Programmable Logic Controller Guide: Selection, Application, and Maintenance for Engineers
PLC selection guide for engineers covering IEC 61131 compliance, Siemens, Rockwell, Schneider, ABB comparison, scan time sizing, and wiring. Shop at Stoklink.
The Siemens SIMATIC S7-1200 SM 1226 F-DQ (6ES7226-6DA32-0XB0) is a fail-safe digital output module providing 4x 24 V DC outputs rated 2 A each over PROFIsafe, achieving Performance Level e per ISO 13849-1 and SIL 3 per IEC 61508. It occupies 70 mm of rail width, draws 125 mA max from the S7-1200 backplane bus, and is IP20 rated for panel mounting.
The safety rating, PL e / SIL 3, and PROFIsafe interface set this module apart from the standard non-fail-safe SM 1226 digital output cards — select it when the machine's safety function, such as safe torque removal wiring or guard interlocks, needs a certified safety output rather than a general-purpose relay or contactor drive. Each of the 4 outputs switches up to 2 A at 24 V DC with residual leakage current below 0.5 mA on both P- and M-switch, relevant when sizing downstream loads that must reliably register a safe OFF state.
Used in SIMATIC S7-1200-based safety circuits — E-stop chains, guard door interlocks, and light-curtain output stages — where the PLC itself must drive safety-rated 24 V DC outputs instead of routing through a separate safety relay.
| Product type designation | SM 1226 F-DQ 4x 24 VDC |
|---|
| permissible range, lower limit (DC) | 20.4 V |
|---|---|
| permissible range, upper limit (DC) | 28.8 V |
| power supply according to NEC Class 2 required | No |
| from backplane bus 5 V DC, max. | 125 mA |
|---|---|
| Digital outputs: from load voltage L+, max. | 170 mA |
| Part number | 6ES7226-6DA32-0XB0 |
|---|---|
| Type designation | SM 1226 F-DQ 4x 24 VDC |
| Brand | Siemens |
| Condition | New, factory sealed |
| Source | Siemens and its authorised distributors |
| Warranty | Manufacturer warranty |
| Lifecycle status | Active, in production |
| EAN | 4025515082873 |
| ETIM class | EC001419 |
| eCl@ss | 27242204 |
| Power loss, typ. | 8 W |
|---|
| Number of digital outputs | 4 |
|---|---|
| in groups of | 1 |
| Short-circuit protection | Yes |
| Switching capacity of the outputs: with resistive load, max. | 30 Hz |
| Switching capacity of the outputs: on lamp load, max. | 10 Hz |
| Output voltage: Rated value (DC) | 24 V |
| Output current: for signal "1" rated value | 2 A |
| Output current: for signal "1" permissible range, max. | 10 mA to 2.4 A |
| Output current: for signal "0" residual current, max. | P-switch: 0.5 mA, maximum; M-switch: 0.5 mA, maximum |
| Cable length: shielded, max. | 200 m |
| Cable length: unshielded, max. | 200 m |
| Diagnostics indication LED: for status of the outputs | Yes |
|---|
| IP degree of protection | IP20 |
|---|
| CE mark | Yes |
|---|---|
| cULus | Yes |
| FM approval | Yes |
| Highest safety class achievable in safety mode: Performance level according to ISO 13849-1 | Category 4, PL e |
| Highest safety class achievable in safety mode: SIL acc. to IEC 61508 Probability of failure (for service life of 20 years and repair time of 100 hours) | SIL 3 |
| Highest safety class achievable in safety mode: Low demand mode: PFDavg in accordance with SIL3 | < 1.00E-05 |
| Highest safety class achievable in safety mode: High demand/continuous mode: PFH in accordance with SIL3 | < 4.00E-09 |
| Free fall: Fall height, max. | 0.3 m; five times, in product package |
|---|---|
| Ambient temperature during operation: min. | 0 °C |
| Ambient temperature during operation: max. | 55 °C |
| Ambient temperature during operation: permissible temperature change | 5°C to 55°C, 3°C / minute |
| Ambient temperature during storage/transportation: min. | -40 °C |
| Ambient temperature during storage/transportation: max. | 70 °C |
| Air pressure acc. to IEC 60068-2-13: Storage/transport, min. | 660 hPa |
| Air pressure acc. to IEC 60068-2-13: Storage/transport, max. | 1 080 hPa |
| Relative humidity: Operation at 25 ℃ without condensation, max. | 95 % |
| Enclosure material (front): Plastic | Yes |
|---|
| Width | 70 mm |
|---|---|
| Height | 100 mm |
| Depth | 75 mm |
| Weight, approx. | 270 g |
|---|
| Net weight | 0.265 kg |
|---|---|
| Country of origin | CN |
| Shipping weight | 0.765 kg |
| Ships from | Türkiye |
| Dispatch | 13 Nov |
| Stock | In stock |
Source: manufacturer data · Last verified: 01 Nov 2026
No documents are on file for this part yet.
Ask us for the datasheetThe rated current of SM 1226 F-DQ 4x 24 VDC is 2 A.
The rated operational voltage of SM 1226 F-DQ 4x 24 VDC is 24 V AC.
The tariff (HS) code on file for SM 1226 F-DQ 4x 24 VDC is 85389091.
The EAN (GTIN) of SM 1226 F-DQ 4x 24 VDC is 4025515082873.
SM 1226 F-DQ 4x 24 VDC ships from Türkiye. Shipping calculated at checkout · import duties and taxes paid on arrival. Stock items are dispatched within 1–2 business days.
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