Number of inputs 32
Cable length
● unshielded
Maximum 600 m
● shielded
max. 1000 m
Voltage, current and potential
Rated supply voltage of electronics L+ Not required
Number of inputs that can be enabled simultaneously 32
Electrical isolation
● Between channels and backplane bus
Yes
● Between channels
No
Permissible potential difference
● Between different circuits
60 V DC/30 V AC (SELV)
Insulation tested at
● Channels to backplane bus and load voltage L+
500 Vac or 707 Vdc (type test)
Current consumption
● from backplane bus (5 V)
20 mA maximum
Module power loss Typ. 6 W
Status, interrupts, diagnostics
Status display Green LED per channel
Interrupts None
Diagnostic functions None
Substitute values can be connected No
Data for selecting a sensor
Input voltage
● Rated value
24 V DC
● For "1" signal
13 to 30 V
● For "0" signal
-30 to 5 V
Input current
● For "1" signal
7 mA
Input delay
● For "0" to "1"
1.2 to 4.8 ms
● For "1" to "0"
1.2 to 4.8 ms
Input characteristic In accordance with IEC 61131-2; type 1
Connection of 2-wire BEROs Possible
● Permissible quiescent current
Maximum 1.5 mA
Digital modules
4.7 Digital input module SM 421; DI 32 x DC 24 V (6ES7421-1BL01-0AA0)
S7-400 Automation System Module Data
Reference Manual, Ausgabe 11/2016, A5E00850736-08 99
To Next Page
Loading...
