA is engineered to deliver rapid response times (≤1 ms), ensuring that critical signals—such as fault indicators or emergency stop commands—are processed without delay. Its robust isolation and wide operating temperature range make it suitable for harsh electrical environments, from substation switchyards to industrial power distribution systems, where reliability is paramount.

Core Advantages and Technical Highlights

Ultra-fast response

The RXIDK 2H 1MRK000838-HA processes input signals in under 1 ms, a critical feature in power system protection. In a high-voltage substation, this speed ensures that a fault detected by a current sensor triggers an immediate trip signal to the circuit breaker, minimizing damage to equipment and reducing outage durations by up to 30% compared to slower modules.

Enhanced electrical isolation

With 2.5 kV AC isolation between channels and the system, the RXIDK 2H 1MRK000838-HA protects sensitive Relion control units from voltage transients and ground loops. In industrial plants with high electromagnetic interference—such as near large motors or variable frequency drives—this isolation prevents false tripping caused by noise, ensuring stable operation of protection schemes.

Wide environmental tolerance

Operating from -40°C to +70°C, the RXIDK 2H 1MRK000838-HA thrives in extreme conditions. In a remote renewable energy substation exposed to freezing winters and scorching summers, it reliably monitors the status of disconnect switches and battery systems, ensuring continuous communication with the central SCADA system regardless of temperature fluctuations.

Typical Application Scenarios

In a utility substation, the RXIDK 2H 1MRK000838-HA integrates with ABB Relion 615 series protection relays to monitor critical equipment status. Its 16 channels connect to:

Auxiliary switch contacts of 110 kV circuit breakers

Trip coil status indicators

Battery voltage monitoring relays

Alarm contacts from transformer temperature sensors

When a breaker auxiliary switch changes state (e.g., from “closed” to “open”), the module processes the signal in 0.8 ms and transmits it to the protection relay, which updates the substation HMI and triggers appropriate control actions—such as isolating a faulty feeder.

In an industrial power distribution system, the RXIDK 2H 1MRK000838-HA monitors motor control center (MCC) status. It tracks the “running” and “fault” contacts of multiple motor starters, providing real-time data to the plant’s energy management system. During a motor overload, the module rapidly detects the fault contact closure, enabling the Relion relay to log the event and initiate a controlled shutdown, preventing motor damage.

ABB RXIDK 2H 1MRK000838-HA

Related Model Recommendations

RXODK 2H 1MRK000839-HA: Digital output module paired with RXIDK 2H 1MRK000838-HA to provide complete digital I/O functionality in Relion systems.

RCIED 1MRK001059-BA: Communication interface module that enables RXIDK 2H 1MRK000838-HA data to be transmitted via IEC 61850 to SCADA systems.

RXIDK 1H 1MRK000837-HA: 8-channel variant of RXIDK 2H 1MRK000838-HA for smaller systems requiring fewer inputs.

REL615 1MRK002229-BA: Relion protection relay fully compatible with RXIDK 2H 1MRK000838-HA for substation protection applications.

RXIHK 2H 1MRK000840-HA: Analog input module that complements RXIDK 2H 1MRK000838-HA in mixed-signal monitoring systems.

RXIDK 3H 1MRK000841-HA: High-density 32-channel version of RXIDK 2H 1MRK000838-HA for large-scale substation monitoring.

Installation, Commissioning and Maintenance Instructions

Installation preparation: Mount the RXIDK 2H 1MRK000838-HA on a 35 mm DIN rail in a clean, dry enclosure with proper ventilation. Ensure the enclosure is grounded to minimize electrical noise. Use 0.5-1.0 mm² shielded twisted-pair cable for field connections, grounding shields at the module end. Connect 24 V DC power via a 1 A fused circuit, verifying correct polarity. For IEC 61850 systems, configure the module’s IP address and logical node settings using ABB’s PCM600 software before integration.

Maintenance suggestions: Inspect the RXIDK 2H 1MRK000838-HA quarterly for loose terminals or corrosion, especially in humid environments. Clean dust from vents using compressed air to prevent overheating. Test input channels annually by applying a 24 V DC signal and verifying status updates in the Relion HMI. If a channel fails, swap the field device to a spare channel and reconfigure the system. Replace the module if multiple channels malfunction, using only ABB-approved units to maintain IEC 61850 compatibility and protection system integrity.

Service and Guarantee Commitment

The RXIDK 2H 1MRK000838-HA is backed by a 5-year warranty covering defects in materials and workmanship under normal operating conditions. ABB’s power systems technical support team provides specialized assistance for integration with Relion systems, including configuration guidance, firmware updates, and troubleshooting for IEC 61850 communication.

Customers receive access to detailed installation manuals, wiring diagrams, and test procedures specific to the RXIDK 2H 1MRK000838-HA. ABB maintains a global inventory of replacement modules to minimize downtime in critical power systems. Our service network offers on-site commissioning support, ensuring optimal performance and compliance with industry standards throughout the product’s lifecycle.