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B&R. 4PP420.0571-K15 (Power Panel 400 Series Unit with Integrated Power Supply Board)
- Basic Product Positioning
Full Model Number: 4PP420.0571-K15
Series Affiliation: Power Panel 400 (PP400) 5.7-inch All-in-One Industrial Touchscreen. The unit comes with a built-in integrated power supply board; le “Power Supply Board 400” you mentioned refers to this internal power sub-board.
Marque: B&R. (Autriche)
Statut du produit: Discontinued by original manufacturer; supplies mainly consist of stock spare parts and refurbished units for maintenance.
Répartition du code modèle
`4PP 420 . 0571 K15`
- 4PP: Power Panel 400 HMI product line
- 420: PP420 hardware platform for 5.7-inch units
- 0571: Hardware base designation – 5.7″ QVGA TFT resistive touch, CCFL backlight, with integrated aPCI slot
- K15: Configuration suffix
K: Industrial wide-temperature variant, standard 24 Alimentation VCC, horizontal mounting version
15: Standard memory & configuration des interfaces (128MB DDR, 2×USB, RS232, Ethernet port, CF card slot)
- Cœur Électrique Specifications of Unit & Integrated Power Supply Board
2.1 Entrée d'alimentation (Power Board Input Ratings)
Entrée nominale: 24 VCC (wide voltage range 18~30 VDC permitted)
Operating Current: 0.4A ~ 1.8A, typical power consumption 12W
Built-in Fuse: 125VCC / 10A fast-acting fuse (wear-prone component on power board)
Multi-channel Internal Outputs (power board feeds main unit): 3.3V / 5V / 12V / High voltage for backlight driver
Power Terminal Accessories: Ordered separately – 0TB103.9 (bornes à vis) / 0TB103.91 (spring cage terminals)
2.2 Main Unit Hardware Specifications
| Article | Paramètre |
| Afficher | 5.7″ Color TFT, QVGA 320×240, CCFL backlight |
| Touch Screen | 4-wire resistive touch panel, hardware calibration supported |
| Processeur | AMD Geode LX800 500MHz, fanless passive cooling |
| Mémoire | 128MB DDR SDRAM, 512KB SRAM |
| Stockage | Type I CompactFlash card slot |
| Communication | 10/100M Ethernet, RS232 D-Sub9, 2×USB2.0 |
| Expansion | 1×aPCI expansion slot |
| Indice de protection | Front panel IP65/NEMA4X, rear side IP20 |
| Dimensions | W 212mm × H 156mm × D 76~98mm |
| Poids | Environ. 1kilos |
| Température de fonctionnement | 0℃~+50℃ (K-suffix wide-temperature model: -20~70 ℃) |
- Structure & Common Fault Points of Integrated Power Supply Board
Mounting Position of Power Board
After removing the rear cover of the unit, the independent power supply area on the left side of the mainboard is the dedicated PP400 power supply board.
Integrated components: EMI filter, DC-DC step-down IC, backlight inverter circuit, fusible, energy storage backup capacitors, 950mAh mainboard backup lithium battery (3-year service life).
Typical Power Board Fault Matrix
| Symptôme de panne | Root Cause on Power Board | Maintenance Solution |
| No indicator light when powered on, black screen fails to boot | 1. Blown input fuse | Replace fuse, electrolytic capacitors and power management IC; test for short circuits on downstream circuits |
| 2. Bulging & leaking 24V filter capacitor | ||
| 3. Burnt main DC-DC chip | ||
| Screen flashes briefly then goes black, no backlight | Damaged backlight inverter boost coil / MOSFET | Replace components in backlight driver circuit |
| Boots normally but restarts frequently with voltage fluctuation | Degraded backup capacitors, cold solder joints on input terminals | Resolder terminals, replace buffer energy storage capacitors |
| System time lost, all parameters cleared after power off | Depleted mainboard backup lithium battery | Replace original Renata 950mAh battery |
| Unstable touch response, intermittent communication disconnection | Excessive ripple voltage from power board, failed filtering circuit | Replace all electrolytic capacitors on low-voltage output channels |
- Compatible & Replacement Models within the Same Series
4.1 Direct Drop-in Original Models with Identical Hardware Base (Fully interchangeable program & dimensions de montage)
4PP420.0571-K05 (basic low-end version, identical memory specification)
4PP420.0571-75 (standard original sales model without K wide-temperature suffix)
4.2 Standalone Power Board Spare Part Compatibility
Power supply boards for all 5.7-inch PP400 units are interchangeable: all 4PP420 models with 0571 hardware base share identical power boards.
Incompatible models: 4PP045 (4.3-pouce), 4PP650 (6.5-pouce) – differing power board dimensions and output circuits prevent cross-use.
4.3 Upgraded Replacement Units (Discontinued Product Generation Upgrade)
Nouveaux modèles: 4PP320.0571-K15 / 5PP420.0571 (Power Panel 300/500 Série; LED backlight replaces legacy CCFL, optimized power board architecture)
- Supporting Software & Programming Environment
- Logiciel de programmation: Automation Studio V4.0~V4.9 (higher versions incompatible with legacy PP400 hardware)
- Runtime System: Automation Runtime industrial real-time operating system
- Interfaces de communication: Ethernet TCP/IP and RS232 support connection to B&R X20/X60 controllers and third-party PLCs
- Firmware Repair Note: Abnormal power supply from the power board may corrupt CF card system files; re-flash firmware to restore project programs after power board maintenance.
- Scénarios d'application typiques
Plastic injection molding machines, machines textiles, packaging production lines, woodworking equipment, small production line control cabinets.
Suitable for compact installation space, 24VDC power supply and panel embedded mounting environments.
- Approvisionnement & Maintenance Instructions
- New Units: Discontinued by original manufacturer; only second-hand refurbished / dismantled complete units and standalone power board spare parts available on market.
- Key Maintenance Points: After power board replacement, full voltage testing of 3.3V/5V/12V outputs is mandatory; complete touch screen calibration and back up CF card project programs.
- Separately Orderable Spare Parts List: Complete power board assembly, CCFL backlight tubes, touch glass panel, CF card, power supply terminals, backup lithium battery
