YASKAWA Varispeed CIMR-G7A User manual

YASKAWA
Varispeed G7
INSTRUCTION MANUAL
YA S K AWA
MANUAL NO. TOE-S616-60.1D
GENERAL PURPOSE INVERTER (ADVANCED VECTOR CONTROL)
MODEL:CIMR-G7A
Upon receipt of the product and prior to initial operation, read these instructions
thoroughly, and retain for future reference.
200V CLASS 0.4 to 110kW (1.2 to 160kVA)
400V CLASS 0.4 to 300kW (1.4 to 460kVA)

i
Preface
This manual is designed to ensure correct and suitable
application of Varispeed G7-Series Inverters. Read
this manual before attempting to install, operate, main-
tain, or inspect an Inverter and keep it in a safe, conve-
nient location for future reference. Be sure you
understand all precautions and safety information
before attempting application.
General Precautions
• The diagrams in this manual may be indicated without covers or safety shields to show details.
Be sure to restore covers or shields before operating the Units and run the Units according to the
instructions described in this manual.
• Any illustrations, photographs, or examples used in this manual are provided as examples only
and may not apply to all products to which this manual is applicable.
• The products and specifications described in this manual or the content and presentation of the
manual may be changed without notice to improve the product and/or the manual.
• When ordering a new copy of the manual due to damage or loss, contact your Yaskawa represen-
tatives or the nearest Yaskawa sales office and provide the manual number shown on the front
cover.
• If nameplates become warn or damaged, order new ones from your Yaskawa representatives or
the nearest Yaskawa sales office.

ii
Safety Information
The following conventions are used to indicate precautions in this manual. Failure to heed pre-
cautions provided in this manual can result in serious or possibly even fatal injury or damage to
the products or to related equipment and systems.
Failure to heed a precaution classified as a caution can result in serious consequences depending
on the situation.
Indicates precautions that, if not heeded, could possibly result in loss of life or serious injury.
Indicates precautions that, if not heeded, could result in relatively serious or minor injury, damage
to the product, or faulty operation.
IMPORTANT
Indicates important information that should be memorized.
WARNING
CAUTION

iii
Safety Precautions
Confirmations upon Delivery
Installation
Wiring
CAUTION
• Never install an Inverter that is damaged or missing components.
Doing so can result in injury.
CAUTION
• Always hold the case when carrying the Inverter.
If the Inverter is held by the front cover, the main body of the Inverter may fall, possibly resulting in injury.
• Attach the Inverter to a metal or other noncombustible material.
Fire can result if the Inverter is attached to a combustible material.
• Install a cooling fan or other cooling device when installing more than one Inverter in the same
enclosure so that the temperature of the air entering the Inverters is below 45°C.
Overheating can result in fires or other accidents.
WARNING
• Always turn OFF the input power supply before wiring terminals.
Otherwise, an electric shock or fire can occur.
• Wiring must be performed by an authorized person qualified in electrical work.
Otherwise, an electric shock or fire can occur.
• Be sure to ground the ground terminal. (200 V Class: Ground to 100 Ωor less, 400 V Class:
Ground to 10 Ωor less)
Otherwise, an electric shock or fire can occur.
• Always check the operation of any emergency stop circuits after they are wired.
Otherwise, there is the possibility of injury. (Wiring is the responsibility of the user.)
• Never touch the output terminals directly with your hands or allow the output lines to come into con-
tact with the Inverter case. Never short the output circuits.
Otherwise, an electric shock or ground short can occur.
• If the power supply is turned ON during the FWD (or REV) Run Command is given, the motor will
start automatically.
Turn the power supply ON after verifying that the RUN signal is OFF.
Failure to observe this warning may result in injury.
• When the 3-wire sequence is set, do not make the wiring for the control circuit unless the multi-
function input terminal constant is set.
Failure to observe this warning may result in injury.
CAUTION
• Check to be sure that the voltage of the main AC power supply satisfies the rated voltage of the
Inverter.
Injury or fire can occur if the voltage is not correct.
• Do not perform voltage withstand tests on the Inverter.
Otherwise, semiconductor elements and other devices can be damaged.
• Connect braking resistors, Braking Resistor Units, and Braking Units as shown in the I/O wiring
examples.
Otherwise, a fire can occur.

