Hitachi SJ-FB User manual

FOR HITACHI INVERTER
SJ-FB (Feed-Back Board)
HITACH
I
NB616X
Thank you for purchasing the SJ-FB (HITACHI FEED-BACK BOARD). This manual
explains the operation of the feed-back board for use with Hitachi SJ300 series inverters.
Please read this manual thoroughly, along with the SJ300 Inverter Instruction Manual, for
proper installation, setup, and maintenance. Keep this manual for future reference.
INSTRUCTION MANUAL
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SAFETY
To get best performance with SJ-FB (Feedback Board), read this manual and all of the warning sign attached to
the inverter carefully before installation and operation, and follow the instructions exactly. Keep this manual
handy for your quick reference.
Definitions and Symbols
A safety instruction (message) is given with a hazard alert symbol and a signal word;
WARNING or CAUTION. Each signal word has the following meaning throughout this manual.
This symbol means hazardous high voltage. It used to call your attention to
items or operations that could be dangerous to your and/or other persons
operating this equipment.
Read these messages and follow these instructions carefully.
This is the "Safety Alert Symbol. " This symbol is used to call your attention to
items or operations that could be dangerous to your and/or other persons
operating this equipment. Read the messages and follow these instructions
carefully.
WARNING WARNING
Indicates a potentially hazardous situation which, if not avoided, can result in
serious injury or death.
CAUTION CAUTION
Indicates a potentially hazardous situation which, if not avoided, can result in
minor to moderate injury, or serious damage of product.
The matters described under may, if not avoided, lead to serious
results depending on the situation. Important matters are described
in CAUTION ( as well as WARNING ), so be sure to observe them.
NOTE NOTE
Notes indicate an area or subject of special merit, emphasizing either the
product's capabilities or common errors in operation or maintenance.
HAZARDOUS HIGH VOLTAGE
Motor control equipment and electronic controllers are connected to hazardous line voltages. When
servicing drives and electronic controllers, there might be exposed components with cases or
protrusions at or above line potential. Extreme care should be taken to product against shock.
Stand on an insulating pad and make it a habit to use only one hand when checking components.
Always work with another person in case an emergency occurs. Disconnect power before checking
controllers or performing maintenance. Be sure equipment is properly grounded. Wear safety glasses
whenever working on electronic controllers or rotating electrical equipment.
CAUTION
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Revision History Table
No. Revision Contents The Date
of Issue
Operation
Manual No.
1 Initial Release of Manual NB616X Feb.2000 NB616X
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Only qualified personnel shall carry out wiring work.
Otherwise, there is a danger of electric shock and/or fire.
Implement wiring after checking that the power supply is off.
Otherwise, there is a danger of electric shock and/or injury.
Be sure not to touch the inside and terminal of the option board while the inverter is energized.
Otherwise, there is a danger of electric shock and/or injury.
Be sure not to remove the encoder line and feedback board during the operation.
Otherwise, there is a danger of electric shock and/or fire.
After a lapse of more than 10 minutes after turning off the input power supply, perform the maintenance and
inspection.
Otherwise, there is a danger of electric shock
Make sure that only qualified persons will perform maintenance, inspection and part replacement.
(Before starting the work, remove metallic objects from your person. Be sure to use tools protected
with insulation)
Otherwise, there is a danger of electric shock and/or injury.
Never modify the unit.
Otherwise, there is a danger of electric shock and/or injury.
Be sure to implement wiring after installing the body.
Otherwise, there is a danger of electric shock and/or injury.
WARNING
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Do not allow substance such as cutting waste, sputtering of welding, waste of iron, wire and dust etc. to come
into contact with the unit.
There is a fire risk.
Inverter main body and option board must be fixed tightly with the screw of the belonging.
There is a fear of contact defectiveness.
Tighten the screws of the encoder line on the option board so that there is no loose connection.
There is the fear of contact defectiveness.
Confirm that the power supply of the encoder is the same as the one in the option card (DC5V).
Otherwise, there is the danger of injury and/or fire.
Make sure that the direction of the motor is correct.
There is a danger of injury or machine damage.
Make sure there is no abnormal noise and vibration.
