Brand : Schneider Electric

Item Name : Compact Smart Relay

Model : SR2B121BD

Rated Impulse Withstand Voltage : 4 kV conforming to EN/IEC 60947-1 and EN/IEC 60664-1

Rated Supply Voltage : 24 V DC

Ambient Air Temperature For Storage : -40-70 °C

Connections - Terminals : Screw terminals, 1 x 0.2...1 x 2.5 mm² (AWG 25...AWG 14) semi-solid, screw terminals, 1 x 0.2...1 x 2.5 mm² (AWG 25...AWG 14) solid, screw terminals, 1 x 0.25...1 x 2.5 mm² (AWG 24...AWG 14) flexible with cable end, screw terminals, 2 x 0.2...2 x 1.5 mm² (AWG 24...AWG 16) solid, screw terminals, 2 x 0.25...2 x 0.75 mm² (AWG 24...AWG 18) flexible with cable end

IP Degree Of Protection : IP20 (terminal block) conforming to IEC 60529, IP40 (front panel) conforming to IEC 60529

Mechanical Durability : 10000000 cycles for relay output

Operating Altitude : 2000 m

Output Voltage Limits : 24...250 V AC (relay output), 5...30 V DC (relay output)

Overvoltage Category : III conforming to EN/IEC 60664-1

Pollution Degree : 2 Conforming to EN/IEC 61131-2

Power Dissipation in W : 3 W without extension

Tightening Torque : 0.5 N.m

Certifications : GOST, UL, CSA, C-Tick, GL

Range Of Product : Zelio Logic

Relative Humidity : 95-95 % without condensation or dripping water

Supply Voltage Limits : 19.2-30 V

Contacts Type And Composition : NO for relay output

Number Or Control Scheme Lines : 0-240 with ladder programming, 0-500 with FBD programming

Clock Drift : 12 min/year at 0-55 °C, 6 s/month at 25-25 °C

Immunity To Microbreaks : 1 ms

Discrete Input Current : 4 mA

Current State 1 Guaranteed : >= 1.2 mA (IB...IG used as discrete input circuit), >= 2.2 mA (I1...IA and IH...IR discrete input circuit)

Voltage State 1 Guaranteed : >= 15 V for I1...IA and IH...IR discrete input circuit, >= 15 V for IB...IG used as discrete input circuit

Maximum Supply Current : 100 mA (without extension)

Switching Capacity in mA : >= 10 mA at 12 V (relay output)

Maximum Altitude Transport : 3048 m

Cycle Time : 6-90 ms

Checks : Program memory on each power-up

Disturbance Radiated/conducted : Class B conforming to EN 55022-11 group 1

Output Thermal Current : 8 A for all 4 outputs for relay output

Discrete Input Voltage : 24 V DC

Backup Time : 10 years at 25 °C

Clock : With

Local Display : With

Voltage State 0 Guaranteed : <= 5 V for I1...IA and IH...IR discrete input circuit, <= 5 V for IB...IG used as discrete input circuit

Current State 0 Guaranteed : <= 0.5 mA (IB...IG used as discrete input circuit), <= 0.75 mA (I1...IA and IH...IR discrete input circuit)

Operating Rate in Hz : 0.1 Hz (at Ie) for relay output, 10 Hz (no load) for relay output

Discrete Input Number : 12 conforming to EN/IEC 61131-2 type 1

Temperature Probe Type : NTC 10k at 25 °C, NTC 1000k at 25 °C, KTY81 210/220/221/222/250, Pt 500

Input Compatibility : 3-wire proximity sensors PNP for discrete input

Discrete Input Type : Resistive

Analogue Input Resolution : 8 bits

Analogue Input Number : 4

Analogue Input Type : Common Mode

Repeat Accuracy : +/- 2 % at 55 °C for analogue input circuit

Conversion Error : +/- 5 % at 25 °C for analogue input circuit, +/- 6.2 % at 55 °C for analogue input circuit

LSB Value : 39 mV for analogue input circuit

Reverse Polarity Protection : With

Maximum Permissible Voltage : 30 V for analogue input circuit
Analogue Input Range : 0...10 V, 0...24 V

Conversion Time : Smart relay cycle time for analogue input circuit

Operating Distance : 10 m between stations, with screened cable (sensor not isolated) for analogue input circuit

Counting Frequency : 1 kHz for discrete input

Ambient Air Temperature For Operation : -20-40 °C in non-ventilated enclosure conforming to IEC 60068-2-1 and IEC 60068-2-2, -20-55 °C conforming to IEC 60068-2-1 and IEC 60068-2-2

Standards : EN/IEC 61000-4-12, EN/IEC 61000-4-4 level 3, EN/IEC 61000-4-5, EN/IEC 61000-4-11, EN/IEC 61000-4-2 level 3, EN/IEC 60068-2-6 Fc, EN/IEC 61000-4-6 level 3, EN/IEC 60068-2-27 Ea, EN/IEC 61000-4-3

Environmental Characteristic : EMC directive conforming to EN/IEC 61000-6-2, EMC directive conforming to EN/IEC 61000-6-3, EMC directive conforming to EN/IEC 61000-6-4, EMC directive conforming to EN/IEC 61131-2 zone B, low voltage directive conforming to EN/IEC 61131-2

Input Impedance : 12 kOhm for IB...IG used as analogue input circuit, 12 kOhm for IB...IG used as discrete input circuit, 7.4 kOhm for I1...IA and IH...IR discrete input circuit

Electrical Durability : AC-12: 500000 cycles at 230 V, 1.5 A for relay output conforming to EN/IEC 60947-5-1, AC-15: 500000 cycles at 230 V, 0.9 A for relay output conforming to EN/IEC 60947-5-1, DC-12: 500000 cycles at 24 V, 1.5 A for relay output conforming to EN/IEC 60947-5-1, DC-13: 500000 cycles at 24 V, 0.6 A for relay output conforming to EN/IEC 60947-5-1

Weight : 0.25 kg