Inovance SV670N Series User manual

‑1‑
Preface
Preface
Introduction
Thank you for purchasing the SV670N series servo drive developed by Inovance.
The SV670N series servo drive is a high‑end servo drive designed based on global‑
leading standards and high‑end application needs. It is featured with high speed, high
precision, high performance, and tuning‑free Function.
The servo drive covers a power range from 0.05 kW to 7.5 kW and carries EtherCAT
communication interfaces to work with the host controller for a networked operation
of multiple servo drives. The drive comes with the ITune function which supports
adaptive stiffness level setting, inertia auto‑tuning, and vibration suppression for easy
use. The servo drive, together with an MS1 series high‑response servo motor (with
ultra‑low, low or medium inertia) equipped with a 23‑bit single‑turn/multi‑turn
absolute encoder, serve to deliver a quiet and stable operation and accurate process
control through the fully closed‑loop function and internal process segment function.
The drive also offers dynamic braking, and STO (option) and built‑in brake output (no
external relay is needed) (option). The drive aims to achieve quick and accurate
position control, speed control, and torque control through high‑performance
solutions for automation equipment in such industries as electronic manufacturing,
lithium batteries, manipulators, packaging, and machine tools.
This guide Introduces faults and fault levels, the troubleshooting process, warning
codes and fault codes.
More Documents
Name Data Code Description
SV670N Series Servo Drive
Selection Guide 19011851
Provides instructions on product
selection, including the list of supporting
components, technical data on the drive
and motor, and the selection guide of
cables.
SV670N Series Servo Drive
installation Guide 19011862
Presents installation of the servo drive,
including installation steps, , mechanical
installation, and electrical installation.
SV670N Series Servo Drive
Hardware Guide 19011853
Presents electrical design guidance of the
equipment, description of terminals,
required certificates and standards and
solutions to common EMC problems.
SV670N Series Servo Drive
Commissioning Guide 19011855
Presents servo commissioning, parameter
descriptions, including the operating
panel, commissioning software,
commissioning procedure and a
parameter list.

‑2‑
Preface
Name Data Code Description
SV670N Series Servo Drive
Function Guide 19011860
Presents functions and parameters,
including function overview, basic servo
functions, adjustment and parameter list.
SV670N Series Servo Drive
Communication Guide 19011865
Presents functions and parameters of the
servo drive, including EtherCAT
communication configuration, parameter
description, and communication
application cases.
SV670N Series Servo Drive
Troubleshooting Guide 19011863
Introduces faults and fault levels, the
troubleshooting process, warning codes
and fault codes.
SV670N Series Servo Drive
Maintenance Guide 19011864 Provides instructions on maintenance
and repair of the equipment.
SV670N Series Servo Drive Safety
Guide 19011861
Presents the safety function and related
certifications and standards, wiring,
commissioning process, troubleshooting,
and functions.
SV670N Series Servo Drive
Manual Package PS00005527
Provides information on selection,
installation, commissioning, function,
troubleshooting and parameters of the
equipment.
Revision History
Date of
Revision Version Description
2022‑06 A01
●Changed E122.6 from Cat‑II fault to warning.
●Changed the remedy for EB03.2.
●Added information on faults E108.4, E120.3, E122.9 and
EB02.1.
●Updated the schematic diagram of the drive.
2022‑03 A00 First release.
Document Acquisition
This manual is not delivered with the product. You can obtain the PDF version by
visiting:
●
http://www.inovance.com
.
●Scan the QR code on the equipment to acquire more.

