FST-650L-075G/090PT4 & FST-650L-090G/110PT4 High-Performance Vector VFD (75kW-90kW)
Universal VFD with high-performance vector
,75kW-90kW Universal VFD
,Vector VFD with warranty
The Anyhz FST-650L 75kW/90kW is a high-performance vector variable frequency drive engineered specifically for medium-to-large industrial motor control. Featuring advanced flux vector control technology, it delivers 150% rated torque at 0.5Hz without encoder feedback—making it the ideal drive solution for compressors, pumps, fans, extruders, mixers, and heavy machinery that demand reliable starting performance and precise speed regulation under heavy loads.
With a robust industrial design, built-in PID controller, and support for multiple communication protocols, the FST-650L 75kW/90kW series provides the reliability, efficiency, and flexibility required for continuous-duty industrial operations.
- Heavy-Duty Starting Torque: 150% torque at 0.5Hz (SVC), 180% at 1Hz (FVC)—handles full-load starts without motor stall
- Multiple Control Modes: V/F control, Sensorless Vector Control (SVC), and Torque Control for maximum application flexibility
- Built-in Energy Optimization: Automatic Energy Optimization (AEO) reduces power consumption by 20–40% on variable-torque loads
- Robust Overload Protection: 150% for 60 seconds, 180% for 10 seconds—protects against surge loads and mechanical jams
- Integrated Process Control: Built-in PID controller, multi-pump control logic, and sleep/wake functions for pump and fan systems
- Industrial Communication: RS-485 with Modbus RTU standard
| Parameter | FST-650L-075G/090PT4 (75kW) | FST-650L-090G/110PT4 (90kW) |
|---|---|---|
| Rated Power | 75kW | 90kW |
| Input Voltage | 3-Phase 380V ±15% (323V–437V) | |
| Input Frequency | 50/60Hz ±5% | |
| Rated Output Current | 150A | 176A |
| Overload Capacity | 150% for 60s / 180% for 10s | |
| Starting Torque | 150% @ 0.5Hz (SVC) / 180% @ 1Hz (FVC) | |
| Speed Range | 1:100 (SVC) / 1:1000 (FVC) | |
| Speed Accuracy | ±0.5% (SVC) | |
| Output Frequency | 0–500Hz | |
| Frequency Resolution | 0.01Hz (digital) / 0.1% (analog) | |
| Carrier Frequency | 1kHz–15.0kHz (auto-adjust based on temperature) | |
| Acceleration/Deceleration | 0.01s–600s (linear / S-curve) | |
| Braking Unit | There is no built-in braking unit or braking resistor; it must be connected externally when needed. | |
| Cooling Method | Forced air cooling | |
| Protection Class | IP20 (standard) | |
| Operating Temperature | -10°C to +50°C (derate above 40°C) | |
| Installation Dimensions (W×H×D) | 340mm × 580mm × 250mm | |
| Approx. Weight | 28kg | 30kg |
- Digital Inputs: 7 channels, programmable (NPN/PNP compatible)
- Digital Outputs: 4 relay channels + 1 open-collector output
- Analog Inputs: 2 channels (0–10V / 4–20mA, 12-bit resolution)
- Analog Outputs: 1 channels (0–10V / 4–20mA)
- Pulse Input: 0–50kHz encoder signal support (for FVC upgrade)
- Standard Communication: RS-485 with Modbus RTU protocol
- Built-in PLC Logic: User-programmable with free PC configuration software
75kW/90kW drives are the workhorse of industrial compressed air stations. Constant pressure control eliminates energy-wasting unload cycles, while soft-start functionality prevents grid voltage dips. The 180% overload capacity handles compressor stall conditions with ease.
Key Benefits: 25–35% energy savings, reduced mechanical wear, stable air pressure
Recommended Model: FST-650L-075G/090PT4 / FST-650L-090G/110PT4
From municipal water supply to industrial circulation systems, the built-in PID controller maintains constant pressure or flow. The multi-pump control function rotates pump duty cycles to balance wear, while sleep/wake logic reduces energy consumption during low-demand periods.