There is a danger of injury or machine damage
CAUTION
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CONTENTS
Contents PAGE
Chapter 1 GENERAL DESCRIPTIONS 7
1.1 Inspection upon unpacking 7
1.2 Inquiry and Warranty of the Unit 7
1.2.1 Request upon inquiry 7
1.2.2 Warranty of the unit 7
Chapter 2 OUTLINE OF SJ-FB 8
Chapter 3 INSTALLATION 9
Chapter 4 WIRING AND CONNECTION 10
4.1 Terminal assignment of the Option Board 10
4.2 Function Explanation of the Terminal 11
4.3 Terminal connection diagram 12
Chapter 5 SETTING 14
5.1 Position of the setting switch 14
5.2 Feed-back board initial setting 14
5.3 Items regarding the feed back board of the inverter main body 15
5.4 Setting flowchart of the switch on the board 18
Chapter 6 OPERATION 19
Chapter 7 FUNCTIONS 21
7.1 Orientation function 21
7.1.1 Function outline 21
7.1.2 Data setting 23
7.2 Speed control (ASR) 24
7.3 Position control (APR) (Electronic gear function) 24
7.3.1 Function outline 24
7.3.2 Control mode setting 24
7.3.3 Data setting 25
7.3.4 Pulse train mode selection 28
7.4 Speed control (P/PI) switching function 29
7.5 Compensationofsecondaryresistorfunction30
Chapter 8 PROTECTION FUNCTION 31
8.1 Action selection in case of option error 31
8.2 Cause and countermeasure of the option error 31
8.3 Warning display 31
Chapter 9 SPECIFICATION 32
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7
Chapter 1 GENERAL DESCRIPTIONS
1.1 Inspection upon packing
Handle with care, not to give impact and vibration in case of unpacking. Please check the contents
of the package for quantity and damage occurred during transportation.
(Packing contents)
1. SJ-FB (Feed back board) : 1
2. Instruction manual  : 1
3. Board bind screws (M3×8mm) : 2
Please contact where you bought the unit as soon as possible when there is any problem.
1.2 Inquiry and Warranty of the Unit
1.2.1 Request upon inquiry
If you have any questions regarding damage of the unit, unknown parts or for general
inquiries please contact your supplier or the local Hitachi Distributor with the following
information.
(1) Inverter Model
(2) Production Number (MFG, NO)
(3) Date of Purchase
(4) Reason for Calling
Damaged part and its condition etc.
Unknown parts and their contents etc.
1.2.2 Warranty of the unit
The warranty period of the unit is shown below.
1 year after normal installation.
However within the warranty period, the warranty will be void if the fault is due to;
(1) Incorrect use as directed in this manual, or attempted repair by unauthorized personnel.
(2) Any damage sustained, other than from transportation (which should be reported
immediately).
(3) Using the unit beyond the limits of the specification.
(4) Act of God (Natural Disasters: Earthquakes, Lightning, etc)
The warranty is for the inverter only, any damage caused to third party equipment by malfunction
of the inverter is not covered by the warranty.
Any examination or repair after the warranty period (one year) is not covered. And within the
warranty period any repair and examination which results in information showing the fault was
caused by any of the items mentioned above,. the repair and examination cost are not covered. If
you have any questions regarding the warranty please contact either your supplier or the local
Hitachi Distributor. Please refer to the back cover for a list of the local Hitachi Distributors.
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8
Chapter 2 OUTLINE OF SJ-FB
This manual describes the application board SJ-FB for a SJ300 series inverter.
This SJ-FB board, assembled in a SJ300 inverter, detected the rotation speed of a motor with the
encoder and feedback the motor speed to suppress speed fluctuations for highly accurate operation.
This SJ-FB board can also be used for controlling motor stop positions by entering 90 phase
difference pulses, as well as for synchronized operation, orientation function, and external torque
limit input function. Figure 2-1 Function Block Diagram
NOTE: Not vector control (ACR control)
PWM M
EC
Current
control
Torque
limiter
Speed
control
Inside
setting
LAD
Turn
several
detection Position
detection
Zero speed
detection
Speed deviation
excessive signal
Position
control
Orientation
control
SJ-FB
Inverter main body
EAP,EAN
EBP,EBN
EZP,EZN
EP5,EG5
AP,AN
BP,BN
DSE ZS
POK
LAC
PCLR
ORT
SAP,SAN
SBP,SBN
TH
STAT
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9
Chapter 3 INSTALLATION
How to Mount the option Board
Please combine the hole at four corners of the option board to each guide post for option
positioning, and screw hole for the fixation of this side of the body. Then connect the option board,
in option port 1 or 2 of side of the body as shown below. Please fix 2 places of the board with the
fixation screw of the belonging, to avoid loose connection.
