SR2B121BD Schneider Electric Zelio Logic Compact Smart Relay 12 I/O 24VDC
Manufacturer: Schneider Electric
Product No.: SR2B121BD
Condition： In stock
Product Type: Compact Smart Relay
Product Origin: FR
Payment: T/T, Western Union
Weight: 250g
Shipping port: Xiamen
Warranty: 12 months
Estimate delivery times: 12-26 days (International), 3-6 days (United States).
Return within 30 days of purchase. Duties & taxes are non-refundable.
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**Executive Product Overview**
The SR2B121BD controller stands as a high-performance compact smart relay from the Zelio Logic family. Engineered by Schneider Electric, this unit coordinates small automation systems seamlessly. Panel builders utilize the SR2B121BD for precise logic control and straightforward operator interactions.
**Core Technical Parameters**
| Technical Metric | Engineering Specification |
|---|---|
| Brand | Schneider Electric |
| Model | SR2B121BD |
| Series | Zelio Logic |
| Total I/O Points | 12 discrete points |
| Digital Inputs | 8 inputs (4 configurable as 8-bit analog inputs) |
| Digital Outputs | 4 relay outputs (8 A thermal current rating) |
| Supply Voltage | 24V DC (Range: 19.2 to 30V) |
| Memory Capacity | 240 ladder lines / 500 FBD blocks |
| Clock Function | Integrated real-time clock module |
| Display Interface | LCD screen with integrated navigation keypad |
| Mechanical / Electrical Life | 10,000,000 cycles / 500,000 cycles (AC-12) |
| Physical Footprint | 90 x 71.2 x 59.5 mm (DIN rail 35 mm mounting) |
| Net Weight | 0.25 kg |
**System Installation and Physical Setup**
- Snap the SR2B121BD directly onto standard 35 mm DIN rails inside control enclosures.
- Ensure adequate surrounding clearance to maintain optimal operating temperatures between -20°C and 55°C.
- Connect secure 24V DC power to designated terminal blocks while respecting polarity.
- Verify communication expansion ports before mounting side-car extension modules.
**Diagnostic Capabilities and Error Handling**
- Monitor active I/O status directly through the onboard LCD display panel.
- Diagnose program execution errors and peripheral faults using real-time status indicators.
- Track hardware operating cycles to predict relay wear before failure occurs.
- Analyze analog input scaling anomalies using built-in software debugging tools.
**Compatible Equipment and Typical Application Scenarios**
- Ideal for small HVAC control panels, lighting automation systems, and pump skids.
- Compatible with Zelio Soft programming software and extension communication modules.
- Integrates smoothly with standard industrial sensors, pushbuttons, and pilot lights.
- Deploys effectively in simple packaging machinery and conveyor sorting lines.
**Global PLC Spare HUB's Insight**
Our automation engineering team deployed the SR2B121BD in a remote water booster station control panel. The integrated display allowed technicians to modify setpoints on-site without a laptop. Its compact 12 I/O footprint saved vital cabinet space while handling local relay loads reliably.
**Warranty, Packing List and Logistics**
| Logistics Parameter | Service Detail |
|---|---|
| Package Contents | SR2B121BD Smart Relay, documentation sheet |
| Warranty Terms | Comprehensive 12-month replacement warranty |
| Shipping Partners | FedEx, UPS, DHL express delivery services |
| Fulfillment Window | Guaranteed dispatch within 24-48 hours |
**Expert FAQs and Buying Guide**
-
Question: How do I configure the analog inputs on the SR2B121BD?
Answer: Four of the digital inputs can be software-configured as 0-10V analog inputs inside the Zelio Soft environment. -
Question: Can the real-time clock maintain time during a complete power loss?
Answer: Yes, an internal lithium backup cell preserves calendar and time data for extended unpowered periods. -
Question: What communication expansion options exist for this controller?
Answer: You can attach dedicated communication interfaces supporting Ethernet or RS485 networks via the modular port. -
Question: Field Experience Tip: How can I prevent premature relay output failure?
Answer: Always install flyback diodes on DC inductive loads or RC snubbers on AC loads to protect relay contacts. -
Question: Buying Guide: When should I choose the SR2B121BD over larger modular PLCs?
Answer: Choose this compact relay when your application requires under 12 I/O points, local screen monitoring, and tight budget control.
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Q: Are these parts 100% original and new?
A: Yes. Every component is guaranteed to be 100% original, brand-new, and factory-sealed. We also provide a 12-month comprehensive warranty for your peace of mind.
Q: How fast is the shipping to my country?
A: For in-stock items, we offer same-day dispatch. International express shipping (DHL/FedEx/UPS) typically delivers within 3–5 business days worldwide.
Q: Can I get a formal quotation with shipping costs?
A: Absolutely. Our sales team is ready to provide a detailed Proforma Invoice (PI) including the most competitive shipping rates for your location.
Q: Do you offer discounts for bulk orders?
A: We provide volume-based pricing for large projects or multiple-item orders. Please contact us to get our Best Price Guarantee.
12-Month Comprehensive Warranty
Every part supplied by Global PLC Spare Hub is covered by a 12-month warranty from the date of invoice.
- Coverage: Functional defects and hardware failures under normal operating conditions.
- Commitment: We provide immediate repair, replacement, or a full refund for any verified defective components to minimize your operational downtime.
Returns & Exchange Policy
We offer a 30-day return policy to ensure you receive the exact part your system requires.
- Eligibility: Returns are accepted for uninstalled items in their original, factory-sealed packaging.
- RMA Process: Please contact our support team to obtain a Return Merchandise Authorization (RMA) number before shipping.
- Fast Processing: Refunds or exchanges are processed within 3–5 business days after the returned item passes our technical inspection.
Need Technical Assistance?Not sure if this part is compatible with your system? [Consult our Engineers] before purchasing to ensure 100% compatibility.
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