Mitsubishi C70 Manuale utente

MELDAS and MELSEC are registered trademarks of Mitsubishi Electric Corporation.

Other company and product names that appear in this manual are trademarks or registered trademarks of the respective

company.

Introduction

This manual is referred to when using the C70.

This manual explains how to operate the screens of the C70. Read this manual thoroughly

before using the CNC unit. To safely use this CNC unit, thoroughly study the "Precautions for

Safety" on the next page before use.

Details described in this manual

CAUTION

For items described in "Restrictions" or "Usable State", the instruction manual issued by the

machine manufacturer takes precedence over this manual.

An effort has been made to note as many special handling methods in this user's manual.

Items not described in this manual must be interpreted as "Not Possible".

This manual has been written on the assumption that all option functions are added.

Refer to the specifications issued by the machine manufacturer before starting use.

Refer to the manuals issued by the machine manufacturer for each machine tool

explanation.

Some screens and functions may differ or may not be usable depending on the NC version.

In this NC unit, the machining programs, parameters and tool compensation data are saved in the

memory (memory elements). This NC unit's memory is backed up by lithium batteries, and under

normal conditions will last 6 years from the date of manufacture. However, data contents could be lost

under the conditions described below.

To prevent data loss, output important programs, parameters, etc., to the external memory devices

and save them.

Data in the memory can be lost under these kinds of conditions.

(1) Incorrect operation

Data can be lost if the operator inadvertently changes data while editing a program or setting

parameters.

(This is not really a data loss, but it is a loss from the standpoint that the original data is gone.)

Data can be lost if the operator inadvertently deletes data or initializes NC unit.

(2) Battery life expires

When the battery life expires and there is not enough voltage to store the data in the memory,

data can be lost by turning the power OFF.

(3) Faults

Data can be lost when faults occur and the control unit must be replaced.

< Important Usage Notes >

Precautions for Safety

Always read the specifications issued by the machine manufacturer, this manual, related

manuals and attached documents before installation, operation, programming, maintenance

or inspection to ensure correct use.

Understand this numerical controller, safety items and cautions before using the unit.

This manual ranks the safety precautions into "DANGER", "WARNING" and "CAUTION".

When the user may be subject to imminent fatalities or major injuries if

handling is mistaken.

When the user may be subject to fatalities or major injuries if handling

is mistaken.

When the user may be subject to injuries or when physical damage

may occur if handling is mistaken.

Note that even items ranked as " CAUTION", may lead to major results depending on

the situation. In any case, important information that must always be observed is described.

The meanings of the pictorial signs are given below.

The following sings indicate prohibition and compulsory.

This sign indicates prohibited behavior (must not do).

For example, indicates “Keep fire away”.

This sign indicated a thing that is pompously (must do).

For example, indicates “it must be grounded”.

The meaning of each pictorial sing is as follows.

CAUTION

rotated object

CAUTION

HOT

Danger

Electric shock

risk

Danger

explosive

Prohibited

Disassembly is

prohibited

KEEP FIRE

AWAY

General

instruction

Earth ground

DANGER

WARNING

CAUTION

DANGER

1. Items related to maintenance

Do not touch the terminals while power is on. Doing so could cause electric shock.

Correctly connect the battery. Also, do not charge, disassemble, heat, place in fire,

short circuit, or solder the battery.

Mishandling of a battery may cause overheating, cracks or ignition which could result

in injury and fire.

Switch off all phases of the externally supplied power used in the system when

cleaning the module or retightening the terminal or module mounting screws.

Not doing so could result in electric shock. Loose tightening of terminal screws can

cause a short circuit or malfunction. Over tightening of screws can cause damages to

the screws and/or the module, resulting in fallout, short circuits, or malfunction.

The capacitor is mounted to the modules. Do not incinerate the modules so that the

incineration of capacitor may cause burst. For disposal of the modules, request for

specialized industrial waste disposal services who has incineration facility.

