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Integrated Bypass Soft Starter丨BK-ZHR10 Series (18.5KW-37KW)
THÔNG SỐ SẢN PHẨM
- Built-in Bypass for Energy Efficiency
- Dual Start Modes
- Comprehensive Protection System
- Intelligent Communication
- Pump-Specific Optimization
- Flexible Wall-Mounted Installation
Sự miêu tả
Tổng quan về sản phẩm
The ZHR10 Series Integrated Bypass Soft Starter (Built-in Bypass Intelligent Motor Soft Starter) is an advanced digital soft start solution, suitable for 0.37~400KW three-phase AC asynchronous motors. As a core Bypass Soft Starter, its standout feature is automatic switching to bypass operation after start-up completion, reducing energy consumption and improving equipment stability.
This intelligent motor soft starter supports two start modes (voltage ramp start, current-limiting start) and two stop modes (free stop, timed soft stop). As a professional Integrated Bypass soft starter, it is equipped with a complete protection system, including multiple safeguards such as input phase loss, output phase loss, overload, overcurrent, and underload. It supports RS485 communication (Modbus-RTU protocol) and Chinese/English display, adapting to 220V/380V voltage levels and star or internal delta connection methods to meet diverse industrial scenario requirements for soft starter applications.
Its core design focuses on high reliability, low energy consumption, and easy operation. Through optimized circuit layout and built-in bypass structure, this Integrated Bypass Soft Starter ensures long-term stable operation in harsh industrial environments, suitable for various small to medium-sized industrial equipment such as pumps, fans, and conveyors that require a reliable motor soft starter.

Ứng dụng
The ZHR10 Series Integrated Bypass Soft Starter is widely used in small-to-medium industrial scenarios, commercial facilities, and general machinery fields, providing smooth soft start solutions for low to medium-power equipment as a professional soft starter:
General Machinery & Light Industry Equipment
- Small machine tools, compressor drives powered by motor soft starter
- Packaging machinery, printing equipment matched with in-line soft starter
- Small conveyors, production lines equipped with Bypass Soft Starter
- Light industry processing auxiliary machinery supported by soft starter
Pumps & Water Treatment Equipment
- Civil/industrial sewage pumps, water supply pumps with dedicated motor soft starter
- Small booster pumps, circulation pumps powered by Integrated Bypass Soft Starter
- Water treatment metering pumps, chemical dosing pumps matched with soft starter
- Small irrigation pumps, drainage pumps supported by in-line soft starter
Fans & HVAC Systems
- Ventilation fans, exhaust fans equipped with motor soft starter
- Small central air conditioning fans powered by Bypass Soft Starter
- Industrial smoke exhaust fans, supply fans matched with Integrated Bypass Soft Starter
- HVAC system circulation fans supported by soft starter
Construction & Building Materials Field
- Small mixers, mortar mixers with motor soft starter
- Construction elevator auxiliary drives powered by in-line soft starter
- Small crushers, grinders matched with Bypass Soft Starter
- Building materials conveying equipment supported by soft starter
Agricultural & Livestock Equipment
- Small agricultural irrigation pumps equipped with motor soft starter
- Feed grinders, mixers powered by Integrated Bypass Soft Starter
- Livestock ventilation fans matched with soft starter
- Small grain processing machinery supported by in-line soft starter
Tính năng sản phẩm
Built-in Bypass Design for Energy Efficiency (Integrated Bypass Soft Starter)
As a professional Integrated Bypass Soft Starter, it automatically switches to bypass operation after start-up, reducing thyristor loss, lowering energy consumption, and extending the service life of this motor soft starter.
Dual Start Modes for Diverse Loads (Motor Soft Starter)
This soft starter supports voltage ramp start (smooth start to reduce impact) and current-limiting start (controls start-up current to protect the power grid), which can be flexibly selected according to load characteristics of equipment using in-line soft starter.
