Data Sheet

Data sheet 6ES7321-7RD00-0AB0

SIMATIC S7, digital input SM 321, isolated, 4 DI; 24 V DC,

NAMUR/DIN 19234, for signals from the hazardous area,

diagnostics-capable, PTB tested

Supply voltage

Load voltage L+

● Rated value (DC)

24V

● Reverse polarity protection

Yes

Input current

from load voltage L+ (without load), max. 50mA

from backplane bus 5 V DC, max. 80mA

Encoder supply

Type of output voltage via the inputs

Power loss

Power loss, typ. 1.1W

Digital inputs

Number of NAMUR inputs 4

Input voltage

● Rated value (DC)

8.2V; from internal power circuit supply

Input current

6ES7321-7RD00-0AB0 Subject to change without notice

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Data sheet 6ES7321-7RD00-0AB0 SIMATIC S7, digital input SM 321, isolated, 4 DI; 24 V DC, NAMUR/DIN 19234, for signals from the hazardous area, diagnostics-capable, PTB tested Supply voltage Load voltage L+ ● Rated value (DC) 24 V ● Reverse polarity protection Yes Input current from load voltage L+ (without load), max. 50 mA from backplane bus 5 V DC, max. 80 mA Encoder supply Type of output voltage via the inputs Power loss Power loss, typ. 1.
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● on wire-break, max. 0.1 mA ● on short-circuit, max. 8.5 mA for NAMUR encoders — for signal "0" 0.35 to 1.2 mA — for signal "1" 2.1 to 7 mA Input delay (for rated value of input voltage) ● Input frequency (with a time delay of 0.1 ms), max. 2 kHz for NAMUR inputs — parameterizable Yes; 0.1 / 0.5 / 3 / 15 / 20 ms (plus 0.25 ms preparation time) Cable length ● unshielded, max.
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● Test number PTB Ex-96.D.2094X Ambient conditions Ambient temperature during operation ● max. 60 °C Connection method required front connector 20-pin Weights Weight, approx.