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Help Center220V Cooling Tower Fan Speed Controller for Electric Motors
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Certification:CE
220V Cooling Tower Fan Speed Controller for Electric Motors
A cooling tower extracts heat from process cooling water. Common applications for cooling towers provide cooled water for air conditioning, manufacturing, and electric power generation.
A variable frequency drive can correctly identify the cooling tower fan rotation, slow the motor speed to zero (when opposite rotation is detected), and accelerate the fan in the correct direction. The VFD drive eliminates brakes, anti-ratcheting devices, and time delays. Running the fan slower, which raises tower and water temperatures, can prevent icing in cold weather. A VFD can reverse a cooling tower fan and keep the heat in the tower, if necessary. In warm weather, fans can be run faster, providing additional cooling capacity.
Application Challenges
· Energy savings
· Reduce maintenance requirements (personnel and equipment replacement costs)
· Precisely control process water temperature stabilization
Power range of M VFD
Voltage: 1 phase 220VAC (200VAC – 240VAC)
Power: 0.4kw/0.5HP – 7.5kw/10HP
Specification of M VFD
|
Item |
Specification |
|
Input frequency |
50/60Hz |
|
Output frequency |
0-400Hz |
|
Overload current |
150% rated current 1min. |
|
Control mode |
V/F control |
|
Starting torque |
150% 5Hz |
|
Control precision |
±0.5% |
|
Given Frequency Resolution |
Digital given: 0.01Hz, analog given: 0.05Hz |
|
Running Mode |
Keyboard, control terminal, RS485 |
|
Output Voltage self-adjustment |
When AVR function is enabled, the input voltage changes, while the output voltage almost remains unchanged |
|
Frequency setting signal |
0~+10V; 0~20mA; |
|
Protection function |
Short circuit, overcurrent, overload, overvoltage, undervoltage, default phase, overheating, and external fault, etc. |
|
Enclosure |
IP20 |
|
Cooling mode |
forced air cooling |
|
Vibration |
Less than 0.5g |
|
Ambient temperature / Humidity |
-10 Degrees~+40 Degrees / 20~90%Rh (no condensation) |
Tips:
Avariable-frequency drive (VFD) is a system for controlling the rotational speed of an alternating current (AC) electric motor by controlling the frequency of the electrical power supplied to the motor. A variable frequency drive is a specific type of adjustable-speed drive. Variable-frequency drives are also known as adjustable-frequency drives (AFD), variable-speed drives (VSD), AC drives, microdrives or inverter drives. Since the voltage is varied along with frequency, these are sometimes also called VVVF (variable voltage variable frequency) drives.
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