Nakanishi Espert 500 User manual

• If the motor lamp is already lit pressing the A [13] or B [14] button will start rotation. Please look carefully
at the CONTROLLER's front panel before pushing the motor select button.
• Motor A and B can not be run simultaneously.
N : Max. operating speed at 13mm overhang.
OPERATION MANUAL
Thank you for purchasing Espert 500. This is a high-precision, extremely high speed micromotor rotary hand tool system.
This system is designed for high-precision, small diameter deburring, grinding and a wide variety of other applications.
Keep this Operation Manual near Espert 500 system for any operators to refer to whenever operating this system.
Please read this Operation Manual carefully prior to use.
Insert the motor cord plug into the Motor Plug Connector [15] and
align the pin on the plug with the groove on the connector and
tighten the motor cord plug nut (Fig. 3).
Espert 500
1. CAUTIONS FOR HANDLING AND OPERATION
Read these cautions carefully and only use in the manner intended.
Safety instructions are intended to avoid potential hazards that could result in personal injury or damage to
the device. Safety instructions are classified as follows in accordance with the seriousness of the risk.
A hazard that could result in bodily injury or damage to the device if the safety instructions are not
followed.
A hazard that could result in light or moderate bodily injury or damage to the device if the safety
instructions are not followed.
General information needed to operate the device safely.
Class
WARNING
CAUTION
NOTICE
A. GROUNDING INSTRUCTIONS
1. In the event of a malfunction or breakdown, grounding provides a path of least resistance for electric current to reduce the risk of
electric shock. This tool is equipped with an electric cord having an equipment-grounding conductor and a grounding plug. The plug
must be plugged into a matching outlet that is properly installed and grounded in accordance with all local codes and ordinances.
2. Do not modify the plug provided - if it will not fit the outlet, have the proper outlet installed by a qualified electrician.
3. Improper connection of the equipment-grounding conductor can result in a risk of electric shock. The conductor with insulation having
an outer surface that is green with or without yellow stripes is the equipment-grounding conductor. If repair or replacement of the
electric cord or plug is necessary, do not connect the equipment-grounding conductor to a live terminal.
4. Check with a qualified electrician or service personnel if the grounding instructions are not completely understood, or if in doubt as to
whether the tool is properly grounded.
5. Use only 3-wire extension cords that have 3-prong grounding plugs and 3-pole receptacles that accept the tool's plug.
6. (120V) This tool is intended for use on a circuit that has an outlet that looks like the one illustrated in Sketch A in Figure (below).
The tool has a grounding plug that looks like the plug illustrated in Sketch A in figure (below). A temporary adapter, which looks like the
adapter illustrated in Sketches B and C, may be used to connect this plug to a 2-pole receptacle as shown in Sketch B if a properly
grounded outlet is not available. The
temporary adapter should be used
only until a properly grounded outlet
can be installed by a qualified
electrician. The green-colored rigid
ear, plug, and the like, extending
from the adapter must be connected
to a permanent ground such as a
properly grounded outlet box.
Note : Adopter (Figure B) not for use in
Canada.
7. USE PROPER EXTENSION CORD. Make
sure your extension cord is in good
condition. When using an extension cord,
be sure to use one heavy enough to carry
the current your product will draw. An
undersized cord will cause a drop in line
voltage resulting in loss of power and
overheating. Table (below) shows the
correct size to use depending on cord length
and nameplate ampere rating. If in doubt,
use the next heavier gauge. The smaller
the gauge number, the heavier the cord.
C. CAUTION
1. This system can operate in temperatures from 0°C to 40°C. If condensation forms on the unit please do not operate the system
it can short out and there is danger of electric shock.
2. This system is not approved for use in flammable or explosive environments or with flammable or explosive materials.
3. Never oil the bearings. This attachment is assembled with permanently greased bearings.
4. Please check the motor and handpiece prior to each use for vibration, abnormal noises, heat, and rough or stiff rotation. If any
of the above conditions are beyond acceptable limits, please send the system to NAKANISHI for service.