iv
Setting User Constants
Trial Operation
• Tighten all terminal screws to the specified tightening torque.
Otherwise, a fire may occur.
• Do not connect AC power to output terminals U, V, and W.
The interior parts of the Inverter will be damaged if voltage is applied to the output terminals.
• Do not connect phase-advancing capacitors or LC/RC noise filters to the output circuits.
The Inverter can be damaged or interior parts burnt if these devices are connected.
• Do not connect electromagnetic switches or magnetic contactors to the output circuits.
If a load is connected while the Inverter is operating, surge current will cause the overcurrent protection circuit inside the
Inverter to operate.
CAUTION
• Disconnect the load (machine, device) from the motor before performing rotational autotuning.
The motor may turn, possibly resulting in injury or damage to equipment. Also, motor constants cannot be correctly set
with the motor attached to a load.
• Stay clear of the motor during rotational autotuning.
The motor may start operating suddenly when stopped, possibly resulting in injury.
WARNING
• Check to be sure that the front cover is attached before turning ON the power supply.
An electric shock may occur.
• Do not come close to the machine when the fault reset function is used. If the alarmed is cleared,
the machine may start moving suddenly.
Also, design the machine so that human safety is ensured even when it is restarted.
Injury may occur.
• Provide a separate emergency stop switch; the Digital Operator STOP Key is valid only when its
function is set.
Injury may occur.
• Reset alarms only after confirming that the RUN signal is OFF.
Injury may occur.
CAUTION
• Don't touch the radiation fins (heatsink), braking resistor, or Braking Resistor Unit. These can
become very hot.
Otherwise, a burn injury may occur.
• Be sure that the motor and machine is within the applicable ranges before starting operation.
Otherwise, an injury may occur.
• Provide a separate holding brake if necessary.
Always construct the external sequence to confirm that the holding brake is activated in the event
of an emergency, a power failure, or an abnormality in the Inverter.
Failure to observe this caution can result in injury.
• If using an Inverter with an elevator, take safety measures on the elevator to prevent the elevator
from dropping.
Failure to observe this caution can result in injury.
• Don't check signals while the Inverter is running.
Otherwise, the equipment may be damaged.
CAUTION

v
Maintenance and Inspection
Other
• Be careful when changing Inverter settings. The Inverter is factory set to suitable settings.
Otherwise, the equipment may be damaged.
WARNING
• Do not touch the Inverter terminals. Some of the terminals carry high voltages and are extremely
dangerous.
Doing so can result in electric shock.
• Always have the protective cover in place when power is being supplied to the Inverter. When
attaching the cover, always turn OFF power to the Inverter through the MCCB.
Doing so can result in electric shock.
• After turning OFF the main circuit power supply, wait until the CHARGE indicator light goes out
before performing maintenance or inspections.
The capacitor will remain charged and is dangerous.
• Maintenance, inspection, and replacement of parts must be performed only by authorized person-
nel.
Remove all metal objects, such as watches and rings, before starting work. Always use grounded tools.
Failure to heed these warning can result in electric shock.
• For 400-V class Inverters of 55 kW to 300 kW with SPEC E or later, take safety measures such as
the installation of an emergency-stop switch before adjusting constants.
Failure to do so may result in injury caused by the motor accidentally rotating during stationary autotuning performed by
the Inverter when the constants are adjusted.
CAUTION
• A CMOS IC is used in the control board. Handle the control board and CMOS IC carefully.
The CMOS IC can be destroyed by static electricity if touched directly.
• Do not change the wiring, or remove connectors or the Digital Operator, during operation.
Doing so can result in personal injury.
WARNING
• Do not attempt to modify or alter the Inverter.
Doing so can result in electrical shock or injury.
CAUTION
• Do not subject the Inverter to halogen gases, such as fluorine, chlorine, bromine, and iodine, at any
time even during transportation or installation.
Otherwise, the Inverter can be damaged or interior parts burnt.
CAUTION

vi
Warning Information and Position
There is warning information on the Inverter in the position shown in the following illustration.
Always heed the warnings.
Warning Information
Illustration shows the CIMR-G7A20P4
Warning
information
position
Illustration shows the CIMR-G7A2018
Warning
information
position
!WARNING
Risk of electric shock.
yRead manual before installing.
yWait 5 minutes for capacitor discharge
after disconnecting power supply.
!AVERTISSEMENT
Risque de décharge électrique.
yLire le manuel avant l' installation.
yAttendre 5 minutes aprés la coupure de
l' allmentation. Pour permettre la
décharge des condensateurs.
y
y
!

