simatic s7-300 - megaelektrik.net

SIMATIC S7-300
Digital modules
SM 321 digital input modules
■ Technical specifications (continued)
Sensor
6ES7 321-1EL00-0AA0 6ES7 321-1FF01-0AA0 6ES7 321-1FF10-0AA0
4
Connectable encoders
- 2-wire BEROS Yes Yes Yes
- permissible closed-circuit current
(2-wire BEROS), max.
4 mA 2 mA 2 mA
Status information/
interrupts/ diagnostics
Interrupts
- Interrupts No No No
- Diagnostic interrupt No No No
- Process interrupt No No No
Diagnostics
- Diagnostic functions No No No
Diagnostic display LED
- Status display digital input
(green)
Yes Yes Yes
Insulation
• Insulation tested with 2500 V DC 4000 V DC 1500 V AC
Potentials/ electrical isolation
Digital input functions
- between the channels Yes Yes Yes
- between the channels,
8 2 1
in groups of
- between the channels and the Yes; Optocoupler Yes; Optocoupler Yes; Optocoupler
backplane bus
Dimensions and weight
• Weight, approx. 300 g 240 g 240 g
• Width 40 mm 40 mm 40 mm
• Height 125 mm 125 mm 125 mm
•Depth 120 mm 120 mm 120 mm
4/44 Siemens ST 70 · 2005