5. Never move the Chuck Control Ring to Open while the motor is running, the motor and attachment will be damaged. Only
change tool with the motor completely stopped.
6. When using large cutting tools, tools with a head diameter larger than 4mm rotate the motor and attachment at slow speed. It is
very easy to bend and break large cutting tools at high rotation speeds.
7. If the motor protection circuit repetitively activates and stops the motor, you are using too much force. Please use less hand
force and continue the operation. Heavy handed usage will result in dramatically shortened motor, attachment and tool life.
8. Please clean the collet and spindle center shaft weekly as failure to do this can cause contaminants to build up in the collet and
increase runout or reduce the clamping strength of the collet.
9. Do not disassemble, modify or attempt to repair the CONTROLLER, Motor Attachment and Foot
Pedal as it will damage internal
components. There are no user serviceable parts available.
10. Be careful not to be injured by grinder or cutting tool while working.
11. Verify type and use only properly rated fuse. Refer to the " 10. FUSE REPLACEMENT " section.
12. When cleaning an Attachment, stop the motor, Turn OFF the Main Power Switch and remove debris with a soft brush or a cloth.
Do not blow air into the Attachment with compressed air as foreign particles or cutting debris may get into the ball bearing.
13. Max. input voltage fluctuations : +/-10%
14. Pollution degree 2
15. Overvoltage category II
16. Max. Operating altitude : 2000m
17. Operating humidity range : 10 - 85% RH
18. Indoor use
19. Place equipment so that power supply cord can be quickly pulled out of inlet in case of emergency.
20. Disconnect from power before doing maintenance on handpieces.
D. NOTICE
1. Do not tighten the collet without mounting a cutting tool or dummy bur as this will result in damage to the collet and spindle.
2. Always insert the bur fully into the collet even when not in use.
3. Don't use pencils, pens or other sharp objects on the Front Panel buttons.
4. Turn OFF the power after rotation has completely stopped.
5. User is solely responsible for maintaining control of operation, maintenance and periodic inspection of the system.
6. Only use grounded power sources. Using a non-specified Power Cord, the risk of fire by over-heat of the cord is possible. In case
of damage to the CONTROLLER, return to NAKANISHI dealer service.
7. Service and repair must be performed by NSK NAKANISHI or an authorized service center. Return to NSK NAKANISHI or an
authorized service center.
Degree of Risk
Table 1. Overhang versus Speed
Minimum gauge for cord
Volts
120V
240V
7.5m (25ft.) 15m (50ft.) 30m (100ft.) 45m (150ft.)
15m (50ft.) 30m (100ft). 60m (200ft.) 90m (300ft.)
Ampere Rating
Total length of cord
More
Than
0
6
10
12
Not
More
Than
6
10
12
16
18
18
16
14
16
16
16
12
16
14
14
14
12
12
Not Recommended
Only the applicable parts ot the Table need to be included. For instance, a 120volt product
need include the 240-volt heading.
Overhang (mm)
20
25
50
N x 0.5
N x 0.3
N x 0.1
Maximum Operating Speed (rpm)
13
2. PARTS NAMES
Fig.1
Fig.2
[1] CONTROLLER
[2] Motor Handpiece
[3]
NAKANISHI Smart Switch
[4] Optional Foot Pedal
(FC-40)
[5] Power Switch
[6] Power Lamp
[7] Reset Lamp
[8] Speed Display
[9] Speed Control Knob
[10]
Speed Limit Release Button
[11] Forward/Reverse
Selector Switch
[12] FiXpeed Switch
[13] Motor A Switch
[14] Motor B Switch
[15] Motor A Connector
[16] Motor B Connector
[17] Foot Pedal Connector
[18] Power Cord
[19]
Power Connector Assembly
[20] Handpiece Stand
3. SETTING UP THE CONTROLLER
4. OPERATING PROCEDURES
5. MEMORY SPEED FUNCTION, FIXPEED
6. SPEED LIMIT
7. MOTOR PROTECTION CIRCUIT
8. POWER UP MEMORY FUNCTION
9. ERROR CODES
3-1. Connecting the Motor/Attachment
Insert the Foot Pedal cord plug into the Foot Pedal Connector
[17] and align the pin on the plug with the groove on the
connector (Fig. 4).
