Siemens Simatic S7-400 - Manual (Page 197)

Digital Modules
4-75
S7-400, M7-400 Programmable Controllers Module Specifications
A5E00069467-07
Technical Specifications of the SM 422; DO 32 24 VDC/0.5 A
Dimensions and Weight
Dimensions W H D
(in millimeters)
25 290 210
Weight Approx. 600 g
Data for Specific Module
Number of outputs 32
Length of cable
•
Unshielded
•
Shielded
600 m
1000 m
Voltages, Currents, Potentials
Power rated voltage of the
electronics L+ 24 VDC
Rated load voltage L+ 24 VDC
Total current of the outputs (per
group)
Up to 40 _ C
Up to 60 _ C
Max. 4 A
Max. 2 A
Isolation
•
Between channels and
backplane bus Yes
•
Between the channels
In groups of
Yes
8
Permitted potential difference
•
Between the different
circuits 75 VDC, 60 VAC
Insulation tested with
•
Channels against
backplane bus and load
voltage L+ 500 VDC
•
Between the outputs of the
different groups 500 VDC
Current consumption
•
From the backplane bus
•
Power supply and load
voltage L+ (no load)
Max. 200 mA
Max. 120 mA
Power dissipation of the
module Typ. 8 W
Status, Interrupts, Diagnostics
Status display Green LED per
channel
Interrupts
•
Diagnostic Interrupt
•
Hardware interrupt
Parameters can be
assigned
Parameters can be
assigned
Diagnostic functions
•
Monitoring of the load
voltage Yes
•
Group error display
– For internal fault Red LED (INTF)
– For external fault Red LED (EXTF)
•
Diagnostic information
readable Yes
Monitoring for
•
Short circuit > 1 A (typ.)
•
Wire break < 0.15 mA
Substitute value can be applied Yes
Data for Selecting an Actuator
Output voltage
•
At signal “1” Min. L + (– 0.8 V)
Output current
•
At signal “1”
Rated value
Permitted range
0.5 A
5 mA to 0.6 A
•
At signal “0” (leakage
current) Max. 0.5 mA
Load resistor range 48 W to 4 k W
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. 100 Hz
•
For inductive load
to IEC 947-5-1, DC 13 Max. 2 Hz
•
For lamp load Max. 2 Hz
Limit (internal) of the inductive
circuit interruption voltage up to Typ. L + (– 45 V)
Short-circuit protection of the
output
•
Threshold on
Electronically cyclic
Typ. 0.75 A to 1.5 A