Yokogawa PWB51549B DCS Panel TFT LCD Display Board Module

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Yokogawa PWB51549B TFT LCD Display Board The Yokogawa PWB51549B, also cataloged as the PWB51549B TFT LCD Display Board, operates as...

رمز المنتج: PWB51549B

Manufacturer: Yokogawa
Product No.: PWB51549B
Product Type: LCD Display Boards
Product Origin: JAPAN
Payment:T/T, Western Union
Weight: 300g
Shipping port: Xiamen
Warranty: 12 months

وصف التقييمات

Yokogawa PWB51549B TFT LCD Display Board

The Yokogawa PWB51549B, also cataloged as the PWB51549B TFT LCD Display Board, operates as a dedicated hardware component for converting CPU digital graphic outputs into LVDS signal driving data within Yokogawa CENTUM DCS operator interface platforms. Mounted directly within human-machine interface (HMI) chassis or station panels, the assembly routes power and video bus signals to render real-time process diagrams, alarm vectors, and diagnostic telemetry. It accepts a nominal 24 VDC feed, generating driver logic and LED backlight voltages required for industrial visualization.

Hardware Specifications

Parameter	Specification
Model	PWB51549B
Brand	Yokogawa
Origin	Japan / China
Weight	0.3 kg
Dimensions	150 x 120 x 20 mm
Operating Temp	-10 deg C to +60 deg C
Storage Temp	-20 deg C to +80 deg C
Relative Humidity	10-90 % RH (non-condensing)
Power Consumption	~7 W
Input Voltage	24 VDC nominal (19-30 VDC operating range)
Display Technology	TFT LCD with LED Backlight
Resolution	800 x 480 pixels
Color Depth	24-bit true color
Viewing Angle	160 deg horizontal / 140 deg vertical
Luminance	400 cd/m2 typical
Refresh Rate	60 Hz
Signal Interface	LVDS / Digital signal interface
Compliance	CE, RoHS, IEC standards

DCS Graphic Bus Interface and Signal Integrity

The Yokogawa PWB51549B uses dedicated LVDS pathways to minimize high-frequency electromagnetic interference across panel enclosures. Yokogawa DCS display controllers distribute process telemetry through differential signaling lines, maintaining stable video refresh rates at 60 Hz without data loss. Internal noise filters guard pixel timing clocks against industrial power surges and switching transients typical of control room backplanes. Furthermore, integrated channel-to-channel power isolation prevents ground potential shifts between the internal 24 VDC bus and external display logic.

Frequently Asked Questions

Q: What input power characteristics does the PWB51549B require for stable backlight illumination?

A: The board requires a 24 VDC nominal power source with an allowable operational tolerance between 19 VDC and 30 VDC. Voltage drops below 19 VDC cause backlight flickering or display shutdown, whereas sustained overvoltage exceeding 30 VDC trips internal protective fuses.

Q: Can the PWB51549B display board be hot-swapped while the DCS operator panel is energized?

A: No, hot-swapping the board under power is strictly prohibited. You must remove the main 24 VDC supply feed to the display housing prior to disconnecting or reconnecting the LVDS ribbon cable to prevent latch-up or silicon damage on the driver ICs.

Q: How does the module handle signal noise in high-vibration control panel installations?

A: The PWB51549B relies on differential LVDS logic signals and low-impedance ground planes. Differential signaling cancels common-mode noise generated by adjacent industrial wiring, maintaining display clarity and preventing frame buffer corruption.

Field Installation Guidelines

First, turn off all main power sources supplying the target operator console before starting physical installation. Discharge any static buildup by attaching a grounded ESD wrist strap to a verified metal chassis ground point.

Next, mount the PWB51549B into the display bracket using standard M3 retaining screws. Torque all mounting fasteners evenly to 0.5 Nm to avoid mechanical stress on the printed circuit board substrate.

Then, route the LVDS ribbon cable away from high-voltage AC power lines and relay switching wires. Keep cable bend radii above 25 mm to prevent conductor fatigue. Ensure the locking tabs on the connector fully engage to prevent accidental disconnection caused by continuous machine vibration.

Finally, connect the 24 VDC power supply harness, verifying correct polarity at the terminal block. Reapply power to the panel and observe the onboard status LEDs to verify proper boot sequence and logic synchronization before locking the enclosure door.

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