simatic s7-300 - megaelektrik.net

SIMATIC S7-400
Digital modules
Digital input SM 421
■ Technical specifications (continued)
5
6ES7 421-
7BH01-0AB0
6ES7 421-
1BL01-0AA0
6ES7 421-
1EL00-0AA0
6ES7 421-
1FH20-0AA0
Input current
- for 0 signal, max (permissible
1.3 mA 0 to 6 mA AC
closed-circuit current)
- for 1 signal, typical 6 mA; to 8 mA 7 mA 2 mA; to 5 mA at 120 V:
AC 10 mA,
DC 1.8 mA
at 230 V:
AC 14 mA,
DC 2 mA
Input delay (at rated value
of the input voltage)
• For standard inputs
- Parameterizable Yes; 0.05 / 0.1 / 0.5 /
3 ms
- Rated value 3 ms 10 / 20 ms 25 ms
Sensor
Connectable encoders
- 2-wire BEROS Yes Yes Yes Yes Yes
- permissible closed-circuit 3 mA 1.5 mA 1 mA 5 mA 2 mA
current (2-wire BEROS), max.
Status information/ interrupts/
diagnostics
Interrupts
- Diagnostic interrupt Yes Yes
- Process interrupt Yes Yes
Diagnostics
- Diagnostics Yes; internal/
external fault
6ES7 421-
7DH00-0AB0
4 mA; to 10 mA
Yes; 0.5 / 3 / 10 / 20
ms
Yes; internal/
external fault
Insulation
• Insulation tested with 500 V DC 500 V DC 1500 V AC 1500 V AC 1500 V AC
Potentials/ electrical isolation
Digital input functions
- between the channels,
in groups of
- between the channels
and the backplane bus
Dimensions and weight
8 32 8 4 1
Yes Yes Yes Yes Yes
• Weight, approx. 600 g 600 g 600 g 650 g 600 g
• Width 25 mm 25 mm 25 mm 25 mm 25 mm
• Height 290 mm 290 mm 290 mm 290 mm 290 mm
•Depth 210 mm 210 mm 210 mm 210 mm 210 mm
5/32 Siemens ST 70 · 2005