Understanding VFD. Variable Frequency Drive. nfi. nfi

Transcription

1 Understanding VFD Variable Frequency Drive

2 Practical Demonstration of VFD Delta- M Series 1.5 KW I/P: 230V 1/3 Phase O/P: Phase

3 VFD Status Screen Motor OFF Command Freq. Parameters Direction Amperes Output Freq.

4 Freq. Display Keypad Control Terminals POT Extended Terminal Blocks

5 Control Terminals Relay Feedback Terminals Freq. Feedback Analog Voltage Input Analog Current Input

6 Motor Brake Terminals Motor Output Terminals

7 3 Phase/ 1 Phase 220 VAC

8 Source of Frequency Command Master frequency determined by digital keypad Master frequency determined by 0 to +10 V input on AVI terminal Master frequency determined by 4 to 20mA input on ACI terminal Master Frequency Determined by Rs 485 Comm. port Master frequency determined by potentiometer on digital keypad

9 Source of Frequency Command Master frequency determined by digital keypad Frequency Increment Frequency Decrement

10 Source of Frequency Command Master frequency determined by 0 to +10 V input on AVI terminal

11 Source of Frequency Command Master frequency determined by 4 to 20mA input on ACI terminal

12 Source of Frequency Command Master frequency determined by Rs 485 Comm. port

13 Source of Frequency Command Master frequency determined by potentiometer on digital keypad

14 Source of Operation Command Operation determined by digital keypad Operation determined by external control terminals, keypad STOP is effective Operation determined by external control terminals, keypad STOP is ineffective Operation determined by RS 485 Comm. port, keypad STOP is effective Operation determined by RS 485 Comm. port, keypad STOP is ineffective

15 Source of Operation Command Operation determined by digital keypad VFD STOP VFD RUNNING RUN STOP

16 Source of Operation Command Operation determined by external control terminals, keypad STOP is effective

17 Source of Operation Command Operation determined by external control terminals, keypad STOP is ineffective

18 Source of Operation Command Operation determined by external control terminals, keypad STOP is effective

19 Operation Control of VFD 2 Wire Control (1) On/Off & Direction from Toggle Button

20 Operation Control of VFD 2 Wire Control (2) On/Off & Direction from Toggle Button

21 Operation Control of VFD 3 Wire Control On/Off from Push Button & Toggle Button for Direction Control

22 Source of Operation Command Operation determined by RS 485 Comm. port, keypad STOP is effective

23 Source of Operation Command Operation determined by RS 485 Comm. port, keypad STOP is ineffective

24 STOP Method Ramp Stop Coast Stop

25 Maximum Output Frequency Range 0 ~ 400 Hz

26 Acc./ Dec. Time Voltage / Frequency Setting for various Applications

27 Jog Frequency To adjust the Speed of Motor at Jog Mode Jog Acc./ Dec Time 0.1 to sec or 0.01 to sec

28 Second Source of Frequency Command Keypad Up/Down AVI (0-10V) ACI (4-20mA) Keypad Potentiometer Reverse Operation Inhibition Parameter Lock PLC Operation Jog Acc./ Dec Time 0.1 to sec or 0.01 to sec

29 VFD Biasing Adjusting Voltage by Frequency Curves

30 VFD Biasing 1 Volt = 5 Hz 50 Hz Pr.03=50Hz--Max. output Freq. Pr.48=0%--bias adjustment Pr.49=0 -- bias polarity Pr.50=100% -- pot. freq. gain Pr.51=0 -- REV disable in negative bias 25 Hz 0 Hz 0 5V 10V

31 VFD Biasing 50 Hz 1 Volt = 5 Hz Pr.03= 50Hz--Max. output Freq. Pr.48= 20%--bias adjustment Pr.49= 0 -- bias polarity Pr.50= 100% -- pot. freq. gain Pr.51= 0 -- REV disable in negative bias Bias Adjustment 25 Hz 10 Hz 0 Hz 0 5V 10V Bias Adjustment = (Bias Range)/(Full range) x 100 = 10/50 x 100 = 20%

