Introduction: The Evolution Toward Modular Control
Industrial control panels once required extensive wiring and large relay banks. Over time, engineers demanded compact, programmable alternatives. The SR3B261JD from Schneider Electric answers that demand. It belongs to the Zelio Logic series, a modular smart relay platform. This controller integrates 26 I/O points in a DIN-rail housing. Consequently, it replaces numerous discrete relays with one verified device.
Key Features and Electrical Specifications of the SR3B261JD
The SR3B261JD operates on a 12V DC supply voltage, accepting 10.4 to 14.4V. Its 16 digital inputs include 6 configurable as analog inputs, compliant with IEC 61131-2 Type 1. Additionally, 10 relay outputs handle 5 A per output. The integrated real-time clock enables scheduled operations. An LCD with navigation buttons simplifies on-site programming. For logic storage, the controller provides 240 lines of ladder or 500 FBD blocks.
- Supply voltage: 12V DC (10.4–14.4V)
- Digital inputs: 16 (6 configurable as analog, 12V DC, IEC 61131-2 Type 1)
- Digital outputs: 10 relay, 5 A per output
- Program memory: 240 lines ladder / 500 blocks FBD
- Real-time clock: Integrated
- Display: LCD with navigation buttons
- Mounting: 35 mm DIN rail
- Operating temperature: -20 to 55 °C
- Dimensions (H×W×D): 90 × 124.6 × 59.5 mm
- Weight: 0.30 kg
Reliability and Maintenance Insights for the SR3B261JD
Relay output life is a critical metric. The SR3B261JD offers 10,000,000 mechanical cycles and 500,000 electrical cycles at AC-12, 230V 1.5A per IEC 60947-5-1. Therefore, in high-cycle applications, periodic inspection of relay contacts is prudent. The operating temperature range of -20 to 55 °C suits many industrial environments. However, extreme conditions may affect longevity. Regular visual checks and adherence to the manufacturer's safety manual are recommended. This proactive approach minimizes unplanned downtime.
Applications and Integration
The SR3B261JD excels in small to medium machine control. For example, it can manage conveyor sequencing, pump alternation, or lighting schedules. Its analog-capable inputs allow simple sensor monitoring. Communication occurs via extension modules, enabling integration into larger systems. When connecting to fieldbus networks, an external gateway or connection module may be required. Therefore, confirm cable and gateway compatibility with your supplier. The compact dimensions and DIN-rail mounting simplify panel upgrades.
Product Support and Availability
The SR3B261JD is active in production. For precise matching to your application, contact AutoDCSTech with your exact requirements. Our team provides specialist engineering support to ensure correct integration.
Availability & Condition at AutoDCSTech
| Part Number | SR3B261JD |
|---|---|
| Availability | In Stock |
| Condition | New |
| Warranty | One Year |
| Origin | France |
