Omron NT31-ST122B-EV2 NT Series Programmable Terminal

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Manufacturer: Omron
Product No.: NT31-ST122B-EV2
Country of origin:Japan
Product Type: Programmable Terminals
Payment: T/T, Western Union
Weight: 1000g
Dimensions: 195 x 142 x 54 mm
Shipping port: Xiamen
Warranty: 12 months

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

Manufacturer	Omron
Part Number/Model	NT31-ST122B-EV2
Series	NT Series
Display Type	STN monochrome LCD (blue mode)
Display Resolution	320 x 240 dots
Effective Display Area	115.2 x 86.4 mm
Backlight Type	Cold cathode fluorescent lamp (CCFL)
Rated Power Supply Voltage	24 VDC
Allowable Voltage Range	20.4 VDC to 26.4 VDC
Power Consumption	15 W maximum
Screen Memory Capacity	1 MB (Flash memory)
Touch Panel Type	Resistive matrix (8 rows x 16 columns)
Operating Temperature	0 to 50 degC
Storage Temperature	-20 to 60 degC
Ambient Operating Humidity	35% to 85% RH (non-condensing)
Degree of Protection	IP65 equivalent (front panel only)
Dimensions (W x H x D)	195 x 142 x 54 mm
Panel Cutout Dimensions	184 x 131 mm
Weight	Approx. 1 kg

Connections and Interfaces

Interface Port	Connector Type	Supported Signal / Protocol Standards
Serial Port A	D-Sub 9-pin (female)	RS-232C only (Host connection, Barcode reader, Support Tool)
Serial Port B	D-Sub 25-pin (female)	Selectable RS-232C, RS-422A, or RS-485 (Host connection)
Printer Port	D-Sub 9-pin (female)	Centronics-compliant printer interface

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

Key Features:

#Omron NT Series #Programmable Terminals

What is the primary display type of the Omron NT31-ST122B-EV2?

The NT31-ST122B-EV2 features a 5.7-inch STN monochrome LCD display (blue mode) with a resolution of 320 x 240 dots.

What communication interfaces are built into this programmable terminal?

It features Serial Port A (RS-232C), Serial Port B (configurable for RS-232C, RS-422A, or RS-485), and a dedicated printer port.

What is the power supply requirement for the NT31-ST122B-EV2?

The module requires a rated 24 VDC power supply, with an allowable voltage range of 20.4 VDC to 26.4 VDC, and has a maximum power consumption of 15 W.

Does the unit support outdoor or wet environment installations?

The front panel has an IP65-equivalent protection rating when mounted with proper sealing, making it resistant to dust and water splashes, but it is recommended for indoor industrial environments.

Global Express Shipping

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Express Dispatch: Same-day dispatch for in-stock orders placed before 2:00 PM (GMT+8).
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Returns & Warranty

30-Day Guarantee: Returns accepted for in-stock products in original, factory-sealed packaging.
12-Month Warranty: Every industrial component is backed by our professional technical warranty.

Orders are processed and delivered Monday-Friday (excluding public holidays).

For full eligibility, restocking fees, and international return details, please view our official Refund & Return Policy .

TECHNICAL SPECIFICATIONS

Country of origin

Omron NT31-ST122B-EV2 NT Series Programmable Terminal