Fan Inverter, Water Pump Inverter

This product has been discontinued and removed from our shelves.

The AS160 frequency inverter is classified into fan inverter and water pump inverter according to its application. Our water pump inverter is a newly developed AC drive for industrial and civil use water pumps. It is flexible and convenient to use, and provides water supply system with multiple functions, like constant pressure water supply, and water pump switch functions, etc. Our fan inverter and water pump inverters are designed based on international advanced electrical motor control technology, so they offer superior motor control performance. In addition, we also make improvements on our fan inverter and water pump inverter according to market demand and its working environments, making our frequency inverter ideal for use on not only fans and water pumps, but also mixers and conveyors, etc. With multiple frequency-setting methods, our fan inverter and water pump inverter are able to meet users' diversified application demands.

Design Advantages of STEP Fan Inverter and Water Pump Inverter
1. Username and password are necessary while starting our fan inverter and water pump inverter, which ensures system operation safety. Meanwhile, the low inductance bus also helps ensure operation safety.
2. New type PWM inverter dead time compensation method and dynamic carrier modulation technology help effectively reduce the noise and losses in electric motors. With automatic rotor copper loss compensation function, our fan inverter and water pump inverter can ensure the constant speed of electric motors.
3. With PID control function, our fan and water pump inverters can achieve process control conveniently. Also, they come with automatic voltage regulation function, so they can keep constant voltage output even when there is power grid voltage fluctuation. In addition, our fan inverter and water pump inverter are designed with frequency hopping control function to effectively avoid the resonance point of mechanical loads, and rotational speed tracking function to allow a rotating motor to start again smoothly.
4. STEP fan inverter and water pump inverter have reliable structure design. They have independent air duct, and compact structure, and are resistant to water, dust and vibration. Meanwhile, they can work at wide range of input voltages, and are designed with automatic detection function when powered on, complete terminal protection, overheat alarming, whole machine protection, high precision electrical circuit detection and protection, and more functions.
5. Water pump inverter functions
With multiple V/F curves, the frequency inverter is ideal for water pumps and related variable-torque loads. Without a need of PLC or water supply system controller, the water pump inverter allows the water pump to realize commonly used water supply functions. To illustrate, it mainly supports two types of water supply modes, namely standard variable frequency pump water supply and circulating pump water supply.
The water pump inverter is able to control different types of water pumps, including standard pumps, sewage pump, fire pump, etc. It can control 7 pumps synchronously. Meanwhile, it allows water pumps to work alternatively to make sure the operation time of each water pump is almost the same. When the water pump inverter is used for sewage pump control, it can offer automatic water level detection function to control the water level for sewage pools. The liquid level detection and control function is also available for water reservoirs, and the inverter can adjust the pumping pressure according the liquid level.
In addition, our water pump inverters enable water pumps to offer different pumping pressures in maximally 8 time slots, so as to satisfy the changing demand for water supply. Through the combination of input terminals, the water pumps can then work with 16 types of pumping pressure.
6. Both our fan inverter and water pump inverter have over-voltage and under-voltage alarming function. Meanwhile, they can output serial communication signals through the programmable relay, thus achieving the barrier-free communication between the inverter and its control computer and making automatic control and management possible.

