W1000 Inverter for Water Pump Applications
Advanced inverter solution designed specifically for water pump applications, featuring energy-saving control technology for efficient operation with both induction motors (IM) and synchronous motors (SM). The silent control function automatically reduces voltage during low-speed or light-load operation, delivering low-noise and energy-efficient performance.
Core Features
Energy Efficiency & Dual-Motor Compatibility
- Dedicated Energy-Saving Control Technology for both Induction Motors (IM) and Synchronous Motors (SM)
- Automatic voltage optimization under low-speed or light-load conditions
- 10%-30% improved energy efficiency compared to standard inverters
- Synchronous motor driving eliminates rotor copper loss, lowers bearing temperature, and extends motor lifespan
Multi-Pump Intelligent Control
- Fixed Variable-Speed Pump Mode: 1 variable-speed pump + up to 3 constant-speed pumps (expandable to 11 with optional DO-A3 card)
- Rotation Switch Mode 1: Cycle variable-speed control for up to 5 pumps (requires DO-A3 card)
- Rotation Switch Mode 2: Cycle variable-speed control for up to 3 pumps (expandable to 11 with optional DO-A3 card)
Low-Noise Operation & Environmental Adaptability
- Swing PWM switching technology minimizes electromagnetic interference and operating noise
- Moisture and dust resistance design compliant with RoHS environmental directives
- Suitable for harsh environments including outdoor pump rooms and basements
High-Precision Control & Stable Performance
- High-precision torque limitation (±5% error) under vector control
- High-speed response above 50Hz with PG feedback control
- Adjustable acceleration/deceleration time (0.1-3600s)
- S-curve characteristic switching to prevent water hammer and pipeline vibration
Safety & Long-Life Design
- Compliant with EN954-1 Cat.3 and IEC/EN61508 SIL2 safety standards
- EDM (External Device Monitoring) function for real-time safety circuit monitoring
- 10-year inverter design life with built-in wear part life diagnosis
- KEB (Kinetic Energy Backup) function for rapid motor shutdown during power outages
Easy Maintenance & Expandability
- Detachable terminal block with parameter backup function
- Standard RS-422/485 communication interface
- Support for PROFIBUS-DP, DeviceNet, CC-Link, and other fieldbuses
- Compatible with DriveWorksEZ visual programming and DriveWizard Plus debugging tools
Key Technical Specifications
| Category |
Specifications |
Notes |
| Input Power |
3-Phase 380V-480V ±10%, 50/60Hz |
Compatible with global mainstream industrial power grids |
| Rated Output Power |
0.75kW - 355kW |
Models: CIMR-EB4W0002 (0.75kW) to CIMR-EB4W0675 (355kW) |
| Rated Output Current |
2.1A (0.75kW) - 675A (355kW) |
Refer to factory selection manual for specific values |
| Output Frequency Range |
0.01Hz - 600Hz |
Meets high-speed pump operation requirements |
| Control Mode |
V/F Control, Sensorless Vector Control, Vector Control with PG |
Torque control accuracy ±5% (with PG vector mode) |
| Frequency Accuracy |
Digital: ±0.01%; Analog: ±0.2% |
Ensures stable constant-pressure water supply |
| Braking Function |
Built-in brake transistor, supports over-excitation braking |
Heavy-duty models require optional brake unit |
| Protection Functions |
Overcurrent, Overload, Overvoltage, Undervoltage, Overheating, Phase Loss, Torque Limitation |
Comprehensive protection for pumps and inverters |
| Environmental Adaptability |
Temperature: -10℃~+45℃; Humidity: 20%~90%RH |
Custom high/low temperature versions available |
| Protection Class |
IP20 (standard), optional IP54 |
High-protection version for outdoor installation |
| Certifications |
CE, UL/cUL, RoHS, SIL2 |
Complies with EU/US market access requirements |
Typical Applications
- Municipal water supply systems and sewage treatment plants
- Industrial cooling water circulation and central air conditioning systems
