Drivecon VF61 User manual

INTELLIGENT INVERTER
INSTRUCTION MANUAL
12-17-96 REV.
VF61
820 Lakeside Drive - Gurnee, IL. 60031
1-(800) DRIVCON (3 4-8266)
PH: (84 ) 855-9150 FAX: (84 ) 855-9650
http://www.drivecon.com Email: [email protected]
'ULYHFRQ
0 2 7 2 5 ' 5 , 9 ( 6 $ 1 ' & 2 1 7 5 2 / 6

Introduction
Thank you for your purchase of Drivecon Corporation's VF61 series inverter.
Please read through this instruction manual carefully prior to using it and get familiar ith proper
installation, iring and operations to ensure optimum and trouble-free operation.
This instruction manual describes the basic and standard operation procedures. See the catalog for
the specifications, capacity, outer dimensions, environmental conditions and so forth.
The VF61 series is to be used for a custom designed product or system, use the values ritten in the
dra ings or test report of them, not the values sho n in this manual.
Precautions for Safe Operation
1. Supply the specified voltage to the input terminals of the inverter. (If 400V po er supplied to
the 200V type inverter, the inverter ill be broken.)
2. Provide the input side of the inverter ith an MCB of the proper capacity.
3. Be sure to connect the inverter to the ground to prevent accidents.
4. Do not connect the supply line to the output of the inverter. Other ise, the inverter ill be
broken.
5. Do not connect a phase advancing capacitor to the output terminals of the inverter.
Other ise, the inverter ill be broken.
6. Before maintenance ork or inspection, turn the inverter po er off to avoid electric shock.
Wait until the "CHG" LED goes out. Note that the heatsink may be hot in some operating
conditions.
7. Do not change the parts or make reckless alterations.
8. The inverter has no noise suppression device. Please contact us if such a device is necessary.
Memory protection
We recommend that set data be protected against re riting in order to prevent misuse of the console.
(See 2.5)

Table of Contents
1. Before starting operation
1.1 Checking supplied components and parts 1
1.2 Structure of unit 1
1.3 Installation 2
1.4 Circuit construction and terminal iring 3
1.5 Peripheral devices and ire sizes 5
2. Ho to use console
2.1 Display the keys on console 6
2.2 Monitor mode 6
2.3 Function mode 7
2.4 Operation mode 9
2.5 Ho to protect data 9
3. Automatic measuring
3.1 Inputting motor data 10
3.2 Automatic measuring operations 10
4. Operation procedures
4.1 Connecting inverter to motor 11
4.2 Inputting basic data 11
4.3 Operation from console 11
5. Troubleshooting
5.1 Error messages and operations 12
5.2 Troubleshooting 13
5.3 Phase failure of input po er source 14
6. Inspection and maintenance
6.1 Periodical inspection 15
6.2 Insulation resistance test 15
6.3 Precautions for replacing printed circuit board 16
6.4 Disposal 16
7. Appendix
7.1 Enclosure dimensions 17
7.2 Typical iring diagram 18
7.3 Operator unit dimensions 19
7.4 Standard specifications 20
7.5 VF61 Programming chart 21
7.6 D61532 (D61533) Input Signal Isolator Board instructions 26

1. Before starting operation
1.1 Checking supplied components and parts.
When you receive the VF61, check it carefully.
(1) Make sure that the specifications of VF61, accessories and spare parts are properly in
accordance ith your order. Check the logo mark on the cover to see if the unit type is as
you ordered.
Example: 2R2: 2.2
3R7: 3.7 200V type: 22
5R5: 5.5 400V type: 44
7R5: 7.5 Voltage (V)
Inverter capacity (kW)
Applicable po er source INPUT: 380 to 460V, 3-phase, 50/60 Hz
OUTPUT: 2.2kW, 5.5A
(2) Make sure that the supplied VF61 hasn't been damaged during transportation.
(3) Make sure that no scre s, bolts, etc. are loose or dislocated.
If you find some problems, contact the dealer you purchased the VF61 from.
1.2 Structure of the unit
1.2.1 Appearance of unit and components
-1-

