Siemens 6ES7222-1HF32-0XB0 — 8-Point Transistor Digital Output Module | S7-200 SMART Platform
Engineering Background
The Siemens S7-200 SMART series represents Siemens’ optimized compact PLC platform for cost-sensitive yet performance-demanding automation applications across Asia-Pacific and emerging markets. Designed as the successor to the classic S7-200, the SMART line retains the familiar STEP 7-Micro/WIN SMART programming environment while delivering enhanced Ethernet connectivity, expanded I/O capacity, and improved signal processing throughput.
Product Positioning
The 6ES7222-1HF32-0XB0 is a dedicated digital output expansion module providing 8 × transistor (sourcing) outputs at 24 V DC. It is the preferred choice for procurement engineers specifying high-cycle, low-latency discrete control in machine tools, conveyor systems, packaging lines, and building automation panels where relay output switching speed or contact wear would be a limiting factor.
Complete Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 6ES7222-1HF32-0XB0 |
| Product Family | SIMATIC S7-200 SMART |
| Module Type | Digital Output Expansion Module |
| Number of Outputs | 8 × Transistor (Sourcing, PNP) |
| Output Voltage | 24 V DC (20.4 – 28.8 V) |
| Output Current (per point) | 0.75 A |
| Total Output Current | 6 A (all outputs simultaneously) |
| Output Type | Solid-state transistor (no mechanical wear) |
| Isolation | Optocoupler isolation, field side vs. logic side |
| Response Time (OFF→ON) | ≤ 0.2 ms |
| Response Time (ON→OFF) | ≤ 0.2 ms |
| Short-circuit Protection | Yes (electronic) |
| Overload Protection | Yes |
| Power Supply (logic) | 5 V DC via expansion bus (from CPU) |
| Power Consumption (5 V bus) | 40 mA |
| Load Power Supply | 24 V DC (user-supplied) |
| Dimensions (W × H × D) | 45 × 100 × 81 mm |
| Weight | Approx. 300 g |
| Mounting | DIN rail (EN 60715) or panel mount |
| Operating Temperature | 0 °C to +55 °C |
| Storage Temperature | −40 °C to +70 °C |
| Relative Humidity | 5 % to 95 % (non-condensing) |
| Protection Class | IP20 |
| Certifications | CE, UL, cUL, FM, ATEX (Zone 2) |
| Compatible CPUs | S7-200 SMART CPU SR/ST series (all variants) |
| Max. Expansion Modules per CPU | 6 modules |
| Connection Type | Removable screw terminal block |
Proven Application Environments
- Machine Tool Control — High-speed spindle enable/disable, axis brake release, coolant pump control with sub-millisecond response.
- Conveyor & Material Handling — Solenoid valve actuation, motor starter control, zone sequencing in logistics and warehousing systems.
- Packaging Machinery — Servo drive enable signals, reject gate actuation, label applicator triggers requiring precise timing.
- Building Automation — HVAC damper control, lighting relay drivers, access control panel integration.
- Water Treatment & Utilities — Pump station control, valve sequencing, alarm output driving in harsh industrial environments.
- OEM Panel Builders — Compact footprint and DIN-rail mounting make this module ideal for space-constrained control cabinets.
Engineering Advantages
- Zero Mechanical Wear — Transistor outputs eliminate contact degradation, supporting millions of switching cycles without maintenance.
- Fast Switching — ≤ 0.2 ms ON/OFF response enables precise timing control for high-speed processes.
- Electronic Protection — Built-in short-circuit and overload protection reduces field wiring faults from causing module damage.
- Optocoupler Isolation — Galvanic isolation between field wiring and PLC logic bus protects the CPU from field-side transients.
- Plug-and-Play Expansion — Connects directly to S7-200 SMART CPU via side expansion connector; no additional power supply wiring required for logic.
- Compact Form Factor — 45 mm width minimizes panel real estate; supports up to 6 expansion modules per CPU for scalable I/O architecture.
- Wide Temperature Range — Rated 0–55 °C for reliable operation in non-air-conditioned industrial environments.
System Architecture & Signal Flow
The 6ES7222-1HF32-0XB0 connects to the S7-200 SMART CPU via the proprietary side-bus expansion connector. Logic power (5 V DC, 40 mA) is sourced directly from the CPU expansion bus — no separate logic supply is required. The 24 V DC load supply is wired independently by the user to the module’s L+ and M terminals, providing galvanic separation between the PLC logic domain and the field output domain.
Each output channel drives through an optocoupler stage into a transistor switch. The CPU writes output image data to the module at each scan cycle. Diagnostic bits for short-circuit conditions are reflected back to the CPU process image for program-level fault handling. Outputs are sourcing (PNP): the load is connected between the output terminal and the 0 V (M) rail.
Sourcing & Quality Verification
- OEM Origin — All units sourced from authorized Siemens distribution channels or verified surplus with full traceability documentation.
- Pre-shipment Inspection — Each module undergoes visual inspection, label verification (date code, country of manufacture), and functional power-on check before dispatch.
- Authenticity Guarantee — Konmask.com provides a written authenticity guarantee. Counterfeit units are returned at our cost with full refund.
- Packaging Integrity — Shipped in anti-static ESD bags with foam cushioning inside double-wall corrugated cartons. Humidity indicator cards included for long-haul shipments.
- Documentation Available — Siemens system manual (S7-200 SMART), module data sheet, and CE declaration of conformity available on request.
Procurement Process
- Confirm Compatibility — Verify your CPU model (SR20/SR30/SR40/SR60 or ST variant) and available expansion slot count (max. 6 modules per CPU).
- Request Quote — Contact support@konmask.com for volume pricing, lead time confirmation, and export documentation requirements.
- Place Order — Purchase directly via this listing or via purchase order (PO) for B2B accounts. Net-30 terms available for qualified buyers.
- Shipment & Tracking — Orders dispatched within 1–3 business days. DHL Express, FedEx International, and sea freight options available.
- Incoming Inspection — We recommend verifying part number label, date code, and performing a bench power-on test upon receipt before panel installation.
Technical FAQ
Q: Can this module be used with the original S7-200 (non-SMART) CPU?
A: No. The 6ES7222-1HF32-0XB0 uses the S7-200 SMART expansion bus connector and is not physically or electrically compatible with the classic S7-200 series.
Q: What is the maximum number of these modules per CPU?
A: Up to 6 expansion modules total (any mix of digital/analog I/O) per S7-200 SMART CPU, subject to the CPU’s 5 V bus current budget.
Q: Are the outputs sourcing (PNP) or sinking (NPN)?
A: Sourcing (PNP). The output terminal goes HIGH (24 V) when active. Loads are connected between the output terminal and the 0 V (M) rail.
Q: Is a separate 24 V supply required?
A: Yes. The load supply (24 V DC) must be provided by the user. The 5 V logic supply is drawn from the CPU expansion bus automatically.
Q: What programming software is required?
A: STEP 7-Micro/WIN SMART (free download from Siemens). No additional licensing is required for standard programming.
Q: Do you provide a warranty?
A: Yes — 12-month warranty against manufacturing defects. DOA (Dead on Arrival) units are replaced or refunded within 7 days of receipt.
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