YASKAWA VS MINI J7 User manual

VS mini J7 Series
Instruction Manual
COMPACT GENERAL-PURPOSE INVERTER
VOLTAGE VECTOR CONTROL)

2
PREFACE
YASKAWA’s VS mini J7 is a compact and simple
inverter that is as easy to use as a contactor. This
instruction manual describes installation, maintenance,
inspection, troubleshooting, and specifications of the
VS mini J7. Read this instruction manual thoroughly
before operation.
YASKAWA ELECTRIC CORPORATION
General Precautions
• Some drawings in this manual are shown with the protective covers and shields
removed, in order to illustrate detail with more clarity. Make sure all covers and
shields are replaced before operating this product.
• This manual may be modified when necessary to reflect improvements to the
product, or changes in specifications.
Such modifications are denoted by a revised manual No.
• To order a copy of this manual, contact your Y SK W representative.
• Y SK W is not responsible for any modification of the product made by the
user. ny modifications will void the warranty.

3
CONTENTS
NOTES FOR SAFE OPERATION. . . . . . . . . . . . . . . . . . . . . 5
1. RECEIVING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
•Checking the Name Plate . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
2. IDENTIFYING THE PARTS . . . . . . . . . . . . . . . . . . . . . . 13
3. SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
•Standard Specifications 200V Class) . . . . . . . . . . . . . . . . . . 15
•Standard Specifications 400V Class) . . . . . . . . . . . . . . . . . . 18
•Standard Wiring. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
•Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
•Parameters List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
4. MOUNTING. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
•Choosing a Location to Mount the Inverter . . . . . . . . . . . . . . 35
•Mounting Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
•Mounting/Removing Components . . . . . . . . . . . . . . . . . . . . . 37
5. WIRING. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
•Wiring Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
•Wire and Terminal Screw Sizes . . . . . . . . . . . . . . . . . . . . . . 39
•Wiring the Main Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
•Recommended Peripheral Devices . . . . . . . . . . . . . . . . . . . . 43
•Wiring the Control Circuit. . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
•Wiring Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
6. OPERATING THE INVERTER . . . . . . . . . . . . . . . . . . . . 47
•Test Run . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
•Operating the Digital Operator. . . . . . . . . . . . . . . . . . . . . . . . 49
•LED Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
•Simple Data Setting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55

4
7. PROGRAMMING FEATURES . . . . . . . . . . . . . . . . . . . . 57
•Parameter Set-up and Initialization . . . . . . . . . . . . . . . . . . . .57
•Setting V/f pattern . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
•Switching LOCAL/REMOTE Modes . . . . . . . . . . . . . . . . . . . 61
•Selecting Run/Stop Commands. . . . . . . . . . . . . . . . . . . . . . .62
•Selecting Frequency Reference . . . . . . . . . . . . . . . . . . . . . . 63
•Setting Operation Condition . . . . . . . . . . . . . . . . . . . . . . . . .65
•Selecting Stopping Method . . . . . . . . . . . . . . . . . . . . . . . . . .82
•Building Interface Circuits with External Devices. . . . . . . . . . 84
•Setting Frequency by Current Reference Input . . . . . . . . . . . 89
•Decreasing Motor Speed Fluctuation . . . . . . . . . . . . . . . . . . 93
•Motor Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94
•Selecting Cooling Fan Operation. . . . . . . . . . . . . . . . . . . . . .96
•Using MEMOBUS MODBUS) Communications
when option card is installed). . . . . . . . . . . . . . . . . . . . . . .96
8. MAINTENANCE AND INSPECTION . . . . . . . . . . . . . . . 99
•Periodical Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .99
•Part Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99
9. FAULT DIAGNOSIS AND CORRECTIVE ACTIONS. . 103
APPENDIX . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111
•CE Conformance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111

5
NOTES FOR SAFE OPERATION
Read this instruction manual thoroughly before installation, operation, maintenance or
inspection of the VS mini. In this manual, NOTES FOR S FE OPER TION are
classified as “W RNING” or “C UTION”.
Indicates a potentially hazardous situation which, if not avoided, could result in death
or serious injury to personnel.
Indicates a potentially hazardous situation which, may result in minor or moderate
injury to personnel, and possible damage to equipment if not avoided. It may also be
used to alert against unsafe practices.
Items described in may also result in a vital accident in some situations. In
either case, follow these important notes.
RECEIVING
WARNING
CAUTION
These are steps to be taken to ensure proper operation.
CAUTION
(Ref. page)
• Do not install or operate any inverter which is damaged or
has missing parts.
Failure to observe this caution may result in personal injury or
equipment damage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
CAUTION

