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Preface 

Thank you for choosing 

EPA

’s VFD-L series AC Drive.  The VFD-L series is manufactured  using 

high-quality components, material and incorporating the latest microprocessor technology available. 

This manual will help in the installation, parameter setting, troubleshooting, and daily maintenance of 
the AC motor drive. To guarantee safe operation of the equipment, read the following safety 
guidelines before connecting power to the AC motor drive. Keep this operating manual handy and 
distribute to all users for reference. 

Important Notes: 

 

DANGER! 

AC input power must be disconnected before any maintenance. Do not connect or 

disconnect wires while power is applied to the circuit. Only qualified technicians should perform 
maintenance on the VFD-L.

  

 

CAUTION! 

There are highly sensitive MOS components on the printed circuit boards. These 

components are especially sensitive to static electricity. To avoid damaging these components, 
do not touch the circuit boards with metal objects or your bare hands.

  

 

DANGER! 

A charge may still remain in the DC-link capacitor with hazardous voltages even 

after the power has been turned off. To avoid personal injury, do not remove the cover of the AC 
drive until all “DISPLAY LED” lights on the digital keypad are off.  Please note that there are live 
components exposed when the AC drive is open,. Be careful to not touch these live parts.

  

 

CAUTION! 

Ground the VFD-L using the ground terminal.       The grounding method must 

comply with the laws of the country where the AC drive is to be installed.

 

 

DANGER! 

The AC drive may be destroyed beyond repair if power is misapplied to the 

input/output terminals. Never connect the AC drive output terminals U/T1, V/T2, W/T3 directly 
to the AC main circuit power supply.

  

  

Содержание VFD-L series

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Страница 2: ...re highly sensitive MOS components on the printed circuit boards These components are especially sensitive to static electricity To avoid damaging these components do not touch the circuit boards with...

Страница 3: ...FD007L21A INPUT 1PH 9 7A 3PH 5 1A 200 240V 50 60Hz OUTPUT 3PH 0 240V 4 2A 1 6kVA 1HP Freq Range 1 0 400Hz MADE IN XXXXX 007L21AT101001 AC Drive Model Input Spec Output Spec Output Freq Range Bar Code...

Страница 4: ...D R E V R U N S T O P P R O G D A T A M O D E R E S E T Do not connect AC power to output WARNING Read the user manual before operation Do not inspect components until LEDs are turned off for at least...

Страница 5: ...rent Motor Multi function indication output contacts Factory default Fault Indication Main circuit power terminals Control circuit terminals Shielded leads If the AC Drive model is VFD002L11A B VFD004...

Страница 6: ...ing knob LED display The signal selection for AVI to input DC0 10V or 4 20 mA U T1 V T2 W T3 R L1 S L2 T L3 Control circuit wiring RA RC 10V AVI M0 M1 M2 M3 GND 120VAC DC28V 3A Relay Wire Gauge 22 24A...

Страница 7: ...s U T1 V T2 and W T3 are connected to the motor terminals U V and W respectively the motor will rotate counterclockwise as viewed from the shaft ends of the motor when a forward operation command is r...

Страница 8: ...alue C 2 Display Process Operation 1 tt 3 Display DC BUS voltage U 4 Display output voltage E 0 a 0 05 User defined coefficient K 0 1 160 1 0 0 06 Software version Read only 0 07 Password input 0 999...

Страница 9: ...Parameters Functions Settings Factory Setting 2 00 Source of frequency command 0 Digital keypad 1 0 10V from AVI 2 4 20mA from AVI 3 Controlled by V R on drive 4 RS 485 communication interface 0 2 01...

Страница 10: ...ters Parameters Functions Settings Factory setting a 4 00 Potentiometer bias freq 0 0 350Hz 0 0 a 4 01 Potentiometer bias polarity 0 positive bias 1 negative bias 0 a 4 02 Potentiometer freq gain 1 20...

Страница 11: ...e program cycle step by step separate by STOP 0 5 04 PLC forward reverse motion 0 15 0 Forward 1 Reverse 0 5 05 Time duration step 0 0 65500 Sec 0 5 06 Time duration step 1 0 65500 Sec 0 5 07 Time dur...

Страница 12: ...exceed during acceleration 10 ocd current exceed during deceleration 11 ocn current exceed during steady state 0 Group 7 Motor Parameters Parameters Functions Settings Factory Setting a 7 00 Motor ra...

Страница 13: ...tion 0 AVR function enable 1 AVR function disable 2 AVR function disable when decel 2 8 16 Dynamic braking voltage 350 450V 380 8 17 DC braking lower bound limit 0 0 400 Hz 0 0 Group 9 Communication P...

Страница 14: ...voltage has exceeded its maximum allowable value 1 Check whether the input voltage falls within the rated AC drive input voltage 2 Check for possible voltage transients 3 Bus over voltage may also be...

Страница 15: ...an not be programmed 1 Switch off power supply 2 Check whether the input voltage falls within the rated AC drive input voltage 3 Switch the AC drive back on Internal memory IC can not be read 1 Check...

Страница 16: ...20mA output impedance 250 multi function inputs1 to 3 3steps JOG UP DOWN command communication setting Operation Setting Keypad Setting by RUN STOP keys Signal External Signal M0 M1 M2 M3 can be combi...

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