Siemens S7-400 Manual De Usuario
Digital Modules
4-46
S7-400, M7-400 Programmable Controllers Module Specifications
A5E00069467-07
Technical Specifications of the SM 421; DI 16
24/60 VUC
Programming package
Associated programming
package
package
As of STEP 7 V 2.0
Dimensions and Weight
Dimensions W H
D
(in millimeters)
25
290
210
Weight
Approx. 600 g
Data for Specific Module
Number of inputs
16
Length of cable
•
Unshielded
input delay
input delay
–
0.5 ms
–
3 ms
–
10 / 20 ms
Max. 100 m
Max. 600 m
Max. 600 m
Max. 600 m
Max. 600 m
•
Shielded line length
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 the different
circuits
circuits
75 VDC, 60 VAC
Insulation tested with
•
Channels against
backplane bus and load
voltage L+
backplane bus and load
voltage L+
1500 VAC
•
Channels among one
another
another
1500 VAC
Current consumption
•
From the backplane bus
Max.150 mA
Power dissipation of the
module
module
Typ. 8 W
Status, Interrupts, Diagnostics
Status display
Green LED per
channel
channel
Interrupts
•
Hardware interrupt
•
Diagnostic Interrupt
Parameters can be
assigned
Parameters can be
assigned
assigned
Parameters can be
assigned
Diagnostic functions
Parameters can be
assigned
assigned
•
Group error display
–
For internal fault
Red LED (INTF)
–
For external fault
Red LED (EXTF)
•
Channel error display (F)
None
•
Diagnostic information can
be displayed
be displayed
Possible
Monitoring for
•
Wire break
I > 0.7 mA
Substitute value can be applied
No
Sensor Selection Data
Input voltage
•
Rated value
24 VUC to 60 VUC
•
For signal “1”
15 to 72 VDC
-15 VDC to -72 VDC
15 to 60 VAC
-15 VDC to -72 VDC
15 to 60 VAC
•
For signal “0”
-6 VDC to +6 VDC
0 VAC to 5 VAC
0 VAC to 5 VAC
Frequency range
47 DC/AC to 63 Hz
Input current
•
At signal “1”
Typ. 4 mA to 10 mA
Input characteristic curve
Similar to IEC 61131
1)
Connection of two-wire BEROs
•
Permitted bias current
Possible
Max. 0.5 mA to 2 mA
Max. 0.5 mA to 2 mA
2)
Time, Frequency
Internal preparation time for
•
Only hardware interrupt
enable
enable
Max. 450
s
•
Enable hardware and
diagnostic interrupts
diagnostic interrupts
Max. 2 ms
Input delay
•
Parameters can be
assigned
assigned
Yes
•
Rated value
0.5/3/10/20 ms
Values go into cycle and response times.
Sensor Circuit
Resistance circuit of the sensor
for wire break monitoring
for wire break monitoring
•
Rated voltage 24 V
(15 V to 35 V)
(15 V to 35 V)
•
Rated voltage 48 V
(30 V to 60 V)
(30 V to 60 V)
•
Rated voltage 60 V
(50 V to 72V)
(50 V to 72V)
18 k
Ω
39 k
Ω
56 k
Ω
1
) IEC 61131 does not specify any data for UC
modules. The values have been adapted as much
as possible to IEC 61131.
as possible to IEC 61131.
2)
Minimum closed-circuit current is required for wire
break monitoring.
break monitoring.