LT-910 Operators Manual March 2010

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Use this instrument properly and safely.

BEFORE USE, READ THIS MANUAL. This Operator's Manual contains information necessary for the operation of the NIDEK SATELLITE TRACER Model Lt 910. This manual includes operating procedures, safety precautions, specifications, and information about accessories and maintenance. This manual is necessary for proper use. Especially, the safety precautions and operating procedures must be thoroughly understood prior to the operation of the instrument. Keep this manual handy for reference. If you encounter any problems or have questions about the instrument, please contact NIDEK or your authorized distributor.

Safety precautions In this manual, a signal word is used to designate a degree or level of safety alerting. The definition is as follows.

CAUTION

• Indicates a potentially hazardous situation which, if not avoided, might result in minor or moderate injury or property damage accident.

Even situations that are labeled CAUTION might result in serious injury under certain conditions. Safety must be followed strictly at all times.

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Use precautions

Before Use CAUTION

• Do not use the instrument for other than the intended purpose. NIDEK is not responsible for accidents or malfunctions caused by careless use. • Never disassemble nor touch the inside of the instrument. This may result in electric shock or malfunction. • Install the instrument in an environment that meets the following conditions. The following conditions must be maintained during use. Use conditions Temperature: 5 to 40ºC (41 to 104ºF) Humidity: Relative humidity must not exceed 50% at a maximum temperature of 40ºC Pressure: 700 to 1060 hPa Installation place: Interior A place with low dust A place free of vibration and impact • Avoid storing the instrument where it is exposed to rain or water, or poisonous gas or liquid is present. Corrosion or malfunction of the instrument may occur. • Install the instrument in a location with an adequate operating area in front of the instrument as illustrated on page V • Be sure to use a wall outlet which meets the power specification requirements. If the line voltage is too high or too low, the instrument may not perform properly. Malfunction or fire may occur. • Connect the power plug to a ground outlet. Or connect a grounding wire to a ground terminal. Electric shock or fire may occur in the event of malfunction or power leakage. • Completely insert the power plug into the outlet as far as the prongs will go. Fire may occur if the instrument is used with a loose connection. • Do not place heavy objects on the power cord. The damaged power cord may cause fire or electric shock. • Do not use the power cord other than supplied. Also do not connect the supplied cord to any other instrument. Malfunction or fire may result. • Before connecting the cable, turn off the power switch and disconnect the power cord from an outlet. Malfunction of the instrument may result.

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CAUTION

• Hold the base with both hands when carrying the instrument to another location. Accidental dropping of the instrument may cause damage to the instrument and/or cause bodily injury.

During Use CAUTION

• Connect the cable to the RS-232C connector securely, maintaining the correct orientation of the cable connector. Data transmission is not performed properly. • In the event of smoke or strange odors, immediately turn off the instrument and disconnect the power plug from the outlet. After you are sure that the smoke has stopped, then contact NIDEK or your authorized distributor. Usage of the instrument under such abnormal conditions may cause fire or electric shock. In case of fire, use a dry chemical (ABC) extinguisher to extinguish the fire. • Immediately replace the power cord if the internal wires are exposed, the instrument turns on or off when the power cord is moved, or the cord and/or plug are too hot to be held with hands. This may result in electric shock or fire. • Be sure not to apply too much pressure on the stylus of the tracing unit. The stylus is easy to bend or break.

After Use CAUTION

• Turn off the power switch and put the dust cover on when the instrument is not in use. If dust settles, it may affect the measurement accuracy or result malfunction. • Do not yank the power cord to disconnect it from a wall outlet but hold the plug. This can damage the metal core of the cord and may result in fire, short circuit or electric shock. • Occasionally clean the prongs of the power plug with a dry cloth. If dust settles between the prongs, the dust will collect moisture, and short circuit or fire may occur. • If the instrument will not be used for a long time, disconnect the power cord from the wall outlet. Fire may occur.

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CAUTION

• Maintain the surrounding temperature and humidity at the following ranges during transport and storage of the instrument. Environmental conditions Temperature: -25 to 70°C (-13 to 158 ºF) Humidity: 10 - 100% (Non-condensing) A place with low dust A place not exposed to direct sunlight • To transport the instrument, use the special packing materials to protect the instrument from shock or impact. Excessive vibration or impact to the instrument may cause malfunction.

