Omron NX-RS1201 NX Series Load Cell Input Unit

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Manufacturer: Omron
Product No.: NXRS1201
Country of origin:Япония
Product Type: Load Cell Input Units
Payment: T/T, Western Union
Weight: 70g
Dimensions: 12 mm x 100 mm x 71 mm
Shipping port: Xiamen
Warranty: 12 months

Description

Engineered for high-speed, high-accuracy weighing applications, the Omron NX-RS1201 operates as a high-performance weight and force measurement module within the Sysmac automation platform. This high-performance module interfaces directly with strain-gauge load cells, converting raw analog force signals into highly precise digital data. Designed for seamless integration into EtherCAT and EtherNet/IP networks via NX-series coupler units, the Omron NX-RS1201 features an ultra-fast conversion cycle of 125 microseconds and a 24-bit A/D converter. Its support for Synchronous I/O refreshing allows exact timing coordination with motion control processes, making it highly effective for dynamic checkweighers, filling systems, and tension control applications.

Key Features

Ultra-precise 24-bit analog-to-digital conversion resolution.
High-speed 125-microsecond conversion cycle for real-time force measurement.
Flexible I/O refreshing options including Synchronous, Free-Run, and Task Period Prioritized refreshing.
Built-in stable 5 VDC (+/- 10%) load cell excitation voltage output.
Space-saving 12 mm wide profile to minimize DIN rail footprint.
Vibration-resistant screwless push-in clamping terminal block (16 points) for rapid field installation.

Applications

High-speed industrial checkweighers and packaging machinery.
Continuous filling, dosing, and batching systems.
Web tension measurement and winding control in paper and film processing.
Material testing machines and press-fit force monitoring systems.

Technical Specifications

Specification Parameter	Value / Rating
Manufacturer	Omron
Model Number	NX-RS1201
Product Type	Load Cell Input Unit
Number of Points	1 Channel
A/D Converter Resolution	24 bits
Conversion Cycle	125 microseconds
Input Range	-5.0 to 5.0 mV/V
Input Conversion Range	-5.5 to 5.5 mV/V
Load Cell Excitation Voltage	5 VDC (+/- 10%), 60 mA maximum output current
Zero / Gain Adjustment Range	-5.0 to 5.0 mV/V
Nonlinearity	+/-0.01% of full scale
Zero Drift	+/-0.1 microvolt per degC RTI (Refer to Input)
Gain Drift	+/-10 ppm per degC
Warm-Up Period	30 minutes minimum
External Connection Terminals	Screwless clamping terminal block (16 terminals)
Dimensions (W x H x D)	12 mm x 100 mm x 71 mm
Product Weight	0.07 kg
Shipping Weight (Calculated)	1.00 kg (including protective packaging)
Country of Origin	Japan

Empirical Engineering Insights

Alternative Models & Compatibility

The NX-RS1201 is fully integrated into the Omron Sysmac platform via NX-series Bus Couplers. When replacing legacy analog input modules, ensure that the target Sysmac Studio project configuration is updated to support this unit's 24-bit output structure. Firmware compatibility must be verified with the controller unit: an NJ-series, NX-series, or NY-series controller requires firmware version 1.10 or higher for full Synchronous I/O operational modes.

Application Pitfalls & Engineering Notes

Because of its ultra-high resolution, the 24-bit A/D converter is highly sensitive to ambient temperature changes. For applications requiring precise measurements, the module requires a full 30-minute warm-up period to stabilize thermal drift coefficients. If the control panel is located near heat-generating equipment (such as variable frequency drives or large transformers), forced ventilation is highly recommended to maintain a steady ambient temperature and prevent drift.

Commissioning & Wiring Tips

To maintain maximum measurement integrity, avoid running the load cell signal cables in parallel with high-voltage AC power lines. Utilize double-shielded, twisted-pair cables for excitation and signal paths. The cable shield must be terminated at a single point—preferably at the functional ground terminal of the NX-series system—to prevent ground loops that introduce electrical noise to the microvolt-level inputs.

Installation Guidelines

CRITICAL SAFETY WARNING

Turn off all power supplies to the PLC rack and field devices before installing, removing, or wiring the module. Failure to de-energize equipment can result in electrical shock, equipment damage, or erratic system behavior.

Align the guide hooks on the side of the NX-RS1201 with the adjacent module or bus coupler, then slide the unit onto the DIN rail until it clicks securely into place.

Strip the load cell connection wires to the recommended length (typically 8 to 10 mm) and insert them directly into the push-in screwless clamp terminals. Ensure the Excitation (+/-) and Signal (+/-) polarities match your load cell specifications.

Connect the functional ground wire to the designated grounding terminal and apply power to the system. Allow the unit to warm up for 30 minutes before executing the zero-point and span calibration through Sysmac Studio.

Key Features:

#Load Cell Input Units #Omron NX Series

What is the resolution of the A/D converter on the NX-RS1201?

The module is equipped with a high-performance 24-bit A/D converter, providing superior resolution for microvolt-level force and weight measurement.

How fast is the conversion cycle for this load cell module?

The unit features an ultra-fast conversion cycle of 125 microseconds, making it suitable for dynamic and high-speed weighing systems.

Does this module require a specific warm-up period before calibration?

Yes, to ensure accurate measurement and minimize thermal drift errors, a minimum warm-up period of 30 minutes is required after power-up.

What type of terminals are used for field connections?

It utilizes a 16-point screwless clamping terminal block, facilitating reliable, tool-free wiring that is highly resistant to industrial vibrations.

Глобална експресна доставка

Стандартна доставка: 4-6 работни дни чрез DHL, FedEx и UPS.
Експресна изпращане: Изпращане в същия ден за налични поръчки, направени преди 14:00 ч. (GMT+8).
Глобално покритие: Обслужваме над 150 държави, включително бърза доставка до Саудитска Арабия и ОАЕ.

Връщания и гаранция

30-дневна гаранция: Връщания се приемат за налични продукти в оригинална, фабрично запечатана опаковка.
12-месечна гаранция: Всеки индустриален компонент е подкрепен с нашата професионална техническа гаранция.

Поръчките се обработват и доставят от понеделник до петък (с изключение на официалните празници).

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