Comprehensive Protection System for Safety & Reliability (Bypass Soft Starter)
This Bypass Soft Starter integrates multiple protections including input phase loss, output phase loss, running overload, start-up overcurrent, running overcurrent, underload, thyristor breakdown, and three-phase imbalance to fully protect motors and equipment using motor soft starter.
Intelligent Communication & Remote Control (Soft Starter)
Equipped with an RS485 communication interface and supporting Modbus-RTU protocol, this motor soft starter enables remote control, centralized management, and data monitoring, reducing on-site operation difficulty for Integrated Bypass Soft Starter users.
Multi-Language Display for Easy Operation (Motor Soft Starter)
This soft starter supports Chinese/English bilingual operation interfaces, with clear LED status indicators and a detachable operation panel. Parameter setting is intuitive and fault troubleshooting is convenient for in-line soft starter applications.
Pump-Specific Functions for Scenario Optimization (Soft Starter)
This motor soft starter supports 4 pump-matching functions (float switch, electric contact pressure gauge, liquid level relay, etc.), optimizing start-stop logic for water supply/drainage scenarios and adapting to various pump equipment using Bypass Soft Starter.
Flexible Installation for Diverse Spaces (Integrated Bypass Soft Starter)
This Integrated Bypass Soft Starter features a wall-mounted installation design with a compact size, adapting to different on-site installation conditions. The power range covers 0.37~115KW, meeting the driving needs of small to medium-sized equipment requiring a soft starter.
Thông số kỹ thuật
| Basic Information | Model Series | BK-ZHR10 Series |
| Kiểu | Built-in Bypass Intelligent Soft Starter (Solid-State, 6 SCR Full-Wave Control) | |
| Applicable Motor | Squirrel-cage Three-phase Induction Motor | |
| Phạm vi công suất | 18.5kW –37kW | |
| Dòng điện định mức | Corresponds to motor rated current (user-settable via F01) | |
| Phương thức kết nối | Star (Y) or Internal Delta (Δ) connection supported | |
| Electrical Characteristics | Input Voltage | 220V / 380V AC ±15% (Three-phase) |
| Input Frequency | 50/60 Hz ±5% | |
| Control Power | Built-in (No external 24V required; A1/A2 for internal power) | |
| Output Voltage Control | Phase-angle control via thyristors (30%–80% start voltage adjustable) | |
| Control & Operation | Start Modes | • Voltage Ramp (Default) • Current Limiting |
| Stop Modes | • Free Stop • Timed Soft Stop (0–60 s adjustable) | |
| Start Time | 1 – 120 s | |
| Start Current Limit | 50% – 600% of motor rated current (Ie) | |
| Initial Voltage | 30% – 80% Ue (Minimum 37% in closed-loop mode) | |
| Protection Functions | Built-in Protections | • Input Phase Loss • Output Phase Loss • Overload (Class 1–30) • Start Overcurrent • Run Overcurrent • Underload • Thyristor Breakdown • External Fault Input • Startup Timeout |
| Protection Response | Configurable: Trip or Ignore (via F27–F34) | |
| Overload Curve | IEC Standard Inverse-time (Adjustable Class 1–30 via F14) | |
| Control & I/O | Digital Inputs | 3 Programmable (IN1, IN2, IN3) + 12/24V COM Functions: Start, Stop, External Fault |
| Relay Outputs | Relay 1: TA/TB/TC (Common/NC/NO) Relay 2: TA2/TC2 (NO only, for 18.5–115kW models) | |
| Relay Functions | Selectable: Power-on, Soft-start, Bypass, Soft-stop, Running, Standby, Fault | |
| Analog Output | 1 Channel: 4–20mA (Scalable via F44–F46, optional) | |
| Giao tiếp | RS485 (Modbus RTU Protocol) • Baud Rate: 2400/4800/9600/19200 bps (default 9600) • Address: 1–127 | |
| User Interface | Trưng bày | LCD with Backlight (Chinese / English) |
| Keypad | Local Start/Stop, Parameter Setting, Fault Reset | |
| LED Indicators | RUN (On during start/run/soft-stop) FAULT (Flashing on fault) | |