Maintenance and Check CAUTION

• Be sure to perform check before use and after use. It is recommended to have regular checks every two years. Regular checks must be performed by qualified personnel. Ask NIDEK or your authorized distributor for details. • When performing maintenance work, secure a sufficient maintenance space. (see page V). Maintenance work in an insufficient space may result in injury. • Use the specified fuses to replace the old ones. If not, fire may occur. • Before fuse replacement, turn off the instrument and disconnecting the power cord from the wall outlet. Electric shock may result. • Never use organic solvents such as a paint thinner to clean the exterior of the instrument. It may ruin the surface of the instrument.

IV

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Disposal CAUTION

• Follow the local ordinances and recycling regulations regarding disposal or recycling of the components. It is recommended to commission the disposal to a designated industrial waste disposal contractor. • When disposing of packing materials, sort them by material and follow local ordinances and recycling regulations.

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VI

Table of Contents 1. BEFORE USE... 1 1.1 Outline of the instrument...1 1.2 Configuration...2 1.3 Labels...4 1.4 Checking Contents...5 1.5 Before First Use...6 1.6 Tracing Unit Calibration...8 1.7 Storing the Pattern Setting Unit...10

2. OPERATION PROCEDURES... 11 2.1 Operation Flow...11 2.2 Preparation...12 2.3 Tracing...13 2.3.1 2.3.2 2.3.3 2.3.4 2.3.5

Frame tracing...13 Pattern tracing...17 Demo lens tracing...18 Stopping tracing...21 After use...22

2.4 Daily Checks...23 2.4.1 2.4.2

Check before use...23 Check after use...23

3. MAINTENANCE... 25 3.1 Troubleshooting...25 3.2 Replacing Fuses...26 3.3 Cleaning...27 3.4 List of Replacement Parts...27

4. SPECIFICATIONS AND ACCESSORIES... 29 4.1 Specifications...29 4.2 Standard Configuration...31 4.2.1 4.2.2

Standard configuration...31 Optional accessories...31

VII

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5. INDEX... 33

VIII

1. BEFORE USE 1.1

Outline of the instrument

1

The NIDEK SATELLITE TRACER Model Lt 910 is a frame tracer which measures the shapes of glasses. It traces the frames in three dimensions to measure the three-dimensional lens circumference. In addition, measurement of patterns or demo lenses is available. The instrument is very easy to use simply by setting frames or such and pressing a switch. This instrument can be connected to various kinds of lens edging equipment in a laboratory to comprise a lens processing system.*1

*1.

The Lt 910 interface specifications must be compatible with the connecting systems. • Standard specifications → Connecting to a personal computer or NIDEK’s grinding system. • LAB specifications → Connecting to a LAB system. • NAVIS-EC specifications → Connecting to a NAVIS-EC.

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BEFORE USE: Configuration

1.2

Configuration

{ Top view Power switch

3. Rim clips 2. Upper slider 4. Stylus

3. Rim clips

1. Lower slider

5. Pattern setting unit support

8.

7.

6.

{ Rear view

9. Inlet Fuse holder

10. RS-232C connector (Only for STD specifications) 12. Barcode connector

(Except for STD specifications)

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10. RS-232C connector 11. Computer connector (Only for STD and NAVIS-EC specifications)

BEFORE USE: Configuration

1. Lower slider 2. Upper slider Frames are fastened between these sliders. 3. Rim clips Hold the rims of frames. Each upper and lower slider has two clips.

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4. Stylus Traces a frame groove to measure its frame shape. 5. Pattern setting unit support Mounts the pattern setting unit set with a pattern or demo lens. 6. Starts right-eye tracing. 7. Starts both-eye tracing. 8. Starts left-eye tracing. 9. Inlet This is where the power cord is connected. 10. RS-232C connector As an external tracer, this connector is used for connecting the SNT/LNT models of the Le 1000, NT model of the Lex 1000, and Ice 900. 11. Computer connector This is a communication connector to connect the server computer. (Only for STD and NAVIS-EC specifications) 12. Barcode connector This is where the barcode scanner (or numeric keypad) is connected. (Except for STD specifications)

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BEFORE USE: Labels

1.3

Labels Cautionary labels are provided on the Lt 910. If labels are curling up or characters fading and becoming barely legible, contact NIDEK or your authorized distributor.

Indicates that caution must be taken. Refer to the operator's manual before use.

Indicates a dangerous part to which a high voltage is applied. The state of the power switch. If the symbol side of the switch is flipped down, the power is not supplied to the tracer. The state of the power switch. If the symbol side of the switch is flipped down, the power is supplied to the tracer. Indicates that the tracer must be supplied only with alternating current.

