Technical Specifications
| Parameter | Specification |
|---|---|
| Model | ALR121‑S50 S1 |
| Type | Serial Communication Module (RS‑422/RS‑485, 2‑port) |
| Interface | RS‑422 (point‑to‑point) / RS‑485 (multipoint) |
| Transmission Speeds | 1 200 / 2 400 / 4 800 / 9 600 / 19 200 / 38 400 bps |
| Current Consumption | Approx. 0.5 A |
| External Dimensions | Width ≈ 32.8 mm × Height ≈ 142.9 mm × Depth ≈ 125.5 mm |
| Weight | Approx. 0.34 kg |
FAQ
Q1: What does the “‑S50 S1” designation indicate?
A1: “‑S50” denotes the standard industrial version with dual-port RS‑422/RS‑485 capability, while “S1” indicates a specific revision or updated configuration within the S50 series.
Q2: Which communication standards are supported by ALR121‑S50 S1?
A2: It supports RS‑422 for point‑to‑point and RS‑485 for multipoint serial communication networks.
Q3: What are the supported baud rates?
A3: The module supports 1 200, 2 400, 4 800, 9 600, 19 200, and 38 400 bps, compatible with standard industrial serial devices.
Q4: What are the module’s physical dimensions and weight?
A4: The module measures approximately 32.8 mm wide, 142.9 mm high, 125.5 mm deep, and weighs about 0.34 kg.
Q5: How much current does it draw during normal operation?
A5: The current consumption is roughly 0.5 A under typical operating conditions.
Q6: Can this module be used in redundant communication configurations?
A6: Yes, two modules can be installed in adjacent slots to enable dual-redundant, fault-tolerant communication.
Q7: What types of systems is this module designed for?
A7: It is designed for field control systems and safety control stations requiring robust serial communication with subsystems such as FA‑M3 or Modbus devices.
Q8: Where can detailed installation and wiring instructions be found?
A8: Complete installation, wiring, and configuration guidance is available in the ALR121 series hardware specification and installation manual.