vii
Warranty Information
Free Warranty Period and Scope
Warranty Period
This product is warranted for twelve months after being delivered to Yaskawa’s customer or if
applicable eighteen months from the date of shipment from Yaskawa’s factory whichever comes
first.
Scope of Warranty
Inspections
Periodic inspections must be conducted by the customer. However, upon request, Yaskawa or
one of Yaskawa’s Service Centers can inspect the product for a fee. In this case, if after confer-
ring with the customer, a Yaskawa product is found to be defective due to Yaskawa workman-
ship or materials and the defect occurs during the warranty period, then this fee will be waived
and the problem remedied free of charge.
Repairs
If a Yaskawa product is found to be defective due to Yaskawa workmanship or materials and the
defect occurs during the warranty period, Yaskawa will provide a replacement, repair the defec-
tive product, and provide shipping to and from the site free of charge.
However, if the Yaskawa Authorized Service Center determines that the problem with a
Yaskawa product is not due to defects in Yaskawa’s workmanship or materials, then the cus-
tomer will be responsible for the cost of any necessary repairs. Some problems that are outside
the scope of this warranty are:
•Problems due to improper maintenance or handling, carelessness, or other reasons where the
customer is determined to be responsible.
•Problems due to additions or modifications made to a Yaskawa product without Yaskawa’s
understanding.
•Problems due to the use of a Yaskawa product under conditions that do not meet the recom-
mended specifications.
•Problems caused by natural disaster or fire.
•Or other problems not due to defects in Yaskawa workmanship or materials.
Warranty service is only applicable within Japan.
However, after-sales service is available for customers outside of Japan for a reasonable fee.
Contact your local Yaskawa representative for more information.
Exceptions
Any inconvenience to the customer or damage to non-Yaskawa products due to Yaskawa's
defective products whether within or outside the warranty period are NOT covered by this war-
ranty.
Restrictions
•The Varispeed G7 was not designed or manufactured for use in devices or systems that may
directly affect or threaten human lives or health.
•Customers who intend to use the product described in this manual for devices or systems
relating to transportation, health care, space aviation, atomic or electric power, or underwater
use must contact their Yaskawa representatives or the nearest Yaskawa sales office before-
hand.
•This product has been manufactured under strict quality-control guidelines. However, if this
product is to be installed in any location where failure of this product could involve or result
in a life-and-death situation or loss of human life or in a facility where failure may cause a
serious accident or physical injury, safety devices must be installed to minimize the likelihood
of any accident.

viii
Registered Trademarks
The following registered trademarks are used in this manual.
•DeviceNet is a registered trademark of the ODVA (Open DeviceNet Vendors Association,
Inc.).
•InterBus is a registered trademark of Phoenix Contact Co.
•ControlNet is a registered trademark of ControlNet International, Ltd.
•LONWORKS is a registered trademark of the Echelon.
Before Reading This Manual
There are places in this manual where the constants and explanations depend on the software
version. Explanations for both old and new versions are provided. Parts that are shaded and
parts where “PRG: 102only” appears apply to G7-series Inverters with software version
PRG: 102and later. Parts where “PRG: 103only” appears apply only to G7-series Inverters
with software version PRG: 103.
Be sure to confirm the PRG number on the Inverter’s nameplate. An example is given below.
Inverter model
Input specifications
Output
specifications
Lot number
Serial number
Input specifications
Inverter
specifications
Mass
G
1020 Version of software
UL FILE NO.: E131457
UL file number

ix
Contents
1 Handling Inverters .................................................................. 1-1
Varispeed G7 Introduction ............................................................................1-2
Varispeed G7 Models .....................................................................................................1-2
Confirmations upon Delivery ........................................................................1-3
Checks............................................................................................................................1-3
Nameplate Information ...................................................................................................1-3
Component Names.........................................................................................................1-5
Exterior and Mounting Dimensions...............................................................1-7
Open Chassis Inverters (IP00) .......................................................................................1-7
Enclosed Wall-mounted Inverters [NEMA1 (Type 1)] .....................................................1-8
Checking and Controlling the Installation Site ............................................1-10
Installation Site .............................................................................................................1-10
Controlling the Ambient Temperature ...........................................................................1-10
Protecting the Inverter from Foreign Matter..................................................................1-10
Installation Orientation and Space.............................................................. 1-11
Removing and Attaching the Terminal Cover .............................................1-12
Removing the Terminal Cover ......................................................................................1-12
Attaching the Terminal Cover........................................................................................1-12
Removing/Attaching the Digital Operator and Front Cover ........................1-13
Inverters of 15 kW or Less............................................................................................1-13
Inverters of 18.5 kW or More ........................................................................................1-16
Removing and Attaching the Protection Cover...........................................1-17
Removing the Protection Cover....................................................................................1-17
Attaching the Protection Cover .....................................................................................1-18
2 Wiring....................................................................................... 2-1
Connections to Peripheral Devices ..............................................................2-2
Connection Diagram.....................................................................................2-3
Terminal Block Configuration........................................................................2-5
Wiring Main Circuit Terminals .......................................................................2-6
Applicable Wire Sizes and Closed-loop Connectors ...................................................... 2-6
Main Circuit Terminal Functions ...................................................................................2-13
Main Circuit Configurations...........................................................................................2-14
Standard Connection Diagrams.................................................................................... 2-15
Wiring the Main Circuits................................................................................................2-16
Wiring Control Circuit Terminals .................................................................2-22