-2-
1.2.2 Opening of front cover
If you are going to inspect the VF61 or carry out automatic measuring (described in section 3
belo ), open the front cover as sho n belo .
(1) Remove the fixing scre s from the bottom of the front cover.
(2) Dra the front cover to the front.
(3) When the front cover is fully opened, push it. The cover is fixed in the Up position.
1.3 Installation
1.3.1 The installation condition has great influences upon the service life and reliability of the
inverter. Do not use the inverter in the places sho n belo . Be sure to run the inverter in the op-
erating conditions sho n in the catalog.
(1) A moist or dusty place. A place exposed to ater or oil drips.
If the inverter is used in such a place, the circuit insulation is deteriorated, resulting in shorter
service life of the parts.
(2) Extreme heat or cold out of the specified temperature range.
If the service temperature is too high, bad influences are caused upon capacitors, and parts of
cooling fan or motor, etc.
(3) A place exposed to corrosive gas
Corrosive gas deteriorates the reliability of the parts and/or connecting part.
(4) A place ith much vibrations.
Vibrations cause poor contact of the connectors, disconnection of ires, damage to parts,
etc.
1.3.2 Installation direction
If the VF61 is used separately or built into a control panel, follo the instructions belo .
(1) Installation direction
Install the VF61 vertically ith its marking "VF61" up ard as sho n belo .

-3-
(2) Securing cooling spaces
Provide the VF61 ith proper cool-
ing spaces as sho n on the right.
The cooling fan takes air from the
bottom and exhausts it to the top.
Secure enough spaces so that a ire
duct, etc. do not hinder proper
ventilation.
Install peripheral devices so that heat
generated by them does not reduce
the cooling efficiency of the VF61.
1.4 Circuit construction and riting terminal
1.4.1 Circuit construction
The follo ing sho s the standard circuit construction of the VF61.
Safety Precautions
1. Supply the specified voltage to the inverter. If 400V po er is applied to the 200V type
inverter, damage ill occur. (Note 1)
2. Be sure to provide the inverter ith an MCB of the proper capacity. See 1.5 belo .
(Note 2)
3. Be sure to connect the inverter and motor to the ground to prevent accidents.
(Note 3)
4. Connect a motor to the inverter output terminals. Do not connect the supply line to them.
Other ise, the inverter ill be damaged.
(Note 4)
Options
1. Connect a dynamic brake resistor. (Note 5)
2. Connect a DC reactor DCL. (Note 6)

-4-
Safety Precaution
Terminals 10 and 34 carry 0V of the control circuit. Never connect these terminals to GND.
1.4.2 Terminal blocks
(1) Main circuit terminal block
R, S and T Connect AC po er to these terminals. (Do not supply 400V to the
200V type inverter.)
Terminal 1 and 2 Connect the ires of the optional DC reactor DCL to these terminals.
These terminals are short circuited before shipment.
Terminal 2 and B Connect the optional dynamic braking (DB) resistor to these terminals.
Terminal 2 and 0 Connect the optional DB unit and resistor to these terminals.
(2) Control terminal block

