6ES7421-5EH00-0AA0 SM421, 16DI, AC120V,1 COMMON POINT

Product Code: 6ES7421-5EH00-0AA0

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	SIMATIC S7-400, DIGITAL INPUT SM 421, OPTIC. ISOLATED, 16 DI, 120 V AC, WITH 1 COMMON POINT

Supply voltage
Load voltage L1
Rated value (AC)	120 V
permissible range, lower limit (AC)	74 V
permissible range, upper limit (AC)	132 V
Input current
from backplane bus 5 V DC, max.	100 mA
Power losses
Power loss, max.	20 W
Digital inputs
Number of digital inputs	16
Number of simultaneously controllable inputs
all mounting positions
up to 40 °C, max.	16
up to 60 °C, max.	16
Input voltage
Rated value, AC	120 V
for signal "0"	0 to 20 V AC
for signal "1"	74 to 132 V AC
Frequency range	47 bis 63 Hz
Input current
for signal "0", max. (permissible quiescent current)	4 mA; 0 to 4 mA
for signal "1", typ.	6 mA; 6 to 20 mA
Input delay (for rated value of input voltage)
for standard inputs
Parameterizable	Yes
at "0" to "1", min.	2 ms
at "0" to "1", max.	15 ms
Cable length
Cable length, shielded, max.	1000 m
Cable length unshielded, max.	600 m
Encoder
Connectable encoders
2-wire sensor	Yes
Permissible quiescent current (2-wire sensor), max.	4 mA
Galvanic isolation
Galvanic isolation digital inputs
between the channels, in groups of	1
between the channels and the backplane bus	Yes
Isolation
Isolation checked with	1500 V AC
Dimensions
Width	25 mm
Height	290 mm
Depth	210 mm
Weights
Weight, approx.	650 g
Status	Jun 6, 2014