Figure 3-1 Option attachment figure
Option port 1
Option port 2
Guide post for the
option board positioning
Screw hole for the option board fixation
(The M3 screw)
Option board
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10
Chapter 4 WIRING AND CONNECTION
4.1 Terminal assignment of the Option Board
Figure 4-1 Terminal assignment
Outlook of SJ-FB
TM1 TM2
Dip switch SWENC Dip switch SWR
Connector for Main body
connection
EP5 EG5 EAP EAN EBP EBN EZP EZN
TM1 terminal assignment
SAP SAN SBP SBN AP AN BP BN
TM2 terminal assignment
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11
Chapter 4 WIRING AND CONNECTION
4.2 Function Explanation of the Terminal
Terminal Code Function Common
terminal electric specification
Pulse line position
command input
SAP
SAN
SBP
SBN
Pulse train input (see page 16)
•Mode 0 : 90 degree phase difference pulse
•Mode 2 : Forward pulse/Reverse pulse
•Mode 1 : Forward/Reverse signal, pulse train
ON/OFF of the terminal resistance on the option
board can be done by the dip switch.
(Built in terminal resistance 150 ohm)
Mode setting is done at the pulse mode selection
(P013)
DC5V receiver input
(based on RS-422
standard)
Encoder signal input
EAP
EAN
EBP
EBN
EZP
EZN
A, B, Z: rotary encoder signal input
Photo coupler input
(Correspondence to
the DC5V line driver
type rotary encoder)
Pulse train position
command input
permission signal
(Note 1)
STAT Position control with pulse train input is valid when STAT is Turned ON.
(Note 3)
Orientation signal:
(Note 1) ORT Turning ON for orientation operation. (Note 3)
LAD cancel signal:
(Note 1) LAC Turning ON for canceling LAD. (Note 3)
Input terminals
Position deviation
clear signal:
(Note 1) PCLR Turning ON for clearing position
deviation counter. (Note 3)
CM1
Photo coupler input
(Refer to a main body
intelligent input
terminal.)
Encoder signal
output
AP
AN
BP
BN
Outputting the Inputted encoder signal (ratio 1:1). DC5V line driver output (based on RS-
422 standard)
Power supply for
encoder EP5 EG5 DC +5V power supply EG5 150mA max
Positioning
completion signal
(Note 2) POK Used for position control or orientation.
Output when the subject comes within
the specified range (P017). (Note 3)
Speed deviation
excessive signal
(Note 2) DSE Output when the real rotation speed
deviates over from command speed
(P027). (Note 3)
Output terminals
Zero speed signal
(note 2) ZS Output when the real rotation speed
becomes zero speed detection level
(C063). (Note 3)
CM2
Open collector outputs
(Refer to a main body
intelligent input
terminal)
(Note 1): Valid when LAC is assigned to an intelligent input terminal of the main body (SJ300).
(Note 2): Valid when POK is assigned to an intelligent output terminal of the main body (SJ300).
(Note 3): Refer to the code setting method of SJ300
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12
Chapter 4 WIRING AND CONNECTION
4.3 Terminal connection diagram
Figure 4-2 Terminal wiring
(Note 1) : Please refer to the instruction manual of the inverter main body about the wiring of the
logic board.
(Note 2) : Use a twisted and shielded wire for the signal cables, and cut the shielded covering as
shown in the diagram below. Make sure that the length of the signal cable is 20 meters
or less. If the length exceeds 20 meters, please use a VX application control device
RCD-E (remote control device) or CVD-E (insulation signal) to avoid malfunction
caused by EMC noise or voltage drop. Also, electric wire for the encoder uses twist
shield line of 0.75mm2or more (the example: Hitachi Cable, Ltd. KPEV-S), and make
the distance less than 20m. In case of more than 20m, please use the relay amplifier of
the 5V line driver specification output.
Insulate
Unnecessary ground
connection
Connect to each common terminal
of the o
p
tion board
.