Key Benefits: Multi-pump cascade control, dry-run protection, soft-fill function, 30–50% energy reduction
Recommended Model: FST-650L-075G/090PT4 / FST-650L-090G/110PT4
Optimize airflow in commercial buildings, industrial facilities, and process cooling. Automatic Energy Optimization (AEO) adjusts voltage based on real-time load, delivering significant savings on centrifugal fans. Fire mode override and smoke evacuation functions ensure safety compliance.
Key Benefits: 25–40% fan energy savings, fire mode override, multi-fan cascade control
Recommended Model: FST-650L-075G/090PT4 / FST-650L-090G/110PT4
Extruder main screw drives demand high starting torque and stable low-speed operation. Sensorless vector control provides ±0.5% speed accuracy, ensuring uniform wall thickness and reducing material waste. Fast torque response handles viscosity changes in real time.
Key Benefits: Stable extrusion quality, reduced startup scrap, torque-controlled pressure regulation
Recommended Model: FST-650L-075G/090PT4 / FST-650L-090G/110PT4
Chemical, food, and pharmaceutical mixing applications require precise speed control across a wide viscosity range. The FST-650L delivers smooth torque transition during batch loading and maintains constant agitation speed regardless of material density changes.
Key Benefits: Viscosity-adaptive control, batch profile programming, reduced mechanical stress
Recommended Model: FST-650L-075G/090PT4 / FST-650L-090G/110PT4
Ball mills, crushers, and conveyor systems in mining operations face severe load fluctuations and occasional jam conditions. The 180% overload for 10 seconds protects against mechanical blockages, while S-curve acceleration reduces gear and belt stress during startup.
Key Benefits: Jam protection, mechanical shock reduction, continuous heavy-duty rating
Recommended Model: FST-650L-075G/090PT4 / FST-650L-090G/110PT4
| Selection Factor | FST-650L-075G/090PT4 (75kW) | FST-650L-090G/110PT4 (90kW) | Recommendation |
|---|---|---|---|
| Motor Power Match | 75kW motors | 90kW motors | Select based on motor nameplate rating |
| Typical Load Types | Fans, pumps, standard compressors | Large compressors, extruders, heavy mixers | Heavy cyclic loads favor 90kW |
| Overload Headroom | Up to 112.5kW (150% for 60s) | Up to 135kW (150% for 60s) | Frequent surge loads → choose 90kW |
| Future Expansion | Matched to 75kW | 15kW upgrade margin built-in | Plan for 20% capacity growth |
| Cost Efficiency | ★★★★★ | ★★★★★ | Both offer best-in-class price-performance |
Selection Tip: For variable-torque loads (fans, pumps), size the drive 1:1 with motor power. For constant-torque or heavy-duty loads (extruders, compressors, crushers), consider upsizing one power level or contact our engineers for a load-duty cycle analysis.
| Performance Metric | Anyhz FST-650L 75kW/90kW | Standard General-Purpose VFD | Impact on Your Application |
|---|---|---|---|
| Starting Torque | 150% at 0.5Hz (SVC) | 100% at 5Hz (V/F) | ✓ Full-load starts without motor stall |
| Speed Accuracy | ±0.5% (SVC) | ±1–2% (V/F) | ✓ Precision for extrusion, mixing, process control |
| Speed Range | 1:100 (SVC) | 1:40 (V/F) | ✓ Wide speed control for specialized machinery |
| Torque Response | <20ms (SVC) | 50–100ms (V/F) | ✓ Instant reaction to load changes |
| Overload Capacity | 180% for 10s, 150% for 60s | 150% for 60s | ✓ Handles peak loads without tripping |
| Built-in Process Control | PID + multi-pump + PLC logic | Basic PID only | ✓ Eliminates external PLC for pump/fan systems |
Bottom Line: While standard VFDs suffice for basic fan and pump applications, the FST-650L 75kW/90kW vector drive is essential for demanding industrial machinery where starting torque, speed precision, and load adaptability are critical to operational efficiency and product quality.
"We installed six FST-650L-090G/110PT4 drives on our 90kW screw compressors. The sensorless vector control eliminated pressure fluctuations entirely, and the built-in PID maintained ±0.2 bar accuracy. Energy consumption dropped 32% compared to our old star-delta starters."
— Brazil, Compressed Air Systems Manager
"Our water treatment plant runs four FST-650L-075G/090PT4 units 24/7 on 75kW centrifugal pumps. The multi-pump rotation function balanced runtime across all pumps, extending bearing life by 40%. The sleep mode alone saves us $8,000 per year in electricity."
