Omron NT31-ST122B-EV2 NT Series Programmable Terminal

Description

Engineered for industrial human-machine interface applications, the Omron NT31-ST122B-EV2 serves as a rugged programmable terminal featuring a highly legible STN monochrome display. This HMI module supports versatile host communication protocols, facilitating real-time monitoring and control on automated factory floors. By integrating multiple serial interfaces, including dedicated RS-232C and selectable RS-422A/485 ports, this device bridges the gap between operators and PLC-driven machinery. The compact 5.7-inch design delivers dependable visual feedback and resistive touch matrix input, tailored for space-constrained operator panels.

Features

• 5.7-inch STN monochrome LCD display with blue mode visualization.
• Matrix resistive touch panel with 128 touch switches (8 x 16 layout) for reliable tactile response.
• Dual serial ports enabling flexible concurrent communication with host PLCs, temperature controllers, and barcode readers.
• Built-in printer port conforming to Centronics standards for direct report logging.
• 1 MB of internal flash memory to safeguard screen configuration and project data.
• NEMA 4/IP65 rated front panel construction, providing resilient protection against ingress of oil, dust, and water spray.

Applications

• Machine tool automation and diagnostic operator workstations.
• Conveyor and material handling control consoles.
• Packaging, labeling, and filling equipment interfaces.
• Water treatment, HVAC, and auxiliary system status displays.

Technical Specifications

Connections and Interfaces

Installation Guidelines

• Mount the programmable terminal directly onto a flat panel of thickness between 1.6 mm and 4.8 mm.
• Ensure an ambient operating temperature clearance of at least 50 mm around the back of the module to allow for adequate natural ventilation.
• Tighten the four included mounting brackets evenly with a maximum torque of 0.5 to 0.6 N-m to maintain IP65-rated front face sealing.
• Connect the Functional Ground (FG) terminal directly to a dedicated ground point of 100 ohms or less using minimum 2 mm sq. wire.
• Keep communication lines and signal cables routed away from high-voltage AC power lines to avoid electromagnetic interference.

Compliance and Certifications

• CE Mark
• UL Standards / cULus Listing