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SIMATIC S7-300, Digital output SM 322, isolated, 8 DO, 24 V DC, 2A, 1x 20-pole |
Supply voltage |
Load voltage L+ |
● Rated value (DC) |
24 V |
● permissible range, lower limit (DC) |
20.4 V |
● permissible range, upper limit (DC) |
28.8 V |
Input current |
from load voltage L+ (without load), max. |
60 mA |
from backplane bus 5 V DC, max. |
40 mA |
Power loss |
Power loss, typ. |
6.8 W |
Digital outputs |
Number of digital outputs |
8 |
Short-circuit protection |
Yes; Electronic |
● Response threshold, typ. |
3 A |
Limitation of inductive shutdown voltage to |
L+ (-48 V) |
Controlling a digital input |
Yes |
Switching capacity of the outputs |
● on lamp load, max. |
10 W |
Load resistance range |
● lower limit |
12 |
● upper limit |
4 k |
Output voltage |
● for signal "1", min. |
L+ (-0.8 V) |
Output current |
● for signal "1" rated value |
2 A |
● for signal "1" permissible range for 0 to 40 °C, min. |
5 mA |
● for signal "1" permissible range for 0 to 40 °C, max. |
2.4 A |
● for signal "1" permissible range for 40 to 60 °C, min. |
5 mA |
● for signal "1" permissible range for 40 to 60 °C, max. |
2.4 A |
● for signal "1" minimum load current |
5 mA |
● for signal "0" residual current, max. |
0.5 mA |
Output delay with resistive load |
● "0" to "1", max. |
100 ?s |
● "1" to "0", max. |
500 ?s |
Parallel switching of two outputs |
● for uprating |
No |
● for redundant control of a load |
Yes |
Switching frequency |
● with resistive load, max. |
100 Hz |
● with inductive load, max. |
0.5 Hz |
● with inductive load (acc. to IEC 60947-5-1, DC13), max. |
0.5 Hz |
● on lamp load, max. |
10 Hz |
Total current of the outputs (per group) |
horizontal installation |
— up to 40 °C, max. |
4 A |
— up to 60 °C, max. |
4 A |
vertical installation |
— up to 40 °C, max. |
4 A |
Cable length |
● shielded, max. |
1 000 m |
● unshielded, max. |
600 m |
Interrupts/diagnostics/status information |
Alarms |
No |
Diagnostics function |
No |
Alarms |
● Diagnostic alarm |
No |
Diagnoses |
● Wire-break |
No |
● Short-circuit |
No |
● Fuse blown |
No |
● missing load voltage |
No |
Diagnostics indication LED |
● Rated load voltage PWR (green) |
No |
● Fuse OK FSG (green) |
No |
● Status indicator digital output (green) |
Yes; per channel |
Potential separation |
Potential separation digital outputs |
● between the channels |
Yes |
● between the channels, in groups of |
4 |
● between the channels and backplane bus |
Yes; Optocoupler |
Isolation |
Isolation tested with |
500 V DC |
Connection method |
required front connector |
20-pin |
Dimensions |
Width |
40 mm |
Height |
125 mm |
Depth |
120 mm |
Weights |
Weight, approx. |
190 g |