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- Yokogawa
- ALR121-S53
- Serial Communication Module
- Japan
- 126.7 × 32.8 × 130 mm
- 0.3 kg
- Xiamen, China
- New & In Stock
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Yokogawa ALR121-S53 Serial Communication Module
Product Introduction
The Yokogawa ALR121-S53 is a high-performance serial communication module designed to facilitate reliable and efficient data transmission between field devices and the host system in industrial automation environments. As part of Yokogawa’s FA-M3 series of programmable controllers, this module supports robust serial communication protocols such as RS-232C and RS-485, allowing seamless connection with a wide array of smart instruments, controllers, and field I/O.
This module plays a critical role in enabling real-time exchange of data in complex control architectures. Its compact form factor and durable construction make it an ideal choice for use in manufacturing, utilities, process control, and energy sectors, where space-saving design and communication integrity are paramount.
Product Specifications
| Parameter | Value |
|---|---|
| Model | ALR121-S53 |
| Function | Serial Communication Module |
| Supported Protocols | RS-232C, RS-485 |
| Number of Channels | 1 or 2 channels (selectable) |
| Communication Speed | Up to 115.2 kbps |
| Data Format | 7/8 data bits, odd/even/no parity |
| Stop Bits | 1 or 2 |
| Error Detection | Parity and checksum supported |
| Electrical Isolation | Yes, optical isolation |
| Configuration | Software-configurable via programming tool |
| Mounting | DIN-rail compatible |
| Series | FA-M3 Series |
| Brand | Yokogawa |
| Dimensions (W × H × D) | 126.7 × 32.8 × 130 mm |
| Weight | 0.3 kg |
| Operating Temperature | 0°C to 55°C |
| Storage Temperature | -20°C to 70°C |
| Protection Rating | IP20 (cabinet installation) |
Applications
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Factory Automation: Ensures reliable serial connectivity between control systems and legacy field devices.
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Process Control: Ideal for communicating with flowmeters, analyzers, or serial-based PLCs in process industries.
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Building Management Systems (BMS): Facilitates integration with HVAC controllers, access control panels, and metering systems.
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Power and Energy: Enables data acquisition from smart meters and relay protection systems.
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Water and Wastewater: Used for serial communication with remote telemetry units (RTUs) and programmable devices.
Advantages
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Flexible Protocol Support: Supports both RS-232C and RS-485, allowing easy integration with various industrial devices.
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Electrical Isolation: Built-in optical isolation enhances safety and prevents ground loop interference.
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Compact and Lightweight: Saves space in crowded control cabinets without compromising performance.
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Software-Configurable Settings: Simplifies installation and commissioning with intuitive parameter configuration.
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Industrial Grade Durability: Reliable operation in harsh environments with extended temperature support.
Brand Overview
Yokogawa Electric Corporation is a global leader in industrial automation and process control systems. With over a century of innovation, Yokogawa provides highly reliable and precise instrumentation, control platforms, and data acquisition systems used across diverse sectors. The FA-M3 series, which includes the ALR121-S53, is a well-regarded line of modular PLCs known for their fast processing, real-time responsiveness, and open connectivity to field equipment and supervisory systems.
Related Models (Same Series or Category)
| Model | Description | Protocol Support | Dimensions (mm) | Weight |
|---|---|---|---|---|
| ALR121-S51 | RS-232C communication module | RS-232C | 126.7 × 32.8 × 130 | 0.3 kg |
| ALR121-S52 | RS-485 communication module | RS-485 | 126.7 × 32.8 × 130 | 0.3 kg |
| ALR121-S55 | Dual-port RS-232C module | RS-232C x 2 | 126.7 × 32.8 × 130 | 0.3 kg |
| ALR121-S56 | Dual-port RS-485 module | RS-485 x 2 | 126.7 × 32.8 × 130 | 0.3 kg |
| ALR121-DP1 | PROFIBUS-DP communication interface | PROFIBUS-DP | 126.7 × 32.8 × 130 | 0.3 kg |
Popular Models (Same Brand)
| Model | Description | Series | Dimensions (mm) | Weight |
|---|---|---|---|---|
| AIP827 | Analog input module (high-speed) | FA-M3 | 126 × 33 × 130 | 0.3 kg |
| ADV151 | Digital output module (16-points) | FA-M3 | 126 × 33 × 130 | 0.3 kg |
| AMN33 | Pulse input module | FA-M3 | 126 × 33 × 130 | 0.3 kg |
| AIP504 | Analog input module (4 channels) | FA-M3 | 126 × 33 × 130 | 0.3 kg |
| ADV141-S13 | Digital output module (isolated transistor) | FA-M3 | 126 × 33 × 130 | 0.3 kg |
FAQ (Q&A)
Q1: What communication protocols are supported by ALR121-S53?
A1: It supports both RS-232C and RS-485 serial communication standards.
Q2: How is the module mounted?
A2: It is DIN-rail mountable, suitable for standard control panels.
Q3: Can I configure communication parameters via software?
A3: Yes, parameters such as baud rate and parity are set via programming tools.
Q4: Is the module electrically isolated?
A4: Yes, optical isolation is included for safer operations.
Q5: What is the data transmission speed?
A5: Up to 115.2 kbps depending on protocol and configuration.
Q6: Is it suitable for noisy industrial environments?
A6: Yes, it includes isolation and error detection features to ensure reliability.
Q7: What series does this module belong to?
A7: It belongs to Yokogawa’s FA-M3 series.
Q8: Is it suitable for both new and legacy systems?
A8: Yes, it bridges communication between modern controllers and legacy serial devices.
Q9: What is the operating temperature range?
A9: It supports environments from 0°C to 55°C.
Q10: How many serial channels does it offer?
A10: It can be configured for 1 or 2 channels depending on requirements.
Authenticity guarantee
All product specifications are original and authentic imported products. We have an annual sales volume of 300 million yuan, and we only produce original and authentic products. All customers who cooperate with us directly online can enjoy low discounts.
Free warehouse
We have a complete range of product models, 80% of conventional models are in stock, and we have established channels in Asia, Africa, North America, South America, and Europe, effectively shortening the order processing time and satisfying customers in a timely manner.
Technical Team
Fast delivery. Spot goods can be shipped on the same day, and the delivery time transaction is 20% faster than that of peers on average, with a delivery time accuracy rate of 99%.
Thoughtful after-sales service
24-hour after-sales service guarantee team, professional and standardized management service system.