1.5 Peripheral devices and ire sizes
1.5.1 Selection of I/O devices and precautions for main circuit iring.
The follo ing sho s the I/O devices of the VF61 unit and their ire sizes.
-5-
Type VF61-__ __ __ 22
2R222 3R722 5R522 7R522 1122 1522 2222 3022 3722 4522 5522 7522 9022
Applicable motor (HP) 3 5 7.5 10 15 20 30 40 50 60 75 100 130
Peripheral
device
Input MCCB
(Note 1) 15A 20A 30A 40A 60A 60A 100A 125A 150A 225A 300A 400A 400A
Input MC (Note 2) K20 K20 K35 K50 K65 K65 K95 K125 K150 K220 K300 K400 K400
Output MC K20 K20 K25 K35 K50 K65 K95 K125 K150 K220 K300 K300 K400
Wire size
(mm²)
Input side (Note 3) 2.0 2.0 3.5 5.5 8.0 8.0 22 38 38 60 80 150 150
Output side (Note
4) 3.5 5.5 8.0 14 14 22 22 38 38 60 80 100 150
DCL terminals
(1 & 2) 2.0 2.0 3.5 5.5 8.0 14 38 38 50 80 100 150 200
200V type
Type VF61-__ __ __ 44
2R244 3R744 5R544 7R544 1144 1544 2244 3044 3744 4544 5544 7544 11044 16044 20044 25044
Applicable motor (HP) 3 5 7.5 10 15 20 30 40 50 60 75 100 150 200 250 300
Peripheral
device
Input MCCB
(Note 1) 15A 10A 15A 30A 50A 50A 75A 75A 100A 100A 125A 200A 300A 400A 500A 600A
Input MC (Note 2) K20 K20 K20 K25 K35 K50 K50 K80 K95 K100 K125 K180 K300 K400 K600 K600
Output MC K20 K20 K20 K20 K25 K50 K50 K80 K95 K95 K125 K150 K220 K300 K400 K600
Wire size
(mm²)
Input side (Note 3) 2.0 2.0 2.0 2.0 3.5 5.5 8.0 14 14 22 38 60 80 150 200 250
Output side
(Note 4) 2.0 2.0 2.0 3.5 5.5 8.0 8.0 14 22 38 38 80 150 150 150 250
DCL terminals
(1 & 2) 2.0 2.0 2.0 3.5 5.5 8.0 14 22 38 38 60 100 200 250 250 150 (x2)
400V type
Notes:
1. The values of the input MCB sho the rated currents.
(Determine the breaking capacity from the source capacity, etc.)
2. The sho n values are those of the electromagnetic contactors MS-K series made by
Mitsubishi Electric Corp.
3. The ire sizes bet een the MCB and inverter input terminals are the sizes of the KIV or RD
ires.
4. The cable length bet een the inverter and motor should be less than 30 meters. The sho n
values are those of the CV cables.
5. If the input MC is used, the interval bet een turning on and off should be more than 10
minutes.
Safety Precautions
1. If the motor has a phase advancing capacitor, be sure to disconnect it. (If the inverter runs
ith the phase advancing capacitor connected, the inverter may be broken.)
2. Be sure to connect a circuit breaker (input MCB) on the inverter input side.
3. Be sure to connect the inverter and motor to ground.
(Use the exclusive grounding terminal.)

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2. Ho to use console
2.1 Display and Keys on Console
The console has 16 columns x 4 lines LCD and operation keys as sho n belo .
Mode selector keys
Select the operation, func-
tion or monitor mode ith
the OPR, FUNC, or MONI
key. (For details of these
modes, see the follo ing
section.)
Operation selection
keys and operation keys.
Reset key
Data setting key
Numeric entry keys
(Upper)
Function entry keys
(Lo er)
^
Every press of key
alternates these
functions.
()
LCD
This mark designates
that the console is
selected to the numeric
entry key mode.
2.2 Monitor mode
Press the MONI key, and the current setting is displayed as sho n belo .
2.2.1 A monitor code (of 16 codes) and operation condition are displayed.
(See 2.2.2 for displayed items)
* MONITOR *
REM/STOP/FOR/JOG
(00)FOUT
60.0 [Hz]
Indicates selected operation keys.
Indicates a monitor code and its content.
To change a displayed monitor code, press a
numeric key (0-9), function entry key, and up
or do n arro keys.
Stored data (previous data) is displayed.
After operation starts, an operation value is
displayed.
2.2.2 Displayed code list (Items selectable in monitor mode)
Display on LCD Items Units Remarked
00 Fout Output frequency Hz
01 Fref Set frequency Hz
02 Iout Output current A
03 Vout Output voltage V
04 Torq out Torque (Torque current) % Estimated torque is displayed in
percentage
05 Vdc DC voltage V
06 Motor speed Motor (synchronous) revolution rpm
Actual revolution is displayed in ASR
operation. Revolution converted from
frequency is displayed in other
operations.
07 OL counter OL counter %
OL counter begins to count when
current exceeds rated motor current.
OL operation starts at 100%. (OL
set=100%)
08 Line speed Line speed ...

