Schneider SR2D101BD Compact Smart Relay

Overview

The Schneider Electric SR2D101BD is a compact smart relay from the Zelio Logic SR2 series, designed for simple yet reliable automation control. Operating on 24 V DC, it offers 6 discrete inputs and 4 relay outputs, providing flexible control for basic automation systems. This model is ideal for compact installations that do not require a display or an internal clock, ensuring cost efficiency and dependable performance.

The SR2D101BD is engineered for industrial environments where precision and simplicity matter most. It supports logic control for lighting systems, pumps, HVAC, and small machinery, making it an ideal choice for OEMs, panel builders, and facility automation projects.

Key Features and Functional Highlights

• Compact design saves panel space and simplifies installation.

• 24 V DC power supply ensures compatibility with industrial control systems.

• 6 digital inputs and 4 relay outputs allow flexible control logic design.

• EEPROM memory provides 10 years of data retention for long-term reliability.

• Reverse polarity protection safeguards against wiring errors.

• DIN rail mounting enables quick integration into standard control panels.

• Programming with Zelio Soft allows easy configuration using ladder logic or function block diagrams.

• High reliability proven through 10 million mechanical cycles and 500,000 electrical cycles.

Technical Specifications

Electrical Characteristics

• Rated Supply Voltage: 24 V DC

• Voltage Range: 19.2 to 30 V DC

• Power Consumption: 3 W (without expansion)

• Maximum Supply Current: 100 mA

• Reverse Polarity Protection: Yes

Inputs

• Number of Inputs: 6 discrete inputs

• Type: Resistive, IEC 61131-2 Type 1

• Input Voltage: 24 V DC

• Input Current: 4 mA

• Counting Frequency: 1 kHz

• Analog Input Option: Inputs IB–IG, 12 kΩ impedance

• Compatible Sensors: 3-wire PNP proximity sensors

Outputs

• Number of Outputs: 4 relay (NO contacts)

• Rated Current: 8 A per output

• Voltage Range: 5–30 V DC or 24–250 V AC

• Switching Capacity: 2000 VA resistive load

• Mechanical Durability: 10 million cycles

• Electrical Durability: 500,000 cycles (AC-12, DC-12)

Mechanical and Environmental

• Mounting: DIN rail

• Display / Clock: None

• Memory Backup: 10 years (EEPROM)

• Operating Temperature: -20°C to +55°C

• Storage Temperature: -40°C to +70°C

• Protection Rating: IP20 (body), IP40 (front)

• Weight: 0.22 kg

• Standards: IEC 61131-2, IEC 60947-5-1, UL, CSA, GL, GOST

Typical Applications

The SR2D101BD is widely used in small automation and control systems where flexibility and reliability are critical. Common applications include:

• Lighting control in industrial or commercial facilities

• Pump management for water and irrigation systems

• HVAC control in building automation

• Simple machinery automation in production lines and packaging systems

• OEM control panels for distributed automation tasks

Reliability and Service

Schneider Electric ensures long-term availability, high-quality components, and compliance with international standards. The SR2D101BD’s EEPROM memory retains programs even after power loss, guaranteeing consistent operation. Moreover, Zelio Soft software simplifies maintenance and logic modification, minimizing downtime and service effort.

FAQ

Q1: Can the SR2D101BD be expanded with additional I/O modules?
Yes, it supports expansion modules from the Zelio Logic SR2/SR3 series for additional inputs and outputs.

Q2: Does this model include a real-time clock or display?
No, the SR2D101BD version does not include a display or clock, making it ideal for basic automation tasks.

Q3: What software is used to program this relay?
The SR2D101BD is programmed using Schneider Zelio Soft software, supporting ladder logic and FBD programming.

Q4: Is the relay suitable for industrial environments?
Yes, it meets IEC 61131-2 and IEC 60947-5-1 standards, ensuring reliable operation in industrial conditions.