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Preface.............................................................................. 1
General Safety Instructions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
1 Fault Level and Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
2 Fault Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
3 Description of Warning Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
4 Description of Fault Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
4.1 Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
4.2 Internal Faults . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94
5 List of Warning Codes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95
6 List of Fault Codes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97
Table of Contents

‑4‑
General Safety Instructions
General Safety Instructions
Safety Precautions
●This section explains the safety precautions that need to be observed to use this
product correctly. Before using this product, please read the instruction manual
and correctly understand the relevant information of safety precautions. Failure to
comply with the safety precautions may result in death, serious injury, or
equipment damage.
●"CAUTION", "WARNING", and "DANGER" items in the guide only indicate some of
the precautions that need to be followed; they just supplement the safety
precautions.
●Use this equipment according to the designated environment requirements.
Damage caused by improper use is not covered by warranty.
●Inovance shall take no responsibility for any personal injuries or property damage
caused by improper use.
Safety Levels and Definitions
Indicates that failure to comply with the notice will result in death
or severe personal injuries.
Indicates that failure to comply with the notice may result in death
or severe personal injuries.
Indicates that failure to comply with the notice may result in minor
or moderate personal injuries or equipment damage.
General Safety Instructions
●Drawings in the selection guide are sometimes shown without covers or protective
guards. Remember to install the covers or protective guards as specified first, and
then perform operations in accordance with the instructions. Install the covers or
protective guards as specified, and use the equipment in accordance with the
instructions described in the user guide.
●The drawings in the guide are shown for illustration only and may be different
from the product you purchased.

‑5‑
General Safety Instructions
Unpacking
●Do not install the equipment if you find damage, rust, or signs of use on the equipment
or accessories upon unpacking.
●Do not install the equipment if you find water seepage or missing or damaged
components upon unpacking.
●Do not install the equipment if you find the packing list does not conform to the
equipment you received.
●Check whether the packing is intact and whether there is damage, water seepage,
dampness, and deformation before unpacking.
●Unpack the package by following the unpacking sequence. Do not strike the package
violently.
●Check whether there is damage, rust, or injuries on the surface of the equipment and
equipment accessories before unpacking.
●Check whether the package contents are consistent with the packing list before
unpacking.
Storage and Transportation
●Large‑scale or heavy equipment must be transported by qualified professionals using
specialized hoisting equipment. Failure to comply may result in personal injuries or
equipment damage.
●Before hoisting the equipment, ensure the equipment components such as the front
cover and terminal blocks are secured firmly with screws. Loosely‑connected
components may fall off and result in personal injuries or equipment damage.
●Never stand or stay below the equipment when the equipment is being hoisted by the
hoisting equipment.
●When hoisting the equipment with a steel rope, ensure the equipment is hoisted at a
constant speed without suffering from vibration or shock. Do not turn the equipment
over or let the equipment stay hanging in the air. Failure to comply may result in
personal injuries or equipment damage.

‑6‑
General Safety Instructions
●Handle the equipment with care during transportation and mind your steps to prevent
personal injuries or equipment damage.
●When carrying the equipment with bare hands, hold the equipment casing firmly with
care to prevent parts from falling. Failure to comply may result in personal injuries.
●Store and transport the equipment based on the storage and transportation
requirements. Failure to comply will result in equipment damage.
●Avoid storing or transporting the equipment in environments with water splash, rain,
direct sunlight, strong electric field, strong magnetic field, and strong vibration.
●Avoid storing the equipment for more than three months. Long‑term storage requires
stricter protection and necessary inspections.
●Pack the equipment strictly before transportation. Use a sealed box for long‑distance
transportation.
●Never transport the equipment with other equipment or materials that may harm or
have negative impacts on this equipment.
Installation
●The equipment can be operated by well‑trained and qualified professionals only. Non‑
professionals are not allowed.
●Read through the guide and safety instructions before installation.
●Do not install this equipment in places with strong electric or magnetic fields.
●Before installation, check that the mechanical strength of the installation site can bear
the weight of the equipment. Failure to comply will result in mechanical hazards.
●Do not wear loose clothes or accessories during installation. Failure to comply may
result in an electric shock.
●When installing the equipment in a closed environment (such as a cabinet or casing),
use a cooling device (such as a fan or air conditioner) to cool the environment down to
the required temperature. Failure to comply may result in equipment over‑temperature
or a fire.
●Do not retrofit the equipment.
●Do not fiddle with the bolts used to fix equipment components or the bolts marked in
red.
●When the equipment is installed in a cabinet or final assembly, a fireproof enclosure
providing both electrical and mechanical protections must be provided. The IP rating
must meet IEC standards and local laws and regulations.
●Before installing devices with strong electromagnetic interference, such as a
transformer, install a shielding device for the equipment to prevent malfunction.
●Install the equipment onto an incombustible object such as a metal. Keep the
equipment away from combustible objects. Failure to comply will result in a fire.