-7-
Display on LCD Items Units Remarked
09 11term check Input terminal check 1 bit 1 is displayed when terminal block is
turned on. For meaning of each bit, se
table below.
10 12term check Input terminal check 2 bit Ditto
11 0-term check Output terminal bit Ditto
12
13
14
15 ROM Version ROM Version
"XX-XX" of ROM software version
VF61-XX-XX is displayed through
conversion of alphabetic characters
into numeric characters like A=0, B=1
and so forth.
16 Special moni For manufacturer’s adjustment
17 Trouble moni Reading error records. Contents of latest five errors and
current, voltage, etc. of these errors are
displayed.
2.3.2 Changing set data
(1) Before changing data
* FUNCTION SET *
(00)Ref(Set).F
45.0[Hz]
* .0 [Hz]
The lo est line is displayed hen the SET
key is pressed.
Display hen numeric entry is selected.
Press the SET key, the numeric entry key is
automatically established. Change data ith
the numeric entry key.
Flicker
The numeric keys may be used.
To change the set data, press the SET key.
2.3 Function mode
Press the FUNC key, and current data is displayed as sho n belo .
2.3.1 The internal data of the setting functions may be checked and changed. (See 2.3.3 belo .)
* FUNCTION SET *
(00)Ref(Set).F
45.0[Hz]
Set data is displayed.
Code number of setting function and contents
are displayed.
To change a displayed code number of the
setting function, press a numeric key (0-9),
function entry key, and up or do n arro key.
SP set-1, SP set-2 and option of sixteen basic
data codes 0 to 15 and expanded items of code
16 may be selected ith the SET, up and do n
arro keys.

-8-
(2) After changing data
* FUNCTION SET *
(00)Ref (Set).F
60.0 [Hz
Change data, then press the SET key.
The lo est display disappears, and ne data
appears.
Code
Numbe Display on LCD Descriptions Set ranges
(Selection
items)
Standard
factory set
data
Setting
resolution Units Rewriting
in
operation Remarks
00 Ref(Set).F Set frequency -Top.F
Top.F 0.0 0.1 Hz O
01 FOR-JOG.F Forward jogging
frequency 0.0 30.0 5.0 0.1 Hz O
02 REV-JOG.F Reverse jogging
frequency 0.0 30.0 5.0 0.1 Hz O
03 Preset1.F Preset frequency 1 -Top.F
Top.F 0.0 0.1 Hz O
04 Preset2.F Preset frequency 2 -Top.F
Top.F 0.0 0.1 Hz O
05 Top.F Max. frequency Fmax
400.0
(Note 1) 60.0 0.1 Hz X Fmax means the maximum of
Ref(Set).F, PC-Base.F and other set
values whose upper limit is Top.F
06 PC-Base.F Power control
(base) frequency 30.0 Top.F 60.0 0.1 Hz X
07 Rated Out.V Rated output
voltage 280-500 140-250 400 200 1 1V VO ODepends on the 400V and 200V classes
08 Accl.Time Acceleration time
(1) 0.1 3600.0 30.0 0.1 sec X
09 Decl.Time Deceleration time
(2) 0.1 3600.0 30.0 0.1 sec X
10 Torq.Boost Torque boost
volume 0.0-20.0 0.0 0.1 % O
11 Min F Min.frequency 0.0-10.0 0.5 0.1 Hz O
12 OL.Set Setting overload
ratio 80-110 100 1 % O
13 V/F Pattern V/F pattern
selection Linear Sqr-Law Bend Linear X Linear: V/F linear
Sqr-Law: V/F square reduction
Bend: V/F folded line
14 Start.Mode Start mode
selection Min.F start Free start Min.F start XMin.F start: Starting at minimum
frequency
Free start: Free starting
15 Stop.Mode Stop mode
selection Decel stop Free stop Decel stop XDecel stop: Stopping after
deceleration
Free stop: Free stopping
16 Function.up Expanded set item
selection
Sp.set-1
Sp.set-2
Option Sp.set-1 O For selecting items 17 and after.
See the application manual.
2.3.3 Set data code list (Items selectable in function mode)
Note 1: When changing the set data of code number 05 "Top.F (maximum frequency)", also
change the over-frequency in the follo ing procedures:
Select code number 16 "Expanded set item selection" to select.
Sp.set-1. Display code number 21 OF.Set. Change data to a value higher than the
setting of code
05 Top.F ith the SET and numeric key entry.
2.3.4 Data recording
(1) When data of each function has been set, it should be protected as sho n in 2.5 belo .
(2) We recommend that function data be stored separately, before maintenance ork, in order to
prevent the data from being lost due to unexpected accidents.

