Industrial Panel PC Product

Overview

An industrial panel PC is a computer and touchscreen fused into one sealed unit, designed to live flush-mounted in the door of a machine cabinet or on a swing arm beside a production line. It runs the human-machine interface (HMI) for the equipment behind it — visualizing the process, accepting operator commands, logging data — and is expected to do so continuously for ten years or more in an environment of dust, vibration, coolant mist, and electrical noise that would kill an office PC in months.

Every subsystem reflects that environment. The Compute Board uses a low-power SoC so the Heatsink Chassis can cool it with fins alone; the Display Stack is optically bonded behind strengthened glass; the Front Bezel seals the cabinet cutout to IP65; and the Expansion I/O section speaks the serial and 24 V digital dialects of factory equipment that predates Ethernet.

How it works

The machine builder cuts a rectangular opening in the cabinet door, drops the panel PC in from the front, and tightens the Panel Clamp set from behind. The clamps compress the Front Gasket between the Bezel Frame and the sheet metal, so the door face — glass, bezel, gasket — forms a continuous IP65 barrier. Jets from a washdown hose or a cloud of conductive grinding dust stay outside; the electronics behind the door see only cabinet air. A Membrane Vent lets the sealed interior breathe through a hydrophobic membrane so temperature swings cannot pump moisture past the gasket.

Power comes not from a mains cord but from the cabinet's existing 24 V DC control supply through the DC Input Block block. The Protection Stage absorbs the surges, dips, and reverse-wiring accidents standard EN 61000-6-2 assumes, and the isolated DC-DC Converter breaks ground loops between the PC and the field wiring. A supervisor Microcontroller watches a hardware watchdog: if the HMI application or OS hangs, it power-cycles the system without a technician visit.

Cooling without a fan

Fans are the first component to fail in dirty air, so the design eliminates them. The SoC is chosen for a 6–15 W thermal envelope and pressed against the Heat Spreader through a Thermal Pad; heat conducts into the Finned Rear Casting casting and leaves by natural convection and radiation. The whole rear housing is the heatsink, which is why panel PCs run noticeably warm to the touch — by design, the case surface may sit 15–20 K above ambient at full load. The same logic drives component selection inboard: soldered Soldered DRAM instead of socketed modules that fret loose under vibration, an Industrial SSD with power-loss capacitors instead of a spinning disk, and electrolytic-free regulation rated for the −20 to +60 °C span.

Field interfaces

Factory equipment communicates in layers of legacy. The four Serial Port channels handle RS-232 barcode scanners and RS-485 Modbus chains to drives and meters. The DIO Bank reads 24 V signals from pushbuttons and limit switches and drives stack lights or interlocks through its Relay outputs, all behind the Isolation Barrier so a miswired solenoid cannot lift the compute board's ground. For real-time fieldbuses the Expansion Socket accepts PROFINET, EtherCAT, or CANopen cards, letting the same chassis act as a soft PLC. Two LAN Port jacks keep the plant network and the machine network physically separate, a common OT security requirement, and the TPM Module anchors secure boot on networks that increasingly demand IEC 62443 hardening.

Display and touch

Operators use the screen with gloves, often with wet or dirty hands, under bright hall lighting. The Touch Digitizer controller is tuned to register a gloved fingertip while rejecting water films and false palm contact. The Optical Bonding Layer of optically clear adhesive between the LCD Panel and the Cover Glass removes the internal air gap, which roughly halves reflected glare, stiffens the stack against impact, and prevents condensation fogging between layers. A 400 cd/m² backlight, dimmable through the Backlight Driver, keeps the HMI readable at noon and tolerable on a night shift.