Isolated Serial Port HMI
Overview
The Samkoon SK-070QI is a 7-inch industrial HMI specifically engineered for harsh electrical environments with high electromagnetic interference (EMI). Featuring built-in optical isolation on its serial interfaces, the terminal electrically separates its internal processing circuits from external connected field devices. This configuration suppresses common-mode interference, breaks ground loops, and protects the controller from voltage spikes, static charges, and harmonic distortions, ensuring stable communication and extended equipment lifespan.
Product Features
Optoelectronic Serial Interface Isolation
Both COM1 (RS232) and COM2 (RS485) are equipped with independent, high-speed optoelectronic isolation barriers. By blocking ground loop currents and transient voltage surges up to , this design ensures uninterrupted serial data exchange even in proximity to high-frequency variable frequency drives (VFDs).
Vertical Interface Layout for Enclosure Optimization
The unique vertical cable outlet layout optimizes cabinet wiring space, reduces physical strain and bending wear on communication cables, and allows for more compact control enclosure designs with easier terminal access.
Stable Linux-based Real-time Platform
Built on a robust, lightweight Linux OS paired with a high-performance Cortex-A7 Dual-Core 1.0 GHz processor. This industrial-grade architecture guarantees deterministic task execution, fast boot-up times, secure multi-tasking, and immunity to typical OS crashes.
Industrial-grade Environmental Protection
Housed in a rugged, dust-proof casing with an IP65-rated front panel resistant to direct water sprays. The fanless cooling design enables continuous, reliable operation under a wide temperature range of -20℃ to 50℃ .
Specifications
Naming Rule
- Selection Guidance: The Samkoon SK-G nomenclature structure identifies high-performance hardware variants based on display size scale, physical port boundaries, and embedded networking modules. Review the comprehensive technical parameters below to select the optimized edge computing layout for your hardware setup.
Models & Specifications
| Model | SK-070QI | |
| Structure and environment | Size(mm) | 203 × 145 × 35 |
| Cutout size (mm) | 192 × 138 | |
| Display size (mm) | 7″(16:9) | |
| Weight (g) | 543 | |
| Working temperature | -20°C~55°C (no freezing) | |
| Working humidity | 5~95% (non-condensing) | |
| Shock resistance | 10 ~ 25HZ (XYZ direction 2G/30 minutes) | |
| Shell material | Engineering plastic ABS+PC | |
| Power supply | Power consumption (W) | 4 |
| Power supply voltage | (DC12~24V)±15% | |
| Static level | ±6kV | |
| Display | Resolution（PX） | 800×480 |
| Contrast | 400:1 | |
| Brightness（cd/㎡） | 450 | |
| Touch panel | 4-wire high precision touch panel | |
| Display colors | 16.77 million | |
| Backlight Module | LED | |
| Hardware | Storage | 128MB DDR3 |
| CPU | Cortex A7 1GHz. Dual Core | |
| RAM | 128MB FLASH | |
| Interface | Network interface | 1x RJ45 |
| USB download port | 1x Type C | |
| USB interface | 1x Type A | |
| Serial interface | COM1: RS232 (insulated) | COM2: RS485 (insulated) | |
| Compliance, Protection & Software | FCC Compatibility | Complies with FCC, Class A |
| Withstand voltage test | 1000V AC, 1 minute | |
| CE certification | Comply with EN55032 and EN55035 standards | |
| Protection class | IP65(front panel） | |
| Configuration Software | SKTOOL | |