3-2. Connecting the Optional Foot Pedal
Insert the Power Cord [18] plug into the Power Connector
Assembly [19] on the back of the CONTROLLER securely and
carefully align the pins (Fig. 5).
(1) Connect Power Cord [18] to AC plug.
(2) Make sure the Speed Control Knob [9] is set at the lowest speed position.
(3) Turn Power Switch [5] ON (Green Power Lamp will light)
(4) Select the direction of rotation with the Forward/Reverse Selector Switch [11] . Each time this switch is pressed,
the direction changes.
(5) To switch between motor A and motor B press either A [13] or B [14] to select the respective motor. The lamp on
the CONTROLLER for the selected motor will light. Either push A [13] or B [14] again to start rotation or push the
NAKANISHl Smart Switch on the appropriate motor.
(6) Set the rotation speed with the Speed Control Knob [9] and check the speed on the Speed Display [8].
(7) Select the desired motor by pressing either Motor Switch A [13] or B [14] .
A [13] = A Motor B [14] = B Motor
After selecting the motor either press the NAKANISHI Smart Switch [3] or press the Motor Switch again.
(8) To stop the motor rotation either press Motor Switch A [13] or B [14] or the NAKANISHI Smart Switch again.
3-3. Connecting the Power Cord
Fig. 3
Fig. 4
Fig. 5
CAUTION
Operation 1
Manual Operation
(6) Set the maximum rotation speed with the Speed Control Knob [9] and check the speed on the Speed Display [8].
(7) Depress Foot Pedal [4] and the motor will rotate. The rotation speed can be varied up to the preset maximum,
depending on the degree of depression of the Foot Pedal [4].
Operation 2
Foot Pedal Operation
Resetting the Motor Protection Circuit
To fix the speed within the range set by the Speed Control Knob [9], with the motor running, depress the Foot Pedal [4]
to the desired speed and press Motor Switch A [13] or B [14], depending on which motor is being used. The lamp on the
CONTROLLER will flash and the rotation speed will be maintained even if the Foot
Pedal [4] is released. To cancel the
Auto Speed System press Motor Switch A [13] or B [14], the NAKANISHI Smart Switch [3] or depress the Foot Pedal [4]
again.
(1) Setting the memory speed function
First with the motor stopped, preset the desired speed on the Speed Control Knob [9]. Next, press the FiXpeed
Switch [12] for more than 1 second. A 'beep' will sound and the FiXpeed lamp will light. The motor is now set to run
at the FiXpeed setting.
To Change FiXpeed Memory
Repeat the above procedure.
(2) Using Memory Speed Function
Select the desired motor by pressing either Motor Switch A [13] or B [14].
A [13] = A Motor B [14] = B Motor
After selecting the motor either press the NAKANISHI Smart Switch [3] or press the Motor Switch again. The
FiXpeed lamp will flash when the motor is running. During Foot Pedal [4] operation the FiXpeed set in memory will
act as the upper limit and the Foot Pedal [4] will still vary speed.
(3) Clearing the FiXpeed Memory
Push and hold the FiXpeed Switch [12], a 'beep' will sound and the FiXpeed lamp will shut off. The FiXpeed
memory is cleared.
(4) To Undo the Clear
Press the FiXpeed Switch [12], the FiXpeed lamp will light. The FiXpeed memory has been restored.
When the Espert 500 system is shipped from the factory, the FiXpeed is preset for both motor A and B to 20,000 min-1
(rpm).
Auto Speed System
CAUTION
FiXpeed memory cannot be set in excess of 30,000 min-1(rpm).
When using small diameter burs the Espert 500 system can be operated at more than 40,000min-1(rpm). Press the
Speed Limit Release Button [10] and turn the Speed Control Knob [9] to the desired speed.
