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ATA QB-7 Series Soft Starter
Diversified start and stop modes
Multiple user interfaces
Perfect protection function
Powerful memory function
The ATA QB-7 series motor soft starter is a new type of device that integrates power electronics technology and the latest motor control theories. It can be widely used in loads such as fans, water pumps, compressors, and ball mills, making it an ideal replacement for traditional starting devices like autotransformer reduced voltage starters, star-delta starters, and magnetic control reduced voltage starters.
Classification：
Low Voltage Soft Starter
Key words：
Product Consulting
Product Details
Specifications
Application areas
◆ Diversified Start-Stop Modes
The ATA QB-7 series products have four starting modes: voltage ramp start, current ramp start, current-limited start, and heavy load (inrush) start.
◆ Superior Structural Design
Dual CPU structure with mutually redundant reliability design, unique compact internal structure design, facilitating user integration into existing systems. The built-in bypass type lowers the cost of external accessories and reduces the equipment's footprint.
◆ Rich User Interfaces
Standard 485 communication, optional PROFIBUS communication, 1 fault output (passive), 2 programmable relay outputs (passive), 2 programmable logic inputs (active), 1 programmable logic output (active), users can configure according to their needs.
◆ Comprehensive Protection Functions
Protection functions include overcurrent, motor overload, three-phase current imbalance, over/under voltage, phase loss, overheating, underload, PTC, and thyristor short circuit.
◆ Strong Expandability
Expandable functions: Internet real-time monitoring module or leakage detection module can be selected for expansion based on needs. (Both are optional accessories but cannot be used simultaneously; only one module can be selected for expansion).
◆ Complete Display Functions
The LCD screen display meets various working conditions, supports language switching between Chinese and English, and supports expandable display screens, facilitating the use of complete cabinets.
◆ Powerful Memory Function
Dynamic fault memory of over 80 entries, allowing users to easily find the cause of faults at any time, regularly updated, saving storage space.
◆ Rich System Communication Functions
Built-in communication port, this function allows direct communication with the upper PC to achieve remote control and remote signaling functions. (Standard RS-485 interface, optional PROFIBUS interface).
◆ Diversified Wiring Methods
Applicable to both internal and external wiring methods for motors.
Standard Type
| ATA QB-7 Series Standard Soft Starter | System Voltage | Installation Dimensions | External Dimensions | Mounting Holes | ||||
| Appearance | Power (kw) | (V) | H1 (mm) | W1 (mm) | H (mm) | W (mm) | D (mm) | K (mm) |
| A | 8-55 | 380 | 381 | 200 | 453 | 242 | 190 | 10 |
| B | 75-110 | 380 | 399.5 | 230 | 499 | 270 | 208.5 | 10 |
| C | 132-200 | 380 | 429.5 | 260 | 531 | 300 | 208.5 | 10 |
| D | 250-320 | 380 | 459.5 | 270 | 559 | 315 | 208.5 | 10 |
| E | 400 | 380 | 450 | 446 | 631 | 470 | 288 | 10 |
| F | 500 | 380 | 537 | 644 | 734 | 668 | 355.5 | 11 |
| G | 600-800 | 380 | 483 | 893.5 | 1045 | 915.5 | 500 | 11 |
| B | 132-200 | 690 | 399.5 | 230 | 499 | 270 | 208.5 | 10 |
| C | 250-400 | 690 | 429.5 | 260 | 531 | 300 | 208.5 | 10 |
| D | 500-600 | 690 | 459.5 | 270 | 559 | 315 | 208.5 | 10 |
Built-in Bypass Type
| ATA QB-7 Series Built-in Bypass Soft Starter | System Voltage | Installation Dimensions | External Dimensions | Mounting Holes | ||||
| Appearance | Power (kw) | (V) | H1 (mm) | W1 (mm) | H (mm) | W (mm) | D (mm) | K (mm) |
| A | 8-55 | 380 | 381 | 200 | 442 | 242 | 190 | 9 |
| B | 75-110 | 380 | 399.5 | 230 | 496 | 270 | 246.5 | 9 |
| C | 132-200 | 380 | 430.5 | 260 | 543 | 300 | 270 | 9 |
| D | 250-320 | 380 | 459.5 | 270 | 582 | 315 | 267 | 9 |
| B | 132-200 | 690 | 399.5 | 230 | 496 | 270 | 246.5 | 9 |
| C | 250-400 | 690 | 430.5 | 260 | 543 | 300 | 270 | 9 |
| D | 500-600 | 690 | 459.5 | 270 | 582 | 315 | 267 | 9 |
| Item | Technical Specifications | |
| Main Circuit | Power Device | Thyristor Module/Standard Thyristor |
| Main Circuit Power Supply | Three-phase 380V +10%-15%, 50/60Hz | |
| Main Circuit Power Consumption | <2W per phase per ampere | |
| Power Device Voltage | ≥1400V | |
| dv/dt Protection | RC Filter Circuit, Varistor | |
| Control Circuit | Control Circuit Voltage | AC 220V (+10%, -15%), 50/60Hz |
| Control Circuit Power Consumption | 5W | |
| Start Command | Passive Contacts, Keyboard, Computer Commands | |
| Starting Parameters | Starting Method | Current Ramp, Current Limiting Start, Voltage Ramp |
| Starting Voltage | 30%~90% (System Voltage) | |
| Starting Time | 5~120s | |
| Jump Time | 0~3s | |
| Stop | Free Stop | |
| Soft Stop | 0~30s | |
| Fault Protection | Power Supply Fault Protection | Phase Loss, Undervoltage, Overvoltage |
| Equipment Fault Protection | Overheating, Motor Overload, Motor Phase Loss, Start Timeout, PTC Protection, Underload, Three-phase Imbalance, Thyristor Short Circuit, Overcurrent, Ground Leakage Protection, etc. | |
| Online Monitoring | Display | Starting, Running Status and Starting, Running Current and Voltage, Active Power (optional) and Power Factor (optional) |
| Auxiliary Output | Relay Output 1 | Normally Open Relay Contact, AC250V/2A |
| Relay Output 2 | Normally Open Relay Contact, AC250V/2A | |
| Fault Relay Output | Relay Contact, AC250V/2A | |
| Logic Output 1 | Open Collector Output (+12V, +24V), 50mA | |
| Logic Output 2 | Open Collector Output (+12V, +24V), 50mA | |
| Analog Output | 4~20mA or 0~20mA Standard Signal | |
| Digital Communication | Communication Interface | Standard 485, PROFIBUS Optional |
| Environmental Conditions | Operating Temperature | -5~+40℃ |
| Storage Temperature | -25~+55℃ | |
| Relative Humidity | 20~90%, Non-condensing | |
| Altitude | <2000m, Rated Value Unchanged | |
| >2000m, Rated Value -5%/100m | ||
| Product Technical Standards | GB 14048.6-2016 | |
The ATA QB-7 series soft starter for AC motors is widely used in fields such as power, chemical industry, petrochemical, mining, airports and ports, construction, and papermaking, to control motors, reduce grid impact, extend equipment life, and lower maintenance costs.
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Product recommend
Diversified start and stop modes
Multiple user interfaces
Perfect protection function
Powerful memory function
The ATA QB-7 series motor soft starter is a new type of device that integrates power electronics technology and the latest motor control theories. It can be widely used in loads such as fans, water pumps, compressors, and ball mills, making it an ideal replacement for traditional starting devices like autotransformer reduced voltage starters, star-delta starters, and magnetic control reduced voltage starters.
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