Siemens 6ES7321 1BL00 0AA0

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Description

Siemens 6ES7321 1BL00 0AA0 is the digital input Module of SIMATIC S7-300 series Programmable Logic Controller (PLC), The Digital input module SM 321 has Isolated 32 Digital Input (DI), 24 V DC, 1x 40-pole

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Specification of Siemens 6ES7321 1BL00 0AA0

Part number	6ES7321-1BL00-0AA0
Product Description	SIMATIC S7-300, Digital input SM 321,
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 backplane bus 5 V DC, max.	15 mA
Power loss
Power loss, typ.	6.5 W
Digital inputs
Number of digital inputs	32
Input characteristic curve in accordance with IEC 61131, type 1	Yes
Number of simultaneously controllable inputs
horizontal installation
— up to 40 °C, max.	32
— up to 60 °C, max.	16
vertical installation
— up to 40 °C, max.	32
Input voltage
● Type of input voltage	DC 24 V
● Rated value (DC)	-30 to +5 V
● for signal “0”	13 to 30V
● for signal “1”
Input current
● for signal “1”, typ.	7 mA
Input delay (for rated value of input voltage)
for standard inputs
— parameterizable	No
— 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
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
Alarms
● Diagnostic alarm	No
● Hardware interrupt	No
Diagnostics indication LED
● Status indicator digital input (green)	Yes
Potential separation
Potential separation digital inputs
● between the channels	No
● between the channels, in groups of	16
● between the channels and backplane bus	Yes; Optocoupler
Isolation
Isolation tested with	500 V DC
connection method
required front connector	40-pin
Dimensions
Width	40 mm
Height	125 mm
Depth	120 mm
Weights
Weight, approx.	260 g