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2.4 Operation Mode
* OPERATION *
REM/STOP/FOR/JOG
(0.0) FOUT
60.0 [Hz]
Display changes if the operation key is pressed.
REM: Remote operation is selected.
DIR: Operation from the console is selected.
FOR/REV: For ard/reverse selection.
JOG: Jogging
START/STOP: Starting or stopping operation.
Monitor code number, content and data.
2.5 Ho to protect Data
On completion of adjustment, protect data in order to prevent it from being ritten or lost by
maloperation, etc..
(1) Remove the cover from the unit. Open the console to the right.
(2) Undo the console. Close the cover.
Safety precaution
Be sure to protect data hile the VFC61 is stopped.
3. Automatic Measuring
The exact constants (resistances) of the motor used ith inverter should be set in order to run the
inverter properly.
Carry out automatic measuring for the motor only by disconnecting the motor from the load.
Safety precaution
As the voltage is impressed to the motor by automatic measuring, connect the GND terminal of the
motor to ground.
Set s itch 4 of SW1 on the control PCB (VFC61) to ON.
Any data cannot be ritten in the function mode.
VFC61
4
3
2
1
ON
SW1

-1 -
3.1 Inputting Motor Data
(1) Press the FUNC key.
(2) Select code number 16. Press the SET key, select
SP, set-2 ith the up or do n arro keys, and press
the SET key again.
(3) Change the code number displayed on the console
one by one ith the up or do n arro key.
Set the data sho n on the right according to the
rating indicated on the name plate of the motor.
(The above table shows the factory set values of t he inverter mo el
7r522)
Code # Functions Set items Data
17 Motor.Cap Rated capacity 7.5kW
18 Motor.V Rated voltage 200V
19 Motor.I Rated current 30A
20 Motor.F Rated frequency 60Hz
21 Motor.RPM Rated revolution 1740 rpm
22 Motor.Pole Number of poles 4 pole
Name plate
Motor
Set the values
shown on the
name plate of
the motor.
r1-ch is displayed on the 7-segment LEDs on the VFC61.
(3) Press the OPR key on the console to select the
operation mode. Make sure that the DIR mode is
established.
Press the START key. (Current flo s to the motor)
(4) After approximately 20 seconds, r1END is
displayed on the 7-segment LEDs in the upper part
of the unit, indicating that automatic measurement is
completed.
Open the console to the right again. Set s itch 3 of
SW1 on the control PCB (VFC61) to OFF. Data
has been set no .
* OPERATION *
DIR/STOP/FOR
(0.0) FOUT
0.0 [Hz]
Display on console
VFC61
4
3
2
1
ON
SW1
3.2 Automatic Measuring Operation
(1) Open the cover. Open the console to the right.
(2) Set s itch 3 of SW1 on the control PCB (VFC61) to ON.
Pin # Functions
1Inputted data is cleared and reset to the standard
data.
2For manufacturer’s adjustment.
(Do not set this switch to ON)
3 Automatic measuring mode.
4 Data protection
Note the follo ing functions of s itches 1 to 4 of SW1.

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4. Operating Procedures
4.1 Connecting inverter to motor
If the inverter output terminal U, V and W are connected to the motor terminals U, V and W and the
motor is operated in the for ard direction, it rotates clock ise vie ed from t he position opposite to
the transmission side.
* OPERATION *
DIR/STOP/FOR/JOG
(0.0) FOUT
5.0 [Hz]
(2) Jogging
Press the JOG key. The motor rotates at the set frequency
(5Hz) hile the JOG key is being pressed.
Select the for ard or reverse direction ith the FOR or
REV key.
4.3 Operation from Console
Press the OPR key to select the operation mode.
Press the DIR key.
(1) Normal operation
Press the START key. Make sure that the motor rotates in
the for ard direction at the set frequency (25Hz). Then,
press the STOP key. The motor is decelerated and then
stops.
* OPERATION *
DIR/STOP/FOR
(0.0) FOUT
5.0 [Hz]
Display on console
Code # Functions Set items (Ex.)
00 Ref(Set).F 25Hz
05 Top.F 60Hz*
06 PC-Base.F 60Hz
07 Rated out V 200V
13 V/F.Pattern Liner
14 Start.Mode Min.F start
15 Stop.Mode Decel stop
4.2 Inputting Basic Data
The values indicated on the name plate of the motor have
been set in automatic measuring described in 3.1 above.
Set the values sho n on the right according to the opera-
tion method. (Also set other items according to necessity)
(1) Press the FUNC key.
(2) Change code numbers displayed on the console ith
the up and do n arro keys, and set the items
sho n on the right one by one.
(3) Select the set frequency (Fref) on the monitor.
Press the MONI key, and code (00) Fout is
selected. Increase the code number to (01) ith the
Up key to select (01) Fref.
Basic data setting
* Setting for 05 Top.F should be equal
to or greater than those for 06 PC-
Base.F.