H
O
L
SJ-FB
(Feed-back board)
Inverter main body control terminal
Programmable to the
intelligent input terminal 1-8
EP5
EG5
EAP
EAN
EBP
EBN
EZP
EZN
M
EC
Motor with
the encoder
SAP
SAN
SBP
SBN
Pulse line position
command
POK (Positioning completion signal)
ZS (Zero speed signal)
DSE (Speed deviation excessive signal)
Output
terminal
FW
RV
LAC (LAD cancellation signal)
PCLR (Position deviation Clear signal)
ORT (Orientation signal)
CM1
Input
terminal
Programmable to the
intelligent output terminal 1-5 AP
AN
BP
BN
Encoder
signal output
STAT(Pulse train input permission signal)
Encoder signal
TM1
TM2
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13
Chapter 4 WIRING AND CONNECTION
(Note 3) : Please separate the main circuit wiring from the relay control circuit wiring. If they
have to be crossed, be sure that they must be crossed at right angle.
(Note 4) : Don’t make a short circuit between the EP5 and EG5 terminals. There is a danger of
malfunctions.
(Note 5) : Isolate common signal for analog signal of the main body (L terminal of the logic card of
SJ300) from common terminal of the SJ-FB.
(Note 6) : Please connect the encoder signal line properly so that the relationship among their phases
become as shown below during rotation of the motor(Standard EG5).
EAP
EAN
EBP
EBN
EZP
EZN
Power cables R, S, T, U, V, W, P, PD,
RB, N, R0, T0 etc.
Right angle
Input/Output signal lines
Control signal of STAT, ORT, LAC, PCLR, SAP, SAN, SBP, SBN,
EAP, EAN, EBP, EBN, POK, DSE, ZS, AP, AN, BP, BN, L, EP5,
EG5, CM1, CM2, P24, PLC etc.
Separate it 10cm or more.
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14
Chapter 5 SETTING
5.1 Position of the setting switch
Figure 5-1 Switch arrangement figure
5.2 Feed-back board initial setting
Setting
item Switch No. Contents
ON Detection of disconnected A or B signal (EAP-EAN or EBP-
EBN) is valid.
1OFF Detection of disconnected A or B signal (EAP-EAN or EBP-
EBN) is invalid.
ON Detection of disconnected Z signal (EZP-EZN) is valid.
SWENC
2OFF Detection of disconnected Z signal (EZP-EZN) is invalid.
ON Terminal resistance is provided between SAP and SAN (150
ohm).
1OFF No terminal resistance is provided between SAP and SAN.
ON Terminal resistance is provided between SBP and SBN (150
ohm).
SWR
2OFF No terminal resistance is provided between SBP and SBN.
(Note) : All the switches are set to OFF as an initial setting.
SWENC SWR
Layout of SJ-FB
1
2
O
F
F
Slide to the (OFF) marked side
of the switch to turn it off and the
opposite side to turn it on.
How to Set Switches
SWENC and SWR
[ON/OFF]
TM1 TM2
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15
Chapter 5 SETTING
5.3 Items regarding the feed back board of the inverter main body
Code Function name Setting range Initial data Setting
on run
Change
mode on
run
A044 1st control method 00(VC) / 01(VP1.7power) / 02(Free V/f Setting)
/ 03(SLV) / 04(0Hz area SLV) / 05(V2) 00 - -
H001 Auto-tuning mode
selection 00(NOR : Invalid) / 01(NRT : not rotate)/ 02(AUT : rotate) 00 - -
H002 1st motor constant
selection
00(Hitachi standard motor constant)/
01(Auto-tuning data)/
02(Auto tuning data with online auto-tuning) 00 - -
H003 1s
t
motor capacity
selection 0.20 - 75.0(kW) Setting on forwarding --
H004 1s
t
motor pole
selection 2/4/6/8 (Poles) 4 - -
H005 1s
t
motor speed
response setting 0.001 - 9.999 / 10.00 - 65.53 1.590
H006 1st stabilized factor 0. - 255. 100.