‑7‑
General Safety Instructions
●Cover the top of the equipment with a piece of cloth or paper during installation. This is
to prevent unwanted objects such as metal chippings, oil, and water from falling into the
equipment and causing faults. After installation, remove the cloth or paper on the top of
the equipment to prevent over‑temperature caused by poor ventilation due to blocked
ventilation holes.
●Resonance may occur when the equipment operating at a constant speed executes
variable speed operations. In this case, install the vibration‑proof rubber under the
motor frame or use the vibration suppression function to reduce resonance.
Wiring
●Equipment installation, wiring, maintenance, inspection, or parts replacement must be
performed only by professionals.
●Before wiring, cut off power connections with all equipment. Residual voltage exists
after power cut‑off. Therefore, wait at least the time designated on the equipment
warning label before further operations. Measure the DC voltage of the main circuit and
make sure it is below the safe voltage, otherwise there will be the danger of electric
shock.
●Do not perform wiring, remove the equipment cover, or touch the circuit board with
power ON. Failure to comply will result in an electric shock.
●Check that the equipment is grounded properly. Failure to comply will result in an
electric shock.
●Do not connect the input power supply to the output end of the equipment. Failure to
comply will result in equipment damage or even a fire.
●When connecting a drive to the motor, check that the phase sequences of the drive and
motor terminals are consistent to prevent reverse motor rotation.
●Cables used for wiring must meet cross sectional area and shielding requirements. The
shield of the cable must be reliably grounded at one end.
●Fix the terminal screws with the tightening torque specified in the user guide. Improper
tightening torque may overheat or damage the connecting part, resulting in a fire.
●After wiring is done, check that all cables are connected properly and no screws,
washers or exposed cables are left inside the equipment. Failure to comply may result in
an electric shock or equipment damage.
●During wiring, follow the proper electrostatic discharge (ESD) procedure, and wear an
antistatic wrist strap. Failure to comply will damage the equipment or the internal
circuits of the equipment.
●Use shielded twisted pairs for the control circuit. Connect the shield to the grounding
terminal of the equipment for grounding purpose. Failure to comply will result in
equipment malfunction.
Power-on

‑8‑
General Safety Instructions
●Before power‑on, check that the equipment is installed properly with reliable wiring and
the motor can be restarted.
●Check that the power supply meets equipment requirements before power‑on to
prevent equipment damage or a fire.
●After power‑on, do not open the cabinet door or protective cover of the equipment,
touch any terminal, or disassemble any unit or component of the equipment. Failure to
comply will result in an electric shock.
●Perform a trial run after wiring and parameter setting to ensure the equipment operates
safely. Failure to comply may result in personal injuries or equipment damage.
●Before power‑on, make sure that the rated voltage of the equipment is consistent with
that of the power supply. Failure to comply may resulting in a fire. Failure to comply
may result in a fire.
●Before power‑on, check that no one is near the equipment, motor, or machine. Failure
to comply may result in death or personal injuries.
Operation
●The equipment must be operated only by professionals. Failure to comply will result in
death or personal injuries.
●Do not touch any connecting terminals or disassemble any unit or component of the
equipment during operation. Failure to comply will result in an electric shock.
●Do not touch the equipment casing, fan, or resistor with bare hands to feel the
temperature. Failure to comply may result in personal injuries.
●Prevent metal or other objects from falling into the equipment during operation. Failure
to comply may result in a fire or equipment damage.
Maintenance
●Equipment installation, wiring, maintenance, inspection, or parts replacement must be
performed only by professionals.
●Do not maintain the equipment with power ON. Failure to comply will result in an
electric shock.
●Before maintenance, cut off all the power supplies of the equipment and wait for at least
the time designated on the equipment warning label.
●In case of a permanent magnet motor, do not touch the motor terminals immediately
after power‑off because the motor terminals will generate induced voltage during
rotation even after the equipment power supply is off. Failure to comply will result in an
electric shock.

