Schneider SR2B201FU Zelio Logic Smart Relay 20 I/O

Product Introduction

The Schneider Electric SR2B201FU belongs to the Zelio Logic family of compact smart relays. This versatile controller runs on 100...240 V AC power and provides an all-in-one solution for various automation tasks. It integrates 12 discrete inputs and 8 relay outputs. The built-in local display allows users to monitor system status and modify parameters directly. Additionally, this unit includes a real-time clock for time-based scheduling applications. Furthermore, it supports both ladder programming with up to 240 lines and FBD programming with up to 500 lines.

Technical Specifications

The SR2B201FU delivers robust performance across various control applications.

Discrete Inputs:
This smart relay offers 12 discrete inputs. These inputs accept 100...240 V AC and draw 0.6 mA per channel. The input impedance is 350 kOhm. For state 1, the voltage must be at least 79 V, while state 0 requires 40 V or less. The input frequency range is 47...63 Hz. The current for state 1 is at least 0.17 mA, and for state 0 it is 0.5 mA or less.

Relay Outputs:
The SR2B201FU features 8 relay outputs with NO contacts. Each output handles up to 8 A thermal current. The switching capacity ranges from 10 mA at 12 V up to the full 8 A rating. For AC loads, the output voltage range is 24...250 V AC, while for DC loads it is 5...30 V DC. The electrical durability reaches 500,000 cycles for various load types including AC-12, AC-15, DC-12, and DC-13. The mechanical durability reaches 10,000,000 cycles.

Power Supply:
The Schneider Electric SR2B201FU operates on a 100...240 V AC supply with limits of 85...264 V. The supply frequency is 50/60 Hz. The maximum supply current is 100 mA at 100 V or 50 mA at 240 V without extension modules. Power consumption is 11 VA without extension. The isolation voltage is 1780 V, and it includes protection against terminal inversion.

Clock and Display:
This model includes a built-in real-time clock. The backup time is 10 years at 25 °C. The clock drift is 12 minutes per year at 0...55 °C, or 6 seconds per month at 25 °C. The local display shows system status and allows parameter adjustments.

Programming and Performance

Programming Capabilities:
The SR2B201FU supports ladder programming with 0 to 240 control scheme lines and FBD programming with 0 to 500 lines. The cycle time ranges from 6 to 90 ms depending on program complexity. Users can program and monitor the unit via the local display or through connection tools like SR2USB01 or SR2BTC01.

Memory and Response Times:
This smart relay features a program memory check on each power-up. For relay outputs, the response time from state 0 to state 1 is 10 ms, and from state 1 to state 0 is 5 ms. For discrete inputs in ladder mode, the response time is 50 ms. In FBD mode, it ranges from 50 to 255 ms.

Mechanical and Environmental Specifications

Mounting Options:
Users can mount the SR2B201FU onto a 35 mm DIN rail using the retractable lugs. Alternatively, they can fix it to a panel using screws. The local display faces front for easy viewing.

Environmental Limits:
This module operates in ambient temperatures from -20 to 40 °C in non-ventilated enclosures, or -20 to 55 °C in ventilated conditions. For storage, it withstands -40 to 70 °C. The relative humidity tolerance is 95% without condensation or dripping water. The operating altitude reaches up to 2000 m.

Protection and Certifications:
The Schneider Electric unit carries an IP20 protection rating for the terminal block and IP40 for the front panel. It complies with numerous standards including EN/IEC 61131-2, EN/IEC 61000-6-2, and EN/IEC 61000-6-3. Product certifications include C-Tick, CSA, GL, GOST, and UL. Additionally, it meets EMC directive requirements and low voltage directive specifications.

Electromagnetic Compatibility:
This smart relay demonstrates robust immunity to electrostatic discharge (level 3), fast transients (level 3), and radiated fields. It also complies with class B radiated and conducted disturbance limits according to EN 55022-11 group 1.

Installation Guidelines

Proper installation ensures reliable operation of your Zelio Logic controller.

DIN Rail Mounting:
Secure the SR2B201FU onto a 35 mm DIN rail inside a control cabinet. Use the retractable lugs to lock it in place. Ensure adequate clearance for wiring and airflow.

Power Supply Wiring:
Connect a 100...240 V AC power supply to the designated L and N terminals. Install a 1 A quick-blow fuse or circuit-breaker in the power supply circuit for protection. The SR2B201FU includes protection against terminal inversion.

Extension Module Connection:
This smart relay supports discrete I/O extension modules. When adding extensions, follow the wiring diagram carefully and ensure the total current does not exceed the power supply capacity.

Packaging List

When you receive your Schneider Electric SR2B201FU, the package contains the following items:

• 1 x SR2B201FU Compact Smart Relay

• Removable screw terminal blocks for I/O connections

• Installation and wiring diagram guide

Note: Certificates and warranty documents do not come with the package. All orders ship via FedEx, UPS, or DHL.

Frequently Asked Questions (FAQ)

Q1: What programming software does the SR2B201FU require?
A1: The SR2B201FU supports ladder and FBD programming. Users can program directly through the local display. For PC-based programming, they need the Zelio Soft software and a connection cable like SR2USB01 or SR2BTC01.

Q2: What is the difference between SR2B201FU and SR2A201BD?
A2: The SR2B201FU runs on 100...240 V AC power and includes a built-in clock. The SR2A201BD runs on 24 V DC and does not include a clock. The SR2B201FU also supports FBD programming, while the SR2A201BD only supports ladder programming.

Q3: Can I add expansion modules to this smart relay?
A3: Yes. The Schneider Electric SR2B201FU supports discrete I/O extension modules. You can add up to 20 additional I/O points depending on the specific extension modules you choose.

Q4: Does this unit support analog inputs?
A4: No. This specific model, SR2B201FU, does not include analog inputs. If you need analog capabilities, please consider the SR2B201BD or SR2A201BD models which include 2 analog inputs.

Q5: What type of loads can the relay outputs switch?
A5: The relay outputs on the SR2B201FU switch both AC and DC loads. They handle resistive loads up to 8 A, inductive loads up to 0.9 A at 230 V AC, and DC loads up to 0.6 A at 24 V DC. For inductive DC loads, we recommend using a protection diode across the load to extend relay life.