Omron NX-RS1201 NX Series Load Cell Input Module

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تولیدکننده: Omron
شماره محصول: NX-RS1201
کشور سازنده:ژاپن
نوع محصول: Load Cell Input Modules
پرداخت: حواله بانکی (T/T)، وسترن یونیون
وزن: 2000g
بندر حمل و نقل: شیامن
گارانتی: ۱۲ ماه

Description

High-speed, high-resolution force and weight measurements are integrated directly into the Sysmac automation platform using the Omron NX-RS1201 load cell input unit. Designed for microvolt-level signal acquisition over the NX I/O Bus, this module features a high-precision 24-bit differential input circuit to handle delicate strain gauge signals in real time. Optimized for synchronous execution, it delivers a conversion time of 0.125 ms per unit, making it suitable for dynamic weighing systems, packaging lines, and industrial stress-testing equipment requiring rapid response times.

Product Features

24-Bit ADC Resolution: Offers excellent signal clarity to capture minute variations in load cell tension or force.
High-Speed 0.125 ms Conversion: Delivers high-speed sampling for dynamic, real-time weighing applications.
Synchronous I/O refreshing: Synchronizes with the EtherCAT master clock to guarantee deterministic automation cycles.
Push-In Plus Terminals: Enables screwless, vibration-resistant, and tools-free field wiring.
Compact Form Factor: Standard 12 mm width optimizes DIN-rail space within control panels.

Applications

Dynamic filling, bagging, and multi-head weighing systems in packaging environments.
Tension control and feedback loops in web handling, printing, and winding machinery.
Real-time force and torque measurement in press-fitting and structural component assembly.
Hopper, silo, and platform scale integrations within chemical batching systems.

Technical Specifications

Parameter	Specification Value
Manufacturer	Omron Industrial Automation
Model Number	NX-RS1201
I/O System	NX Bus System (EtherCAT or EtherNet/IP Couplers)
Input Type	Differential strain gauge / load cell input
Analog Input Resolution	24-bit
Conversion Time	0.125 ms/unit
Refresh Mode	Free-running or Synchronous I/O refreshing
Field Connection	Push-In Plus Terminal (Screwless)
Degree of Protection	IP20
Operating Temperature	0 to 55 degC
Module Weight	0.07 kg
Shipping Weight (Calculated)	2.0 kg

Connections and Interfaces

Terminal Position	Signal Name	Circuit Assignment / Function
EXC+	Bridge Excitation Voltage (+)	Load cell positive supply terminal
EXC-	Bridge Excitation Voltage (-)	Load cell negative supply terminal
SIG+	Signal Input (+)	Positive measurement feedback channel
SIG-	Signal Input (-)	Negative measurement feedback channel
S+ / S-	Sense Lines (Optional)	6-wire remote sensing compensation feedback
SHLD	Shield Terminal	Functional ground connection for noise drain

Empirical Engineering Insights

Alternative Models & Compatibility: The NX-RS1201 is designed to operate seamlessly within any standard Sysmac EtherCAT coupler (such as the NX-ECC203) or EtherNet/IP bus coupler. Always ensure that the Sysmac Studio platform is updated to a software version that supports this specific module unit version to avoid parameter configuration mismatches during hardware registration.

Application Pitfalls & Engineering Notes: Because strain gauge bridge signals operate at microvolt-per-volt levels, they are susceptible to electromagnetic interference (EMI). Route all cabling from the load cells separate from three-phase motor lines and variable frequency drives (VFDs) to prevent signal drift. For systems utilizing multiple load cells in a single application, an external junction summing box must be installed before running a single structured cable to the module inputs.

Commissioning & Wiring Tips: Utilize high-quality shielded twisted-pair (STP) cabling for the load cell connection. For cable run distances exceeding 5 meters, it is recommended to configure a 6-wire load cell connection using the EXC and SENSE feedback loops; this dynamically offsets voltage losses over long distances, preserving the module's 24-bit measurement integrity.

Installation Guidelines

CRITICAL WARNING: De-energize all power sources supplying the host NX-bus terminal and the auxiliary field devices prior to inserting or withdrawing the physical NX-RS1201 module. Failure to do so can result in system bus communication disruptions, potential hardware damage, or unpredictable module states.

DIN-Rail Mounting: Mount the bus coupler and adjacent modules, then slide the NX-RS1201 unit firmly onto the DIN-rail, ensuring that the lateral bus connectors mate properly with the neighboring modules.

Signal Cable Connection: Strip the load cell signal leads to the recommended 10 mm length and insert them directly into the Push-In Plus terminal block. Tug gently to confirm a secure mechanical connection.

Shield Grounding: Terminate the load cell cable shield directly at the functional ground terminal block or SHLD pin to drain high-frequency noise away from the measurement circuity.

Key Features:

#Load Cell Input Modules #Omron NX Series

What is the excitation voltage specification for the NX-RS1201 load cell module?

The module provides a stable 5 VDC excitation output to power up to four strain gauge load cells connected in parallel.

Does the NX-RS1201 support 4-wire or 6-wire load cell connections?

It natively supports both 4-wire and 6-wire configurations. The 6-wire connection is recommended for long cable runs to compensate for line resistance voltage drops.

How do you perform zero calibration on this unit within the PLC program?

Zero and span calibrations are executed by sending specific administrative commands to the unit's command area or via acyclic CIP messages, updating the internal parameters.

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TECHNICAL SPECIFICATIONS

Country of origin

Omron NX-RS1201 NX Series Load Cell Input Module