Indicates the fuse rating.

[Top view]

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BEFORE USE: Checking Contents

[Front view] or

1

or

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1.4

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Checking Contents Unpack the contents from the shipping carton and check them. The following is included in the standard configuration. • Main body

• RS-232C cable

• Power cord

• Holder for pattern setting unit

• Pattern setting unit

• Dust cover

• Standard frame

• Spare fuse (2 units)

• Standard pattern

• Operator’s manual (this book)

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BEFORE USE: Before First Use

1.5

Before First Use Place the tracer on a stable table and connect the power cord.

1 Place the main body to a stable table. 2 Remove the cushion retaining the upper and lower slider.

Cushion

3 Remove the tape and spacer retaining the inside of the tracing unit.

Tape

Spacer

4 Connect the power code and RS-232C cable to the rear of the tracer.

Fix the RS-232C cable by tightening the knob attached to the connector.

5 Connect another end of the RS-232C cable to the instrument to be connected.

RS-232C-cable

Power code

6 Make sure that the power switch is turned off (

) and plug the power cord in the wall outlet.

CAUTION • The electrical outlet must have a grounding terminal.

Electric shock or fire may occur in the event of malfunction or power leakage.

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BEFORE USE: Before First Use

7 Turn the power switch on (

).

The Lt 910 is initialized.

8 Calibrate the tracing unit. See “1.6 Tracing Unit Calibration” (page 8)

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This is all you have to do before use.

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BEFORE USE: Tracing Unit Calibration

1.6

Tracing Unit Calibration Calibrate the tracer using the provided standard frames and standard pattern. Standard frames... Frame tracing calibration with the stylus Standard pattern... Pattern tracing calibration with the pattern tracing pin Calibration is performed by service personnel at the time of installation. It is recommended to calibrate the tracing unit for high tracing accuracy before use. In addition, perform calibration also when an error occurs in circumference.

1 Turn on the power. 2 After initialization, set the instrument to calibration mode. 1) Press

while pressing

2) Release

.

3) Release

.

.

A beep sounds and the indicator of

3 Set the provided standard frames (

blinks.

45).

Set the standard frames, with the side inscribed with the number facing up. Fit the rim clips into the grooves of the frames.

4 Press

.

Automatic calibration (frame) starts. After several traces, calibration finishes. A beep sounds, the instrument exits from calibration mode, and the standard frames are released. Standard frames (

45)

• To avoid calibration with frames other than standard one, when the circumference exceeds the correction value of ±1 mm, the indicator of blinks and calibration is not performed automatically. In such a case, take the following actions. Confirm that the provided standard frames (

45) are used and press

.

→Calibration becomes enabled. Go to Step 5. When other frames are used, press

or

.

→Calibration becomes disabled. Perform calibration with the standard frames again

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BEFORE USE: Tracing Unit Calibration

5 Set the instrument to calibration mode. 1) Press

while pressing

2) Release

.

3) Release

.

.

1 A beep sounds and the indicator of

blinks.

6 Remove the standard frames and set the provided standard pattern.

Set the standard pattern, with the side inscribed A facing up. See Steps 1 to 2 of “2.3.2 Pattern tracing”.

7 Press

.

Automatic calibration (pattern) starts. After calibration is completed, a beep sounds and the instrument exits from calibration mode and returns to normal mode.

8 Remove the standard pattern.

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BEFORE USE: Storing the Pattern Setting Unit

1.7

Storing the Pattern Setting Unit Store the pattern setting unit free from loss or damage when not in use. It is recommended to attach the provided holder for the pattern setting unit to either side cover of the Lt 910 and to set the pattern setting unit to the holder.

{ Attaching the holder for the pattern setting unit The holder can be attached to both the left and right

Holder for the pattern setting unit Pattern setting unit

sides. The procedure for attaching it to the right side is described here.

1 Unscrew two countersunk head screws in the right side of the bottom of the Lt 910.

Countersunk head screws

2 Attach the provided holder for the pattern setting unit with the screws unscrewed in Step 1.

Holder for pattern setting unit

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2. OPERATION PROCEDURES In this section, the tracing procedure is mainly explained. For connecting systems and transferring data, see the manual of the connecting device or server software.

2.1

2

Operation Flow

Power ON 2.3 Tracing (page 13) 2.3.1 Frame tracing (page 13) 2.3.2 Pattern tracing (page 17) 2.3.3 Demo lens tracing (page 18) 2.3.4 Stopping tracing (page 21) Transferring data Power OFF

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