Technical Specifications
| Parameter | Specification |
|---|---|
| Model | Yokogawa ALR111‑S50 |
| Type | Serial Communication Module (RS‑232C, 2 ports) |
| Interface | RS‑232C |
| Connection Method | Point‑to‑point |
| Transmission Speeds | 1 200 / 2 400 / 4 800 / 9 600 / 19 200 / 38 400 bps |
| Current Consumption | 0.5 A |
| Weight | Approx. 0.3 kg (300 g) |
| External Dimensions | Width ≈ 32.8 mm × Height ≈ 126.7 mm × Depth ≈ 125.5 mm |
FAQ
Q1: What does the suffix “‑S50” in ALR111‑S50 signify?
A1: The suffix “‑S50” indicates a standard version (“S”) of the ALR111 module with no explosion protection (“5”) and the basic type (“0”).
Q2: How many and what type of ports does this module offer?
A2: It provides two RS‑232C ports (D‑sub 9‑pin female × 2) configured for point‑to‑point communication.
Q3: What baud rates are supported by this module?
A3: It supports multiple baud rates: 1 200, 2 400, 4 800, 9 600, 19 200 and 38 400 bps.
Q4: What are the physical size and weight of this module?
A4: The module’s dimensions are about 32.8 mm (width) × 126.7 mm (height) × 125.5 mm (depth), and it weighs approximately 0.3 kg.
Q5: What power supply or current load does this module require?
A5: It draws a current of approximately 0.5 A; the exact voltage requirement aligns with the mounting field control station’s supply.
Q6: Can this module operate in dual‑redundant communication systems?
A6: Yes — the ALR111 supports dual‑redundant communication by installing two of them in adjacent slots, enabling fault‑tolerant communications.
Q7: What types of systems is this module intended for?
A7: It is designed for serial communication in industrial control systems such as DCS setups, enabling connection to subsystems like FA‑M3 or Modbus slaves.
Q8: Where can detailed installation instructions and wiring diagrams be found?
A8: The manufacturer’s hardware specification document for the ALR111 (and ALR121) series provides detailed installation, wiring and mounting guidelines.
