7-1 Protection circuit
An electronic circuit breaker automatically functions to protect the micromotor and the control
unit if the micromotor is ever overloaded. Power supply to the micromotor will automatically be
terminated and the Error code will be displayed on the control unit.
SResetting the protection circuit
To reset the protection circuit, release and then depress the speed control pedal or push the
system key on the control unit.
7-2 Error Code
If an operational problem occurs the display shows the Error code to allow an immediate
problem diagnosis.
6-2 Calibration of the Handpiece to be used
The resistance of a handpiece attachment against the rotation of the micromotor varies slightly
depending on the handpiece model, its age and condition, the degree of wear on the handpiece
gears, and so on. The Surgic XT unit incorporates an automatic function to recognize the level
of the resistance of any handpiece attached to the micromotor, and to calibrate the micromotor
to rotate the handpiece attachment to the specific speed and torque settings required.
aAttach the handpiece to the micromotor and remove the bur.
sPress the [System] key for approx. 3 seconds until a long beep is heard. "CAL" is displayed.
dPress the [Gear Ratio] key and select the gear ratio of the attached handpiece.
fPress the [System] key again. After a moment the micromotor will automatically starts to run.
After a short series of resistance diagnosis is completed, the display returns to normal display
and the micromotor will automatically stop. Calibration of the handpiece is now completed.
6-3 Standard operation
All standard operational functions can be controlled at the foot control.
aTurn on the Main Switch
The Control Unit is ready to perform the program memorized in program number 1.
sSelect the desired program number
Step on the foot control PRG [Program] button and the program display ascends to the next
program number. Select the desired program number as displayed on the control unit. The
program numbers ascend to 10 and then continue on to program 1. Pressing the PRG [Program]
Button for one second more could get back to one program before the selected program.
dVerify the details of the program
Verify the details of the program on the display.
The largest numerals displayed exhibit the speed setting. To verify torque, step on the foot
control Speed / Torque button and the speed display changes to the torque setting display.
fOperating the micromotor
Step on the speed control pedal in the middle of the foot control and the micromotor will start to
run. When the coolant solution flow is programmed to operate the pump will also automatically
run. Speed increases as the pedal is depressed. When the pedal is fully depressed the speed
reaches the maximum set value.
gActivation of the torque limiter
During operation of the micromotor, when the drilling load reaches the programmed torque
upper limit the integrated torque limiter automatically activates in to prevent torque application
excessive to the set requirement. When the torque limiter activates, the motor stops over
beeping after 5 seconds. To reactivate the micromotor simply press the [ System ] key.
hStopping the micromotor
Release the foot control pedal, and the micromotor will automatically stop.
jReversing the micromotor rotational direction
To reverse direction of the micromotor (and bur) simply step on the foot control Forward /
Reverse button. A warning beep can be heard when the rotational direction is in reverse mode.
Care and maintenance
7
!1!0
CAUTION
•Because the handpiece AUTOMATICALLY starts to run, any bur must be
removed from the handpiece before beginning the calibration process.
Leaving a bur in the handpiece may cause harm to the operator.
Care should be exercised not to ever add any load to a handpiece during
calibration, because an incorrect diagnosis would result in incorrect
torque control.
•
If “FAIL”is displayed on the liquid crystal panel, check the mounting of
each part and operate again. If “FAIL”is still displayed, contact your dealer.
CAUTION
This equipment is optimized to obtain the highest accuracy at a gear ratio of
1/20. When using another gear ratio, please note that the accuracy
decreases with an increase in the ratio relative to 1/20.
Erroneous memory.
Memory failure.
Extended use under heavy load.
Short circuit in the power cord.
Short circuit in the motor cord.
Main power cord failure.
Micromotor sensor failure (Hall IC).
Micromotor cord failure.
Signal line failure.
Overheating by extended use
under heavy load.
Operation of the unit under an
extremely high temperature.
Abnormal voltage generated in the
start / stop switch circuit.
Failure in the start / stop switch
circuit.
Handpiece attachment failure.
Micromotor failure.
When the motor stops for more
than 5 seconds after
reaching the torque upper limit.
Cause of Error
Request repair.
Electrical contact may be
insufficient.
Securely re-connect the motor
cord.
When an error cannot be
eliminated, request repair.
Allow it to cool down before use.
In order that heat is sufficiently
radiated, periphery of the main unit
should be well-ventilated wherever
possible.
When an error cannot be
eliminated, request repair.
When rotation and stop are repea-
ted in short frequencies, a circuit
may be activated which limits ac-
celeration at start. Wait a few sec-
onds and then use.
When an error cannot be elimin-
ated, request repair.
The chuck may be opened, or may
not be sufficiently closed.
Securely close the chuck.
When an error cannot be
eliminated, request repair.
This is not a failure. It stops for
safety reasons.
When the error is reset, this can
be used as it is.
Remedy
System Error
Excessive Current
Detected
Excessive Voltage
Detected
Motor Sensor Error
Unit Interior
Over-heating Error
Braking Error
Motor Rotation
Failure Error
Cause of Error
E 0
E 1
E 2
E 3
E 4
E 5
E 6
Error Code
Display