When the motor is operated with a load exceeding its limits or the handpiece is locked, the Motor Protection Circuit
operates and interrupts the power supply to the motor. When the Motor Protection Circuit has been triggered the
Reset Lamp [7] Iights and an Error Code appears on the Speed Display [8].
During manual operation the circuit can be reset by pressing Motor Switch A [13] or B [14] again. During Foot Pedal
operation, release the Foot Pedal [4] completely and the circuit will be reset.
When the Power Switch [5] is turned On, the rotation direction and Hand/Foot selections being used when the unit
was shut down are restored. Please pay careful attention to the rotation direction.
When the Motor Protection Circuit stops the motor due to some system failure, such as overload, wire breakage,
misuse or circuit problems, the Speed Display [8] will display an Error Code.
Use of more than 40,000 min-1(rpm) is only allowable when the bur manufacturer specifies the maximum
acceptable speed in excess of 40,000 min-1(rpm). NEVER use any tools beyond the tool manufacturer's
recommended maximum speed.
Error Code
E0
E1
E2
E3
E4
E5
E6
Description
Self-Check Error
Over current detected
Over voltage detected
Motor Sensor Error
CONTROLLER Overheat
Brake Circuit Error
Rotor Lock Error
Cause
Internal Memory Malfunction
Long time use at high loads (over current)
Power Cord Shorted
Motor Winding Shorted
Motor Cord Power Line cut
Faulty Sensor (Hall IC) in motor
Motor Cord Disconnected
Motor Cord Sensor Line cut
CONTROLLER thermal shut down due to extended use at high
loads or unit placed in high temperature environment
Abnormal voltage generated in motor start/stop circuit
Faulty start/stop circuit
Collet Open
Bad Handpiece
Bad Motor
For solutions to the error codes please see the Troubleshooting Section of this manual.
[4]
[1]
[5]
[6] [8] [9] [2]
[20]
[15][13]
[14]
[16]
[11]
[17]
[17] [18][18] [19][19]
[3]
[10]
[12]
[7]
[15]
[15]
[13]
[13]
[14]
[14]
[16]
[16]
[17]
[17]
[19]
[19]
[18]
[18]
NOTICE
Grounding Method
ADAPTER
GROUNDING
PIN
METAL SCREW
COVER OF GROUND
OUTLET BOX
GROUNDING
MEANS GROUNDING
PIN
B. OTHER WARNING INSTRUCTIONS
1. Do not exceed the " Maximum Allowable Motor Rotation Speed " (Refer to " 15. SPECIFICATIONS ").
2. When sensing that the attachment and motor are overheated during operation, reduce the working force or the motor rotation speed,
or stop the operation until the attachment cools down before restarting.
3. Always wear cap, gloves, Iong sleeve shirt, safety glasses and hearing protection anytime this device is in use.
4. Do Not Touch the attachment or motor when the system is operating.
5. This is a high torque system and burs can grab on the workpiece. Always wear gloves to prevent injury anytime you are using this
system. Grinding and deburring produces lots of chips and other dust, keep work are clean and put away items that can be damaged
by chips, sand or other contaminants.
6.
Check that the collet has been securely tightened prior to each use. Burs can fly loose from the collet and injure operator or anyone nearby.
7. Avoid applying heavy hand pressure during operation; Iet the tool do the work. Heavy force can bend or break bur shanks which can
injure operator or anyone nearby. If the motor slows down noticeably during operation, you are applying too much pressure; this type
of operation will shorten motor, attachment and tool life and dramatically reduce productivity.
8. Do not use bent, broken, cracked or damaged tools, or tools with excessive runout. When using tools with a very large head to shank
diameter ratio sudden speed increases can bend or break shank. When using a new or large tool, rotate it at low speed and increase
speed gradually for safety.
9. Always operate tools within the tool manufacturer's recommended speed limits. Use of a tool outside of the manufacturer's
recommended speed limits could cause damage to the spindle and injury to the operator. A Foot Pedal can be used to vary speed.
10. Do not hit or drop the attachment or motor because the shock can damage internal components. Always set the CONTROLLER on a
flat, hard, steady surface.