x
Wire Sizes and Closed-loop Connectors...................................................................... 2-22
Control Circuit Terminal Functions ............................................................................... 2-24
Control Circuit Terminal Connections........................................................................... 2-28
Control Circuit Wiring Precautions ............................................................................... 2-29
Wiring Check.............................................................................................. 2-30
Checks ......................................................................................................................... 2-30
Installing and Wiring Option Boards........................................................... 2-31
Option Board Models and Specifications...................................................................... 2-31
Installation ....................................................................................................................2-31
PG Speed Control Board Terminals and Specifications ............................................... 2-32
Wiring ........................................................................................................................... 2-34
Wiring Terminal Blocks................................................................................................. 2-38
Selecting the Number of PG (Encoder) Pulses ............................................................ 2-39
3 Digital Operator and Modes....................................................3-1
Digital Operator ............................................................................................ 3-2
Digital Operator Display ................................................................................................. 3-2
Digital Operator Keys ..................................................................................................... 3-2
Modes .......................................................................................................... 3-4
Inverter Modes ............................................................................................................... 3-4
Switching Modes ............................................................................................................ 3-5
Drive Mode ..................................................................................................................... 3-6
Quick Programming Mode.............................................................................................. 3-7
Advanced Programming Mode....................................................................................... 3-9
Verify Mode .................................................................................................................. 3-12
Autotuning Mode .......................................................................................................... 3-13
4 Trial Operation .........................................................................4-1
Trial Operation Procedure ............................................................................ 4-2
Trial Operation Procedures .......................................................................... 4-3
Setting the Power Supply Voltage Jumper (400 V Class Inverters of 55 kW or Higher) 4-3
Power ON....................................................................................................................... 4-3
Checking the Display Status .......................................................................................... 4-4
Basic Settings................................................................................................................. 4-5
Settings for the Control Methods.................................................................................... 4-7
Autotuning ......................................................................................................................4-9
Application Settings...................................................................................................... 4-15
No-load Operation ........................................................................................................ 4-15
Loaded Operation......................................................................................................... 4-15
Check and Recording User Constants ......................................................................... 4-16
Adjustment Suggestions ............................................................................ 4-17

xi
5 User Constants ....................................................................... 5-1
User Constant Descriptions..........................................................................5-2
Description of User Constant Tables ..............................................................................5-2
Digital Operation Display Functions and Levels ...........................................5-3
User Constants Settable in Quick Programming Mode .................................................. 5-4
User Constant Tables ...................................................................................5-8
A: Setup Settings ............................................................................................................5-8
Application Constants: b ............................................................................................... 5-10
Autotuning Constants: C...............................................................................................5-21
Reference Constants: d ................................................................................................5-27
Motor Constant Constants: E........................................................................................5-33
Option Constants: F......................................................................................................5-39
Terminal Function Constants: H ...................................................................................5-46
Protection Function Constants: L..................................................................................5-58
N: Special Adjustments.................................................................................................5-68
Digital Operator Constants: o........................................................................................ 5-72
T: Motor Autotuning ...................................................................................................... 5-76
U: Monitor Constants .................................................................................................... 5-77
Factory Settings that Change with the Control Method (A1-02) ...................................5-86
Factory Settings that Change with the Inverter Capacity (o2-04) .................................5-89
6 Constant Settings by Function.............................................. 6-1
Frequency Reference ...................................................................................6-2
Selecting the Frequency Reference Source ...................................................................6-2
Using Multi-Step Speed Operation .................................................................................6-5
Run Command .............................................................................................6-8
Selecting the Run Command Source ............................................................................. 6-8
Stopping Methods.......................................................................................6-10
Selecting the Stopping Method when a Stop Command is Sent...................................6-10
Using the DC Injection Brake........................................................................................6-14
Using an Emergency Stop ............................................................................................6-15
Acceleration and Deceleration Characteristics...........................................6-16
Setting Acceleration and Deceleration Times...............................................................6-16
Accelerating and Decelerating Heavy Loads (Dwell Function).....................................6-20
Preventing the Motor from Stalling During Acceleration
(Stall Prevention During Acceleration Function) ...........................................................6-21
Preventing Overvoltage During Deceleration
(Stall Prevention During Deceleration Function)...........................................................6-23
Preventing Overvoltage by Automatically Reducing the Regenerative Torque Limit
(Overvoltage Inhibit Function, PRG: 102only) ..........................................................6-24
Adjusting Frequency References ...............................................................6-26
Adjusting Analog Frequency References .....................................................................6-26
Operation Avoiding Resonance (Jump Frequency Function) .......................................6-29
Adjusting Frequency Reference Using Pulse Train Inputs ...........................................6-31

