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Schneider SR2E121BD Smart Relay Module

Schneider SR2E121BD Smart Relay Module

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Brand:Schneider PLC
Item No.:SR2E121BD
Product Origin:France
Product Dimensions:107.6 × 71.2 × 59.5 mm
Product Weight:0.22 kg
Payment:T/T, Western Union, Credit Card
Goods_stock:15
Shipping Port:Xiamen, China
Lead Time:1-3 Days
Condition:Brand New And Original
Warranty:1 Year
Certificate:COO

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Introduction

The Schneider SR2E121BD Smart Relay Module is a compact programmable controller from the Zelio Logic series, developed for applications requiring reliable automation control in a small footprint. It combines programmable logic functions, relay outputs, integrated clock capability, and memory protection features into a DIN-rail mounted automation solution.

Designed for OEM manufacturers, system integrators, and industrial maintenance teams, the SR2E121BD provides a practical alternative to traditional relay-based control panels. Its flexible programming structure, compact dimensions, and dependable switching performance make it suitable for a wide range of standalone automation tasks.


Technical Specifications

ParameterSpecification
Product TypeCompact Smart Relay Module
Model NumberSchneider SR2E121BD
ManufacturerSchneider Electric
Product FamilyZelio Logic
Power Supply Voltage24 VDC
Supply Voltage Range19.2–30 VDC
Number of Digital Inputs8
Input TypeDiscrete Input
Input Voltage24 VDC
Number of Relay Outputs4
Output TypeRelay
Integrated ClockYes
Local DisplayNo
Programming LanguagesLadder Logic / Function Block Diagram
Ladder Program CapacityUp to 240 lines
FBD Program CapacityUp to 500 blocks
Cycle Time6–90 ms
Memory Backup TimeApprox. 10 years at 25°C
Maximum Supply CurrentApprox. 100 mA
Power DissipationApprox. 3 W
Reverse Polarity ProtectionSupported
Mounting TypeDIN Rail Mount
Operating Temperature-20°C to +55°C
Protection RatingIP20
DimensionsApprox. 107.6 × 71.2 × 59.5 mm
WeightApprox. 0.22 kg


Recommended Companion Models

ModelProduct Name
Schneider SR2E201BDZelio Logic Compact Smart Relay 20 I/O 24 VDC Module
Schneider SR2B121BDZelio Logic Compact Smart Relay 12 I/O 24 VDC Module
Schneider SR3B261BDZelio Logic Modular Smart Relay 26 I/O 24 VDC Module
Schneider SR3XT43BDZelio Logic Discrete Expansion Module

Frequently Selected Alternatives

ModelProduct Name
Schneider SR2D101BDZelio Logic Compact Smart Relay 10 I/O 24 VDC Module
Schneider SR2D201BDZelio Logic Compact Smart Relay 20 I/O 24 VDC Module
Schneider SR2E121BZelio Logic Compact Smart Relay 12 I/O 24 VAC Module
Schneider TM221C16RModicon M221 Compact PLC Controller


Where It Excels in Industrial Use

• Designed for compact automation systems requiring dependable programmable control, integrated timing functions, and flexible relay-based switching.

• Suitable for small machinery, lighting automation, HVAC equipment, pump control, access systems, and OEM devices requiring simple logic management without a full PLC platform.

• Provides an efficient solution for replacing conventional relay circuits with programmable automation, combining control logic, memory functions, and DIN-rail installation in a compact Zelio Logic module. 


Key Strengths at a Glance

• Features a Zelio Logic compact smart relay design with 24 VDC power supply, 8 digital inputs, and 4 relay outputs, providing 12 integrated I/O points for basic automation control.

• Includes an integrated clock function, allowing scheduled operations, time-based switching, and automated sequences without additional timing components.

• Supports ladder logic and function block diagram programming, enabling flexible application development for machine builders and maintenance engineers. 


Technical FAQs

Q1: What is the primary function of the Schneider SR2E121BD?

The Schneider SR2E121BD is a Zelio Logic compact smart relay designed to execute programmable control tasks for small industrial and commercial automation systems.

Q2: Which Schneider Electric product family does the SR2E121BD belong to?

The SR2E121BD belongs to the Schneider Electric Zelio Logic smart relay family, which is designed for simple automation control applications.

Q3: What type of power supply does the SR2E121BD require?

The SR2E121BD operates with a 24 VDC power supply and supports a supply range of approximately 19.2 to 30 VDC.

Q4: How many inputs and outputs are available on the SR2E121BD?

The SR2E121BD provides 8 discrete inputs and 4 relay outputs, offering 12 integrated I/O points for compact automation applications.

Q5: Does the SR2E121BD include a clock function?

Yes, the SR2E121BD includes an integrated clock function that supports scheduled automation operations and time-dependent control sequences.

Q6: What programming methods are supported by the SR2E121BD?

The SR2E121BD supports ladder logic programming and function block diagram programming, allowing engineers to select the most suitable development method for their application.

Q7: What type of outputs are used in the SR2E121BD?

The SR2E121BD uses relay outputs, providing flexible switching capability for various low-power industrial control applications.

Q8: Can the SR2E121BD retain programs after power loss?

Yes, the module includes memory backup capability, allowing stored application programs and data retention during power interruptions.

Q9: Which software is used for configuring the SR2E121BD?

The SR2E121BD can be programmed through Schneider Electric Zelio Soft software, which supports application development, simulation, and program transfer.

Q10: What applications commonly use the SR2E121BD?

The SR2E121BD is commonly applied in compact machines, building automation systems, lighting control equipment, pump applications, and simple industrial monitoring solutions. 


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