Siemens Simatic S7-400 - Manual (Page 189)

Digital Modules
4-67
S7-400, M7-400 Programmable Controllers Module Specifications
A5E00069467-07
Technical Specifications of the SM 422; DO 16 20-125 VDC/1.5 A
Dimensions and Weight
Dimensions W H D
(in millimeters)
25 290 210
Weight Approx. 800 g
Data for Specific Module
Number of outputs 16
Length of cable
•
Unshielded
•
Shielded
Max. 600 m
Max. 1000 m
Voltages, Currents, Potentials
Rated load voltage L1
•
Reverse polarity protection
20 VDC to 138 VDC
Yes, with fuse
Total current of the outputs 1)
Up to 40 _ C
Up to 60 _ C
With fan subassembly
Max. 16 A 21 A
Max. 8 A 14 A
Isolation
•
Between channels and
backplane bus Yes
•
Between the channels
In groups of
Yes
8
Permitted potential difference
•
Between the outputs of the
different groups 250 VAC
Insulation tested with 1500 VAC
Current consumption
•
From the backplane bus
•
From load voltage L +
(without load)
Max. 700 mA
Max. 2 mA
Power dissipation of the
module Typ. 10 W
Status, Interrupts, Diagnostics
Status display Green LED per
channel
Interrupts
•
Diagnostic Interrupt Parameters can be
assigned
Diagnostic functions Parameters can be
assigned
•
Group error display
– For internal fault Red LED (INTF)
– For external fault Red LED (EXTF)
•
Diagnostic information
readable Yes
Substitute value can be applied Yes, programmable
Data for Selecting an Actuator
Output voltage
•
At signal “1” Min. L+ (–1,0 V)
Output current
•
At signal “1”
Rated value 1.5 A
Permitted range 10 mA to 1.5 A
Permitted surge current Max. 3 A
(for 10 ms)
•
At signal “0” (leakage
current) Max. 0.5 mA
Output delay (for resistive load)
•
From “ 0” to “1” Max. 2 ms
•
At “1” to “0” Max. 13 ms
Parallel connection of 2
outputs
•
For redundant triggering of
a load Possible (only outputs
of the same group)
•
To increase performance Possible (only outputs
of the same group)
Triggering a digital input Possible
Switch rate
•
For resistive load Max. 10 Hz
•
For inductive load
to IEC 947-5-1, DC 13 Max. 0.5 Hz
Short-circuit protection
of output Electronically
protected
2)
•
Threshold on Typ. 04 A to 5 A
Replacement fuses Fuse, 8 A/250 V, quick
blow
1) To achieve maximum performance capability,
distribute the high-current load between the two
groups.
2) To reset a deactivated output,
first set the output signal to 0 and then to 1.
If output signal 1 is written to a deactivated
output and the short circuit remains, additional
interrupts are generated (provided the diagnostic
interrupt parameter was set).