* OPERATION *
DIR/STOP/FOR
(0.0) FOUT
25.0 [Hz]
Display on console4.4 Operating through Terminal Block
Press the OPR key, then press the REM key.
(1) Activate the for ard operation signal (bet een
terminals 17 and 18 sho n on page 4)
(2) Turn the frequency setter (F.set) sho n on page 4
clock ise. The motor velocity is increased ithin
the time set ith code number 08 Acc.Time.
(Connect the frequency setter properly)
(3) Deactivate the for ard operation signal. The motor
is decelerated ithin the time set ith code number
00 Dec.Time and then stops.
(4) To run the motor reversely, activate the reverse
operation signal (bet een terminals 19 and 18).
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5. Troubleshooting
5.1 Error Messages and Operations
When the inverter malfunctions or becomes out of order, an error message and an error code are
displayed on the console and 5-digit, 7-segment LEDs. The inverter stops and error contacts 3, 4,
and 5 go active hen an error occurs. In such a case, see the table sho n belo , locate the error
cause, and take proper countermeasures. Also refer to the contents and values of monitor code 17
Trouble moni (i.e., reading error records).
Display on console Display
on LEDs Error contents Protection Error contacts Retry Causes and countermeasures
Overcurrent
R&
Excessive output current Inverter
Stops Active The inverter output current exceeds the allowable value. See 5.2.2
IGBT Fault
L*EW
IGBT error
(7.5kW or less) Inverter Stops Active
The IGBT(IPM) is out of order. Error details:
Overcurrent, abnormal gate power supply, or
overheat.
See 5.2.4
IGBT(U) Fault
L*W
IGBT
(U phase) error
(11kW or less)
Inverter
Stops Active
IGBT(V) Fault
L*W
IGBT
(v phase) error
(11kW or less)
Inverter
Stops Active
IGBT(W) Fault
L*W
IGBT
(W phase) error
(11kW or less)
Inverter
Stops Active
Over Voltage
R8
Excessive DC voltage Inverter
Stops Active O The DC voltage exceeds the allowable value.
See 5.2.3
Over Load
R/
Overload
(Electronic thermal) Inverter Stops Active Overload current flows for long time.
See 5.2.5
Blown DC fuse
)8
Main circuit fuse blown Inverter
Stops Active The IGBT is broken, and the fuse blows out.
See 5.2.6
Start Failure
6WU)
Malfunctioning in starting Inverter
Stops Active The inverter fails to start operation, though an
operation signal is inputted. (Instantaneous stop
occurs in the instantaneous stop mode)
Over Freq
R)
Over-frequency Inverter
Stops Active The output frequency exceeds the over-frequency.
EXT Failure-1
(Q
External error 1 Inverter
Stops Active An external error. Check the input.
EXT Failure-2
(Q
External error 2 Active An external error.
Check the input.

