General information
Product type designationSM 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 inputs8
in groups of4
Input characteristic curve in accordance with IEC 61131, type 1Yes
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
for standard inputs
— parameterizableYes; 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
— ParameterizableNo
Cable length
shielded, max.500 m
unshielded, max.300 m
Digital outputs
Number of digital outputs8
in groups of8
Short-circuit protectionNo; to be provided externally
Limitation of inductive shutdown voltage totyp. (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 value0.5 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
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 functionYes
Alarms
Diagnostic alarmYes
Diagnoses
Monitoring the supply voltageYes
Diagnostics indication LED
DIAG LEDYes
for status of the inputsYes
for status of the outputsYes
Potential separation digital inputs
between the channels, in groups of4
between the channels and backplane busYes; 707 V DC (type test)
Potential separation digital outputs
between the channels, in groups of8
between the channels and backplane busYes; 707 V DC (type test)
Isolation
Isolation tested with707 V DC (type test)
Degree and class of protection
IP degree of protectionIP20
Standards, approvals, certificates
Siemens Eco Profile (SEP)Siemens EcoTech
CE markYes
CSA approvalNo
UL approvalYes
cULusYes
FM approvalNo
RCM (formerly C-TICK)Yes
KC approvalYes
Marine approvalNo
Ecological footprint
environmental product declarationYes; 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
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 change5°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 60068-2-63.5 mm from 5 - 8.4 Hz, 1g from 8.4 - 150 Hz
Operation, tested according to IEC 60068-2-6Yes
Shock testing
tested according to IEC 60068-2-27Yes; 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 condensationS02: < 0.5 ppm; H2S: < 0.1 ppm; RH < 60 % condensation-free
Connection method
required front connectorNo
Mechanics/material
PlasticYes
Dimensions
Width30 mm
Height125 mm
Depth100 mm
Weights
Weight, approx.170 g