11. If the CONTROLLER, motor or attachment emit smoke, burning plastic odor or any other unusual odor, please immediately turn off
the power switch, disconnect the power cord and send to NAKANISHI for service.
12. Never attempt to operate this system, touch power cord or switch unit on or off, etc. with wet hands. Failure to adhere to this warning
can result in severe electric shock.
13. Do not exceed 13mm overhang for mounted grindstones. In case overhang must exceed 13mm reduce the motor speed in
accordance with Table 1 .
OM-K0331E 004

Fig.6
CONTROLLER and Motor
NOTICE
10. FUSE REPLACEMENT
11. MAINTENANCE MODE
12. MOTOR AND ATTACHMENT OPERATION
Fuses are located in the Power Connector Assembly [19]. Depress
the spring tabs located on the top and bottom of the Power
Connector Assembly and remove it to change the fuses.
(AC120V : T3.15AL 250V) (AC230V : T1.25AH 250V) (Fig. 6).
CAUTION
Please make sure to replace fuses with same rated 'Slow
Blow' or 'Time Delay' type fuses. Failure to replace with the
proper type fuse will result in continuous fuse failures or
damage to the unit and motor.
This system incorporates a maintenance mode to check the function of the switches, display, Foot Pedal, motor, etc.
To activate the Maintenance Mode press and hold the FiXpeed Switch [12] and Motor Switch A [13] simultaneously
and turn the Power Switch [5] on. Hold the buttons until the unit 'beeps' (about 2 seconds). With maintenance mode
activated the Speed Control Knob will switch between function checks and the function will be displayed in the Speed
Display. The check will be displayed in the following order from lowest speed setting "oP", "dP", "HL", "Pd" and "in"
To release Maintenance Mode, turn the unit off and on again.
13. HANDPIECE STAND
14. HANDPIECE HOLDER
15. SPECIFICATIONS
16. TROUBLESHOOTING
On the bottom of the Handpiece Stand, the tools necessary for
attachment maintenance and a spare collet (optional) can be
mounted (Fig.15).
The Handpiece Holder can be mounted on the right side of the
CONTROLLER, giving you an easy plaoe to store the motor and
attachment when not in use, Insert the Handpiece Holder into the
slot and tighten the screw, You can adjust the Handpiece Holder
angle to suit your taste (Fig. 16).
Function Checks are as follows
1) [oP] : Switch operation check.
2) [dP] : Display check
3) [HL] : Motor Signal check (Hall IC check)
Press the Forward/Reverse Selector Switch [11] and the Speed Display [8] will display one or two horizontal lines.
Turn the motor slowly by hand and the display will show one line, two lines, one line, two lines,...smoothly from top to
bottom to top. If any one of these three lines does not light, the sensor (Hall IC) in the motor is bad or the signal line in
the motor cord is cut. Please send the unit and motor for repair. To cancel this check, press the Forward/Reverse
Selector Switch [11] again.
4) [Pd] : Foot Pedal check
Press the Forward/Reverse Selector Switch [11] , and the Speed Display [8] will display alphanumeric characters
(0~9, A~F) according to the degree of depression of the Foot Pedal [4]. Also depressing the Foot Pedal slightly lights
the Reset Lamp [7] and depressing it fully extinguishes the lamp, If the Speed Display [8] does not change smoothly
or theReset Lamp [7] does not light properly, the Foot Pedal [4] may be bad. To cancel this check, press the Forward/
Reverse Selector Switch [11] again.
5) [in] : Initializing Function
1) Removal of the Collet
Press the Forward/Reverse Selector Switch [11] until a 'beep' is heard. The settings for rotation direction, Hand/Foot
and other settings will be reset to factory defaults.
Rotation Direction: FWD (Forward)
Motor Selector Switch: A
Speed: 20,000min-1 (rpm)
Open the collet by turning the Bur Lock Ring to the open
position. The collet is open and the bur can be removed. Install
the new bur and turn the Bur Lock Ring in the Lock direction.