— Malaysia, Municipal Water Treatment Director
"We upgraded our plastic extrusion line with FST-650L-090G/110PT4 drives. The ±0.5% speed stability improved our pipe wall thickness consistency by 28%, reducing scrap from 5% to under 2%. No encoder wiring meant faster installation and zero maintenance issues."
— USA, Plastic Products Technical Director
- Indonesia Textile Dyeing Plant (2024): 38 units FST-650L-075G/090PT4 for 75kW circulation pumps, dye bath temperature control
- Brazil Food Processing (2023): 26 units FST-650L-090G/110PT4 for 90kW mixer drives, viscous dough handling
- Thailand Hospital Complex (2023): 32 units FST-650L-075G/090PT4 for HVAC chiller pumps and air handling fans
- Turkey Cement Factory (2023): 24 units FST-650L-090G/110PT4 for 90kW raw mill fan drives, handling 180% overload peaks
- Vietnam Paper Mill (2022): 10 units FST-650L-075G/090PT4 for vacuum pump and stock pump control
- India Steel Rolling (2022): 16 units FST-650L-090G/110PT4 for 90kW cooling bed fan drives, continuous heavy-duty operation
What transformer capacity is required for 75kW and 90kW VFDs?
We recommend a transformer capacity of 1.3–1.5× the drive rated power. For the 75kW drive, use a 100–115kVA transformer; for the 90kW drive, use a 120–135kVA transformer. If multiple VFDs share one transformer, apply a simultaneity factor of 0.7–0.8. Always verify voltage drop during motor startup with your electrical contractor.
Is an output reactor mandatory for 75kW/90kW installations?
Cable length ≤ 50m (unshielded): No reactor required.
Cable length 50–150m: Install an output reactor to protect motor insulation from voltage spikes.
Cable length > 150m: A dv/dt filter or sine-wave filter is mandatory to prevent motor winding damage and bearing currents.
For high-capacity drives (75kW+), we always recommend consulting our application engineers for site-specific cable and filtering recommendations.
Can a 90kW VFD safely drive a 75kW motor?
Yes—this is a common and recommended practice known as "oversizing." Benefits include:
(1) Lower operating temperature, extending drive lifespan;
(2) Greater overload headroom relative to motor power (180% of 75kW = 135kW available);
(3) Built-in margin for future capacity expansion.
Simply configure the drive parameters (motor rated power, current, voltage, frequency) to match the 75kW motor nameplate. The drive will automatically limit output to protect the motor.
Does the 75kW/90kW drive support regenerative braking?
Yes. All FST-650L 75kW/90kW units include a built-in braking unit. You only need to add an external braking resistor sized for your duty cycle.
For applications with continuous regenerative energy (frequent deceleration of high-inertia loads), we offer the FST-650L-REG regenerative rectifier option, which returns braking energy to the grid instead of dissipating it as heat. This can reduce total energy consumption by 20–40% in cyclic-duty applications.
How does FST-650L 75kW/90kW compare to G120 or ACS550?
The FST-650L's sensorless vector control outperforms the G120 (V/F version) and ACS550 (standard V/F) in torque response and speed stability:
• 4× better speed accuracy: ±0.5% vs ±2%
• 50% more starting torque: 150% at 0.5Hz vs 100% at 5Hz
• 2× faster torque response: <20ms vs 50–100ms
The primary advantage is cost—FST-650L is 30–40% more affordable than comparable sensorless vector drives from major brands, with identical performance specifications verified by independent testing.
What is the maximum motor cable length for 75kW/90kW drives?
Standard limits:
• Unshielded cable: 50 meters maximum
• Shielded cable: 100 meters maximum
Extended distances:
• Up to 150m: Add output reactor
• Up to 300m: Add dv/dt filter or sine-wave filter
For 75kW/90kW drives, we strongly recommend keeping cable runs as short as practical. Long cables increase capacitive charging current and motor insulation stress. Contact our technical team for site-specific cable sizing and filtering recommendations.
FST-650L 75kW/90kW vector VFD: 150% starting torque at 0.5Hz, no encoder needed. Built-in PID + multi-pump logic. 30-40% less than G120/ACS550. Get a quote today.
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