6ES7321-7EH00-0AB0 SM 321; 16DI, DC 24/125 V

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Product Code: 6ES7321-7EH00-0AB0

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6ES7321-7EH00-0AB0

		SIMATIC S7/PCS 7, SM 321 DIGITAL INPUT, 16 DI, DC 24/125V, 1 X 40-PIN FRONT CONNECTOR WITH WIRE BREAK DIAGNOSIS HARDWARE INTERRUPT DIAGNOSTICS
Supply voltage
Load voltage L+
● Rated value (DC)		24 V
● permissible range, lower limit (DC)		24 V
● permissible range, upper limit (DC)		125 V
Input current
from backplane bus 5 V DC, max.		90 mA
Power losses
Power loss, typ.		2 W; V_in = 24 V DC
Time stamping
Time stamping, supported		Yes
Accuracy		0.1 ms; Use shielded cables and parameterize an input delay of 0.1 ms.
Digital inputs
Number of digital inputs		16
Input characteristic curve in accordance with IEC 61131, type 1		Yes
Number of simultaneously controllable inputs
horizontal installation
— up to 60 °C, max.		16; V_in = 100 V DC
vertical installation
— up to 40 °C, max.		16; V_in = 100 V DC
Input voltage
● Rated value (DC)		24 V; 24 V DC to 125 V DC
● for signal "0"		-146 to 5V
● for signal "1"		15 to 146V
Input current
● for signal "1", typ.		3.5 mA
Input delay (for rated value of input voltage)
for standard inputs
— Parameterizable		Yes; 0.1 / 0.5 / 3 / 15 / 20 ms
Cable length
● Cable length, shielded, max.		1 000 m
● Cable length unshielded, max.		600 m
Encoder
Connectable encoders
● 2-wire sensor		Yes
— Permissible quiescent current (2-wire sensor), max.		1 mA
Isochronous mode
Isochronous operation (application synchronized up to terminal)		No
Interrupts/diagnostics/status information
Alarms
● Diagnostic alarm		Yes; Parameterizable
● Hardware interrupt		Yes; Parameterizable
Diagnostic messages
● Diagnostic functions		Yes; Parameterizable
Diagnostics indication LED
● Group error SF (red)		Yes
● Status indicator digital input (green)		Yes
Galvanic isolation
Galvanic isolation digital inputs
● between the channels		No
● between the channels, in groups of		16
● between the channels and the backplane bus		Yes; Optocoupler
Permissible potential difference
between different circuits		250V AC/300V DC
Isolation
Isolation checked with		3500V DC
Ambient conditions
Operating temperature
● Min.		0 °C
● max.		60 °C
Connection method
required front connector		1x 40-pin
Dimensions
Width		40 mm
Height		125 mm
Depth		120 mm
Weights
Weight, approx.		200 g
last modified:		13.10.2014