Product Overview
Technical Summary
| Product | SIMATIC S7-400 digital output SM 422 |
|---|---|
| Digital outputs | 32 |
| Rated load voltage | 24 V DC |
| Permissible load voltage | 20.4 V to 28.8 V DC |
| Rated output current | 0.5 A for signal "1" |
| Output delay | 0.15 ms |
| Short-circuit protection | Yes; Clocked electronically |
| Isolation test voltage | 500 V DC |
| Product lifecycle | Announcement of product phase-out |
Key Features
The SM 422 has 32 digital outputs with potential separation between channels and the backplane bus; channel separation is arranged in groups of 8.
Rated load voltage is 24 V DC, with a permissible range from 20.4 V to 28.8 V.
Rated output current for signal "1" is 0.5 A; the permissible range is 5 mA to 0.5 A.
Diagnostics include wire break detection below 0.15 mA, short-circuit detection above 1 A typ., and INTF, EXTF, and digital-output status LEDs.
Maximum switching frequency is 100 Hz with resistive load, 2 Hz with inductive load, and 2 Hz with lamp load.
The module measures 25 mm wide, 290 mm high, and 210 mm deep, with an approximate weight of 600 g.
Frequently Asked Questions
What is the exact product type?
It is a SIMATIC S7-400 digital output SM 422 with 32 isolated digital outputs.
What load voltage does 6ES7422-7BL00-0AB0 use?
The rated load voltage is 24 V DC, with a permissible range from 20.4 V to 28.8 V DC.
What output current is supported?
The rated output current for signal "1" is 0.5 A, with a permissible range from 5 mA to 0.5 A.
What diagnostics are available?
Diagnostics include parameterizable diagnostic and hardware alarms, wire break and short-circuit information, and INTF, EXTF, and digital-output status LEDs.
What project details should accompany a quotation request?
Provide the requested quantity, destination, schedule context, and any additional BOM lines.
