Product Overview
With Industrial IoT and 5G support, Renle's latest intelligent soft starters incorporate fully digital medium voltage power modules using optical fiber multiplexing technology. They come standard with industrial Ethernet and multiple communication interfaces. These features enable remote data analysis, software upgrades, debugging, and virtual oscilloscope functions-all via industrial Ethernet, leveraging Renle's years of technical expertise.
medium voltage solid state starter Key Features
Fiber multiplexing technology
Full digitalization of high-voltage power modules
Multiple communication interfaces
Remote data analysis
Industrial Ethernet communication
Remote software upgrades
Technical features
- Utilizes series-connected thyristor valve groups and dual power supply triggering technology.
- Employs fiber optic multiplexing for both drive control and data acquisition.
- Features an HMI for real-time monitoring, display, and adjustment of system parameters and status.
- Integrates OBD and software-based dual overvoltage protection.
- Performs limit data statistics after each startup to evaluate the system's condition.
- Incorporates a phase-locked loop with three-phase conduction compensation control.
- Comprehensive protections include: under-voltage, phase loss, overcurrent, overheating, thyristor overvoltage, trigger failure, abnormal voltage sharing, abnormal RC current, device failure, and communication/power issues-startup is blocked upon any abnormality.
- Supports remote software updates, debugging, waveform monitoring, and fault analysis via the Internet.
- Connects to cloud servers via industrial Ethernet and 5G, enabling big data analytics, AI algorithms, cloud-based motor diagnostics, fault prediction, and optimized control.
Model Description
Soft Start Function
Strong load adaptability, with two starting control modes:
- Constant Current Mode: The motor's nominal current during startup is limited to a range of 100–500%.
- Voltage Ramp Mode: The control angle gradually increases the output voltage to the rated voltage.
Free Stop or Soft Stop is optional: This feature is suitable for various stopping occasions, meeting specific needs, such as eliminating the water hammer effect in water pumps.
Advantages
5G Industrial Ethernet Communication
Leveraging industrial Ethernet and cloud platforms, this technology enables comprehensive remote support for field devices-from data reading and waveform display to diagnostics and software upgrades.
Multi-Protocol Communication Support
The medium voltage solid state starter supports Modbus RTU, Modbus TCP, and PROFIBUS DP, with reserved interfaces for parameter access and data monitoring. It also facilitates remote waveform analysis and data diagnostics via software, along with FTP/TFTP-based downloads and updates.
Primary Control Plan
- Current transformer: Used for current measurement and control.
- Voltage sensor: Used for voltage measurement, phase sequence detection, synchronous sampling, and voltage control.
- Thyristor series valve group: Includes thyristors, drives, protection, detection, voltage sharing, and heat dissipation, among others.
- Bypass contactor: Used to switch the main circuit to power frequency after a successful soft start.
- Zero-sequence transformer: Optional.
- Squirrel cage motor: Provided by the customer.
Note: If a reactive power compensation device is required, it should only be connected to the power supply end of the soft starter and cannot be installed at the output end.
General Application Schematic Diagram
- Incoming circuit breaker: Provided by the user.
- Voltage sensor: Used for voltage detection, phase sequence detection, and synchronous sampling.
- Current sensor: Used for current detection.
- Thyristor valve group: Strictly screened anti-parallel thyristor strings.
- Controller: The core of soft-start control.
- Bypass contactor: Used to switch the motor to power frequency after starting.
- Zero-sequence transformer: Optional.
- Squirrel-cage motor: Provided by the user.