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Display on console Display
on LEDs Error contents Protection Error contacts Retry Causes and countermeasures
EXT Failure-3
(Q
External error 3 Inverter
stops Active Check the external error input side.
EXT Failure-4
(Q
External error 4 Inverter
stops Active Check the external error input side.
Panel Error
3Q(U
Console panel error Inverter
stops Active Check the connector of the console panel.
Option Error
23(U
Internal optional board
error Inverter stops Active Check the optional printed circuit board.
EEPROM Error
F6
Data storage error Inverter
stops Active The default data is not stored, or the control board is out of order.
F6
Program memory (ROM)
error Inverter stops Active
X8
Under voltage (Power
failure) Inactive
5.2 Troubleshooting
If trial running fails or an error occurs during operation, locate the cause in the procedures sho n
belo . If there are no applicable items belo , contact us or the dealer you purchased your VF61.
Safety Precautions
1. Never open the cover hile the po er is being supplied to the inverter.
2. Before inspecting the inverter, turn the inverter po er off, open the inverter cover, and make
sure that the CHG LED on the printed board is off.
3. Note that the heat sink may be hot according to the use conditions.
5.2.1 Motor does not run

-14-

-15-
5.3 Phase Failure of Input Po er Source
If the inverter is operated for a long time under phase failure, the inverter's service life may be short-
ened remarkably. Use care.
6. Inspection and Maintenance
6.1 Periodical Inspection
In order to maintain the inverter in the best conditions and make it demonstrate its full performances,
carry out periodical inspection once every six months at least and check any matters hich cannot be
checked in daily inspection.
The inverter and its peripheral equipment should be inspected by an engineer familiar ith safety
precautions and proper handling of electric appliances.
Safety Precautions
1. Turn the inverter po er off to avoid electrocution. Open the front cover, and make sure that
the CHG LED in the lo er part of the printed circuit board is off.
2. Note that the heatsink may be hot in some operating conditions.
Inspection list
Applicable parts Check points
Unit casing Check the ventilation holes and heat sink for dust or foreign matters. Clean
them if dusty.
Cooling fan Check the cooling fan for dust or foreign matters. Clean it if dusty. We
recommend that the cooling fan be replaced after 3 to 5 years of operation,
provided the inverter is used for 12 hours a day.
Inside of unit Check the printed circuit board and other electronic parts for dust or foreign
matters. Clean them if dusty.
Terminal blocks
& set screws Check the terminal blocks and set screws for looseness. Retighten them if loose.
Connectors Check the connectors and terminals of the control PCB for looseness.
Wiring Check the insulating covering of the wires for cracks, deformation or other
defects.
Electrolytic
capacitors
Check the electrolytic capacitors for leakage of electrolyte, discoloration or
other defects. Replace it if some abnormalities are found. The capacitors
should be replaced every five years, provided the inverter is used for 10 hours a
day at the average ambient temperature of 35°C. (See Note below)
Note: Before using spare capacitors hich have been stored for three years or more, mount them in
the inverter, disconnect the output cable from the inverter, and apply rated AC current to the
inverter for eight hours for aging of the capacitors.

-16-
6.3 Precautions for replacing Printed Circuit Board
When the printed board VFC61 is replaced ith a spare board, input the previously-used func-
tion set values from the console.
6.4 Disposal
Dispose of replaced parts and/or spare parts in conformance to the administrative regulations
and ordinances.
Request to distributors:
If you deliver your product incorporating ith this inverter equipment, supply this manual to the
end user. In case you change the data of inverter set at the factory, inform end user of that
details.
6.2 Insulation resistance test
(1) Clean all parts of the inverter, disconnect
all ires, and short circuit the terminals
of the terminal block TB1 on the main
printedcircuit board. Use a 500VDC
megger for insulation resistance test.
(Do not attempt an insulation resistance
test at the terminals of the control cir
cuit.)
(2) On completion of preparation, measure
insulation resistance bet een the termi
nals and GND terminal of TB1 on the
main printed circuit board.
(3) On completion of testing, remove the
shorting ire and connect all connectors
ith care not to miss them. If the po er
is turned on ith some connectors
improperly connected, parts may bedam
aged.

7\SH : : : ' ' + + 0 :(,*+7/%6
9)5
      


9)5
       
9)5
       
9)5
       
9)
       
9)
       
9)
       
9)
      


9)
       
9)
       
9)
       
9)
       
9)
       
9)5
      


9)5
       
9)5
       
9)5
       
9)
       
9)
       
9)
       
9)
      


9)
       
9)
       
9)
       
9)
       
9)
       
9)
       
9)
       
9)
       
7.1 VF61 Enclosure Dimensions
-17-
All imensions in inches. All weights in lbs.
Drivecon reserves the right to change information containe within ue to ongoing pro uct evelopment.