Finally turn the Bur Lock Ring all the way to the Lock position
until it clicks (Fig.7).
Press the Forward/Reverse Selector Switch [11], and the lamps will light one by one to verify their normal operation.
To cancel this test press the Forward/Reverse Selector Switch [11] again.
12 - 1. Installation and Removal of Burs
Open the Bur Lock Ring and turn the collet counterclockwise
until you can remove the collet. Normally, the collet can be
removed and replaced by hand; if it is too tight use the included
wrench to remove it as shown in the picture (Fig.8).
2) Cleaning the Collet and Spindle
Remove and thoroughly clean the collet and ID of the spindle
to maintain accuracy. Remove the collet and clean the collet
and spindle ID at least once a week.
3) Installation of the Collet
Thinly apply oil before insertion.
Open the ring, insert the dummy bur or the bur in use into the
collet, and turn the collet clockwise by hand until it stops. Then,
lock the ring, and the collet could hold the bur securely. (Fig.
10)
Occasionally, when using a large diameter bur at high
torque, the collet may gradually tighten making it difficult to
remove. In this case align the spindle's wrench flats in the
nose's slits and use the provided L wrench to hold the
spindle. Open the Bur Lock Ring and turn the collet
counterclockwise with the provided collet wrench to remove
the collet (Fig. 9) .
· Turn the motor cord nut counterclockwise and remove the cord. Hold the motor nut only when disconnecting the
motor cord; do not pull on the motor cord.
12 - 2. Cleaning and Replacement of the Collet
12 - 3. Disconnecting and Connecting the Motor Cord to the Motor
LOCK
OPEN
Loosen
Loosen
Turn until finger-tight
Loosen Motor Cord Nut
Fig.7
Fig. 8
Fig. 9
Fig. 10
Fig. 11
Fig. 12
Never turn the Bur Lock Ring while the motor is rotating.
Turning the Bur Lock Ring with the motor rotating can cause
injury and damage to motor and attachment.
CAUTION
• Be very careful to push the motor cord connector straight into the motor. The motor pins can be bent
easily and cannot be bent back.
• Don't remove the motor cord unless necessary.
Removal
· Carefully align the pins on the motor with the holes on the motor cord connector and gently push the motor cord
connector onto the motor.
· Tighten the motor cord nut by turning clockwise until it is tight.
Connecting
12 - 4. Removing the Handpiece from the Motor
The Handpiece and Motor are screwed together at the rear of
the Handpiece. Hold the motor body and attach the provided
pin wrench to the rear of the Handpiece. Turn the pin wrench
counterclockwise and unscrew the Handpiece (Fig. 13).
To connect the Handpiece to the Motor, turn the Handpiece
clockwise and tighten firmly. If the drive connections do not
align properly, you will not be able to turn the attachment
more than two turns. If this happens, DO NOT FORCE.
Unscrew the attachment slightly and turn the bur by hand
until the drive connections align, and then screw the motor
and attachment together (Fig. 14).
Handpiece Holder
Screw
Fig.13
Fig.14
Fig.15
Fig.16
CAUTION
CONTROLLER
Motor Handpiece
When trouble is found, please check the following prior to consulting your dealer.
17. DISPOSAL OF THE PRODUCTS
(1) Torque Type
Option
(1) Foot Pedal
Model Number
Power Requirements
Weight
Dimensions
NE96
120/230Vac 50/60Hz 30W
2.6kg
W172 x D230 x H94mm
Handpiece Stand
Model Number
Weight
K-274
120g
Handpiece Holder
Model Number
Weight
Y900071
18g
Model Number
Motor Rotation Speed
Max. Output
Max. Torque
Weight
Dimensions
Cord Length
ENK50T-HR
1,000 - 50,000min-1(rpm)
200W
8.7cN·m
250g (w/o Coiled Cord)
L180mm
1.5m
(2) Compact Type
Model Number
Motor Rotation Speed
Max. Output
Max. Torque
Weight
Dimensions
Cord Length
ENK50C-HR
1,000 - 50,000 min-1(rpm)
140W
6 cN·m
210g (w/o Coiled Cord)
L167mm
1.5m
Model Number
Weight
FC-40
660g
(2) Collet
Collet
(CHH- )
ø0.3-ø3.0mm in 0.1mm increments
ø2.35mm and ø3.175mm
Trouble Cause / Check Remedy
Trouble Cause / Check Remedy
Pilot Lamp
does not Light
The Attachment
does not turn with
the collet closed
Attachment gets
hot during use
Vibration or Noise
during use
High Runout
Bur slips out
Send for Service.
