SIMATIC S7-300, Digital module SM 327, isolated, 8DI and 8DX, 24 V DC, 0.5 A 1x 20-pole; 8DX by individual channels Can be parameterized as DI or DO

SIMATIC S7-300, Digital module SM 327, isolated, 8DI and 8DX, 24 V DC, 0.5 A 1x 20-pole; 8DX by individual channels Can be parameterized as DI or DO

Category: SIEMENS Simatic Control Systems Available
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Description

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. 20 mA
from backplane bus 5 V DC, max. 60 mA
Power loss
Power loss, typ. 3 W
Digital inputs
Number of digital inputs 8; 8 hard-wired, 8 others individually parameterizable
Input characteristic curve in accordance with IEC 61131, type 1 Yes
Number of simultaneously controllable inputs
horizontal installation
— up to 60 °C, max. 16
vertical installation
— up to 40 °C, max. 16
Input voltage
● Type of input voltage DC
● Rated value (DC) 24 V
● for signal "0" -30 to +5 V
● for signal "1" +15 to +30 V
Input current
● for signal "1", typ. 6 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
● shielded, max. 1 000 m
● unshielded, max. 600 m
Digital outputs
Number of digital outputs 8; can also be parameterized individually as DI
Short-circuit protection Yes
● Response threshold, typ. 1 A
Limitation of inductive shutdown voltage to L+ (-54 V)
Controlling a digital input Yes
Switching capacity of the outputs
● on lamp load, max. 5 W
Load resistance range
● lower limit 48 !&
● upper limit 4 k!&
Output voltage
● for signal "1", min. L+ (-1.5 V)
Output current
● for signal "1" rated value 0.5 A
● for signal "1" permissible range, min. 5 mA
● for signal "1" permissible range, max. 0.6 A
● for signal "0" residual current, max. 0.5 mA
Output delay with resistive load
● "0" to "1", max. 350 µs
● "1" to "0", max. 500 µs
Parallel switching of two outputs
● for uprating No
● for redundant control of a load Yes; only outputs of the same group
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. 3 A
vertical installation
— up to 40 °C, max. 2 A
Cable length
● shielded, max. 1 000 m
● unshielded, max. 600 m
Encoder
Connectable encoders
● 2-wire sensor Yes
— permissible quiescent current (2-wire sensor), max. 1.5 mA
Interrupts/diagnostics/status information
Alarms No
Diagnostics function No
Diagnostics indication LED
● Status indicator digital input (green) Yes
● Status indicator digital output (green) Yes
Potential separation
Potential separation digital inputs
● between the channels No
● between the channels and backplane bus Yes; Optocoupler
Potential separation digital outputs
● between the channels No
● 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. 200 g

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