SIMATIC S7-1200 G2: SM 1223 digital I/O, 8 DI/8 DO inputs: 8x DI 24 V DC sink/source outputs: 8x DO, 24 V DC 0.5 A, sourcing transistor General information Product type designation SM 1223, DI 8x 24 V DC, DQ 8x 24 V DC 0.5A Supply voltage Rated value (DC) 24 V permissible range, lower limit (DC) 20.4 V permissible range, upper limit (DC) 28.8 V Input current from backplane bus 5 V DC, max. 110 mA Digital inputs ● from load voltage L+ (without load), max. 4.1 mA; per channel Digital outputs ● from load voltage L+, max. 45 mA Power loss Power loss, typ. 4 W Digital inputs Number of digital inputs 8 ● in groups of 4 Input characteristic curve in accordance with IEC 61131, type 1 Yes Number of simultaneously controllable inputs all mounting positions — up to 40 °C, max. 8 horizontal installation — up to 40 °C, max. 8 — up to 50 °C, max. 8 vertical installation — up to 40 °C, max. 8 Input voltage ● Rated value (DC) 24 V ● for signal “0” 5 V DC or 0.5 mA ● for signal “1” 15 V DC at 2.5 mA Input current ● for signal “0”, max. (permissible quiescent current) 1 mA ● for signal “1”, min. 2.5 mA ● for signal “1”, typ. 4.1 mA Input delay (for rated value of input voltage) for standard inputs — Parameterizable Yes; 0.2 ms, 0.4 ms, 0.8 ms, 1.6 ms, 3.2 ms, 6.4 ms and 12.8 ms, selectable in groups of four for interrupt inputs — Parameterizable No Cable length ● shielded, max. 500 m ● unshielded, max. 300 m Digital outputs Number of digital outputs 8 ● in groups of 8 Short-circuit protection No; to be provided externally Limitation of inductive shutdown voltage to typ. (L+) -40 V, 1 W dissipation Switching capacity of the outputs ● with resistive load, max. 0.5 A ● on lamp load, max. 5 W Output voltage ● Rated value (DC) 24 V ● for signal “0”, max. 0.1 V; with 10 kOhm load ● for signal “1”, min. 20 V DC Output current ● for signal “1” rated value 0.5 A ● for signal “1” permissible range, max. 0.5 A ● for signal “0” residual current, max. 10 µA Output delay with resistive load ● “0” to “1”, max. 50 µs ● “1” to “0”, max. 200 µs Total current of the outputs (per group) horizontal installation — up to 50 °C, max. 2 A; Current per mass Cable length ● shielded, max. 500 m ● unshielded, max. 150 m Interrupts/diagnostics/status information Diagnostics function Yes Alarms ● Diagnostic alarm Yes Diagnoses ● Monitoring the supply voltage Yes Diagnostics indication LED ● DIAG LED Yes ● for status of the inputs Yes ● for status of the outputs Yes Potential separation Potential separation digital inputs ● between the channels, in groups of 4 ● between the channels and backplane bus Yes; 707 V DC (type test) Potential separation digital outputs ● between the channels, in groups of 8 ● between the channels and backplane bus Yes; 707 V DC (type test) Isolation Isolation tested with 707 V DC (type test) Degree and class of protection IP degree of protection IP20 Standards, approvals, certificates Siemens Eco Profile (SEP) Siemens EcoTech CE mark Yes CSA approval No UL approval Yes cULus Yes FM approval No RCM (formerly C-TICK) Yes KC approval Yes Marine approval No Ecological footprint ● environmental product declaration Yes; type 2 acc. to ISO 14021 Global warming potential — global warming potential, (total) [CO2 eq] 40.3 kg — global warming potential, (during production) [CO2 eq] 7.79 kg — global warming potential, (during operation) [CO2 eq] 32.5 kg — global warming potential, (after end of life cycle) [CO2 eq] -0.089 kg Ambient conditions Free fall ● Fall height, max. 0.3 m; five times, in product package Ambient temperature during operation ● horizontal installation, min. -20 °C ● horizontal installation, max. 60 °C; at max. voltages and max. specification ● vertical installation, min. -20 °C ● vertical installation, max. 50 °C; at max. voltages and max. specification ● permissible temperature change 5°C to 55°C, 3°C / minute Ambient temperature during storage/transportation ● min. -40 °C ● max. 70 °C Air pressure acc. to IEC 60068-2-13 ● Operation, min. 540 hPa ● Operation, max. 1 140 hPa ● Storage/transport, min. 540 hPa ● Storage/transport, max. 1 140 hPa Altitude during operation relating to sea level ● Installation altitude, min. -1 000 m ● Installation altitude, max. 5 000 m; Restrictions for installation altitudes > 2 000 m, see manual Relative humidity ● Operation at 25 ℃ without condensation, max. 95 % Vibrations ● Vibration resistance during operation acc. to IEC 60068-2-6 3.5 mm from 5 - 8.4 Hz, 1g from 8.4 - 150 Hz ● Operation, tested according to IEC 60068-2-6 Yes Shock testing ● tested according to IEC 60068-2-27 Yes; IEC 68, Part 2-27 half-sine: strength of the shock 15 g (peak value), duration 11 ms Pollutant concentrations ● SO2 at RH < 60% without condensation S02: < 0.5 ppm; H2S: < 0.1 ppm; RH < 60 % condensation-free