6
MOUNTING
WIRING
CAUTION
(Ref. page)
• Lift the inverter by the cooling fin. When moving the unit, never
lift by the plastic case or the terminal covers.
Failure to observe this caution may cause the unit to be dropped resulting in
damage to the unit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
• Mount the inverter on nonflammable material i.e., metal).
Failure to observe this caution can result in a fire. . . . . . . . . . . . . . . . . . . . . . . 13
• When mounting open chassis in an enclosure, install a fan
or other cooling device to keep the intake air temperature
below 122°F 50°C).
Overheating may cause a fire or damage to the unit. . . . . . . . . . . . . . . . . . . . . 35
• The VS mini J7 generates heat. For effective cooling, mount it
vertically.
Refer to the figure in “Mounting Dimensions” on page 16.
WARNING
(Ref. page)
• Start wiring only after verifying that the power supply
is turned OFF for at least one minute, and all LED’s and
change LED’s are extinguished.
Failure to observe this warning can result in electric shock
or fire. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
• Wiring should be performed only by qualified personnel.
Failure to observe this warning can result in electric shock
or fire. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
• When wiring the emergency stop circuit, check the wiring
thoroughly before operation.
Failure to observe this warning can result in personal injury. . . . . . . . . . . . . . 39

7
WARNING
(Ref. page)
• For 400V class, make sure to ground the supply neutral.
• Make sure to ground the ground terminal according to the
local ground code.
Failure to observe this warning can result in electric shock
or fire. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
CAUTION
(Ref. page)
• Verify that the inverter rated voltage coincides with the
AC power supply voltage.
Failure to observe this caution can result in personal injury
or fire.
• Do not perform a withstand voltage test of the inverter.
It may cause semi-conductor elements to be damaged.
• Make sure to tighten terminal screws of the main circuit
and the control circuit.
Failure to observe this caution can result in a malfunction,
damage or a fire. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
• Never connect the AC main circuit power supply to output
terminals U, V and W.
The inverter will be damaged and void the warranty. . . . . . . . . . . . . . . . . . . . 42
• Do not connect or disconnect wires or connectors while
power is applied to the circuit.
Failure to observe this caution can result in personal injury.
• Do not change signal/control wiring during operation.
The machine or the inverter may be damaged.

8
OPERATION
WARNING
(Ref. page)
• Only turn ON the input power supply after replacing the
digital operator or optional blank cover.
Do not remove the digital operator or the covers while
current is flowing.
Failure to observe this warning can result in electric shock.
• Never operate the digital operator or dip switches when
your hand is wet.
Failure to observe this warning can result in electric shock.
• Never touch the terminals while current is flowing, even
when the inverter is stopped.
Failure to observe this warning can result in electric shock.
• When the fault retry function is selected, stand clear of
the inverter or the load. It may restart unexpectedly
after being stopped.
(Construct machine system, so as to assure safety for personnel,
even if the inverter should restart.) Failure to observe this
warning can result in personal injury.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75
• When continuous operation after power recovery is selected,
stand clear of the inverter or the load. It may restart
unexpectedly after being stopped.
(Construct machine system, so as to assure safety for personnel,
even if the inverter should restart.) Failure to observe this
warning can result in personal injury.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70
• Since the digital operator stop button can be disabled by a
parameter setting, install a separate external emergency stop switch.
Failure to observe this warning can result in personal injury.
• If an alarm is reset with the operation signal ON, the inverter
restarts automatically. Only reset the alarm after verifying that
the operation signal is OFF.
Failure to observe this warning can result in personal injury. . . . . . . . . . . . . . 46

9
MAINTENANCE AND INSPECTION
CAUTION
(Ref. page)
• Never touch the heatsink or braking resistor, the
temperature is very high.
Failure to observe this caution can result in harmful burns
to the body.
• Since it is easy to change operation speed from low to
high speed, verify the safe working range of the motor
and machine before operation.
Failure to observe this caution can result in personal injury
and machine damage.
• Install a holding brake separately if necessary.
Failure to observe this caution can result in personal injury.
• Do not change signals during operation.
The machine or the inverter may be damaged.
• All the parameters of the inverter have been preset at
the factory. Do not change the settings unnecessarily.
The inverter may be damaged. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
WARNING
(Ref. page)
• Never touch high-voltage terminals in the inverter.
Failure to observe this warning can result in an electrical shock. . . . . . . . . . . 99
• Disconnect all power before performing maintenance or
inspection. Then wait at least one minute after the power
supply is disconnected and all LEDs and CHARGE LED
are extinguished.
The capacitors discharge slowly, and may be dangerous. . . . . . . . . . . . . . . . . 99

10
Others
WARNING
(Ref. page)
• Do not perform a voltage withstand test on any part of
the VS mini J7.
This electronic equipment uses semiconductors and it is vulnerable
to high voltage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99
• Only authorized personnel should perform
maintenance, inspections or parts replacement.
[Remove all metal objects (watches, bracelets, etc.) before operation.]
(Use tools which are insulated against electrical shock.)
Failure to observe this warning can result in an electrical shock. . . . . . . . . . . 99
CAUTION
(Ref. page)
• The control PC board employs CMOS ICs.
Do not touch the CMOS elements.
They are easily damaged by static electricity.
• Do not connect or disconnect wires, digital operator,
connectors, or cooling fan while power is applied to the circuit.
Failure to observe this caution can result in personal injury. . . . . . . . . . . . . . . 99
WARNING
(Ref. page)
• Never modify the product.
Failure to observe this warning can result in an electrical shock or
personal injury and will void the warranty.