xii
Speed Limit (Frequency Reference Limit Function) ................................... 6-32
Limiting Maximum Output Frequency........................................................................... 6-32
Limiting Minimum Frequency ....................................................................................... 6-32
Improved Operating Efficiency ................................................................... 6-34
Reducing Motor Speed Fluctuation (Slip Compensation Function) .............................. 6-34
Compensating for Insufficient Torque at Startup and Low-speed Operation
(Torque Compensation)................................................................................................ 6-36
Hunting-prevention Function ........................................................................................ 6-38
Stabilizing Speed (Speed Feedback Detection Function) ............................................ 6-39
Machine Protection .................................................................................... 6-40
Reducing Noise and Leakage Current ......................................................................... 6-40
Limiting Motor Torque (Torque Limit Function) ............................................................ 6-44
Preventing Motor Stalling During Operation ................................................................. 6-47
Changing Stall Prevention Level during Operation Using an Analog Input .................. 6-48
Using Frequency Detection: L4-01 to L4-05................................................................. 6-48
Detecting Motor Torque ................................................................................................ 6-51
Changing Overtorque and Undertorque Detection Levels Using an Analog Input ....... 6-54
Motor Overload Protection ........................................................................................... 6-55
Setting Motor Protection Operation Time ..................................................................... 6-57
Motor Overheating Protection Using PTC Thermistor Inputs ....................................... 6-58
Limiting Motor Rotation Direction ................................................................................. 6-60
Continuing Operation ................................................................................. 6-61
Restarting Automatically After Power Is Restored........................................................ 6-61
Speed Search............................................................................................................... 6-62
Continuing Operation at Constant Speed When Frequency Reference Is Lost ........... 6-69
Restarting Operation After Transient Fault (Auto Restart Function) ............................ 6-70
Inverter Protection ...................................................................................... 6-71
Performing Overheating Protection on Mounted Braking Resistors............................. 6-71
Reducing Inverter Overheating Pre-Alarm Warning Levels ......................................... 6-72
Input Terminal Functions ............................................................................ 6-73
Temporarily Switching Operation between Digital Operator
and Control Circuit Terminals ....................................................................................... 6-73
Blocking Inverter Outputs (Baseblock Commands)...................................................... 6-74
Stopping Acceleration and Deceleration (Acceleration/Deceleration Ramp Hold) ....... 6-75
Raising and Lowering Frequency References Using Contact Signals (UP/DOWN) .... 6-76
Accelerating and Decelerating Constant Frequencies in the Analog References
(+/- Speed) ................................................................................................................... 6-79
Hold Analog Frequency Using User-set Timing ........................................................... 6-80
Switching Operations between a Communications Option Board and Control Circuit
Terminals ...................................................................................................................... 6-80
Jog Frequency Operation without Forward and Reverse Commands (FJOG/RJOG) . 6-81
Stopping the Inverter by Notifying Programming Device Errors to the Inverter
(External Fault Function) .............................................................................................. 6-82
Output Terminal Functions ......................................................................... 6-83

