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ZONCN Z2400‑75G is a heavy‑duty constant‑torque open‑loop vector VFD (Variable‑Frequency Drive). Rated 75kW G‑grade for heavy‑load working conditions, 3‑phase 380‑415V AC input. It is specially optimized for screw air compressor transformation and supporting drive, also suitable for various high‑torque 3‑phase asynchronous motor speed‑regulation in heavy‑duty industrial scenarios.
Why Choose the Z2400-75P for Your Air Compressor?
Purpose-built for air compressor systems — Compatible with ZONCN's dedicated air compressor control ecosystem, including HMI controllers and SP600 series integrated solutions.
Heavy-duty performance — P-type overload capacity of 120% rated current for 60 seconds and 150% for 3 seconds, handling the load fluctuations typical of screw compressor startup and operation.
Energy-saving design — Reduces energy consumption by replacing traditional valve or damper regulation with precise variable frequency speed control.
Full certification — CE and KC certified, EMC tested, suitable for global export markets.
| Item | Specification |
| Model | Z2400-55G |
| Rated Power | 55 kW (Constant Torque, G Type) |
| Input Voltage | 3-Phase AC 380V ±15%, 50/60 Hz |
| Output Voltage | 0–400V AC (3-Phase) |
| Control Mode | Sensorless Flux Vector Control (SFVC) / V/F Control |
| Max Output Frequency | 0–320 Hz (Vector) / 0–3200 Hz (V/F) |
| Starting Torque | 150% @ 0.5 Hz (SFVC, G Type) |
| Speed Range | 0: 100 |
| Speed Stability Accuracy | ±0.5% |
| Overload Capacity | 150% for 60s，120% continuous |
| Carrier Frequency | 1–16 kHz, auto-adaptive |
| Torque Boost | Auto or manual: 0.1%–30.0% |
| V/F Curve | Linear / Multi-point / N-power (1.2, 1.4, 1.6, 1.8, 2.0) |
| Acceleration/Deceleration | Linear or S-curve, 0.0–6500.0s, 4 sets |
| DC Braking | Frequency: 0.00 Hz–max; Time: 0.0–100.0s |
| JOG Control | 0.00–50.00 Hz |
| Built-in PID | Yes |
| Communication | RS485 / Modbus RTU (standard); EtherCAT (optional) |
| Protection Class | IP20 |
| Ambient Temperature | -10°C to 40°C |
75kW P-Type Output, 150A Rated Current
75kW rated power, 150A output / 140A input. P-type variable torque design for air compressor fan and pump loads.
Sensorless Flux Vector Control (SFVC)
Delivers 100% rated torque at 0.5Hz and ±0.5% speed stability for reliable compressor startup.
Strong Overload Capacity
120% rated current for 60s, 150% for 3s — handles screw compressor load surges and impacts.
Built-in PID & 16-Speed Simple PLC
Supports closed-loop pressure control and up to 16-speed operation for multi-stage or load-adaptive compressor systems.
Comprehensive Protection & Intelligent Control
AVR, overvoltage/overcurrent stall prevention, rapid current limit, and torque limit reduce tripping and protect both VFD and motor.
Standard RS485 with MODBUS-RTU
Easily integrates with PLCs, HMI controllers, and automation systems. Optional EtherCAT for higher real-time requirements.
Compact Design with Integrated EMC Filter
Built-in EMC filter; built-in braking unit for models 37kW and below, saving cabinet space and cost.
Air Compression: Screw air compressor main drive, fan speed control, air dryer system
HVAC: Central air-conditioning fans, cooling tower fans, circulating water pump energy-saving upgrades
Water Treatment: Water supply pumps, sewage pumps, booster pumps with constant-pressure control
Textile & Dyeing: Textile machinery, winding equipment, setting machine speed control
CNC Machine Tools: Spindle drive, feed system stepless speed regulation
Logistics & Conveying: Conveyors, sorting lines, smooth start/stop of hoists
Plastic Machinery: Injection molding machines, extruders, film blowing machine motor control
Mining & Metallurgy: Mine ventilation fans, hoists, centrifuge control
Packaging & Printing: Packaging machines, printing machines, laminating machine tension control
Dual-Torque Universal Design: Z2400 series features dual G/P torque modes for both heavy constant-torque machinery and light variable-torque fan/pump loads. One VFD fits multiple scenarios, simplifying selection and lowering inventory costs.
High-Stability Vector Control: Adopts sensorless flux vector & V/F dual control, outputting 150% high torque at 0.5Hz with ±0.5% precise speed regulation. It eliminates motor jitter and weak startup power, delivering stable full-speed operation.
Strong Environmental & Grid Adaptability: Supports ±15% wide voltage fluctuation for unstable industrial power grids. Adaptive carrier frequency and anti-interference design ensure low noise, low vibration and long-term reliable operation.
Energy-Saving & Expandable Functions: Built-in energy-saving algorithm and PID closed-loop control reduce power consumption by 20%-40%. Standard Modbus RS485 and optional EtherCAT enable remote monitoring and intelligent system integration.
Full Protection & Certified Reliability: Equipped with comprehensive electrical protection and 150%/60s overload capacity to resist sudden load impacts. CE-certified with IP20 protection and 18-month warranty for safe industrial operation.
High Cost-Performance & Global Support: Adopts industrial-grade hardware with optimized circuitry to balance premium performance and affordable price. Backed by complete global after-sales and technical support for industrial speed regulation and energy-saving projects.
Q1: What does “P” stand for in Z2400-75P?
P = light-duty (variable torque), for fans, pumps, air compressor cooling. 75kW, 150A. For heavy-duty constant torque, choose G-type (Z2400-75G/90P).
Q2: What control modes does this VFD support?
V/F and sensorless flux vector control (SFVC). V/F max 3200Hz; vector max 320Hz. Switchable.
Q3: What is the overload capacity?
P-type: 120% rated current for 60s, 150% for 3s.
Q4: Does it support remote communication and automation integration?
Yes. Standard RS485 with MODBUS-RTU, compatible with PLC, HMI, DCS. Optional EtherCAT.
Q5: What protection functions are included?
Overcurrent, overvoltage, undervoltage, overheating, overload. Plus AVR, stall prevention, rapid current limit, torque limit.
Q6: What certifications has the product obtained?
CE, KC, RoHS. EMC tested. Safe for Europe and most global markets.
Q7: What motor types are applicable?
Standard three-phase induction motors and permanent magnet synchronous motors (PMSM, Z2000T series).
Q8: Is a braking unit built in?
Built-in for models ≤37kW. For 75kW, external braking unit may be required — confirm with our technical team.
Q9: What is the warranty and delivery time?
Warranty: 18 months. Delivery: 7–30 days. MOQ: 1 PC. Payment: T/T, PayPal.
Q10: Does it support OEM/ODM customization?
Yes. Custom brand, parameters, and communication protocol available. Contact us for details.