‑9‑
General Safety Instructions
●Perform routine and periodic inspection and maintenance on the equipment according
to maintenance requirements and keep a maintenance record.
Repair
●Equipment installation, wiring, maintenance, inspection, or parts replacement must be
performed only by professionals.
●Do not repair the equipment with power ON. Failure to comply will result in an electric
shock.
●Before inspection and repair, cut off all the power supplies of the equipment and wait
for at least the time designated on the equipment warning label.
●Submit the repair request according to the warranty agreement.
●When the fuse is blown or the circuit breaker or earth leakage current breaker (ELCB)
trips, wait for at least the time designated on the equipment warning label before
power‑on or further operations. Failure to comply may result in death, personal injuries
or equipment damage.
●When the equipment is faulty or damaged, the troubleshooting and repair work must be
performed by professionals that follow the repair instructions, with repair records kept
properly.
●Replace quick‑wear parts of the equipment according to the replacement instructions.
●Do not use damaged equipment. Failure to comply may result in death, personal
injuries, or severe equipment damage.
●After the equipment is replaced, check the wiring and set parameters again.
Disposal
●Dispose of retired equipment in accordance with local regulations and standards.
Failure to comply may result in property damage, personal injuries, or even death.
●Recycle retired equipment by observing industry waste disposal standards to avoid
environmental pollution.
Additional Precautions
Cautions for the dynamic brake
●Dynamic braking can only be used for emergency stop in case of failure and
sudden power failure. Do not trigger failure or power failure frequently.
●Ensure that the dynamic braking function has an operation interval of more than 5
minutes at high speed, otherwise the internal dynamic braking circuit may be
damaged.

‑10‑
General Safety Instructions
●Dynamic braking is common in rotating mechanical structures. For example, when
a motor has stopped running, it keeps rotating due to the inertia of its load. In this
case, this motor is in the regenerative state and short‑circuit current passes
through the dynamic brake. If this situation continues, the drive, and even the
motor, may be burned.
Safety Label
For safe equipment operation and maintenance, comply with the safety labels on the
equipment. Do not damage or remove the safety labels. See the following table for
descriptions of the safety labels.
Safety Label Description
●Never fail to connect the protective earth (PE) terminal. Read
through the guide and follow the safety instructions before use.
●Never fail to connect Protective Earth (PE) terminal. Read the manual
and follow the safety instructions before use.
●Do not touch terminals within 15 minutes after disconnecting the
power supply to prevent the risk of electric shock.
●Do not touch terminals with 15 minutes after Disconnect the power.
Risk of electrical shock.
●Do not touch the heatsink with power ON to prevent the risk of burn.
●Do not touch heatsink when power is ON. Risk of burn.

Fault Level and Display
‑11‑
1 Fault Level and Display
Faults and warnings of the servo drive are divided into three levels based on severity:
No. 1 > No. 2 > No. 3, as shown below.
●No. 1 non‑resettable fault
●No. 1 resettable fault
●No. 2 resettable fault
●No. 3 resettable warning
Note
"Resettable" means the keypad stops displaying the fault/warning once a "Reset signal" is
input.
Fault and warning log
The servo drive can record the latest 20 faults and warnings and values of status
parameters upon fault/warning. Among the latest 5 faults/warnings, if a fault/warning
occurs repetitively, the servo drive records the fault/warning code and the drive
status only once.
A fault/warning will still be saved in the fault log after reset. To remove the fault/
warning from the fault log, set H02.31 to 1.
Read the value of H0b.34 to get the fault/warning code. See examples in the following
table.
H0b.34 (Hexadecimal) Description
0101 0: No. 1 non‑resettable fault
101: Fault code
2130 2: No. 1 resettable fault
130: Fault code
6121 6: No. 2 resettable fault
121: Fault code
E110 E: No. 3 resettable warning
110: Warning code

