Digital Modules
4-89
S7-400, M7-400 Programmable Controllers Module Specifications
A5E00069467-07
Technical Specifications of the SM 422; DO 16 20-120 VAC/2 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 L+ 20 to 132 VAC
•Permitted frequency range 47 Hz to 63 Hz
Total current of the outputs
Up to 40 C
Up to 60 C
With fan subassembly
Max. 16 A 24 A
Max. 7 A 16 A
Isolation
•Between channels and
backplane bus Yes
•Between the channels
In groups of
Yes
1
Permitted potential difference
•Between Minternal and the
outputs 120 VAC
•Between the outputs of the
different groups 250 VAC
Insulation tested with 1500 VDC
Current consumption
•From the backplane bus
•From load voltage L +
(without load)
Max. 600 mA
Max. 0 mA
Power dissipation of the
module Typ. 20 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 Possible
Substitute value can be applied Yes, programmable
Data for Selecting an Actuator
Output voltage
•At signal “1” L1 (–1.5 Vrms)
Output current
•At signal “1”
Rated value
Permitted range
2 A
100 mA to 2 A
Permitted surge current
(per group) Max. 20 A/2 cycles
•At signal “0” (leakage
current) Max. 2.5 mA at 30 V
Max. 4.5 mA at 132 V
Output delay (for resistive load)
•From “ 0” to “1” 1 ms
•At “1” to “0” 1 AC cycle
Zero cross inhibit voltage Non-zero cross outputs
Size of the motor starter Max. size 5 to NEMA
Lamp load Max. 50 W
Parallel connection of 2
outputs
•For redundant triggering of
a load Possible (only outputs
of the same group)
•To increase performance Not possible
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
•For lamp load 1 Hz
Short-circuit protection of the
output
•Min. current required for
fuse to blow
Fuse 8A/125 V 2AG
(per output)
Min. 40 A
•Max. response time Typ. 33 ms
Replacement fuses
•Littelfuse
Fuse, 8 A, quick-acting
225.008