Product Overview
The Yokogawa AS-F9391CD-0 serves as the display interface board for operator station terminals. This PCB drives visual output on LCD screens and handles front panel button inputs. It bridges communication between the main processor and the user interface. The unit fits into Yokogawa CENTUM operator station hardware assemblies.
Technical Specifications
| Parameter | Specification |
|---|---|
| Model Number | AS-F9391CD-0 |
| Product Type | Display PCB Circuit Board |
| Display Interface | LCD flat-panel connector |
| Input Interface | Front panel button matrix |
| Communication Bus | System I²C and parallel interface |
| Onboard Components | Display controller, voltage regulators, capacitors |
| Number of Connectors | 3 header connectors |
| Power Supply | 5 VDC and 3.3 VDC onboard regulation |
| Power Dissipation | 2.5 W typical |
| PCB Material | FR-4 glass epoxy |
| Operating Temperature | 0°C to 55°C |
| Storage Temperature | –20°C to 70°C |
| Humidity Tolerance | 10% to 90% non-condensing |
Physical Characteristics and Construction
This PCB measures approximately 180 mm in width and 120 mm in height. The board weighs roughly 0.18 kg with all components installed. It uses FR-4 glass epoxy material with ENIG surface finish. The PCB includes mounting holes at four corners for secure attachment. The layout follows high-density surface-mount design with clearly labeled test points.
Electrical Interface and Component Layout
The AS-F9391CD-0 includes a display controller chip that drives LCD panel signals. It features onboard voltage regulators that convert the main supply to 3.3 V and 5 V. Multiple electrolytic capacitors provide energy storage for stable voltage during transients. A 16-pin header connects to the front panel button membrane. Two additional headers link to the main processor board for data exchange. The board also includes brightness control circuitry for display backlight adjustment.
Performance and Display Handling
The PCB handles display refresh rates up to 60 Hz for smooth visual output. It processes button inputs with negligible latency for responsive operator interaction. The board incorporates ESD protection devices on all external connectors. These devices safeguard against electrostatic discharge during panel operation. The display controller supports standard resolution LCD panels used in CENTUM stations.
Installation and System Integration
You can install this board into the designated display housing within operator consoles. The mounting holes align with factory-standard standoffs in the enclosure. Always connect the ribbon cables according to the silk-screen markings on the board. Verify that the voltage selection jumpers match your system power configuration. Handle the PCB with care to avoid damaging surface-mount components.
Environmental Protection
The PCB includes conformal coating for moisture and dust resistance. This coating protects traces and components from environmental exposure. The board meets RoHS requirements for hazardous substance restrictions. The materials comply with standard industrial electronic safety specifications.
Details
| Weight | 0.35 kg |
|---|---|
| Dimensions | 130 × 40 × 120 mm |
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