Siemens Simatic M7-400 Reference Manual page 165

Technical Specifications of the SM 421; DI 16
Dimensions and Weight
Dimensions W H D
(in millimeters)
Weight
Data for Specific Module
Number of inputs
Length of cable
•
Unshielded
•
Shielded
Voltages, Currents, Potentials
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
S7-400, M7-400 Programmable Controllers Module Specifications
A5E00069467-07
25 290 210 Input voltage
•
•
Approx. 650 g
•
•
16
Input current
•
600 m
•
1000 m
Input delay
•
16
•
Input characteristic curve
Connection of two-wire BEROs
Yes
•
Yes
1
120 VAC
250 VAC
1500 VAC
Max. 0.1 A
Typ. 3.0 W
Green LED per
channel
None
None
120 VAC
Sensor Selection Data
Rated value
For signal "1"
For signal "0"
Frequency range
At signal "1"
At signal "0"
At "0" to "1"
At "1" to "0"
Permitted bias current
Digital Modules
120 V
72 to 132 VAC
0 to 20 V
47 to 63 Hz
6 to 20 mA
0 to 4 mA
2 to 15 ms
5 to 25 ms
To IEC 61131; type 2
Possible
Max. 4 A
4-43