xiii
Monitor Constants.......................................................................................6-85
Using the Analog Monitor Constants ............................................................................ 6-85
Using Pulse Train Monitor Contents .............................................................................6-87
Individual Functions....................................................................................6-89
Using MEMOBUS Communications .............................................................................6-89
Using the Timer Function............................................................................................6-101
Using PID Control .......................................................................................................6-102
Energy-saving.............................................................................................................6-111
Setting Motor Constants .............................................................................................6-113
Setting the V/f Pattern.................................................................................................6-116
Torque Control............................................................................................................6-123
Speed Control (ASR) Structure...................................................................................6-131
Increasing the Speed Reference Response (Feed Forward Control).........................6-137
Droop Control Function...............................................................................................6-138
Zero-servo Function....................................................................................................6-140
Digital Operator Functions ........................................................................6-143
Setting Digital Operator Functions..............................................................................6-143
Copying Constants .....................................................................................................6-146
Prohibiting Writing Constants from the Digital Operator .............................................6-150
Setting a Password.....................................................................................................6-151
Displaying User-set Constants Only ...........................................................................6-152
Options .....................................................................................................6-153
Performing Speed Control with PG.............................................................................6-153
Using Digital Output Boards .......................................................................................6-157
Using an Analog Reference Board .............................................................................6-159
Using a Digital Reference Board ................................................................................6-160
Using Inverters for Elevating Machines ....................................................6-165
Brake ON/OFF Sequence...........................................................................................6-165
Stall Prevention during Deceleration...........................................................................6-167
Autotuning...................................................................................................................6-167
Braking Resistor Overheating Protection....................................................................6-167
Momentary Power Loss Restart .................................................................................6-167
Torque Limit ................................................................................................................6-167
I/O Open-phase Protection and Overtorque Detection...............................................6-168
External Baseblock Signal ..........................................................................................6-168
Acceleration/Deceleration Time.................................................................................. 6-168
Magnetic Contactor on the Inverter’s Output-side ......................................................6-168
Control-related Adjustments .......................................................................................6-169
Reducing Shock during Elevating Machine Start, Stop, Acceleration,
and Deceleration.........................................................................................................6-171
Confirming Startup Current and Reducing Carrier Frequency....................................6-174
Overvoltage Inhibit Function .......................................................................................6-174

xiv
7 Troubleshooting ......................................................................7-1
Protective and Diagnostic Functions ............................................................ 7-2
Fault Detection ............................................................................................................... 7-2
Alarm Detection............................................................................................................ 7-11
Operation Errors ........................................................................................................... 7-15
Errors During Autotuning............................................................................................. 7-17
Errors when Using the Digital Operator Copy Function................................................ 7-18
Troubleshooting.......................................................................................... 7-19
If Constant Constants Cannot Be Set........................................................................... 7-19
If the Motor Does Not Operate ..................................................................................... 7-20
If the Direction of the Motor Rotation is Reversed........................................................ 7-22
If the Motor Does Not Put Out Torque or If Acceleration is Slow.................................. 7-22
If the Motor Operates Higher Than the Reference ....................................................... 7-22
If the Slip Compensation Function Has Low Speed Precision ..................................... 7-23
If There is Low Speed Control Accuracy at High-speed Rotation
in Open-loop Vector Control Method ............................................................................ 7-23
If Motor Deceleration is Slow........................................................................................ 7-23
If the Motor Overheats.................................................................................................. 7-24
If There is Noise When the Inverter is Started or From an AM Radio .......................... 7-25
If the Ground Fault Interrupter Operates When the Inverter is Run ............................. 7-25
If There is Mechanical Oscillation................................................................................. 7-25
If the Torque Generated for the Motor is Insufficient (Insufficient Power)..................... 7-27
If the Torque Reference (U1-09) at Low Speeds in Open-loop Vector 2 Control
is Large Compared to That at Medium and High Speeds ............................................ 7-27
If Shock Occurs Near the Speed Estimator Switching Frequency
in Open-loop Vector 2 Control (PRG: 102only) ........................................................ 7-27
If Torque Ripple Occurs at Very Low Speeds in Open-loop Vector 2 Control
(PRG: 102only) ........................................................................................................ 7-28
If the Motor Rotates Even When Inverter Output is Stopped ....................................... 7-28
If OV is Detected When the Fan is Started, or Fan Stalls............................................. 7-28
If Output Frequency Does Not Rise to Frequency Reference...................................... 7-28
8 Maintenance and Inspection ..................................................8-1
Maintenance and Inspection ........................................................................ 8-2
Outline of Warranty......................................................................................................... 8-2
Daily Inspection .............................................................................................................. 8-2
Periodic Inspection ......................................................................................................... 8-2
Periodic Maintenance of Parts ....................................................................................... 8-3
Procedure for Adjusting Constants after Replacement of Control Board ....................... 8-3
Types and Number of Cooling Fans Used in the Drive .................................................. 8-5
Cooling Fan Replacement Outline ................................................................................. 8-6
Circulation Fan Replacement Outline........................................................................... 8-13
Removing and Mounting the Control Circuit Terminal Board ....................................... 8-16

