6ES7421-7BH00-0AB0 SM421 16DI 24V DC 0,1ms

Product Code: 6ES7421-7BH00-0AB0

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	SIMATIC S7-400, DIG.INPUT MOD. SM 421, OPTIC. ISOLATED, 16 DI, 24V DC WITH 0,1 MS INPUT DELAY, ALARM, DIAGNOSTICS

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.	130 mA
from supply voltage L+, max.	120 mA
Power losses
Power loss, max.	5 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, DC	24 V
for signal "0"	-30 to +5 V DC
for signal "1"	11 to 30 V DC
Input current
for signal "1", typ.	6 mA; 6 to 8 mA
Input delay (for rated value of input voltage)
for standard inputs
Parameterizable	Yes; 0.1 / 0.5 / 3 ms
Cable length
Cable length, shielded, max.	1000 m; 1000 m/3 ms; 70 m/0.5 ms; 30 m/0.1 ms
Cable length unshielded, max.	600 m; 600 m: 3 ms; 50 m: 0,5 ms; 20 m: 0,1 ms
Encoder
Connectable encoders
2-wire sensor	Yes
Permissible quiescent current (2-wire sensor), max.	3 mA
Interrupts/diagnostics/status information
Alarms
Diagnostic alarm	Yes
Hardware interrupt	Yes
Diagnostic messages
Diagnostics	Yes; internal/ external fault
Galvanic isolation
Galvanic isolation digital inputs
between the channels, in groups of	8
between the channels and the backplane bus	Yes
Isolation
Isolation checked with	500 V DC
Dimensions
Width	25 mm
Height	290 mm
Depth	210 mm
Weights
Weight, approx.	600 g
Status	Jun 6, 2014