learn vfd in a day - delta
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Understanding
“VFD”
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Variable Frequency Drive
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Practical
Demonstration of
VFD
Delta- M Series
1.5 KW
I/P: 230V 1/3 Phase
O/P: 230 3 Phasenfi
Motor OFF Command Freq. Parameters Direction AmperesOutput Freq.
VFD Status Screen
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Keypad Control
TerminalsFreq. Display
POT
Extended
Terminal Blocksnfi
Control Terminals
Relay Feedback
TerminalsFreq. Feedback
Analog Voltage
Input
Analog Current
Inputnfi
Motor Brake
Terminals
Motor Output
Terminals
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3 Phase/ 1 Phase
220 VAC
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Important Parameters used in various Applications
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
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Important Parameters used in various Applications
Source of Frequency Command
• Master frequency determined by digital keypad
Frequency Increment
Frequency Decrement
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Important Parameters used in various Applications
Source of Frequency Command
• Master frequency determined by 0 to +10 V input on
AVI terminal
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Important Parameters used in various Applications
Source of Frequency Command
• Master frequency determined by 4 to 20mA input on
ACI terminal
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Important Parameters used in various Applications
Source of Frequency Command
• Master frequency determined by Rs 485 Comm. port
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Important Parameters used in various Applications
Source of Frequency Command
• Master frequency determined by potentiometer on
digital keypad
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Important Parameters used in various Applications
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 ineffectivenfi
Important Parameters used in various Applications
Source of Operation Command
• Operation determined by digital keypad
RUN
STOP
VFD RUNNINGVFD STOP
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Important Parameters used in various Applications
Source of Operation Command
• Operation determined by external control terminals,
keypad STOP is effective
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Important Parameters used in various Applications
Source of Operation Command
• Operation determined by external control terminals,
keypad STOP is ineffective
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Important Parameters used in various Applications
Source of Operation Command
• Operation determined by external control terminals,
keypad STOP is effective
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Important Parameters used in various Applications
Operation Control of VFD2 Wire Control (1)– On/Off & Direction
from Toggle Button
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Important Parameters used in various Applications
Operation Control of VFD2 Wire Control (2) – On/Off & Direction
from Toggle Button
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Important Parameters used in various Applications
Operation Control of VFD3 Wire Control – On/Off from Push Button &
Toggle Button for Direction Control
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Important Parameters used in various Applications
Source of Operation Command
• Operation determined by RS 485 Comm. port,
keypad STOP is effective
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Important Parameters used in various Applications
Source of Operation Command
• Operation determined by RS 485 Comm. port,
keypad STOP is ineffective
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Important Parameters used in various Applications
STOP Method
• Ramp Stop
• Coast Stop
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Important Parameters used in various Applications
Maximum Output Frequency Range
0 ~ 400 Hz
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Important Parameters used in various Applications
Acc./ Dec. Time
Voltage / Frequency Setting for various Applications
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Important Parameters used in various Applications
Jog FrequencyTo adjust the Speed of Motor at Jog Mode
Jog Acc./ Dec Time0.1 to 600.0 sec or 0.01 to 600.0 sec
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Important Parameters used in various Applications
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 Time0.1 to 600.0 sec or 0.01 to 600.0 secnfi
VFD
Biasing
“Adjusting Voltage
by Frequency
Curves”
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VFD Biasing
0 5V 10V
1 Volt = 5 Hz
0 Hz
25 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
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0 5V 10V
1 Volt = 5 Hz
0 Hz
25 Hz
50 Hz
10 Hz
Bias Adjustment
Bias Adjustment =
(Bias Range)/(Full range) x 100
= 10/50 x 100
= 20%
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
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VFD Biasing
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0 5V 10V
0 Hz
25 Hz
50 Hz
10 Hz
Bias Adjustment
(Full Freq. Range – Bias Freq. range) / (Full voltage range) = (Bias Freq. – 0 Hz) / XV
Bias Adjustment = (XV/ Full voltage Range) x 100
Pot. Freq Gain = (Full voltage Range)/ (Effective Voltage Range) x 100
Pot. Freq Gain
-2.5V
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
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VFD Biasing
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0 5V
1 Volt = 5 Hz
0 Hz
25 Hz
50 Hz
Pot. Freq Gain
10V
Pot. Freq Gain = (Full voltage Range)/ (Effective Voltage Range) x 100
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
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VFD Biasing
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0 5V 10V
50 Hz
15 Hz
Bias Adjustment
Pot. Freq Gain
4.28
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
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(Full Freq. Range – Bias Freq. range) / (Full voltage range) = (Bias Freq. – 0 Hz) / XV
Bias Adjustment = (XV/ Full voltage Range) x 100
Pot. Freq Gain = (Full voltage Range)/ (Effective Voltage Range) x 100
VFD Biasing
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0 5V 10V
0 Hz
25 Hz
50 Hz
Bias Adjustment
Bias Adjustment =
(Bias Voltage Range)/(Full Voltage range) x 100
= 1/10 x 100
= 10%
1
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
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45 Hz
VFD Biasing
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0 5V 10V
0 Hz
25 Hz
50 HzPr.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
Pot. Freq Gain
Pot. Freq Gain = (Full voltage Range)/ (Effective Voltage Range) x 100
Bias Adjustment =
(Bias Voltage Range)/(Full Voltage range) x 100
= 1/10 x 100
= 10%
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Bias Adjustment
VFD Biasing
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0 5V 10V
0 Hz
25 Hz
50 Hz
Pr.03= 50Hz--Max. output Freq.
Pr.48= 50%--bias adjustment
Pr.49= 1 -- bias polarity
Pr.50= 200% -- pot. freq. gain
Pr.51= 1 -- REV disable in negative bias
Pot. Freq Gain = (Full voltage Range)/ (Effective Voltage Range) x 100
Bias Adjustment =
(Bias Voltage Range)/(Full Voltage range) x 100
= 5/10 x 100
= 50%
25 Hz
50 Hz
7.5V
2.5V
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Rev
Fwd
VFD Biasing
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0 5V 10V
0 Hz
25 Hz
50 HzPr.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
Bias Adjustment =
(Bias Voltage Range)/(Full Voltage range) x 100
= 10/10 x 100
= 100%
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VFD Biasing
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Important Parameters used in various Applications
Analog Output SignalAnalog Frequency Meter
(0 to Maximum Output Frequency)
Analog Current Meter
(0 to 250% of the rated AC drive current)
Analog Output Gain 0 ~ 200%nfi
Important Parameters used in various Applications
Over–Voltage Stall PreventionOver-Current Stall Prevention during Acceleration
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PLC & VFD Advanced Course4 PLC’s Training
Platforms
For more courses visit www.nfiautomation.org
Course Highlights:
• 30 Live Practical Classes on PLC, Analog Cards & AC drives- VFD
• 100+ PLC Video Tutorials with Lifetime Access & FREE PLC Simulator
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Thank You
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