Fault Reset
‑12‑
2 Fault Reset
Faults and warnings of the servo drive are divided into three levels based on severity:
No. 1 > No. 2 > No. 3, as shown below.
●No. 1 non‑resettable fault
●No. 1 resettable fault
●No. 2 resettable fault
●No. 3 resettable warning
Note
"Resettable" means the keypad stops displaying the fault/warning once a "Reset signal" is
input.
Operating procedure:
●To stop the keypad from displaying the fault/warning, set H0d.01 (Fault reset) to 1
or activate the DI terminal assigned with DI function 2 (FunIN.2: ALM‑ RST, fault
and warning reset).
●To reset No. 1 and No. 2 faults, switch off the S‑ON signal, and then set H0d.01 to
1 or activate the DI terminal allocated with DI function 2.
●To reset No. 3 warnings, set H0d.01 to 1 or activate the DI terminal allocated with
DI function 2.
Note
●Some faults and warnings can be reset only after the fault causes are rectified by
modifying the settings. However, a reset operation does not necessarily activate
the modifications to settings.
●For modifications activated at next power‑on (R, S, T/L1C, L2C powered on again),
perform a power cycle.
●For modifications activated after stop, switch off the S‑ON signal. The servo drive
can operate normally only after modifications are activated.
☆Related function No.

Fault Reset
‑13‑
Start Process Fault Symptom Cause Confirming Method
FunIN.2 ALM‑RST Fault/Warning reset
signal
The servo drive may, depending on
the warning types, continue
running after warning reset. When
FunIN.2 is assigned to a low‑speed
DI, the effective level change of this
DI must be kept for more than 3
ms. Otherwise, fault reset will be
inactive. Do not assign FunIN.2 to a
high‑speed DI. Otherwise, fault/
warning reset will be inactive.
●Inactive: Not resetting the
fault/warning
●Active: Resetting the fault/
warning

Description of Warning Codes
‑14‑
3 Description of Warning Codes
●E108.0: Parameter write error
Cause:
Parameter values cannot be written to e2prom.
Cause Confirming Method Solution
An error occurs during
parameter‑writing.
Modify a certain parameter,
power off and on the servo
drive again and check
whether the modification is
saved.
If the modification is not
saved and the fault persists
after the servo drive is
powered off and on
repeatedly, replace the
servo drive.
●E108.1: Parameter read error
Cause:
Parameter values cannot be read from e2prom.
Cause Confirming Method Solution
The parameter‑read
operation is abnormal, and
the system indicates an
e2prom read error
Modify a certain parameter,
power off and on the servo
drive again and check
whether the modification is
saved.
If the modification is not
saved and the fault persists
after the servo drive is
powered off and on
repeatedly, replace the
servo drive.
●E108.2: Check on data written in e2prom failed
Cause:
The check on the data written in e2prom fails.
Cause Confirming Method Solution
An error occurs during
parameter‑writing.
Modify a certain parameter,
power off and on the servo
drive again and check
whether the modification is
saved.
If the modification is not
saved and the fault persists
after the servo drive is
powered off and on
repeatedly, replace the
servo drive.
●E108.3: Check on data read in e2prom failed
Cause:
The check on the data read in e2prom fails.

