Siemens 6ES7422-1FH00-0AA0
SM 422 digital output, 16 DO, 120/230 V AC, 2 A
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Siemens SIMATIC S7-400 SM 422 digital output module: 16 isolated outputs for 120/230 V AC, 2 A each, with fuses.
- Manufacturer
- Siemens
- Manufacturer part no.
- 6ES7422-1FH00-0AA0
- Product family
- SIMATIC S7-400 PLC CPUs, I/O and Function Modules
- Type
- Digital output module
- Category
- PLCs and I/O › Digital I/O modules
- Lifecycle
- Discontinued
- OEM successor
- Not stated
- Technical datasheet
- Data sheet
Technical specifications
- Manufacturer
- Siemens
- Manufacturer part no.
- 6ES7422-1FH00-0AA0
- Type
- Digital output module
- Application
- Digital output module
- Used with
- SIMATIC S7-400 rack
- Load voltage L1 / Rated value (AC)
- 230 V; 120/230 V AC
- Load voltage L1 / permissible range, lower limit (AC)
- 79 V
- Load voltage L1 / permissible range, upper limit (AC)
- 264 V
- Load voltage L1 / permissible frequency range, lower limit
- 47 Hz
- Load voltage L1 / permissible frequency range, upper limit
- 63 Hz
- Input current / from load voltage L+ (without load), max.
- 1.5 mA
- Input current / from backplane bus 5 V DC, max.
- 400 mA
- Power loss, typ.
- 16 W
- Number of digital outputs
- 16
- Digital outputs / Short-circuit protection
- Yes; Clocked electronically: Following a short-circuit, reclosing under a full load cannot be ensured. Countermeasures: change the signal at the output or interrupt the load voltage of the module. Briefly disconnect the load from the output.
- Short-circuit protection / required current for fuse shutdown, min.
- 100 A
- Short-circuit protection / Response time, max.
- 100 ms
- Controlling a digital input
- Yes; possible
- Digital outputs / Size of motor starters according to NEMA, max.
- Size 5 according to NEMA
- Digital outputs / Spare fuses
- Fuse 8 A, 250 V, quick response
- Digital outputs / Zero-crossing switch
- No
- Switching capacity of the outputs / on lamp load, max.
- 50 W
- Output voltage / for signal "1", min.
- L1 (-18.1 V)
- Output voltage / for signal "1" (at max. current), min.
- L1 (-1.3 Vrms)
- Output voltage / for signal "1" (at min. current), min.
- L1 (-18.1 Vrms)
- Output current / for signal "1" rated value
- 2 A
- Output current / for signal "1" permissible range, min.
- 10 mA
- Output current / for signal "1" permissible range, max.
- 2 A
- Output current / for signal "1" permissible surge current, max.
- 50 A; per cycle
- Output current / for signal "0" residual current, max.
- 2.6 mA
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- Output delay with resistive load / "0" to "1", max.
- 1 ms
- Output delay with resistive load / "1" to "0", max.
- 1 AC cycle
- Parallel switching of two outputs / for redundant control of a load
- Yes; Possible (only outputs with the same load voltage)
- Switching frequency / with resistive load, max.
- 10 Hz
- Switching frequency / with inductive load, max.
- 0.5 Hz
- Switching frequency / with inductive load (acc. to IEC 60947-5-1, AC15), max.
- 0.5 Hz
- Switching frequency / on lamp load, max.
- 1 Hz
- Total current of the outputs (per group) / all mounting positions / up to 40 °C, max.
- 4 A; 6 A with fan assembly
- Total current of the outputs (per group) / all mounting positions / up to 60 °C, max.
- 2 A; 5 A with fan subassembly; per 4 adjacent outputs
- Cable length / shielded, max.
- 1 000 m
- Cable length / unshielded, max.
- 600 m
- Interrupts/diagnostics/status information / Diagnostics function
- Not parameterizable
- Diagnostics indication LED / internal fault INTF (red)
- Yes; Fuse blown
- Diagnostics indication LED / external fault EXTF (red)
- Yes; Missing load voltage
- Potential separation digital outputs / between the channels
- Yes
- Potential separation digital outputs / between the channels, in groups of
- 4
- Potential separation digital outputs / between the channels and backplane bus
- Yes
- Isolation tested with
- 1 500 V AC
- Width
- 25 mm
- Height
- 290 mm
- Depth
- 210 mm
- Weight, approx.