H020 1st motor R1 setting 0.000 - 9.999 / 10.00 - 65.53(Ω)depends on the motor
capacity --
H021 1st motor R2 setting 0.000 - 9.999 / 10.00 - 65.53(Ω)depends on
the motor
capacity --
H022 1st motor L setting 0.00 - 99.99 / 100.0 - 655.35(mH) depends on the motor
capacity --
H023 1st motor I0 setting 0.00 - 99.99 / 100.0 - 655.35(A) depends on the motor
capacity --
H024 1st motor J setting 0.000 - 9.999 / 10.00 - 99.99 /
100.0 - 9999.(kgm2)
depends on
the motor
capacity --
H030 1st motor R1 setting
(Auto-tuning data) 0.000 - 9.999 / 10.00 - 65.53(Ω)depends on
the motor
capacity --
H031 1st motor R2 setting
(Auto-tuning data) 0.000 - 9.999 / 10.00 - 65.53(Ω)depends on
the motor
capacity --
H032 1st motor L setting
(Auto-tuning data) 0.00 - 99.99 / 100.0 - 655.35(mH) depends on
the motor
capacity --
H033 1st motor I0setting
(Auto-tuning data) 0.00 - 99.99 / 100.0 - 655.35(A) depends on
the motor
capacity --
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16
Chapter 5 SETTING
Code Function name Setting range Initial data Setting
on run
Change
mode on
run
H034 The 1st motor J setting
(Auto-tuning data) 0.000 - 9.999 / 10.00 - 99.99 / 100.0 - 9999.( kgm2)
depends on
the motor
capacity --
H050 1st PI control proportional
gain setting 0.00 - 99.99 / 100.0 - 999.9 / 1000.(%) 100.0
H051 1st PI control integral gain
setting 0.00 - 99.99 / 100.0 - 999.9 / 1000. (%) 100.0
H052 1st P control proportional gain
setting 0.00 - 10.00 1.00
H070 PI control proportional gain
switching 0.00 - 99.99 / 100.0 - 999.9 / 1000.(%) 100.0
H071 PI control integral gain setting 0.00 - 99.99 / 100.0 - 999.9 / 1000.(%) 100.0
H072 P control proportional gain
setting 0.00 - 10.00 1.00
P001 Option 1 operation selection
on error 00(TRP) / 01(RUN) 00 -
P002 Option 2 operation selection
on error 00(TRP) / 01(RUN) 00 -
P011 Encoder pulse setting 128. - 9999. / 1000 - 6500 (10000 - 65000)(Pulse) 1024. - -
P012 Control mode selection 00(ASR Mode) / 01(APR Mode) 00 - -
P013 Pulse line input mode
selection 00(Mode 0) / 01(Mode 1) / 02(Mode 2) 00 - -
P014 Stop position setting for
orientation 0. - 4095. 0. -
P015 Frequency setting for
orientation 0.00 - 99.99 / 100.0 - 120.0(Hz) 5.00 -
P016 Direction setting for
orientation 00(Forward) / 01(Reverse) 00 - -
P017 Completion range setting for
orientation 0. – 9999. / 1000(Pulse) 5 -
P018 Completion delay time setting
for orientation 0.00 - 9.99(s)(Note3) 0.00 -
P019 Position selection for
electronic gear 00(Position feed back side)/ 01(Position command side) 00 -
P020 Numerator of ratio setting for
electronic gear 0. - 9999. 1. -
P021 Denominator of ratio setting
for electronic gear 0. - 9999. 1. -
P022 Feed forward gain setting for
position control 0.00 - 99.99 / 100.0 - 655.3 0.00 -
P023 Loop gain setting for position
control 0.00 - 99.99 / 100.0 0.50 -
P025 The 2 next resistance revision
presence selection 00(Disable) / 01(Enable) 00 -
P026 Over speed abnormal
detection level 0.00 - 99.99 / 100.0 - 150.0(%) (Note 2) (Note 3) 135.0 -
P027 Speed error over detection
level 0.00 - 99.99 / 100.0 - 120.0(Hz) (Note 2) 7.50 -
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17
Chapter 5 SETTING
(Note 1) : Please refer to the instruction manual of the inverter main body as to the setting
procedure.
(Note 2): When the over speed abnormal detection level (P026), the speed error over detection level
(P027) are set 0, the Abnormal detection data processing will be invalid.
(Note 3): Regarding the SJ-FB setting, there are some warning about what type of main body
combines with the SJ-FB which is written following list.
Main body of SJ300 Production No (MFG No) (Note 4)
No. Item
9 8 XXXXXXXXXXXX
9 9 XXXXXXXXXXXX
9 O XXXXXXXXXXXX
9 J XXXXXXXXXXXX
9 K XXXXXXXXXXXX
0 1 XXXXXXXXXXXX
others
1 Completion
delay time
setting for
orientation
(P018)
Range of setting: 0.00 - 9.99 (X10(sec))
(Example) In order to operate the completion
delay time setting for orientation for 1(sec).
Set P018 setting which is written below.
P018=1(sec)/10(sec) =0.10
Range of setting: 0.00 - 9.99 (X1(sec))
( Example) In order to operate the completion
delay time setting for orientation for 1(sec).