Description of Warning Codes
‑15‑
Cause Confirming Method Solution
An error occurs during
parameter‑reading.
Modify a certain parameter,
power off and on the servo
drive again and check
whether the modification is
saved.
If the modification is not
saved and the fault persists
after the servo drive is
powered off and on
repeatedly, replace the
servo drive.
●E108.4: Single data stored too many times
Cause:
Single data is stored too frequently.
Cause Confirming Method Solution
That may damage e2prom
over time.
1. Check H0b.90 and H0b.91.
H0b.90 shows the
parameter in question or
object dictionaries (in
hexadecimal). If H0b.91=
15, H0b.90 shows internal
variables of software.
2. Check "Func Test 1"
through the oscilloscope
channel. Be sure to
display it in hexadecimal.
This channel displays the
address that e2prom is
storing.
3. Check the storage count
through the oscilloscope
channel "Func Test 2".
1. If the alarm is caused by
manually modifying a
certain parameter or
object dictionary, there
will be no frequent
storage of a certain data
during operation, and you
can reset the fault.
2. Check the abnormal
parameter through H0b.
90 or oscilloscope
channel, and find out the
cause. For example, if the
host controller program
frequently writes
parameters through SDO,
you can modify the
program to stop it.
●E110.0: Frequency‑division pulse output setting error
Cause Confirming Method Solution
The number of frequency
divisions (quadrupled)
exceeds the motor
revolutions
Check the value of H05.17
Adjust the value of H05.17
on the basis of the motor
revolutions
●E120.3: The motor and drive do not match in the power
Cause:
the motor and drive do not match in the rated power.

Description of Warning Codes
‑16‑
Cause Confirming Method Solution
the motor and drive do not
match in the rated power.
Check rated motor voltage
and current (H00.09, H00.11)
and rated drive power
(H01.10, H01.16).
●Replace the motor or drive.
●If the motor and drive can
work properly in spite of
the mismatch, set bit4 of
H0A.71 to 1 to shield the
alarm.
●E121.0: Invalid S‑ON command
Cause:
A redundant S‑ON signal is sent when some auxiliary functions are used.
Cause Confirming Method Solution
The external S‑ON signal is
active when servo drive is
enabled internally.
Check whether the following
auxiliary functions are used:
Check whether DI functions
(H0d.02, H0d.03, and
H0d.12) are used and
whether FunIN.1 (S‑ ON
signal) is active.
Deactivate the DI assigned
with FunIN.1 (both hardware
DI and virtual DI).
●E122.0: Multi‑turn absolute encoder setting error
Cause:
The motor does not match the absolute position mode or the motor code is set
improperly.
Cause Confirming Method Solution
The motor does not match
the absolute position mode
or the motor code is set
incorrectly.
1. Check the motor
nameplate to see whether
the motor is configured
with a multi‑turn absolute
encoder.
2. Check whether H00.00
(motor code) is set
properly.
Reset H00.00 (motor code)
according to the motor
nameplate or use a suitable
motor.
●E122.6: Absolute function setting fault of the 2nd encoder
Cause:
The motor does not match the absolute mode.
Cause Confirming Method Solution
The motor does not match
the absolute mode.
Check the motor nameplate
to see whether the motor is
configured with a multi‑turn
absolute encoder.
Set H0F.02 to 0.
●E510.0: Frequency division output overspeed

Description of Warning Codes
‑17‑
Cause:
The single‑channel output pulse frequency exceeds the frequency upper limit
allowed by the hardware (4 MHz) when pulse output is used (H05.38 = 0/1/2).
Cause Confirming Method Solution
The MCU detects excessive
pulse increment fed back by
FPGA.
When H05.38 is set to 0
(encoder frequency‑division
output) or 2 (2nd encoder
frequency‑division output),
check whether the output
pulse frequency
corresponding to the motor
speed upon fault exceeds
the limit.
Output pulse frequency (Hz)
= Motor speed (rpm)/60 x
H05.17
Decrease the value of H05.17
(encoder frequency‑division
pulses) to allow the output
pulse frequency, within the
speed range required by the
machine, to drop below the
frequency upper limit
allowed by the hardware.
The input pulse frequency
exceeds 2 MHz or
interference exists in the
pulse input pins when
H05.38 is set to 1 (Reference
pulse synchronous output).
●Low‑speed pulse input
pins:open‑collector input
terminals: PULLHI, PULSE+,
PULSE‑, SIGN+, SIGN‑;
maximum pulse frequency:
200 kpps.
●High‑speed pulse input
pins: differential input
terminals: HPULSE+,
HPULSE‑, HSIGN+, HSIGN‑;
maximum pulse frequency:
8 Mpps.
Decrease the input pulse
frequency to a value within
the frequency upper limit
allowed by hardware.
Note:
In this case, if you do not
modify the electronic gear
ratio, the motor speed will
be reduced.
If the input pulse frequency
is high but is still within the
frequency upper limit
allowed by the hardware,
take anti‑interference
measures (use STP cable for
pulse input and set pin filter
parameter H0A.24 or
H0A.30). This is to prevent
false warnings caused by
interference pulses
superimposed to actual
pulse references.
●E600.0: Inertia auto‑tuning failure
Cause:
Vibration cannot be suppressed. You can set notch parameters (H09.12...H09.23)
manually to suppress vibration.
The auto‑tuned values fluctuate dramatically. Increase the maximum operating
speed, reduce the acceleration/deceleration time, and shorten the stroke of the
lead screw during ETune operation.