32 VFD Biasing Bias Adjustment = (XV/ Full voltage Range) x 100 (Full Freq. Range Bias Freq. range) / (Full voltage range) = (Bias Freq. 0 Hz) / XV Pot. Freq Gain = (Full voltage Range)/ (Effective Voltage Range) x 100 Bias Adjustment 50 Hz 25 Hz 10 Hz 0 Hz -2.5V Pot. Freq Gain 0 5V 10V Pr.03= 50Hz--Max. output Freq. Pr.48= 25%--bias adjustment Pr.49= 0 -- bias polarity Pr.50= 80% -- pot. freq. gain Pr.51= 0 -- REV disable in negative bias

33 VFD Biasing Pot. Freq Gain = (Full voltage Range)/ (Effective Voltage Range) x Hz 25 Hz 0 Hz 0 5V Pot. Freq Gain 10V Pr.03= 50Hz--Max. output Freq. Pr.48= 0%--bias adjustment Pr.49= 0 -- bias polarity Pr.50= 200% -- pot. freq. gain Pr.51=0 -- REV disable in negative bias 1 Volt = 5 Hz

34 VFD Biasing Bias Adjustment = (XV/ Full voltage Range) x 100 (Full Freq. Range Bias Freq. range) / (Full voltage range) = (Bias Freq. 0 Hz) / XV Pot. Freq Gain = (Full voltage Range)/ (Effective Voltage Range) x 100 Bias Adjustment 50 Hz 15 Hz 4.28 Pot. Freq Gain 0 5V 10V Pr.03= 50Hz--Max. output Freq. Pr.48= 42.8 %bias adjustment Pr.49= 0 -- bias polarity Pr.50= 70 % pot. freq. gain Pr.51= 0 -- REV disable in negative bias

35 VFD Biasing Bias Adjustment = (Bias Voltage Range)/(Full Voltage range) x 100 = 1/10 x 100 = 10% 50 Hz 45 Hz 25 Hz Pr.03= 50Hz--Max. output Freq. Pr.48= 10%--bias adjustment Pr.49= 1 -- bias polarity Pr.50= 100% -- pot. freq. gain Pr.51= 0 -- REV disable in negative bias 0 Hz 0 1 5V 10V Bias Adjustment

36 VFD Biasing Pot. Freq Gain Bias Adjustment = (Bias Voltage Range)/(Full Voltage range) x 100 = 1/10 x 100 = 10% 50 Hz 25 Hz Pr.03= 50Hz--Max. output Freq. Pr.48= bias adjustment Pr.49= 1 -- bias polarity Pr.50= -- pot. freq. gain Pr.51= 0 -- REV disable in negative bias 0 Hz Bias Adjustment 0 5V 10V Pot. Freq Gain = (Full voltage Range)/ (Effective Voltage Range) x 100

37 VFD Biasing 50 Hz 25 Hz Fwd Bias Adjustment = (Bias Voltage Range)/(Full Voltage range) x 100 = 5/10 x 100 = 50% 2.5V 0 Hz 0 5V 7.5V 10V Pr.03= 50Hz--Max. output Freq. Rev 25 Hz Pr.48= 50%--bias adjustment Pr.49= 1 -- bias polarity Pr.50= 200% -- pot. freq. gain 50 Hz Pr.51= 1 -- REV disable in negative bias Pot. Freq Gain = (Full voltage Range)/ (Effective Voltage Range) x 100

38 VFD Biasing Bias Adjustment = (Bias Voltage Range)/(Full Voltage range) x 100 = 10/10 x 100 = 100% 50 Hz 25 Hz Pr.03=50Hz--Max. output Freq. Pr.48=100%--bias adjustment Pr.49=1 -- bias polarity Pr.50=100% -- pot. freq. gain Pr.51=1 -- REV disable in negative bias 0 Hz 0 5V 10V

39 Analog Output Signal Analog Frequency Meter (0 to Maximum Output Frequency) Analog Current Meter (0 to 250% of the rated AC drive current) Analog Output Gain 0 ~ 200%

40 Over Voltage Stall Prevention Over-Current Stall Prevention during Acceleration

41 Thank You