- Secondary water supply for high-rise buildings and community constant-pressure water supply
- Agricultural irrigation and water conservancy project pump stations
- Corrosion-resistant pumps in chemical and pharmaceutical industries
Model Information
Model Naming Convention
| Model Component |
Meaning |
Example |
| CIMR- |
Yaskawa Inverter Universal Prefix |
CIMR- |
| EB4W |
Series Identifier (W1000 Water Pump-Specific, 380-480V 3-Phase) |
EB4W |
| 00XX |
Capacity Code (Corresponding to Rated Output Power) |
0002 (for 0.75kW) |
| Suffix (Optional) |
-HT: High-Temperature Version; -IP54: High-Protection Version |
CIMR-EB4W0018-HT |
Core Model Specifications
| Model |
Rated Power |
Rated Current |
Motor Type |
Overload Capacity |
Protection Class |
Certifications |
| CIMR-EB4W0002 |
0.75kW |
2.1A |
IM/SM |
150% 60s |
IP20/IP54 |
CE, UL/cUL, RoHS, SIL2 |
| CIMR-EB4W0004 |
1.5kW |
4.1A |
IM/SM |
150% 60s |
IP20/IP54 |
CE, UL/cUL, RoHS, SIL2 |
| CIMR-EB4W0005 |
2.2kW |
5.4A |
IM/SM |
150% 60s |
IP20/IP54 |
CE, UL/cUL, RoHS, SIL2 |
| CIMR-EB4W0007 |
3.0kW |
6.9A |
IM/SM |
150% 60s |
IP20/IP54 |
CE, UL/cUL, RoHS, SIL2 |
| CIMR-EB4W0009 |
3.7kW |
8.8A |
IM/SM |
150% 60s |
IP20/IP54 |
CE, UL/cUL, RoHS, SIL2 |
| CIMR-EB4W0011 |
5.5kW |
11.1A |
IM/SM |
150% 60s |
IP20/IP54 |
CE, UL/cUL, RoHS, SIL2 |
| CIMR-EB4W0018 |
7.5kW |
17.0A |
IM/SM |
150% 60s |
IP20/IP54 |
CE, UL/cUL, RoHS, SIL2 |
Additional models available up to 355kW - contact for complete specifications
Selection Notes for Overseas Markets
- Voltage Matching: Compatible with global industrial power grids (380-480V 3-Phase, 50/60Hz)
- Certification Adaptation: CE for European market, UL/cUL for North America
- Load Adaptation: Reserve 20% power margin for heavy-load scenarios
- Accessory Matching: Recommended brake units for high-power models (≥45kW)
Frequently Asked Questions
Q1: Pressure fluctuations during low water demand in European municipal projects?
Adjust Pr.144 (PI Proportional Gain) to 3.0 and Pr.145 (PI Integral Time) to 15.0s. Enable Pr.575 (Sleep/Wake Function) with sleep threshold at 80% of rated pressure. This reduces pressure fluctuation to ±0.1 bar.
Q2: Overheating faults in Southeast Asian sewage treatment plants?
Clean heat sink and fan filter every 2 weeks with compressed air. Install additional axial fan (150m³/h) in electrical cabinet for improved air circulation. Avoid installation near sewage pump to reduce humidity exposure.
Q3: Pressure drop during pump switching in multi-pump systems?
Set Pr.A21 (Multi-Pump Pre-Excitation Time) to 0.5s and Pr.A22 (Pre-Excitation Torque) to 10%. This preloads torque to standby pump before valve opens, reducing switching delay to 0.3 seconds.
Q4: Derating in high-temperature Middle Eastern environments?
Install inverter vertically, add sunshade cover to electrical cabinet, and set Pr.73 (Overload Protection Level) to 120% 60s. For permanent solution, upgrade to -HT high-temperature model (operates up to 55℃).
Q5: Communication issues with Siemens PLC in German chemical plants?
Use optional PROFIBUS-DP/Profinet card (SI-P1). Set Profinet Device Name to match PLC configuration and map pressure data to Process Data Object (PDO). Use shielded CAT5e or higher cable to prevent interference.
Q6: Parameter recovery without damaged terminal block?
Use USB drive with DriveWizard Plus software via front USB port, or use RS-485 cable to copy parameters from another W1000 in same system using Pr.970 (Parameter Copy) function.
Q7: Rust issues in seawater desalination applications?
Upgrade to IP54 high-protection model with corrosion-resistant coating. Temporary solution: apply marine-grade anti-corrosion spray and install dehumidifier in cabinet.
Q8: Overcurrent faults during fire pump startup?
Change control mode to "V/f control" (Pr.79 to 1), increase acceleration time to 5.0s (Pr.71), and enable Pr.250 (Fire Pump Mode). Check for stuck impeller causing high startup load.
