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6ES7321-1CH20-0AA0 SM321, 16DI, DC48-125V

Manufacturer:
SIEMENS
Weight:
0.2kg
Product Range:
Automation Systems

Product Information

SIMATIC S7-300, DIGITAL INPUT SM 321, OPTICALLY ISOLATED, 16 DI, DC 48-125V, 1 X 20 PIN
Supply voltage
Load voltage L+
Rated value (DC)48 V
permissible range, lower limit (DC)48 V
permissible range, upper limit (DC)125 V
Input current
from backplane bus 5 V DC, max.40 mA
Power losses
Power loss, typ.4.3 W
Digital inputs
Number/binary inputs16
Input characteristic curve acc. to IEC 1131, Type 1Yes
Number of simultaneously controllable inputs
horizontal installation
up to 50 °C, max.8
up to 60 °C, max.8; 6 to Ue 146 V
vertical installation
up to 40 °C, max.8
Input voltage
Type of input voltageDC
Rated value, DC48 V; 48 to 125 V DC
for signal "0"-146 to +15 V DC
for signal "1"30 to 146 V DC
Input current
for signal "1", typ.3.5 mA
Input delay (for rated value of input voltage)
for standard inputs
ParameterizableNo
at "0" to "1", min.0.1 ms
at "0" to "1", max.3.5 ms
Cable length
Cable length, shielded, max.1000 m
Cable length unshielded, max.600 m
Encoder
Connectable encoders
2-wire BEROSYes
permissible quiescent current (2-wire BEROS), max.1 mA
Isochronous mode
Isochronous modeNo
Interrupts/diagnostics/status information
Alarms
AlarmsNo
Diagnostic alarmNo
Hardware interruptNo
Diagnoses
Diagnostic functionsNo
Diagnostics indication LED
Group error SF (red)No
Status indicator digital input (green)Yes
Galvanic isolation
Galvanic isolation digital inputs
between the channelsNo
between the channels, in groups of8
between the channels and the backplane busYes; Optocoupler
Permissible potential difference
between different circuits146 V DC / 132 V AC
Isolation
Isolation checked with1500 V DC
Connection method
required front connector20-pin
Dimensions
Width40 mm
Height125 mm
Depth120 mm
Weight
Weight, approx.200 g

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