MITA WP Series HMI Modules: WP4051

Technical Dossier

Product Details And Specifications

MITA WP Series: Comprehensive HMI Module Range and Technical Overview

The MITA WP Series represents one of the most widely deployed Human-Machine Interface (HMI) platforms in heavy industrial environments across Asia-Pacific, the Middle East, and Eastern Europe. Installed in chemical processing plants, petroleum refineries, nuclear auxiliary control rooms, and large-scale water treatment facilities, the WP Series established MITA's position as a tier-one HMI supplier for distributed control system (DCS) front-end visualization. The WP4051 is a mid-range color touch panel within this series, designed for panel-mount integration in NEMA-rated enclosures. Its resistive touch technology, industrial-grade display, and serial/Ethernet communication stack made it a standard specification item for system integrators working with Yokogawa CENTUM, Honeywell TDC, and Siemens PCS 7 environments during the 2000s–2010s deployment cycle.

The Evolution of WP Series Architecture

The MITA WP Series evolved through three distinct hardware generations. The first generation (WP2000 sub-series) used passive-matrix LCD panels with RS-232/RS-485 serial-only communication, targeting legacy relay-logic replacement projects. The second generation (WP3000/WP4000 sub-series) introduced active-matrix TFT color displays, resistive touch overlays, and dual-port Ethernet alongside retained serial interfaces — enabling simultaneous connection to both legacy PLCs and modern DCS historians. The WP4051 belongs to this second generation, featuring a 10.4-inch TFT display, 800×600 SVGA resolution, and support for Modbus RTU/TCP, MELSEC, and OMRON Host Link protocols. The third generation (WP5000/WP6000 sub-series) transitioned to projected capacitive (PCAP) touch, ARM Cortex-A processors, and OPC-UA native stacks, rendering the WP4000 sub-series functionally obsolete for new projects but sustaining high demand for maintenance and replacement in installed-base applications. Compatibility between generations is limited: WP4000-series project files require conversion utilities to migrate to WP5000 targets, and backplane mounting dimensions differ between sub-series, making direct physical substitution non-trivial.

WP Series Full Catalog & Functionalities (SKU List)

The following SKUs represent verified models within the MITA WP Series. Each entry reflects a distinct hardware configuration or communication variant:

WP2031: 5.7-inch STN monochrome, RS-232/RS-485, 320×240, panel-mount HMI.
WP2051: 10.4-inch STN monochrome, RS-232/RS-485, 640×480, legacy serial HMI.
WP3031: 5.7-inch TFT color, RS-232/RS-485 + Ethernet, 320×240, first-gen color panel.
WP3051: 10.4-inch TFT color, RS-232/RS-485 + Ethernet, 640×480, mid-range color HMI.
WP4031: 5.7-inch TFT color, dual Ethernet + serial, 640×480, compact industrial HMI.
WP4041: 8.4-inch TFT color, dual Ethernet + serial, 800×600, medium-format panel HMI.
WP4051: 10.4-inch TFT color, dual Ethernet + RS-232/RS-485, 800×600, standard industrial HMI.
WP4061: 12.1-inch TFT color, dual Ethernet + serial, 1024×768, large-format panel HMI.
WP4071: 15-inch TFT color, dual Ethernet + serial, 1024×768, wide-format control room HMI.
WP4051T: WP4051 variant with extended temperature range (-20°C to +60°C) for outdoor enclosures.
WP4051S: WP4051 variant with stainless steel front bezel for food/pharma washdown environments.
WP5031: 5.7-inch PCAP touch, ARM Cortex-A, OPC-UA, 800×480, third-gen compact HMI.
WP5051: 10.4-inch PCAP touch, ARM Cortex-A, OPC-UA + Modbus TCP, 1024×768, third-gen standard HMI.
WP5061: 12.1-inch PCAP touch, ARM Cortex-A, OPC-UA, 1280×800, third-gen large HMI.
WP6071: 15.6-inch PCAP touch, quad-core ARM, OPC-UA + MQTT, 1920×1080 FHD, flagship industrial HMI.
WP4051-CF: WP4051 with CompactFlash expansion slot for extended recipe/data logging storage.
WP4051-UL: WP4051 UL 508-listed variant for North American panel certification requirements.

Sourcing Hard-to-Find & Obsolete WP Series Parts

The WP2000 and WP3000 sub-series have been formally discontinued by MITA, with the WP4000 sub-series — including the WP4051 — classified as mature/end-of-active-production. OEM lead times for WP4051 units through standard distribution channels are extended or unavailable. DriveKNMS maintains a dedicated inventory of tested WP Series units sourced through authorized secondary-market channels, decommissioned plant asset liquidations, and OEM overstock programs. For operators running WP4051 panels in long-lifecycle DCS environments (15–25 year plant cycles), DriveKNMS provides lifecycle extension support including: verified replacement units with full functional test reports, display backlight and touch overlay sub-assembly replacement, firmware version matching to ensure compatibility with existing project files, and exchange programs where a defective unit is returned against a tested replacement to minimize downtime. All WP4051 units shipped by DriveKNMS include a 12-month warranty against hardware failure under normal operating conditions.

Quality Control for the WP Series Range

MITA WP Series panels present specific quality verification challenges due to their integrated display, touch, and communication subsystems. DriveKNMS applies a structured test protocol to all WP Series units prior to dispatch. Display verification covers full-screen color uniformity, pixel defect mapping (ISO 13406-2 Class II standard), and backlight luminance measurement. Touch calibration is performed using a 25-point grid test to verify resistive overlay linearity and pressure sensitivity across the full active area. Communication port testing covers RS-232 and RS-485 loopback at 9600–115200 baud, and Ethernet port verification at 10/100 Mbps with ICMP and Modbus TCP transaction testing. Internal memory and CompactFlash (where fitted) are verified for read/write integrity. Each unit is powered for a minimum 4-hour burn-in cycle at 45°C ambient to screen for early-life component failures. A test report is issued with each unit, documenting all measured parameters.