Technical Parameters
|
Data Name |
Working Range |
|
Frequency |
50Hz/60Hz±2Hz(selected according to user's grid) |
|
Overload capacity |
400% control nominal value 60s |
|
500% control nominal value 30s |
|
|
Applicable motor |
Three-phase squirrel-cage asynchronous and synchronous motor |
|
Application environment |
|
|
Temperature |
Cabinet temperature 0°C~40°C, (Heater is optional for -20°C~0°C) |
|
Humidity |
5%~95% relative humidity |
|
Altitude |
Below 2000m. Derating is necessary for altitude above 2000m. |
|
Place |
Indoors, no explosive or corrosive gas, with low dust |
|
Cooling |
Natural cooling |
|
Structural features |
|
|
Protection level |
IP4X |
|
Operation power supply |
2kVA AC220V supplied by the user (can be specified). |
|
Main circuit |
The number of thyristors is determined by the model. |
|
Communication protocol |
Integrated Modbus RTU, Modbus TCP, CAN and PROFIBUS DP communication protocols, equipped with interface. |
|
Communication interface |
RJ45 |
|
Operation interface |
7-inch touch screen (HMI) which monitors system status in real-time. Used for setting and modifying parameters. |
|
Event record |
It can continuously record events and historical curves with time and date stamps within 10 days. |
|
Performance monitoring |
Current, voltage, power factor, module temperature, RC average and peak voltage, RC current, etc. |
|
Input and output options |
10 channels of 24VDC programmable inputs, 2 channels of 16A and 4 channels of 5A programmable outputs, 1 analog programmable output (4~20mA). |
|
User management |
Multi-level user password protection (can be specified). |
|
Interface language |
Chinese, English, Russian (can be specified) |
|
Thyristor |
Thyristor valve group in series |
|
Drive and data |
Dual power supply triggering, optical fiber communication multiplexing technology; |
|
Adopting synchronous phase-locked loop, three-phase conduction compensation algorithm; |
|
|
Equipped with OBD and software double overvoltage function; |
|
|
After startup is completed, the valve group limit data are counted for evaluating the system status. |
|
|
Monitoring |
HMI window, used for real-time monitoring of system status, collection of valve group data and setting and modification of control parameters. |
|
Protection |
Under voltage, overvoltage, phase loss, overheating, abnormal voltage sharing, abnormal RC current, thyristor failure, optical fiber communication interruption, abnormal triggering power supply etc. |
|
Cloud service |
Remote software update, commissioning, data waveform monitoring and fault analysis is realized through InterNet; |
|
After connecting to the cloud server through industrial Ethernet + 5G, the soft starter provides data for big data analysis and related AI algorithms; |
|
|
makes full use of the computing power of the cloud platform to realize online analysis and diagnosis of motor operating status, and realizes fault pre-warning and optimized control. |
|
|
Cabinet color |
Selected by the user. |
|
Start data |
|
|
Starting current |
Adjustable within 4 times of the rated current of the motor. |
|
Starting time |
Adjustable within 10~60 seconds. |
|
Number of starts |
6 times per hour at an ambient temperature of 25°C. |
|
Starting interval |
No less than 5 minutes between two starts. |
|
Protection parameters |
|
|
Transient overcurrent |
Protection range 200%~800% |
|
Inverse time overcurrent |
The protection time is 1 minute for 1.5 times, used for protecting the motor during bypass operation. |
|
Incoming line under voltage |
Range: 0%~100% |
|
Grounding |
Ground protection is identified by zero-sequence current. |
|
Output phase loss |
Set the threshold 1.0%~50% according to the parameters by comparison of the three-phase output current. |
|
Thyristor breakdown |
Set action threshold through parameters by monitoring voltage of each level of thyristors. |
|
RC current |
Monitor RC current of each level of thyristors and identity RC working status. Current deviation can be set. |
|
Trigger failure |
During startup, the number of triggering failure exceeds the set parameter value within 2 seconds of detection window, so protection acts. |
|
Start timeout |
The start time exceeds the set value. |
|
Triggering power |
If the power of the triggering board is lower or higher than the hardware protection value, protection of triggering board power acts. |
|
Temperature |
SCR temperature exceeds the set parameters. |
|
Thyristor overvoltage |
During the starting process, each level of SCR is equipped with OBD protection. During one starting process, the number of overvoltage automatic triggering reaches the set parameter, the protection is performed. |
Applications
- We are committed to supporting industrial development with high-quality products.
- The RNMV-EI medium voltage solid state starter is widely used across industries such as electric power, metallurgy, petroleum, petrochemical, mining, building materials, chemicals, and municipal sectors. It provides compact, stable, and reliable soft-starting solutions for medium-voltage motor control.
- Equipped with comprehensive motor and system protection, Renle's soft starters deliver reliable performance even under harsh conditions. With rich user interfaces and a modular design, they meet the starting demands of large and medium-sized machinery in modern industrial applications.
- We are here to provide the right solution for your needs!
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Electric power industry |
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Steel industry |
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Chemical industry |
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Petroleum Industry |
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Coal industry |
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Water conservancy industry |
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Paper industry |
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Machinery manufacturing |
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