| Mechanical & Environmental | Phương pháp làm mát | Natural Convection + Heatsink |
| Protection Degree | IP20 (For installation in electrical cabinet only) | |
| Mounting | Wall-mounted (Screw mounting per size) | |
| Nhiệt độ hoạt động | -10°C to +40°C | |
| Độ ẩm | ≤95% RH, non-condensing | |
| Compliance & Safety | Tiêu chuẩn | Designed per IEC 60947-4-2 principles |
| Safety Notes | • STOP function does NOT isolate output voltage. • External safety disconnect required before maintenance. • Not suitable for emergency stop circuits. | |
| Additional Features | Pump Control Modes | 5 Modes: 0: None 1: Float Switch 2: Pressure Switch 3: Supply Level Relay 4: Drain Level Relay |
| Auto Restart | Disabled by default (F43 = 0); configurable up to 3600s | |
| Password Protection | User parameter lock (F39: 00000–99999) | |
| Monitoring Parameters | Real-time display of: • Motor current (per phase) • Running time • Start count • Fault history |
Model Comparison Chart
| ZHR10 Series (Built-in Bypass Soft Starter) | Power (KW) | Overall Dimensions (mm) W1H1D1 | Mounting Dimensions (mm) |
| ZHR10-18.5KW~37KW | 18.5~37 | 300*320*250 | M6 |
Note: Dimension parameters are subject to the actual product and can be adjusted according to customization requirements.
FAQ For Integrated Bypass Soft Starter
- What are the core advantages of the integrated bypass design in the BK-ZHR10 series?The integrated bypass automatically switches to bypass operation after startup, reducing thyristor energy loss, lowering equipment operating temperature, and extending service life. It also ensures stable operation with lower energy consumption for long-term continuous work.
- How to select the appropriate model of BK-ZHR10 soft starter for my motor?Match the model based on the motor’s rated power (0.37KW~15KW) and rated current. Ensure the soft starter’s power range covers the motor’s power, and confirm the voltage level (220V/380V) matches the on-site power supply.
- Which start mode should I choose for different loads (e.g., pumps, fans, conveyors)?
- Voltage ramp start: Suitable for general loads like fans and small conveyors (smooth start to reduce impact).
- Current-limiting start: Ideal for high-impact loads like pumps (controls startup current to protect the power grid).
- What should I do if the soft starter triggers a protection alarm (e.g., overload, phase loss)?First, check the fault code on the LCD display. For overload, reduce the load or extend acceleration time; for phase loss, inspect the input/output wiring for loose connections or phase absence. Reset after troubleshooting.
- Does the BK-ZHR10 support remote control? How to configure it?Yes, it supports remote control via RS485 communication (Modbus-RTU protocol). Connect the 485+ and 485- terminals to the PLC/upper computer, set the baud rate (1200~115200BPS) and data format consistently, and realize remote operation and monitoring.
- Can the BK-ZHR10 be used with frequency conversion motors?It is mainly designed for squirrel-cage three-phase induction motors. For frequency conversion motors, confirm the motor’s rated current and voltage match the soft starter’s specifications, and disable the motor’s frequency conversion function during use.
- What is the recommended maintenance cycle for the BK-ZHR10?For harsh industrial environments (dusty, humid), inspect wiring terminals, heat sinks, and fans every 3~6 months; for general environments, annual inspection is sufficient. Clean dust regularly to ensure heat dissipation efficiency.
- How to switch between Chinese and English interfaces on the operation panel?Press and hold the “Parameter” key for 3 seconds to enter the system setting menu, find the “Language Selection” (F50) option, and switch between Chinese (default) and English as needed. Save the setting and exit the menu to take effect.
Câu hỏi thường gặp
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