I. Product Specifications
Complete Model Number: HIMAX X‑CPU 31 985210246
Rated Power: 5.5kW
Input Specifications: Three-phase 380-480VAC, 50/60Hz
Output Specifications: Three-phase 0-480VAC
Control Modes: V/F open-loop control, sensorless vector control, supports asynchronous motors and permanent magnet synchronous motors
Carrier Frequency: Adjustable, up to 12kHz
I/O Interfaces: Multiple analog input/output channels, digital DI/DO, relay fault output
Communication Interfaces: RS485 Modbus-RTU, Ethernet Modbus-TCP
Protection Rating: IP20 (cabinet mounting)
Operating Ambient Temperature: 0℃～+50℃; maximum derating 55℃
Relative Humidity: 5%-95%, non-condensing
Cooling Method: Air-cooled
Installation Method: Wall-mounted control cabinet
Certification: CE, compliant with IEC61800-9 energy efficiency standard
II. Product Overview
The X‑CPU 31 985210246 is a Vernova LV7000-3 series industrial low-voltage frequency converter, mainly used for three-phase motor speed control drive, compatible with asynchronous induction motors and permanent magnet synchronous motors. The device features high-performance vector control capabilities, integrated rich I/O and dual communication interfaces, supports local panel operation and remote control via a host computer, and can realize speed regulation, fault alarm, and operation status upload. It is widely used in industrial applications such as fans, pumps, and conveying equipment, and is a core spare part for the maintenance and replacement of existing GE LV7000 series equipment.
III. Functional Features
Supports multiple control modes including V/F and sensorless vector control, stable low-speed torque output, and is compatible with asynchronous motors and permanent magnet synchronous motors.
Comprehensive hardware protection: Overcurrent, overvoltage, undervoltage, overheat, output short circuit, grounding fault, and motor overload protection; faults are automatically latched and output with fault codes.
Configured with multiple analog and digital I/O channels and relay alarm outputs for easy connection to field sensors and equipment interlocking circuits.
Dual communication architecture: RS485 Modbus-RTU + Ethernet Modbus-TCP, facilitating connection to various automation control systems.
Built-in fault event storage saves fault codes and operating data for easy fault tracing and analysis.
Supports multiple sets of parameter storage with quick switching to adapt to different process conditions.
Equipped with a local operation panel for local parameter setting, reading operating data, and viewing fault information.
IV. Functional Features
Modular hardware design; power units, control boards, and communication options are independent, facilitating future maintenance and repair.
High overall conversion efficiency, meeting IEC61800-9 energy efficiency standards, suitable for energy-saving retrofitting of water pumps and fans.
The operation panel is removable and can be installed in an external cabinet; supports backup and copying of all unit parameters.
The fan assembly is independently detachable for easy on-site replacement and maintenance.
It features adjustable acceleration/deceleration time, current limiting, and stall prevention functions, adapting to complex load conditions.
V. Applications and Operation
Typical Applications
Factory fans, pumps, and circulating water systems with frequency conversion energy-saving speed control.
Three-phase motor speed control for conveyors, mixers, and processing equipment.
Motor drives for complete sets of equipment in water treatment, chemical, and metallurgical industries.
Complete replacement and major overhaul projects for existing GE LV7000 equipment.
Operating Instructions
Installation: Wall-mounted inside the control cabinet, strictly following the instructions to reserve sufficient clearance for heat dissipation and ventilation.
Wiring: Connect the main circuit to the three-phase power supply, and connect the output to the motor; connect the control circuit to the I/O signal and communication network cable, ensuring reliable grounding.
Parameter Settings: Enter the motor nameplate parameters through the unit panel or debugging software, and configure the control mode, acceleration/deceleration time, protection settings, and communication parameters.
Power-on Commissioning: Prioritize no-load commissioning to confirm normal motor rotation and speed response; after completion, conduct load testing to verify protection functions.
System Integration: Connect to PLC/DCS via Ethernet or RS485 to achieve remote start/stop, speed setting, reading operating parameters, and receiving fault alarms.
Spare Parts Replacement: Replace the entire unit with the same model, import the original parameters, perform motor identification, and complete functional testing before putting it into production.
Note: The frequency converter is a power electrical device; wiring and maintenance must be performed with the power off, in accordance with electrical safety regulations.
VI. Design and Structure
The unit is wall-mounted with an IP20 protection rating and is intended for use within the control cabinet only.
Independent cooling duct, air-cooled operation, with a removable and replaceable cooling fan for easy maintenance.
Separate layout for strong and weak current circuits, separating the main power circuit from the control circuit to reduce electromagnetic interference.
Plug-in control panel, supports parameter copying and backup, and supports external installation on the cabinet door.
Separate terminal layout: Power main circuit terminals, control I/O terminals, and network ports are clearly labeled for easy wiring and maintenance.
Modular architecture with independent power units, control boards, and communication options facilitates spare parts replacement and maintenance.
VII. System Features
Simultaneously supports asynchronous motors and permanent magnet synchronous motors, offering strong equipment versatility and adaptability to various field motors.
Supports both local panel control and remote control modes, allowing for independent standalone operation or integration into a plant-wide automation network.
Utilizes Modbus-RTU and Modbus-TCP universal industrial protocols, enabling seamless integration with mainstream PLC, DCS, and SCADA systems.
A complete fault logging system allows for rapid identification of overcurrent, overload, and overheating issues via fault codes, minimizing downtime for troubleshooting.
Multiple parameter sets are stored, eliminating the need for re-entry of parameters during process switching.
Existing LV7000-3 projects can be directly replaced with compatible installation dimensions and interface definitions, reducing on-site modification workload.
Supports 24/7 uninterrupted industrial continuous operation, adapting to continuous factory production conditions.
VIII. Warranty
Brand new, original products adhere to original manufacturer standards and come with a 12-month warranty from the date of customer receipt. The warranty covers only manufacturing defects of the product itself.
Man-made damage, incorrect wiring, overvoltage surges, lightning strikes, and overload use are not covered by the warranty.
If a product quality issue is confirmed within the warranty period, repair or replacement will be provided.
IX. After-Sales Service
Wiring instructions, parameter debugging guidance, and basic technical data support are available.
Visual and basic power-on tests are performed before shipment to reduce the risk of delivery failure.
Report any damaged or incorrect shipments within 48 hours of receipt, providing photographic evidence, and we will handle it promptly.
On-site service is not provided. Online technical support is available to answer questions and guide customers through installation and debugging.
Fast shipping of in-stock items is supported, as well as bulk orders; estimated delivery time can be provided.
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