VFD system for Solar Pump (MPPT)

VFD for Solar Pump system   World is growing and growing faster. Energy needs are growing alongwith. Fossil energy sources such as Coal, Oil, and Gas are going to exhaust soon. According to a serve Oil will last for next 80 years, Coal for next 150 years and gas for next hundred years. So now humans are finding new energy sources to survive. Solar energy…

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VFD does not show display or Keypad is not Glowing/turning on.

VFD does not show display or Keypad is not Glowing/turning on. When you give supply to AC drives and display doesn’t turn on you can do the following process to troubleshoot VFD issues. It does matter which drive you have checking process is almost same. (allen Bradley, ABB, Danfoss, Delta, CG, Hitachi, Fuji or any other brand) Check Input Supply Voltage. Check whether you have…

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Over Voltage Fault / Alram

 VFD Trips on Overvoltage Fault? Ac drives shows overvoltage error My Drive Shows  This Fault AB ( Allen Bradley ) – Fault F3 ABB – Fault A2002 Danfoss – Fault 7 Delta – Fault ov Fuji- Fault OV1, OV2 and OV3 Hitachi – Fault 2, E07.3 and E07.4 Schneider – Altivar Fault ObF Siemens Fault F30002 Toshiba – Fault OP1, OP2 and OP3 When drive…

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Close loop and Open Loop Vector control Methods

What is vector control (closed loop vector) control?   Current s controlled with respect to Torque and flux components in vector control of VFD. This is achieved by VFD based on the rotor position, rotor speed and motor parameters. RPM and torque are controlled rather than output frequency. Relationship between voltage and frequency is decided by operating conditions. In Close loop Vector control generally Encoder…

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