Understanding VFD Allen Bradley Power Flex 4M Variable Frequency Drive nfi
Practical Demonstration of VFD Motor Speed Directly Proportional to Frequency Motor RPM= (120*F)/P Powerflex- 4M 0.4 KW= 0.5 Hp I/P: 230V 1/3 Phase O/P: 230 3 Phase
Maximum Output Frequency Range 0 ~ 400 Hz
VFD Status Screen Command Freq. Volts reading Amperes Indicates freq. Control by VFD POT Motor RUN/Stop Indication Indicates Operation. Control by Keypad Direction RUN VFD Parameters STOP VFD Fault Keys to Read/Write Parameters Change Direction
Control Terminals Relay Feedback Terminals Freq. Feedback (0 ~ 10 V) (0 ~ 50Hz) Analog Current Input (4 ~ 20mA) Analog Voltage Input (0 ~ 10V)
Motor Output Terminals
3 Phase/ 1 Phase 220 VAC
VFD Wiring Diagram Power Flex 4M Parameters to be used in this Course
How to? Reset the Drive & Enter Start-up Parameters nfi
AB Powerflex 4M Programming the VFD Step 1: Reset the Drive to Factory Setting Parameter: P112 Reset to Default Resets all parameter values to factory defaults.
AB Powerflex 4M Step 2: Enter Motor related Parameters P101 Motor NP Voltage Stop drive before changing this parameter. Set to the motor nameplate rated voltage. P102 Motor NP Hertz Stop drive before changing this parameter. Set to the motor nameplate rated frequency. P103 Motor OL Current Set to the maximum allowable motor current. P104 Minimum Frequency Sets the lowest frequency the drive will output continuously. Min/Max: 0.0/400.0 Hz P105 Maximum Frequency Sets the highest frequency the drive will output continuously. Min/Max: 0.0/400.0 Hz
Keypad Source of Operation nfi
AB Powerflex 4M Source of Operation P106 Start Source Stop drive before changing this parameter. Sets the control scheme used to start the drive.
3 Wire Source of Operation nfi
AB Powerflex 4M Source of Operation P106 Start Source Stop drive before changing this parameter. Sets the control scheme used to start the drive.
2 Wire Source of Operation nfi
AB Powerflex 4M Source of Operation P106 Start Source Stop drive before changing this parameter. Sets the control scheme used to start the drive.
AB Powerflex 4M Stop Method P107 Stop Mode Active stop mode for all stop sources 0 Ramp, CF (1) (Default) P110 Dec. Time Ramp to Stop. Stop command clears active fault. 1 Coast, CF (1) Coast to Stop. Stop command clears active fault.
Drive Pot Source of Speed nfi
AB Powerflex 4M Parameter Organization - Program P108 Speed Reference Sets the source of the speed reference to the drive.
Internal Freq. Source of Speed nfi
AB Powerflex 4M Parameter Organization - Program P108 Speed Reference Sets the source of the speed reference to the drive.
0 ~ 10 VIN Source of Speed nfi
AB Powerflex 4M Parameter Organization - Program P108 Speed Reference Sets the source of the speed reference to the drive.
Preset Freq. Source of Speed nfi
AB Powerflex 4M Parameter Organization - Program P108 Speed Reference Sets the source of the speed reference to the drive. DIN 2 DIN 1 Speed Parameter Speed (in Hz) 0 0 A410 10 Hz 0 1 A411 5 Hz 1 0 A412 15 Hz 1 1 A413 20Hz
Acc./Dec. Time nfi
Acc./ Dec. P109 Acc. Time Sets the rate of deceleration for all speed decreases. AB Powerflex 4M P110 Dec. Time Sets the rate of deceleration for all speed decreases.
