Siemens Simatic M7-400 Reference Manual page 180

Digital Modules
Technical Specifications of the SM 421; DI 32
Dimensions and Weight
Dimensions W H D (mm)
Weight
Data for Specific Module
Number of inputs
Length of cable
•
Unshielded
•
Shielded
Voltages, Currents, Potentials
Rated load voltage L+
•
Reverse polarity protection
Number of inputs that can be
triggered simultaneously
Isolation
•
Between channels and
backplane bus
•
Between the channels
– In groups of
Permitted potential difference
•
Between M and the
internal
inputs
•
Between the inputs of the
different groups
Insulation tested with
Current consumption
•
From the backplane bus
Power dissipation of the
module
Status, Interrupts, Diagnostics
Status display
Interrupts
Diagnostic functions
4-58
25 290 210 Input voltage
•
•
Approx. 600 g
•
32
•
Input current
600 m
•
1000 m
•
Input delay
79 to 132 VAC
•
80 to 132 VDC
•
Yes
Input characteristic curve
32
Connection of two-wire BEROs
•
Yes
Yes
8
120 VAC
250 VAC
1500 VAC
Max. 0.2 A
Typ. 6.5 W
Green LED per
channel
None
None
S7-400, M7-400 Programmable Controllers Module Specifications
120 VUC
Data for Selecting a Sensor
Rated value 120 VUC
For signal "1" 79 to 132 VAC
80 VDC to 132 VDC
For signal "0" 0 to 20 V
Frequency range 47 to 63 Hz
At signal "1" 2 mA to 5 mA
At signal "0" 0 to 1 mA
At "0" to "1" 5 to 25 ms
At "1" to "0" 5 to 25 ms
To IEC 61131; type 1
Possible
Permitted bias current Max.1 mA
A5E00069467-07