Schneider SR2B201BD Zelio Logic Smart Relay 20 I/O 24V DC

Schneider Electric SR2B201BD Zelio Logic Compact Smart Relay

The SR2B201BD is a compact smart relay from the Schneider Electric Zelio Logic series. It offers 20 I/O points in a small DIN rail housing. However, its real strength lies in simple automation, machine control, and building systems. This controller also combines a real-time clock, LCD display, and 24V DC supply in one unit. Therefore, the SR2B201BD supports ladder and FBD programming for flexible logic design.

Technical Specifications

Measurement Range: Not applicable for this logic controller. Frequency Response: Depends on input signal and program scan. Sensitivity: Defined by IEC 61131-2 Type 1 input thresholds. Linearity: Digital logic, not analog. Resolution: 1 bit per logic state. Temperature Range: -20 to 55 °C. Environmental Tolerance: Designed for industrial control cabinets. Noise Immunity: Meets standard industrial immunity requirements.

Installation Guide

• Mount the SR2B201BD on a 35 mm DIN rail.
• Use a stable 24V DC supply within 19.2 to 30V.
• Connect inputs and relay outputs per local wiring rules.
• Keep wiring away from high power cables.
• Use the LCD and buttons for quick setup.
• Add extension modules for communication needs.

Commissioning and Maintenance

Set the real-time clock before first use. Then download the ladder or FBD program. After that, check all I/O points with the LCD status screen. Meanwhile, inspect relay contacts after heavy switching. Also, clean the front panel with a dry cloth. The SR2B201BD has no user-serviceable parts inside.

Compatibility Notes

The SR2B201BD works with Zelio Logic extension modules. In addition, it supports common 24V DC sensors and relay loads. It also fits standard Schneider Electric Zelio Logic accessories. However, it is not a direct drop-in for other PLC families without wiring review.

Certifications

This model follows Schneider Electric quality standards. Moreover, it meets IEC 60947-5-1 for relay output life. It also complies with IEC 61131-2 for digital inputs. Still, contact us for the latest certificate files.

Packing List

• 1 × Schneider Electric SR2B201BD smart relay
• 1 × Quick start guide
• Protective packaging

Shipping and Warranty

We ship by FedEx, UPS, and DHL. Each order includes a 12-month warranty. Moreover, we test and verify the unit before dispatch. Therefore, contact us for stock and lead time.

Typical Applications

• Small machine control
• Lighting and building automation
• Pump and fan logic
• Door and gate control
• Simple process sequencing
• Retrofit of obsolete control systems

Diagnostic Capabilities

The LCD shows I/O status and program steps. Also, the real-time clock supports time-based diagnostics. In addition, extension modules can add communication for remote checks. Thus, relay output life can be estimated from cycle counts.

Why Buy From Oiltech Controls?

• 15+ years in industrial automation spare parts.
• Global shipment support by FedEx, UPS, DHL.
• Tested industrial surplus and refurbished options.
• 12-month warranty on every eligible unit.
• Technical verification before shipment.
• Support for obsolete control systems.

Contact us for inquiries: info@oiltechcontrols.com or +86 158 8020 0923.

FAQ

Q: What is the supply voltage?
A: The SR2B201BD uses 24V DC (19.2 to 30V).

Q: How many relay outputs does it have?
A: It has 8 relay outputs, 5 A each.

Q: Can I program it with ladder logic?
A: Yes. It supports 240 lines ladder or 500 blocks FBD.

Q: Does it have a clock?
A: Yes. It has an integrated real-time clock.

Q: What is the warranty?
A: We offer a 12-month warranty.

Q: How do you ship?
A: We ship by FedEx, UPS, and DHL.

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