Overview
The 6ES7422-1BH11-0AA0 is a Siemens SM 422 digital output module for the SIMATIC S7-400 rack, delivering 16 isolated 24 V DC outputs rated 2 A per channel with a total power draw of 5.0 W.

Siemens 6ES7422-1BH11-0AA0 — now in phase-out and being discontinued, supplied from remaining surplus and broker stock.
| Parameter | Value |
|---|---|
| Digital outputs | 16 |
| Parameter | Value |
|---|---|
| Rated value (DC) | 24 V |
| Output current, resistive load, max. | 100 Hz |
| Output current at signal "1" (rated) | 2 A |
| Output current, max. per circuit / per module | 2.4 A |
| Permissible range, upper limit (DC) | 28.8 V |
| Permissible range, lower limit (DC) | 20.4 V |
| Output voltage at signal "1" (min.) | L+ (-0.5 V) |
| Residual current at signal "0", max. | 0.5 mA |
| Output current up to 60 °C, max. | 2 A; 2 adjacent outputs each |
| Current consumption from backplane bus (5 V DC), max. | 160 mA |
| Power dissipation (typ.) | 5 W |
| Inductive shutdown voltage clamp | -30 V |
| Load resistance, upper limit | 4 kΩ |
| Load resistance, lower limit | 24 Ω |
| Isolation between channels | Yes |
| Isolation between channels and backplane bus | Yes |
| Isolation, channels in groups of | 8 |
| Isolation test voltage | 500 V DC |
| Parameter | Value |
|---|---|
| Short-circuit protection | Yes; Clocked electronically |
| Diagnostics function | No |
| Short-circuit response threshold (typ.) | 2.8 to 6 A |
| Redundant load control | Yes; possible (only outputs of the same group) |
| Output can drive a digital input | Yes; possible |
| Parameter | Value |
|---|---|
| Output switching delay 0 to 1, max. | 1 ms |
| Output switching delay 1 to 0, max. | 1 ms |
| Switching frequency, inductive load, max. | 0.1 Hz |
| Switching frequency, lamp load, max. | 10 Hz |
| Parameter | Value |
|---|---|
| Cable length, unshielded, max. | 600 m |
| Cable length, shielded, max. | 1 000 m |
| Width | 25 mm |
| Height | 290 mm |
| Depth | 210 mm |
| Weight (approx.) | 600 g |
The 6ES7422-1BH11-0AA0 is a Siemens SM 422 digital output module for the SIMATIC S7-400 rack, delivering 16 isolated 24 V DC outputs rated 2 A per channel with a total power draw of 5.0 W.
Alternative models and sibling configurations in the same Siemens series. For obsolete or discontinued parts, these models can serve as compatible replacements or functional alternatives for plant maintenance.
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