- 800 g
Technical documents (1)
Key features
- 16 digital outputs, 120/230 V AC (47 to 63 Hz), 2 A each
- Load voltage 79 to 264 V AC
- Lamp load up to 50 W; NEMA motor starters up to size 5
- Spare fuse: 8 A, 250 V, quick response
- Discontinued by Siemens on 1 October 2026
About the Siemens 6ES7422-1FH00-0AA0
The Siemens 6ES7422-1FH00-0AA0 is the AC-voltage SM 422: 16 outputs switching 120 or 230 V AC at 2 A each, where the 6ES7422-1BH11-0AA0 switches 24 V DC. Siemens's data sheet gives a load voltage of 79 to 264 V AC, up to 50 W of lamp load, NEMA size 5 motor starters, 8 A quick-response fuses and 16 W typical power loss. SiePortal shows its phase-out announced on 1 October 2025 and its product cancellation on 1 October 2026.
What is the 6ES7422-1FH00-0AA0 used for?
It switches mains-voltage loads, such as contactor coils and motor starters, directly from an S7-400 CPU.
Lifecycle and successor
Discontinued.
Before you order
What to photograph or confirm so the right unit is quoted.
Check the order number on the module: 1FH00 switches 120/230 V AC, 1BH11 switches 24 V DC.
Other parts in the Siemens SIMATIC S7-400 family
Listed for reference. They differ from the 6ES7422-1FH00-0AA0 in rating, supply, interface or function and are not interchangeable with it unless Siemens says so. Match the part number on your unit.
| Product | Type | Lifecycle | Qty Available | Price | Action |
|---|---|---|---|---|---|
| Siemens 6ES7421-1BL01-0AA0SM 421 digital input, 32 DI, 24 V DC | Digital input module | Discontinued | On Request | On request | View |
| Siemens 6ES7422-1BL00-0AA0SM 422 digital output, 32 DO, 24 V DC, 0.5 A | Digital output module | Discontinued | On Request | On request | View |
| Siemens 6ES7421-7BH01-0AB0SM 421 digital input, 16 DI, 24 V DC, interrupt and diagnostics | Digital input module | Discontinued | On Request | On request | View |
| Siemens 6ES7421-1EL00-0AA0SM 421 digital input, 32 DI, 120 V AC/DC | Digital input module | Discontinued | On Request | On request | View |
| Siemens 6ES7421-1FH20-0AA0SM 421 digital input, 16 DI, 120/230 V AC/DC | Digital input module | Discontinued | On Request | On request | View |
| Siemens 6ES7421-7DH00-0AB0SM 421 digital input, 16 DI, 24 to 60 V AC/DC, interrupt and diagnostics | Digital input module | Discontinued | On Request | On request | View |
| Siemens 6ES7422-1BH11-0AA0SM 422 digital output, 16 DO, 24 V DC, 2 A | Digital output module | Discontinued | On Request | On request | View |
| Siemens 6ES7422-7BL00-0AB0SM 422 digital output, 32 DO, 24 V DC, 0.5 A, diagnostics | Digital output module | Discontinued | On Request | On request | View |
| Siemens 6ES7422-1HH00-0AA0SM 422 relay output, 16 DO, 5 A | Digital output module | Discontinued | On Request | On request | View |
| Siemens 6ES7431-1KF00-0AB0SM 431 analog input, 8 AI, 13 bit, U/I/R | Analog input module | Discontinued | On Request | On request | View |
| Siemens 6ES7431-1KF10-0AB0SM 431 analog input, 8 AI, 14 bit, U/I/R/thermocouple/RTD | Analog input module | Discontinued | On Request | On request | View |
| Siemens 6ES7431-1KF20-0AB0SM 431 analog input, 8 AI, 14 bit, 0.42 ms for all channels | Analog input module | Discontinued | On Request | On request | View |
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