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Siemens 6ES7421-1FH20-0AA0

SIMATIC S7-400, digital input SM 421, isolated 16 DI; UC 120/230V Inputs according to IEC1131-2 Type 2

SiemensMFR # 6ES7421-1FH20-0AA0SKU # CEY-8EF3B03021FC

from backplane bus 5 V DC, max.80 mA

Power loss, typ.12 W

Number of digital inputs16

Type of input voltageAC/DC

Rated value (UC)230 V; 120/230 V UC (47 ... 63 Hz)

for signal "0"0 to 40 V AC/ -40 to +40 V DC

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About This Product

SIMATIC S7-400, digital input SM 421, isolated 16 DI; UC 120/230V Inputs according to IEC1131-2 Type 2

Siemens 6ES7421-1FH20-0AA0

Genuine, certified Siemens product
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Product selection and compatibility support from our technical team
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Quotation and lead time tailored to your request

Specifications

Input current

from backplane bus 5 V DC, max.80 mA

Power loss

Power loss, typ.12 W

Digital inputs

Number of digital inputs16

Input characteristic according to IEC 61131Type 2

Number of simultaneously controllable inputs

Number of simultaneously controllable inputs16

Input voltage

Type of input voltageAC/DC

Rated value (UC)230 V; 120/230 V UC (47 ... 63 Hz)

for signal "0"0 to 40 V AC/ -40 to +40 V DC

for signal "1"74 to 264 V AC; 80 to 264 V DC, -80 to -264 V

Input current

for signal "0", min.0 mA; AC: 0 mA; DC: 0 mA

for signal "0", max. (permissible quiescent current)6 mA; AC: 6 mA; DC: 2 mA

for signal "1", typ.10 mA; at 120 V: 10 mA AC, 1.8 mA DC; at 230 V: 14 mA AC, 2 mA DC

for standard inputs

— at "0" to "1", max.20 ms; AC: 20 ms; DC: 15 ms

— at "1" to "0", max.30 ms; AC: 30 ms; DC: 25 ms

Cable length

shielded, max.1 000 m

unshielded, max.600 m

Connectable encoders

2-wire sensorYes

— permissible quiescent current (2-wire sensor), max.5 mA; AC: 5 mA

Interrupts/diagnostics/status information

Diagnostics functionNo

Diagnostics indication LED

Status indicator digital input (green)Yes

Potential separation digital inputs

between the channelsYes

between the channels, in groups of4

between the channels and backplane busYes

Isolation

Isolation tested with1 500 V AC

Dimensions

Width25 mm

Height290 mm

Depth210 mm

Weights

Weight, approx.650 g

Accessories 1

Genuine accessories that can be used with the Siemens 6ES7421-1FH20-0AA0 motor and are supplied separately are listed below. Click a code to open the accessory page and see the other compatible motors.