Acc./Dec. Time 2 nfi
AB Powerflex 4M Acc./ Dec. 2 Step 1- Enter the Time Default Acc./Dec. Time Acc./Dec. Time 2 P109 Acc. Time Sets the rate of acceleration (0 ~ 600secs). A401 Acc. Time 2 Sets the rate of acceleration (0 ~ 600secs). P110 Dec. Time Sets the rate of deceleration (0.1 ~ 600secs). A402 Dec. Time Sets the rate of deceleration. (0.1 ~ 600secs) Step 2- Assign the Function T201/T202 DIN Function Enter 1 for Acc./Dec. Time 2 Step 3- Energize DIN 1/DIN 2
JOG Mode nfi
AB Powerflex 4M Jog/Inch Frequency To adjust the Speed of Motor at Jog Mode Jog Acc./ Dec Time Step 2- Assign the Function T201/T202 DIN Function Enter 2 for Jog Mode Step 3- Energize DIN 1/DIN 2 0.1 to 600.0 sec or 0.01 to 600.0 sec Step 1- Enter the Jog Freq., Acc./Dec. Time A404- Jog Freq. A405- Jog Acc./Dec. Time
Local Control nfi
AB Powerflex 4M Local Control When active, sets integral keypad as start source and potentiometer on the integral keypad as speed source Step 1- Assign the Function T201/T202 DIN Function Enter 5 for Local Operation Step 2- Energize DIN 1/DIN 2 Speed Source Operation Source
Aux Fault nfi
AB Powerflex 4M Aux Fault- NC When enabled, an F2 Auxiliary Input fault will occur when the input is removed. Step 1- Assign the Function Step 2- Energize DIN 1 To include fault T201 DIN Function Enter 3 for Aux Fault Clear Fault- NO When active, clears an active fault. Step 1- Assign the Function Step 2- Energize DIN 2 T202 DIN Function To clear the fault Enter 7 for Clear Fault
Override 0 ~ 10 VIN Source of Speed nfi
AB Powerflex 4M Override 0 ~ 10VIN Selects 0-10V or ±10V control as the frequency reference. Start source is not changed. Step 1- Assign the Function Step 2- Energize DIN 1/DIN 2 To override 0 ~ 10V Source T201/T202 DIN Function Enter 13 for 0 ~ 10VIN
VFD Scaling Adjusting Voltage by Frequency Curves
www.nfiautomation.org VFD Scaling P105 Max. Freq. (0 ~ 400Hz) 50 Hz 1 Volt =5Hz 25 Hz P104 Min. Freq. 0 Hz (0 ~ 400 Hz) T211 = 0% (default) Range 0 ~ 100% 0V 5V 10V t211 Min. Volts t212 Max. Volts T212 = 100% (default) Range 0 ~ 100%
www.nfiautomation.org VFD Scaling P105 Max. Freq. (0 ~ 400Hz) 50 Hz 20 Hz P104 Min. Freq. (10 Hz) 10 Hz T211 = 0% (default) Range 0 ~ 100% 0V 5V 10V t211 Min. Volts t212 Max. Volts T212 = 100% (default) Range 0 ~ 100%
www.nfiautomation.org VFD Scaling Scaling Value = Bias Voltage/Full Voltage x 100 = 1/10 x 100 = 10% P105 Max. Freq. (0 ~ 400Hz) 50 Hz 25 Hz P104 Min. Freq. (0 ~ 400 Hz) 0 Hz 1V 4.5V 10V t211 Min. Volts T211 = 10% Range 0 ~ 100% t212 Max. Volts T212 = 100% (default) Range 0 ~ 100%
www.nfiautomation.org VFD Scaling Scaling Value = Bias Voltage/Full Voltage x 100 = 5/10 x 100 = 50% P105 Max. Freq. (0 ~ 400Hz) 50 Hz 25 Hz P104 Min. Freq. (0 ~ 400 Hz) 0 Hz 5V t211 Min. Volts T211 = 50% Range 0 ~ 100% 7.5V 10V t212 Max. Volts T212 = 100% (default) Range 0 ~ 100%
www.nfiautomation.org VFD Scaling P105 Max. Freq. (0 ~ 400Hz) 50 Hz P104 Min. Freq. (0 ~ 400 Hz) 25 Hz 0 Hz 0V t211 Min. Volts 2.5V T211 = 0% Range 0 ~ 100% 5V t212 Max. Volts Scaling Value = (Full voltage - Bias Voltage)/Full Voltage x 100 = (10-5/10 x 100 = 50% T212 = 50% Range 0 ~ 100%
www.nfiautomation.org VFD Scaling P105 Max. Freq. (0 ~ 400Hz) 50 Hz Scaling Value = Bias Voltage/Full Voltage x 100 = 2.5/10 x 100 = 25% 25 Hz Scaling Value = (Full voltage - Bias Voltage)/Full Voltage x 100 = (10-2.5/10 x 100 = 75% P104 Min. Freq. (0 ~ 400 Hz) 0 Hz t211 Min. Volts T211 = 25% Range 0 ~ 100% 2.5V 5V 7.5V t212 Max. Volts T212 = 75% Range 0 ~ 100%
www.nfiautomation.org VFD Scaling P105 Max. Freq. (0 ~ 400Hz) 50 Hz Scaling Value = Bias Voltage/Full Voltage x 100 = 5/10 x 100 = 50% P104 Min. Freq. (0 ~ 400 Hz) 25 Hz Scaling Value = (Full voltage - Bias Voltage)/Full Voltage x 100 = (10-2.5/10 x 100 = 75% 0 Hz t211 Min. Volts T211 = 50% Range 0 ~ 100% 5V 7.5V t212 Max. Volts T212 = 75% Range 0 ~ 100%
Feedback Signals nfi
Feedback Relay Type Related Parameter: t221 & t222 Sets the condition that changes the state of the output relay contacts. Sets the trip point for the digital output relay if the value of t221 [Relay Out Sel] is 6, 7, 8, 10 or 11. 1. VFD Operation Run & Stop t221 =2 2. VFD Running Reverse t221 = 3 3. VFD Desired Frequency Attained t221= 6 t222 = Frequency
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Thank You nfi