Set P018 setting which is written below.
P018=1(sec) / 1(sec)=1.00
2 Over speed
abnormal
detection
level
Range of setting: 0.0 - 150.0 (X100)
(Example) In order to operate the over speed
detection level at 66Hz while maximum
frequency is 60Hz. Set P026 setting which is
written below.
P026=66Hz / 60Hz=1.1
Range of setting: 0.0 - 150.0 (X1%)
(Example) In order to operate the over speed
detection level at 66Hz, while maximum
frequency is 60Hz. Set P026 setting which is
written below.
P026=66Hz / 60HzX100=110.0
(Note 4) Main body of SJ300 Production number (MFG No) is written main body of SJ300
specifications label. Refer to figure 5-2(1), figure 5-2(2) please.
Figure 5-2(1) position of specification
Figure 5-2 (2) Contents of specification label
Specifications label
Inverter model
Maximum applicable motor
Input ratings
Output ratings
Production number
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18
Chapter 5 SETTING
5.4 Setting flowchart of the switch on the board
Figure 5-3 Switch setting flowchart
START
Detect a wire break of
A, B phase signal?
Use the pulse train position
command input?
Set SWENC1
switch OFF.
Set SWR1,2
switch ON.
Detect a wire break of the
Z phase signal?
Set SWENC2
switch ON.
Set SWENC1
switch ON.
Set SWENC2
switch OFF.
Turn SWR1, 2 on only 1 unit that is
the most distant from a master
inverter in a plural motor.
END
Connect parallel motors to the pulse
train position command input?
YES
NO
NO
NO
NO
YES
YES
YES
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19
Chapter 6 OPERATION
Refer to [Chapter 3 OPERATION] in the instruction manual for the SJ300 inverter before operating
with this board. When the operation command is given from the terminal side of the inverter main
body, operate with the following procedure.
<Procedure>
1. Turn ON the POWER switch of the inverter.
2. Set the control method (A044) in [05].
3. Set the necessary items according to the instruction manual "Chapter 4 FUNCTION
EXPLANATION" of the inverter main body.
4. For speed control, operation is started when operation command of the inverter main body
is turned on.
5. For position control, turn on the STAT terminal of SJ-FB and operation command of the
inverter main body first of all. Next input the pulse train position command to SAP-SAN
and SBP-SBN. Then the motor turns only the pulse that you input.
Confirm the following while trial operation.
The motor accelerates normally.
The motor rotates in the correct direction.
Neither abnormal vibration nor noise is recognized in the motor.
If the motor doesn’t accelerate normally or the inverter trips with overload, check the encoder for
phase order.
Phase order : The normal phase order is that the waveform of phase A advances by 90°
than that of phase B when the motor rotates forward.
(Note 1) : The monitor signal may not be output from FM terminal of inverter main body under
vector control with sensor (A044=05). Please confirm the monitor output in this case.
(Note 2) : Please do not do the free run action by "RS terminal" of inverter main body. When you do
this action, over current trip, or power element destruction may occur. Please use "FRS"
the terminal when performing free run action.
(Note 3) : If the torque limit setting (b041-b044) is enlarged, over current trip would occur at the
time of the motor added burden. In this case, please adjust the torque limit setting value.
(Note 4) : The motor constant data of the SJ300 series is the data at the time of base frequency 50Hz
in the J1 motor made in Hitachi. . Please put in the value that did it to motor constant
I0 (H023) 0.7 times, in the case that you use it with base frequency 60Hz in the J1
motor.
(Note 5) : Please do the auto tuning, in the case that you do not understand the motor constant.
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20
Chapter 6 OPERATION
(Note 6) : If satisfactory performance can not be obtained, please adjust the motor constant for the
phenomena according to following table.
Status of
running Phenomena Contents of adjustment Adjusting parameter
At starting The shock is
occurred at starting Set “Motor constant J” bigger and bigger slowly until 1.2 times for preset constant. H024/H034
Set speed response smaller. H005
At
deceleration Unstable of motor rotation Set “Motor constant J” smaller for preset
Constant. H024/H034
During
torque limit
Insufficient torque
during torque limit at
low speed
Set overload restriction level lower than torque
limit level b021 b041-b044
At low
frequency
operation Irregular of rotation Set “Motor constant J” bigger for preset
constant. H024/H034
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