SIMATIC S7-300, DIGITAL MODULE SM 323,
OPTICALLY ISOLATED, 16 DI AND 16 DO,
24V DC, 0.5A, AGGREGATE CURRENT 4A,
1X40 PIN
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. 80 mA
from backplane bus 5 V DC, max. 80 mA
Power losses
Power loss, typ. 6.5 W
Digital inputs
Number/binary inputs 16
Input characteristic curve acc. to IEC 61131, Type 1 Yes
Number of simultaneously controllable inputs
all mounting positions
up to 40 °C, max. 16
up to 60 °C, max. 8
Input voltage
Type of input voltage DC
Rated value, DC 24 V
for signal "0" -30 to +5 V
for signal "1" 13 to 30 V
Input current
for signal "1", typ. 7 mA
Input delay (for rated value of input voltage)
for standard inputs
at "0" to "1", min. 1.2 ms
at "0" to "1", max. 4.8 ms
at "1" to "0", min. 1.2 ms
at "1" to "0", max. 4.8 ms
Cable length
Cable length, shielded, max. 1000 m
Cable length unshielded, max. 600 m
Digital outputs
Number/binary outputs 16
Functionality/short-circuit strength Yes ; Electronic
Response threshold, typ. 1 A
Limitation of inductive shutdown voltage to L+ (-48 V)
Lamp load, max. 5 W
Controlling a digital input Yes
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