Zelio Logic SR2B201BD Programmable Smart Relay - 24VDC, 20 I/O (12DI/6AI, 8RO), Integrated Display & Real-Time Clock
The SR2B201BD is a sophisticated compact programmable smart relay from the Zelio Logic range, offering powerful and flexible control solutions for small automation systems. This 24V DC unit features a comprehensive set of 20 I/O points, including 12 discrete inputs (IEC 61131-2 Type 1, resistive) and 8 mechanical relay outputs (normally open, NO type). Additionally, it integrates 6 analog inputs capable of handling 0-10V or 0-24V signals and supports various temperature probes (NTC, KTY, Pt). Designed for ease of use, it includes a local display for direct programming and monitoring, along with an integrated real-time clock for time-based applications. The relay supports both Ladder (up to 240 lines) and FBD (up to 500 lines) programming, ensuring versatility for different control scheme complexities.
The SR2B201BD is built for reliability and performance. It boasts a rapid cycle time of 6 to 90 ms and a robust program memory backup time of 10 years at 77°F (25°C). The discrete inputs feature a high counting frequency of 1 kHz, while the analog inputs offer 8-bit resolution. Its relay outputs provide an 8A thermal current for all outputs combined and exhibit excellent electrical durability, rated for 500,000 cycles under various AC and DC loads. The relay maintains high safety standards with 4 kV rated impulse withstand voltage and provides reverse polarity protection. It operates effectively within an ambient air temperature range of -4°F to 131°F (-20°C to 55°C) and features IP40 protection for the front panel and IP20 for terminals, ensuring resilience in typical industrial environments.
The Zelio Logic SR2B201BD is more than a typical relay; it functions akin to a programmable controller by accepting inputs and providing mechanical relay outputs. It is important to note that this device cannot be directly connected to a network. Because it incorporates features like timers, counters, and a real-time clock that are fully programmable, it serves as an ideal solution for applications where basic relays, timers, or time clocks are insufficient, but the complexity and cost of a full-fledged PLC are not justified. Programming can be conveniently performed directly on the relay via its integrated display or by utilizing the Zelio-Soft software on a Windows-based computer.
- Product Range: Zelio Logic
- Product Type: Compact Smart Relay
- Supply Voltage (Us): 24 V DC (19.2…30 V limits)
- Max Supply Current: 100 mA (without extension)
- Power Dissipation: 6 W (without extension)
- Reverse Polarity Protection: Yes
- Discrete Inputs: 12 (Resistive, 24V DC, 4mA, 1 kHz counting frequency)
- Analog Inputs: 6 (Common mode, 0-24V / 0-10V range, 8-bit resolution)
- Temperature Probe Types Supported: NTC 10k/1000k, KTY81, Pt 500
- Outputs: 8 Mechanical Relay (NO type)
- Output Voltage Limits: 24...250 V AC, 5...30 V DC
- Output Thermal Current: 8 A (for all 8 outputs)
- Electrical Durability (Relay): 500,000 cycles (AC-12 1.5A/230V, AC-15 0.9A/230V, DC-12 1.5A/24V, DC-13 0.6A/24V)
- Mechanical Durability (Relay): 10,000,000 cycles
- Local Display: With
- Clock: With (10-year backup time at 25°C)
- Control Scheme Lines: 0…240 (Ladder), 0…500 (FBD)
- Cycle Time: 6…90 ms
- Response Time (Relay Output): 10 ms (ON), 5 ms (OFF)
- Connections: Screw terminals
- Tightening Torque: 0.5 N.m (4.4 lbf.in)
- Rated Impulse Withstand Voltage (Uimp): 4 kV
- Overvoltage Category: III
- IP Degree of Protection: IP20 (terminal block), IP40 (front panel)
- Ambient Air Temperature for Operation: -4°F to 104°F (-20°C to 40°C) in non-ventilated enclosure; -4°F to 131°F (-20°C to 55°C)
- Ambient Air Temperature for Storage: -40°F to 158°F (-40°C to 70°C)
- Operating Altitude: 2000 m (6561.68 ft)
- Relative Humidity: 95% (without condensation)
- Net Weight: 0.84 lb (0.38 kg)
- Dimensions (H x W x D): 4.906 x 2.343 x 4.236 in (124.6 x 59.5 x 107.6 mm)
- Mounting Style: DIN Rail Mount (35 mm)
- Product Certifications: GOST, UL, CSA, C-tick, GL
- Standards: IEC 61000-4-2/3/4/5/6/11/12, IEC 60068-2-6/27, IEC 61131-2, EN 55022-11
- Country of Origin: FR
- Integrated Control: Compact smart relay with 12 digital inputs, 6 analog inputs, and 8 mechanical relay outputs for diverse applications.
- Onboard Display & Clock: Built-in display for direct programming and monitoring, plus a real-time clock for time-based automation.
- Flexible Programming: Supports both Ladder and Function Block Diagram (FBD) programming languages.
- Robust I/O: High-frequency discrete inputs and versatile analog inputs compatible with various sensors and probes.
- High Durability: Designed for 10 million mechanical cycles and 500,000 electrical cycles on relay outputs.
- Enhanced Protection: Features reverse polarity protection and robust IP40 front panel protection.
- Cost-Effective Automation: Ideal for applications where a PLC is not justified but advanced logic is required.
- Global Compliance: Certified by UL, CSA, CE, GOST, C-tick, and GL, meeting international safety and performance standards.
18 Month Warranty
*Please review our warranty policy here for additional details.