Technical Specifications of STEP Fan Inverter and Water Pump Inverter
Input Rated voltage 380v~460v(-15%~+10%), 3-phase power supply Optional 220v~240v, 3-phase power supply
Rated frequency 50/60HZ
Allowable voltage/frequency change Voltage imbalance ≤3%; Allowable frequency fluctuation: ±5%
Voltage dips Under-voltage protection is available in 15ms, when there is three phase, AC380V-460V power supply, and input voltage is less than AC 300V
Output Voltage(V) Three-phase, 0 to rated input voltage
Frequency range V/F control: 0.00~300.00HZ
Overload capacity 120% overload: 1 min, 150% overload: 3s
Efficiency(full load) 7.5kw and below ≧93%; 45kw and below ≧95%; 55kw and above ≧98%
Precision of output frequency ±0.01%(digital command, -10~45℃) ±0.01%( analog command, 25±10℃)
Digital input/output Digital input 8 input channels. Input function can be user-defined.
Pulse frequency input 2 input channels, maximum input frequency: 0~50HZ
Open collector output 2 output channels, output function can be user-defined
Relay output 4-output channels, Normally open and close contacts are available Contact capacity: resistance,5A 250VAC or 5A 30 VDC Output function can be user-defined.
Pulse frequency output 1 output channel, 0~50kHZ open collector pulse square signal output, programmable
Analog input/output Analog voltage input 2 input channels, -10~+10 VDC or 0~+10 VDC, precision 0.1%
Analog current input 1 input channel, 0~20mA, precision 0.1%
Analog voltage output 2 output channel, -10~+10 VDC, precision 0.1%
Potentiometer voltage Provide +10 VDC power supply for setting speed of potentiometer (maximum 25mA)
Control characteristics Carrier frequency 2~16kHZ, carrier frequency may be adjusted automatically according to the load characteristics
Preset frequency resolution 0.01hz (digital command) ±0.06hz/120hz (analog command, 11bit + unsigned)
Operation command channel Operation command is given via operation panel, control terminal or communication signals
Multiple frequency reference modes Operation panel, digital/analog terminals, communication mode, performance function
Torque boost Automatic torque boost; manual torque boost
V/F curve User-defined V/F curve, linear V/F curve and 5 kinds of torque-decreasing characteristic curve
Automatic voltage regulation (AVR) The duty ratio of output PWM signal is adjusted automatically according to the fluctuation of bus voltage, so as to reduce output voltage fluctuation caused by unstable power grid voltage
Instantaneous power down disposal At the time of instantaneous power down, bus voltage control is available so as to realize uninterrupted operation
DC braking capacity Braking current: 0.0~150.0% rated current
Unique functions Parameter copy function The standard operation panel can realize the parameter upload, download and display the copy progress. The user can select the upload forbidden function to avoid parameters be overwritten.
Process PID For closed-loop control of process variable
Common DC bus Multiple inverter can share the same DC bus
Power on self test Our fan inverter and water pump inverter are able to realize the power-on auto-detection of internal and peripheral circuits, including motor grounding, abnormal +10v power supply output, abnormal analog signal input, and disconnection, etc.
Motor protections Rotor locking
Motor overload
Motor overheat (PTC)
Speed limitation
Torque limitation
Fan and water pump inverter protection functions Output current limitation Operation Environment Location
Torque limitation Ambient temp.
Overload protection Temperature derating
IGBT overload protection Altitude
Input power supply undervoltage/overvoltage protection Height derating
DC bus undervoltage /overvoltage protection Ambient humidity
IGBT overheat protection Vibration
Radiator overheat protection Storage temp.
Power failure Protection class
+10v power output abnormity protection
Analog input signal loss (loss of speed reference value)
Abnormal communication protection
Others Cooling type Forced air cooling
Installation method In cabinet
Certification CE
Rated input Fan/water pump inverter model Rated output current(A) Applicable motor(kw) Overload 120% 1min (A)
200~240V AS160 2T02P2 9 2.2 14
AS160 2T03P7 14 3.7 22
AS160 2T05P5 22 5.5 34
AS160 2T07P5 32 7.5 48
380~460V AS160 4T02P2 5 2.2 6
AS160 4T00P3 7 3 8.5
AS160 4T00P4 9 4 11
AS160 4T05P5 11 5.5 13
AS160 4T0011 22 11 26
AS160 4T0015 30 15 36
AS160 4T18P5 36 18.5 43
AS160 4T0022 44 22 53
AS160 4T0030 57 30 68
AS160 4T0037 72 37 86
AS160 4T0045 90 45 108
AS160 4T0055 112 55 134
AS160 4T0075 150 75 180
AS160 4T0090 176 90 211
AS160 4T0110 210 110 252
AS160 4T0132 250 132 300
AS160 4T0160 302 160 362
AS160 4T0200 352 200 423
AS160 4T0220 385 220 462
AS160 4T0280 520 280 780
AS160 4T0315 585 315 877
AS160 4T0355 650 355 975
AS160 4T0400 740 400 1110

Note: As for fan inverter and water pump inverters for 4-pole AC motor (1500r/min) with higher power and voltage class, please contact STEP Corporation. Be sure to check the motor nameplate to make sure selected water pump or fan inverter is compatible with the motor.

STEP is a professional fan inverter, water pump inverter manufacturer based in China. We provide a vast array of products including elevator inverter, full serial VVVF control cabinet, elevator group control system, and more.

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