Siemens M7-400 ユーザーズマニュアル
Digital Modules
4-43
S7-400, M7-400 Programmable Controllers Module Specifications
A5E00069467-07
A5E00069467-07
Technical Specifications
of the SM 421; DI 16
120 VAC
Dimensions and Weight
Dimensions W
H
D
(in millimeters)
25
290
210
Weight
Approx. 650 g
Data for Specific Module
Number of inputs
16
Length of cable
•
Unshielded
•
Shielded
600 m
1000 m
Voltages, Currents, Potentials
Number of inputs that can be
triggered simultaneously
triggered simultaneously
16
Isolation
•
Between channels and
backplane bus
backplane bus
Yes
•
Between the channels
Yes
–
In groups of
1
Permitted potential difference
•
Between M
internal
and the
inputs
120 VAC
•
Between the inputs of the
different groups
different groups
250 VAC
Insulation tested with
1500 VAC
Current consumption
•
From the backplane bus
Max. 0.1 A
Power dissipation of the
module
module
Typ. 3.0 W
Status, Interrupts, Diagnostics
Status display
Green LED per
channel
channel
Interrupts
None
Diagnostic functions
None
Sensor Selection Data
Input voltage
•
Rated value
•
For signal “1”
•
For signal “0”
•
Frequency range
120 V
72 to 132 VAC
0 to 20 V
47 to 63 Hz
Input current
•
At signal “1”
•
At signal “0”
6 to 20 mA
0 to 4 mA
Input delay
•
At “0” to “1”
•
At “1” to “0”
2 to 15 ms
5 to 25 ms
Input characteristic curve
To IEC 61131; type 2
Connection of two-wire BEROs
•
Permitted bias current
Possible
Max. 4 A