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 6ES7223-1QH32-0XB0 is a SIMATIC S7-1200 digital I/O module (SM 1223) with 8 AC inputs rated 120/230 V AC and 8 relay outputs switching up to 2 A each. It runs from a 24 V DC backplane supply, groups inputs and outputs in sets of 4 for potential separation, and carries IP20, CE, UL/cULus, CSA, FM, and RCM/KC approvals.
The 8 AC inputs read 120/230 V AC field devices directly, so this card avoids interposing relays where limit switches or pushbuttons already run on line voltage. On the output side, the 8 relay channels switch either AC (5-250 V AC) or DC (5-30 V DC) loads on the same card, unlike a transistor output module limited to one voltage type, which suits panels mixing AC contactors with DC indicators. Output short-circuit protection is not built in and must be provided externally, which matters when sizing upstream fusing for the relay outputs.
Machine control panels with mixed 120/230 V AC field inputs and relay-switched AC/DC outputs, such as line-voltage limit switches feeding contactors, solenoids, or pilot lamps from an S7-1200 station.
| Product type designation | SM 1223, DI 8x120/230 V AC, DQ 8x relay |
|---|
| Rated value (DC) | 24 V |
|---|---|
| permissible range, lower limit (DC) | 20.4 V |
| permissible range, upper limit (DC) | 28.8 V |
| from backplane bus 5 V DC, max. | 120 mA |
|---|
| Part number | 6ES7223-1QH32-0XB0 |
|---|---|
| Type designation | SM 1223, DI 8x120/230 V AC, DQ 8x relay |
| Brand | Siemens |
| Condition | New, factory sealed |
| Source | Siemens and its authorised distributors |
| Warranty | Manufacturer warranty |
| Lifecycle status | Active, in production |
| EAN | 6940408102026 |
| ETIM class | EC001419 |
| eCl@ss | 27242204 |
| Power supply to the transmitters: present | Yes |
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| Power loss, typ. | 7.5 W |
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| Number of digital inputs | 8 |
|---|---|
| in groups of | 4 |
| Input characteristic curve in accordance with IEC 61131, type 1 | Yes |
| Number of simultaneously controllable inputs all mounting positions: up to 40 °C, max. horizontal installation | 8 |
| Input voltage: Rated value (AC) | 120/230 V AC |
| Input voltage: for signal "0" | 20 V AC at 1 mA |
| Input voltage: for signal "1" | 79 V AC at 2.5 mA |
| Input current: for signal "0", max. (permissible quiescent current) | 1 mA |
| Input current: for signal "1", min. | 2.5 mA |
| Input current: for signal "1", typ. | 9 mA |
| Input delay (for rated value of input voltage) for standard inputs: parameterizable for interrupt inputs | Yes; 0.2 ms, 0.4 ms, 0.8 ms, 1.6 ms, 3.2 ms, 6.4 ms and 12.8 ms, selectable in groups of four |
| Cable length: shielded, max. | 500 m |
| Cable length: unshielded, max. | 300 m |
| Number of digital outputs | 8 |
|---|---|
| in groups of | 4 |
| Short-circuit protection | No; to be provided externally |
| Switching capacity of the outputs: with resistive load, max. | 2 A |
| Switching capacity of the outputs: on lamp load, max. | 30 W with DC, 200 W with AC |
| Output voltage: Rated value (DC) | 5 V DC to 30 V DC |
| Output voltage: Rated value (AC) | 5 V AC to 250 V AC |
| Output current: for signal "1" rated value | 2 A |
| Output current: for signal "1" permissible range, max. | 2 A |
| Output delay with resistive load: "0" to "1", max. | 10 ms |
| Output delay with resistive load: "1" to "0", max. | 10 ms |
| Total current of the outputs (per group) horizontal installation: up to 50 °C, max. | 8 A; Current per mass |
| Relay outputs: Number of relay outputs | 8 |
| Relay outputs: Rated supply voltage of relay coil L+ (DC) | 24 V |
| Relay outputs: Number of operating cycles, max. Switching capacity of contacts | mechanically 10 million, at rated load voltage 100 000 |
| Relay outputs: with inductive load, max. | 2 A |
| Relay outputs: on lamp load, max. | 30 W with DC, 200 W with AC |
| Relay outputs: with resistive load, max. | 2 A |
| Cable length: shielded, max. | 500 m |
| Cable length: unshielded, max. | 150 m |
| Alarms: Diagnostic alarm | Yes |
|---|---|
| Diagnostics indication LED: for status of the inputs | Yes |
| Diagnostics indication LED: for status of the outputs | Yes |
| Potential separation digital inputs: between the channels, in groups of | 2 |
|---|---|
| Potential separation digital outputs: between the channels | Relays |
| Potential separation digital outputs: between the channels, in groups of | 2 |
| Potential separation digital outputs: between the channels and backplane bus | 1 500 V AC for 1 minute |
| between different circuits | 750 V AC for 1 minute |
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| IP degree of protection | IP20 |
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| CE mark | Yes |
|---|---|
| CSA approval | Yes |
| UL approval | Yes |
| cULus | Yes |
| FM approval | Yes |
| RCM (formerly C-TICK) | Yes |
| KC approval | Yes |
| Marine approval | Yes |
| Ecological footprint: environmental product declaration Global warming potential | Yes |
| Ecological footprint: global warming potential, (total) [CO2 eq] | 123 kg |
| Ecological footprint: global warming potential, (during production) [CO2 eq] | 12.1 kg |
| Ecological footprint: global warming potential, (during operation) [CO2 eq] | 111 kg |
| Ecological footprint: global warming potential, (after end of life cycle) [CO2 eq] | -0.434 kg |
| Free fall: Fall height, max. | 0.3 m; five times, in product package |
|---|---|
| Ambient temperature during operation: min. | -20 °C |
| Ambient temperature during operation: max. | 60 °C; Number of simultaneously activated outputs: 4 (no adjacent points) at 60 °C horizontal or 50 °C vertical, 8 at 55 °C horizontal or 45 °C vertical |
| Ambient temperature during operation: horizontal installation, min. | -20 °C |
| Ambient temperature during operation: vertical installation, min. | -20 °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 % |
| required front connector | Yes |
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| Enclosure material (front): Plastic | Yes |
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| Width | 45 mm |
|---|---|
| Height | 100 mm |
| Depth | 75 mm |
| Weight, approx. | 230 g |
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| Miscellaneous Manufacturer Declara- | tion |
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| Net weight | 0.223 kg |
|---|---|
| Country of origin | CN |
| Shipping weight | 0.723 kg |
| Ships from | Türkiye |
| Dispatch | 12 Nov |
| Stock | Low 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 1223, DI 8x120/230 V AC, DQ 8x relay is 2 A.
The rated operational voltage of SM 1223, DI 8x120/230 V AC, DQ 8x relay is 120–230 V AC.
The tariff (HS) code on file for SM 1223, DI 8x120/230 V AC, DQ 8x relay is 85389091.
The EAN (GTIN) of SM 1223, DI 8x120/230 V AC, DQ 8x relay is 6940408102026.
SM 1223, DI 8x120/230 V AC, DQ 8x relay 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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