Same as Above.
Same as Above.
Replace the bur.
Clean the collet and spindle ID.
Replace the collet.
Send for Service.
Tighten the collet.
Refer to "12. MOTOR AND ATTACHMENT OPERATION".
Bearings Contaminated or Seized.
Bearings Contaminated.
Same as Above.
Bur is bent or damaged.
Contaminants in collet or spindle.
Collet is worn.
Bearings worn.
Collet is Loose.
Press the switch on the panel you wish to check and the light on the panel will light to indicate proper operation of the
switch .
The Motor and Handpiece Do Not Run · Reset Lamp Lights
Foot Pedal
does not
Work
Error Code E0
Error Code
E1
Error Code
E2
Error Code
E3
Error Code
E4
Error Code
E5
Error Code
E6
Power Plug is disconnected.
Fuse is Blown.
Power Switch is Bad.
Foot Pedal Connection is Loose.
Check to see if Foot Pedal operates normally in
maintenance mode (4) [Pd] : Foot Pedal Check.
Turn Power on again.
Turn Power on again.
If you have spare units, replace the
motor and motor cord and check
operation.
Motor cord is disconnected.
If you have spare units, replace the
motor and motor cord and check
operation.
Motor cord is disconnected.
Check to see if motor operates
normally in maintenance mode (3)
[HL] : Motor Signal Check.
Shut down the system and allow to
cool for 10 minutes and check
operation again.
Turn Power on again and start and
stop motor several times.
Collet is Open.
Check to see if the bur can be lightly
rotated by hand.
The Speed Control Knob is set low, for Foot Pedal
operation this sets the maximum motor speed.
Insert the power plug correctly.
Replace it with the specified fuse. If the reason the fuse
has blown is unknown, send for service.
Send for Service.
Connect the Foot Pedal correctly.
If the Foot Pedal does not operate normally, replaced it or
send it for service.
If the same Error Code appears, send for service.
If system operates normally, the Error Code is due to a
temporary overload, which is not a problem.
If system operates normally after replacing the motor and
motor cord; the motor and/or motor cord may be shorted.
Send the motor and motor cord for service. If the same
Error Code still appears after replacing, send the system
for repair.
Connect the motor cord correctly.
If system operates normally after replacing the motor and
motor cord; the motor and/or motor cord may be cut. Send
the motor and motor cord for service. If the same Error
Code still appears after replacing, send the system for
repair.
Connect the motor cord correctly.
If any problems are found during the check, the motor
cord may be cut or the sensors in the motor may be bad,
send for service.
If the system operates normally, there is no problem. Check the
operating environment, storage location, etc for high temperatures.
If the same Error Code appears frequently, send for service.
If the system operates normally, there is no problem. If the
same Error Code appears, send for service.
Lock the Bur Lock Ring fully.
If rotation is abnormal, send for service.
Set the maximum rotation speed with the Speed Control
Knob.
Attachment
Can't Increase
Rotation Speed
Transmission Clutch
Loosen
When disposal of a CONTROLLER, Motor or Attachment are necessary, follow the instructions from your local
government agency for proper disposal of When disposal of a Reducer is necessary, follow the instructions from your
local government agency for proper disposal of industrial components.
CAUTION
Fuses blow only when a short circuit or voltage spike on the
AC Iine occurs. If you are uncertain of the cause for a fuse
failing, send the unit to an authorized NAKANISHI service
shop for repair.
2022-04-20 CACC0422 002E