Description of Warning Codes
‑18‑
Mechanical couplings of the load are loose or eccentric. Rectify the mechanical
faults.
A warning occurs during auto‑tuning and causes interruption. Rectify the fault
causes and perform inertia auto‑tuning again.
The vibration cannot be suppressed if the load carries a large inertia. In this case,
increase the acceleration/deceleration time first to ensure the motor current is
unsaturated.
Cause Confirming Method Solution
1. Continuous vibration
occurs during auto‑
tuning.
2. The auto‑tuned values
fluctuate dramatically.
3. Mechanical couplings of
the load are loose or
eccentric.
4. A warning occurs during
auto‑tuning and causes
interruption.
5. The vibration cannot be
suppressed if the load
carries a large inertia. In
this case, increase the
acceleration/deceleration
time first to ensure the
motor current is
unsaturated.
Perform internal inspection
to check whether the torque
jitters upon stop (not FFT).
Check whether Three times
more than the last auto‑
tuned value for variation
less than 5 times; 0.5 times
more than last auto‑tuned
value for variation above 5
times.
1. Rectify the fault and
perform inertia auto‑
tuning again.
2. For vibration that cannot
be suppressed, enable
vibration suppression.
3. Ensure mechanical
couplings are connected
securely.
4. Increase the maximum
operating speed, reduce
the acceleration/
deceleration time, and
shorten the stroke of the
lead screw during ETune
operation.
●E601.0: Homing warning
Cause:

Description of Warning Codes
‑19‑
Cause Confirming Method Solution
1. The home switch is faulty.
There is only high‑speed
searching but no low‑speed
searching during homing.
After high‑speed searching,
low‑speed searching in the
reverse direction applies.
If a hardware DI is used,
check whether the
corresponding DI function is
allocated to a certain DI in
group 2003h and check the
wiring of this DI. Change the
DI logic manually and
observe the value of H0B.03
(monitored DI status) to
monitor whether the
servoServo drive receives
corresponding DI level
changes. If the home signal
is Z signal and the home
signal cannot be found,
check the condition of the Z
signal.
2. The time limit for homing
is too short.
Check whether the value of
H05.35h (time limit for
homing) is too small
Increase the value of H05.35.
3. The speed in high‑speed
searching for the home
switch signal is too low.
Check the distance between
the start position of homing
and the home switch. Then
check whether the setpoint
of 6099.01h is too low,
resulting in a long homing
process.
Increase the value of
6099.01h.
●E601.1: Homing switch error
Cause:
The homing switch is set improperly.
Cause Confirming Method Solution
The home switch is set
improperly.
Check whether the limit
signals at both sides are
activated.
Check whether the limit
signal and the deceleration
point signal/home signal are
both activated.
Check whether the positive
and negative position limits
are activated successively.
Set the position of the
physical switch properly.
●E601.2: Homing method setting error
Cause:
The homing method value is too large.