The CDK Series Pump Automatic Control Cabinet is an electrical control device for automated water supply and drainage systems.
It provides automatic pump start/stop, overload protection, and real-time monitoring to minimize manual operation and unplanned downtime.
Suitable for fixed-installation pump applications in building water supply, wastewater treatment, agricultural irrigation, and industrial circulation systems.
Extended Service Life | Soft-start control mitigates water hammer, while industrial-grade components reduce electrical degradation. Design life ≥10 years (>40% longer than conventional panels).Proven Energy Efficiency | Precision VFD control + intelligent demand-matching dynamically adjusts motor speed to actual flow demand. Delivers 30–60% verified energy savings, significantly lowering OPEX.
Reduced Maintenance & Downtime | Modular circuitry with diagnostic fault codes & audio-visual alarms enables <30-min fault isolation. Seamless Manual/Auto switchover ensures uninterrupted operation.
Compact Design & Rapid Deployment | Optimized enclosure layout & wiring architecture reduces footprint by 15% and cuts installation time by ~25%, streamlining on-site commissioning.
Native Smart Scalability | Integrated 4G/RS485 telemetry, lead-lag pump alternation, and low-flow sleep mode. Modular configuration scales to actual needs, eliminating over-engineering.
Engineered for critical fluid infrastructure
Municipal & Building Services
High-rise domestic boosting | Fire pressure maintenance | Sprinkler control
Wastewater lift stations | Stormwater automation | Network dispatch
Industrial & Energy
Closed-loop cooling | Constant-pressure process water | Boiler feedwater control
Mission-critical duty for power, chemical & pharma plants
Agriculture & Environment
Smart irrigation & drainage scheduling
Greenhouse drip/sprinkler pressure control | Aquaculture recirculation
Rugged Environmental Tolerance
Operational Range: -10°C to +40°C | ≤90% RH (non-cond.) | ≤1,000 m
High-altitude derating available on request
| NO.
| Rated Power
| Cabinet Dimensions (H×L×W) | |||
| One Pump Per Controller | One Controller for Two Pumps | One Controller for Three Pumps | One Controller for Four Pumps | ||
| 1 | 0.75 | 1200×600×400 | 1400×600×400 | 1400×600×400 | 1400×600×400 |
| 2 | 1.1 | 1200×600×400 | 1400×600×400 | 1400×600×400 | 1400×600×400 |
| 3 | 1.5 | 1200×600×400 | 1400×600×400 | 1400×600×400 | 1400×600×400 |
| 4 | 2.2 | 1200×600×400 | 1400×600×400 | 1400×600×400 | 1400×600×400 |
| 5 | 3 | 1200×600×400 | 1400×600×400 | 1400×600×400 | 1400×600×400 |
| 6 | 4 | 1200×600×400 | 1400×600×400 | 1400×600×400 | 1400×600×400 |
| 7 | 5.5 | 1200×600×400 | 1400×600×400 | 1400×600×400 | 1400×600×400 |
| 8 | 7.5 | 1200×600×400 | 1600×600×400 | 1600×600×400 | 1600×600×400 |
| 9 | 11 | 1200×600×400 | 1600×600×400 | 1600×600×400 | 1600×600×400 |
| 10 | 15 | 1400×600×400 | 1600×600×400 | 1600×600×400 | 1600×600×400 |
| 11 | 18.5 | 1400×600×400 | 1600×600×400 | 1600×600×400 | 1600×600×400 |
| 12 | 22 | 1400×600×400 | 1600×600×400 | 1600×800×400 | 1600×800×400 |
| 13 | 30 | 1600×600×450 | 1800×800×500 | 1800×800×450 | 1800×800×450 |
| 14 | 37 | 1600×600×450 | 1800×800×500 | 1800×800×450 | 1800×800×450 |
| 15 | 45 | 1600×600×450 | 1800×800×500 | 1800×800×450 | 1800×800×450 |
| 16 | 55 | 1600×700×450 | 1800×800×500 | 1900×1000×500 | 1900×1000×500 |
| 17 | 75 | 2000×800×600 | 2000×900×600 | 2200×1100×600 | 2200×1100×600 |
| 18 | 90 | 2000×800×600 | 2000×900×600 | 2200×1100×600 | 2200×1100×600 |
| 19 | 110 | 2000×800×600 | 2000×900×600 | 2200×1100×600 | 2200×1100×600 |
| 20 | 132 | 2000×800×600 | 2000×900×600 | 2200×1100×600 | 2200×1100×600 |
| 21 | 160 | 2000×800×600 | 2000×900×600 | 2200×1100×600 | 2200×1100×600 |
The complete CDK series complies with core international standards, including EU CE Marking, North American UL Listing, and ISO 9001:2015. Targeted compliance configurations are available for specialized operating conditions, including fire protection, hazardous locations, and high-altitude deployments. Complete certification dossiers and test reports are available upon request.
Standard Models: Rapid Fulfillment
3 power ranges (0.75–315 kW) | IP54/IP65 | 72h sample validation
Engineered Customization
Control Logic: Lead-lag sequencing | Multi-loop (P/F/L) | Fire-pump priority
Hardware: PLC/HMI/IoT ready | Tier-1 component selection (ABB/Mitsubishi/CHINT)
Mechanical: Custom footprint | Flexible cable routing | Site-optimized mounting
Compliance: CE / UL / IECEx pathways • Feasibility reviewed pre-engineering
Custom Request?
Email our applications team → Technical proposal within 48h.
Mounting & Wiring Essentials
Orientation: Mount cabinet vertically (tilt ≤5°); maintain ≥15 cm clearance below for thermal dissipation.
Cabling: Use copper-stranded conductors; terminate per terminal markings. Grounding resistance ≤4 Ω.
Signal Integrity: Route sensor (pressure/level) signal cables separately from power/control lines to prevent EMI.
Pre-Energization: Manually rotate pump shaft to verify free movement before parameter initialization.
Q1: How does the CDK achieve ±0.01 MPa pressure control accuracy?
Combines 16-bit ADC sampling + digital PID algorithm (≤100 ms cycle) with VFD vector control to dynamically compensate for pipeline pressure fluctuations. Verified steady-state error: ≤±0.01 MPa (requires high-accuracy pressure transmitter).
Q2: How does multi-pump rotation prevent standby pump corrosion?
Built-in runtime balancing algorithm supports automatic lead/lag switchover by time interval or start-stop cycles. Optional periodic micro-run function (e.g., 5-min low-frequency operation weekly) prevents mechanical seal dry-running and impeller fouling.
Q3: What adjustments are needed for high-altitude use (>1,000 m)?
Air dielectric strength decreases ~10% per 1,000 m elevation gain. Recommended:
① Derate electrical components by 10–15%
② Install internal space heater for anti-condensation
③ Reduce VFD carrier frequency
Provide site elevation for custom engineering assessment.
Q4: Which protocols/platforms are supported for remote monitoring?
Standard: Modbus RTU (RS485). Optional: 4G DTU module with MQTT/HTTP compatibility, enabling seamless integration with AWS IoT, Alibaba Cloud IoT, or customer-owned SCADA systems.
Q5: How is “fail-safe operation” ensured in fire protection mode?
Dual-power supply + hardwired manual override design: If automatic control fails, panel-mounted E-Stop/Start buttons enable direct contactor actuation, guaranteeing 100% reliable fire pump operation per GB 50974 / NFPA 20 requirements.