xv
9 Specifications ......................................................................... 9-1
Standard Inverter Specifications ...................................................................9-2
Specifications by Model ..................................................................................................9-2
Common Specifications ..................................................................................................9-4
Specifications of Options and Peripheral Devices ........................................9-6
10 Appendix ............................................................................... 10-1
Varispeed G7 Control Methods ..................................................................10-2
Control Methods and Features .....................................................................................10-2
Control Methods and Applications ................................................................................10-4
Inverter Application Precautions.................................................................10-6
Selection .......................................................................................................................10-6
Installation..................................................................................................................... 10-7
Settings.........................................................................................................................10-7
Handling........................................................................................................................10-8
Motor Application Precautions....................................................................10-9
Using the Inverter for an Existing Standard Motor ........................................................ 10-9
Using the Inverter for Special Motors..........................................................................10-10
Power Transmission Mechanism (Speed Reducers, Belts, and Chains)....................10-10
Wiring Examples....................................................................................... 10-11
Using a Braking Resistor Unit..................................................................................... 10-11
Using a Braking Unit and Braking Resistor Unit .........................................................10-12
Using Braking Units in Parallel ...................................................................................10-13
Using a Braking Unit and Three Braking Resistor Units in Parallel ............................10-14
Using a VS Operator...................................................................................................10-15
Using Transistors for Input Signals and a 0-V Common in Sinking Mode
with an Internal Power Supply ....................................................................................10-16
Using Transistors for Input Signals and a +24-V Common in Sourcing Mode............10-17
Using Transistors for Input Signals and a 0-V Common in Sinking Mode
with an External Power Supply ...................................................................................10-18
Using Contact and Open Collector Outputs................................................................10-19
User Constants .........................................................................................10-20

Handling Inverters
This chapter describes the checks required upon receiving or installing an Inverter.
Varispeed G7 Introduction ...........................................1-2
Confirmations upon Delivery........................................1-3
Exterior and Mounting Dimensions..............................1-7
Checking and Controlling the Installation Site ...........1-10
Installation Orientation and Space ............................. 1-11
Removing and Attaching the Terminal Cover ............1-12
Removing/Attaching the Digital Operator and Front
Cover .........................................................................1-13
Removing and Attaching the Protection Cover..........1-17

1-2
Varispeed G7 Introduction
Varispeed G7 Models
The Varispeed-G7 Series of Inverters included two Inverters in two voltage classes: 200 V and 400 V. Maximum
motor capacities vary from 0.4 to 300 kW (41 models).
Table 1.1 Varispeed G7 Models
Voltage
Class
Maximum
Motor
Capacity
kW
Varispeed G7 Specifications
(Always specify through the protective structure when ordering.)
Output
Capacity
kVA
Basic Model Number
Open Chassis
(IEC IP00)
CIMR-G7
Enclosed Wall-mounted
[IEC IP20, NEMA 1 (Type 1)]
CIMR-G7A
200 V Class
0.4 1.2 CIMR-G7A20P4
Remove the top and bottom cov-
ers from the Enclosed Wall-
mounted model.
20P41
0.75 2.3 CIMR-G7A20P7 20P71
1.5 3.0 CIMR-G7A21P5 21P51
2.2 4.6 CIMR-G7A22P2 22P21
3.7 6.9 CIMR-G7A23P7 23P71
5.5 10 CIMR-G7A25P5 25P51
7.5 13 CIMR-G7A27P5 27P51
11 19 CIMR-G7A2011 2011
15 25 CIMR-G7A2015 20151
18.5 30 CIMR-G7A2018 2018020181
22 37 CIMR-G7A2022 2022020221
30 50 CIMR-G7A2030 2030020301
37 61 CIMR-G7A2037 2037020371
45 70 CIMR-G7A2045 2045020451
55 85 CIMR-G7A2055 2055020551
75 110 CIMR-G7A2075 2075020751
90 140 CIMR-G7A2090 20900-
110 160 CIMR-G7A2110 21100-
400 V Class
0.4 1.4 CIMR-G7A40P4
Remove the top and bottom cov-
ers from the Enclosed Wall-
mount model.
40P41
0.75 2.6 CIMR-G7A40P7 40P71
1.5 3.7 CIMR-G7A41P5 41P51
2.2 4.7 CIMR-G7A42P2 42P21
3.7 6.9 CIMR-G7A43P7 43P71
5.5 11 CIMR-G7A45P5 45P51
7.5 16 CIMR-G7A47P5 47P51
11 21 CIMR-G7A4011 40111
15 26 CIMR-G7A4015 40151
18.5 32 CIMR-G7A4018 4018040181
22 40 CIMR-G7A4022 4022040221
30 50 CIMR-G7A4030 4030040301
37 61 CIMR-G7A4037 4037040371
45 74 CIMR-G7A4045 4045040451
55 98 CIMR-G7A4055 4055040551
75 130 CIMR-G7A4075 4075040751
90 150 CIMR-G7A4090 4090040901
110 180 CIMR-G7A4110 4110041101
132 210 CIMR-G7A4132 4132041321
160 250 CIMR-G7A4160 4160041601
185 280 CIMR-G7A4185 41850-
220 340 CIMR-G7A4220 42200-
300 460 CIMR-G7A4300 43000-

