6ES7421-7BH01-0AB0 SM421, 16DI, DC24V, 0.05MS INPUT DELAY

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6ES7421-7BH01-0AB0

		SIMATIC S7-400, DIGITAL INPUT SM 421, GALVANICALLY ISOLATED, 16 DI, 24V DC WITH 0.05 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
● Type of input voltage		DC
● 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
— at "0" to "1", min.		3 µs; 0.05 / 0.1 / 0.5 / 3 ms
Cable length
● Cable length, shielded, max.		1 000 m; 1000 m/3 ms; 70 m/0.5 ms; 30 m/0.1 ms; 30 m/0.05 ms
● Cable length unshielded, max.		600 m; 600 m: 3 ms; 50 m: 0,5 ms; 20 m: 0,1 ms; 20 m: 0,05 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; Parameterizable
● Hardware interrupt		Yes; Parameterizable
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
last modified:		25.09.2014