1948021A1 OIS20 Serial Interface Card

Overview

Place of Origin:	Sweden
Brand Name:	ABB
Model Number:	1948021A1
Packaging Details:	Original new Factory Sealed
Delivery Time:	5-7 days
Payment Terms:	T/T
Supply Ability:	In stock

Quick Detail

Description

The ABB 1948021A1 OIS20 Serial Interface Card is designed for industrial automation, offering high-efficiency data transmission capabilities suitable for various complex industrial environments. As a key component of ABB's industrial communication solutions, this module employs a modular design, supports multi-protocol conversion, and can be seamlessly integrated into PROFINET and PROFIBUS dual-protocol network architectures. Its unique anti-interference circuit design ensures stable data transmission performance even in environments with strong electromagnetic interference, making it particularly suitable for harsh operating conditions such as metallurgy, energy, and chemical industries, significantly improving the real-time performance and reliability of industrial control systems.

Applications

The ABB 1948021A1 OIS20 Serial Interface Card is designed for industrial automation, offering high-efficiency data transmission capabilities suitable for various complex industrial environments. As a key component of ABB's industrial communication solutions, this module employs a modular design, supports multi-protocol conversion, and can be seamlessly integrated into PROFINET and PROFIBUS dual-protocol network architectures. Its unique anti-interference circuit design ensures stable data transmission performance even in environments with strong electromagnetic interference, making it particularly suitable for harsh operating conditions such as metallurgy, energy, and chemical industries, significantly improving the real-time performance and reliability of industrial control systems.

Competitive Advantage

As the nerve center of an industrial automation system, the ABB 1948021A1 OIS20 Serial Interface Card features an all-metal shielded housing design, is IP67 certified, and can operate stably in extreme temperature ranges from -20°C to +70°C. This module innovatively integrates a dual-channel redundant communication architecture, supporting real-time data mirroring backup. When the primary communication link fails, the system can automatically switch to the backup link within 5ms, ensuring the continuity of industrial production processes. Its compact design (150×100×50mm) is particularly suitable for space-constrained control cabinet installation scenarios, and its modular quick-release structure improves on-site maintenance efficiency by more than 40%.

More information

Q1: What role does the 1948021A1 OIS20 card play in industrial process safety?

A: The 1948021A1 is the operator station interface card (OIS20) for the Bailey INFI 90 system. It acts as a "protocol translator" between the Human-Machine Interface (HMI) and the control bus (Plant Loop). In industrial safety systems, it ensures that operator-issued emergency stop or process adjustment commands are transmitted to the logic controller in real time and without loss. Its highly integrated communication protocol stack effectively filters illegal data packets, preventing system malfunctions caused by external signal interference. It is a core safety barrier maintaining the closed-loop real-time monitoring system in chemical plants and power plants.

Q2: How should maintenance engineers handle OIS20 communication interruptions?

A: For typical faults of the 1948021A1, the following professional diagnostic process is recommended:

LED Status Indicator: Check the error LED on the card panel. If the indicator flashes red, it usually indicates a failure in internal card initialization or an NVRAM storage error.

Serial Port Monitoring: Use a protocol analyzer to check the RS-232/RS-485 ports. The 1948021A1 is often damaged by lightning strikes or external induced surges, resulting in the inability to establish a handshake signal.

Address Jumper Verification: Check the onboard Dip switch (jump) settings. Because the OIS20 has a unique station number within the system, incorrect address configuration can lead to bus conflicts.

Backplane Power Supply Verification: Measure the +5V DC voltage supplied by the system rack. Excessive power supply ripple can cause frequent card restarts or communication packet loss.

Q3: What are the direct benefits of the core functions of the 1948021A1 model for factory operations?

A: High-throughput data interaction: Optimized serial communication baud rate reduces the latency of process variable (PV) refresh on the operator screen, improving response speed to sudden process accidents.

Hardware-level isolation protection: Built-in opto-isolation circuitry prevents electrical noise from the field control loop from entering the host computer system, protecting the expensive industrial PC motherboard.

Long lifespan support: As an extremely robust interface model in the Bailey system, the 1948021A1 supports seamless upgrades from older systems, restoring communication capabilities without rewiring.

Q4: How does the 1948021A1 serial interface card work? A: Its working principle is based on a bidirectional protocol conversion mechanism:

Downlink command conversion: Receives standard asynchronous serial data from the operator station (PC) and packages it into Bailey's proprietary control bus protocol.

Uplink data acquisition: Extracts parameters such as pressure, temperature, and liquid level from the INFI 90 system ring network in real time.

Memory buffer: Utilizes on-chip buffers to manage burst data streams, ensuring no data loss during bus congestion, and pumps the processed information to the HMI interface via the serial interface.

FAQ

Q: What is the ABB 1948021A1?

A: ABB 1948021A1 is an OIS20 Serial Interface Card.

Q: Is this product brand new?

A: Yes, ABB 1948021A1 is brand new, original, unused, and factory sealed.

Q: How are the ABB 1948021A1 packaged?

A: Its packaging generally involves multiple layers of protection to ensure safe transit.

Q: How to check price and availability for ABB 1948021A1?

A: Please contact John Yang for sales at +86-18150117685 or request a quote.