SIMATIC S7-1200 G2: SM 1223 digital I/O, 8 DI/8 RLY; inputs: 8x DI 24 V DC sink/source; outputs: 8x DO relay 2 A General information Product type designation SM 1223, DI 8x 24 V DC, DQ 8x relay 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. 105 mA Digital inputs ● from load voltage L+ (without load), max. 4.1 mA; per channel Digital outputs ● from load voltage L+, max. 9 mA; per relay coil Power loss Power loss, typ. 4.8 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 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 Switching capacity of the outputs ● with resistive load, max. 2 A ● on lamp load, max. 30 W with DC, 200 W with AC Output voltage ● Rated value (DC) 5 V DC to 30 V DC ● Rated value (AC) 5 V AC to 250 V AC Output current ● for signal “1” rated value 2 A Output delay with resistive load ● “0” to “1”, max. 10 ms ● “1” to “0”, max. 10 ms Total current of the outputs (per group) horizontal installation — up to 50 °C, max. 16 A; Current per mass Relay outputs ● Number of relay outputs 8 ● Rated supply voltage of relay coil L+ (DC) 24 V ● Number of operating cycles, max. mechanically 10 million, at rated load voltage 100 000 Switching capacity of contacts — with inductive load, max. 2 A — on lamp load, max. 30 W with DC, 200 W with AC — with resistive load, max. 2 A 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 ● for status of the inputs Yes ● for status of the outputs Yes ● for maintenance 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 Relays ● between the channels, in groups of 8 ● between the channels and backplane bus Yes; 4 200 V DC (type test) Isolation Isolation tested with 1500 V AC (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 ● min. -20 °C; No condensation ● max. 40 °C; at max. voltages and max. specifications ● horizontal installation, min. -20 °C; No condensation ● horizontal installation, max. 60 °C; at rated voltages, 50 % of max. specification and alternate IO active ● vertical installation, min. -20 °C; No condensation ● vertical installation, max. 50 °C; at rated voltages, 50 % of max. specification and alternate IO active ● 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. 4 000 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 Connection method required front connector No Mechanics/material Enclosure material (front) ● Plastic Yes Dimensions Width 30 mm Height 125 mm Depth 100 mm Weights Weight, approx. 194 g