Confirmations upon Delivery
1-3
Confirmations upon Delivery
Checks
Check the following items as soon as the Inverter is delivered.
If you find any irregularities in the above items, contact the agency from which you purchased the Inverter or
your Yaskawa representative immediately.
Nameplate Information
There is a nameplate attached to the side of each Inverter. The nameplate shows the model number, specifica-
tions, lot number, serial number, and other information on the Inverter.
Example Nameplate
The following nameplate is an example for a standard domestic (Japan) Inverter: 3-phase, 200 VAC, 0.4 kW,
IEC IP20 and NEMA 1 (Type 1) standards
Fig 1.1 Nameplate
Table 1.2 Checks
Item Method
Has the correct model of Inverter been
delivered? Check the model number on the nameplate on the side of the Inverter.
Is the Inverter damaged in any way? Inspect the entire exterior of the Inverter to see if there are any scratches or
other damage resulting from shipping.
Are any screws or other components
loose? Use a screwdriver or other tools to check for tightness.
Inverter model
Input specifications
Output
specifications
Lot number
Serial number
Input specifications
Inverter
specifications
Mass
G
1020 Version of software
UL FILE NO.: E131457 UL file number

1-4
Inverter Model Numbers
The model number of the Inverter on the nameplate indicates the specification, voltage class, and maximum
motor capacity of the Inverter in alphanumeric codes.
Fig 1.2 Inverter Model Numbers
Inverter Specifications
The Inverter specifications (“SPEC”) on the nameplate indicate the voltage class, maximum motor capacity,
the protective structure, and the revision of the Inverter in alphanumeric codes.
Fig 1.3 Inverter Specifications
TERMS
Open Chassis Type (IEC IP00)
Protected so that parts of the human body cannot reach electrically charged parts from the front when the
Inverter is mounted in a control panel.
Enclosed Wall-mounted Type [IEC IP20, NEMA 1 (Type 1)]
The Inverter is structured so that the Inverter is shielded from the exterior, and can thus be mounted to the
interior wall of a standard building (not necessarily enclosed in a control panel). The protective structure con-
forms to the standards of NEMA 1 (Type 1) in the USA. The protective covers (see Fig. 1.4) are required for
an IEC IP20 or NEMA 1 (Type 1) protective structure.
CIMR - G7 A 2 0P4
Inverter
Varispeed G7
No.
AStandard domestic model
Specification
No.
2
4
AC input, 3-phase, 200 V
AC input, 3-phase, 400 V
Voltage Class
No.
0P4
0P7
300
0.4 kW
0.75 kW
300 kW
Max. Motor Capacity
"P" indicates the decimal point.
*
to to
2 0P4 1
No.
0
1
Open chassis (IEC IP00)
Enclosed wall-mounted [IEC IP20,
NEMA 1 (Type 1)]
Protective Structure
No.
2
4
AC input, 3-phase, 200 V
AC input, 3-phase, 400 V
Voltage Class
No.
0P4
0P7
300
0.4 kW
0.75 kW
300 kW
Max. Motor Capacity
to
"P" indicates the decimal point.
*
to