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SIMATIC
S7-1200, Digital I/O SM 1223, 8 DI AC/8 DO RLY, 8 DI 120/230 V AC, 8 DO relay 2 A
General information
Product type designation SM 1223, DI 8×120/230 V AC, 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. 120 mA
Output voltage
Power supply to the transmitters
● present Yes
Power loss
Power loss, typ. 7.5 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
● Type of input voltage AC
● Rated value (AC) 120/230 V AC
● for signal “0” 20 V AC at 1 mA
● for signal “1” 79 V AC 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. 9 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 Yes
Cable length
● shielded, max. 500 m
● unshielded, max. 300 m
Digital outputs
Number of digital outputs 8
● in groups of 4
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” permissible range, max. 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. 8 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
Alarms
● Diagnostic alarm Yes
Diagnostics indication LED
● for status of the inputs Yes
● for status of the outputs Yes
Potential separation
Potential separation digital inputs
● between the channels, in groups of 2
Potential separation digital outputs
● between the channels Relays
● between the channels, in groups of 2
● between the channels and backplane bus 1500 V AC for 1 minute
Permissible potential difference
between different circuits 750 V AC for 1 minute
Degree and class of protection
IP degree of protection IP20
Standards, approvals, certificates
CE mark Yes
CSA approval Yes
UL approval Yes
cULus Yes
FM approval Yes
RCM (formerly C-TICK) Yes
KC approval Yes
Marine approval Yes
Ambient conditions
Free fall
● Fall height, max. 0.3 m; five times, in product package
Ambient temperature during operation
● min. -20 °C
● max. 60 °C; Number of simultaneously activated outputs: 4 (no adjacent points) at 60 °C horizontal or 50 °C vertical, 8 at 55 °C horizontal or 45 °C vertical
● horizontal installation, min. -20 °C
● horizontal installation, max. 60 °C
● vertical installation, min. -20 °C
● vertical installation, max. 50 °C
● 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
● Storage/transport, min. 660 hPa
● Storage/transport, max. 1 080 hPa
Relative humidity
● Operation at 25 ℃ without condensation, max. 95 %
Connection method
required front connector Yes
Mechanics/material
Enclosure material (front)
● Plastic Yes
Dimensions
Width 45 mm
Height 100 mm
Depth 75 mm
Weights
Weight, approx. 230 g
last modified: 06/09/2020
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