2.Items related to inspection

Never open the front case or terminal covers while the power is ON or the unit is

running, as this may lead to electric shocks.

Never run the unit with the front case or terminal cover removed. The high voltage

terminal and charged sections will be exposed and may lead to electric shocks.

Never remove the front case or terminal cover at times other than wiring work or

periodic inspections even if the power is OFF. The insides of the controller and servo

drive unit are charged and may lead to electric shocks.

When performing wiring work or inspections, turn the power OFF, wait at least ten

minutes, and then check the voltage with a tester, etc. Failing to do so may lead to

electric shocks.

Never operate the switches with wet hands, as this may lead to electric shocks.

Do not damage, apply excessive stress, place heavy things on or sandwich the

cables, as this may lead to electric shocks or fire.

Do not touch the controller, servo drive unit or servomotor terminal blocks while the

power is ON, as this may lead to electric shocks or fire.

Do not touch the built-in power supply, built-in grounding or signal wires of the

controller and servo drive unit, as this may lead to electric shocks.

WARNING

1. Items related to program development

Do not put any startup switch for C70 on GOT’s touch key. If a communication fault

(including cable disconnection) occurs between GOT and CNC C70, the

communication will be suspended and the GOT will become inoperative. In this

case, even when you release your hands from the startup switch, CNC will fail to

recognize the cutoff of startup signal, which may cause serious accidents.

2. Items related to operation

If the operation start position is set in a block which is in the middle of the program

and the program is started, the program before the set block is not executed. Please

confirm that G and F modal and coordinate values are appropriate. If there are

coordinate system shift commands or M, S, T and B commands before the block set

as the start position, carry out the required commands using the MDI, etc. If the

program is run from the set block without carrying out these operations, there is a

danger of interference with the machine or of machine operation at an unexpected

speed, which may result in breakage of tools or machine tool or may cause damage

to the operators.

Under the constant surface speed control (during G96 modal), if the axis targeted for

the constant surface speed control moves toward the spindle center, the spindle

rotation speed will increase and may exceed the allowable speed of the workpiece or

chuck, etc. In this case, the workpiece, etc. may jump out during machining, which

may result in breakage of tools or machine tool or may cause damage to the

operators.

CAUTION

1. Items related to product and manual

For items described as "Restrictions" or "Usable State" in this manual, the instruction

manual issued by the machine manufacturer takes precedence over this manual.

An effort has been made to describe special handling of this machine, but items that

are not described must be interpreted as "Not Possible".

This manual is written on the assumption that all option functions are added. Refer to

the specifications issued by the machine manufacturer before starting use.

Refer to the manuals issued by the machine manufacturer for each machine tool

explanation.

Some screens and functions may differ or may not be usable depending on the NC

version.

2. Items related to installation and assembly

Always ground the signal cable to ensure stable operation of the system. Ground the

NC unit, power distribution panel and machine to a one-point ground to establish the

same potential.

3. Items related to preparations before use.

Always set the stored stroke limit. Setting no limits could result in collision with the

machine end.

Always turn the power OFF before connecting/disconnecting the input/output device

cables. The NC and input/output device could be damaged if the cable is connected

in the power ON state.

4. Items related to screen operation

If the tool compensation amount is changed during automatic operation (including

single block stop), the amount will be validated from the next block or several blocks

following.

If the workpiece coordinate offset amount is changed during single block stop, the

changes will be valid from the next block.

Pay close attention to the sequence operation when carrying out forced data setting

(forced output) in the PLC I/F (diagnosis) screen.

If the operation start position is set from a block in the program and the program is

started, the program before the set block is not executed. If there are coordinate

system shift commands or M, S, T, and B commands before the block set as the

starting position, carry out the required commands using the MDI, etc. There is a

danger of interference with the machine if the operation is started from the set starting

position block without carrying out these operations.

To prevent the influence of data loss and data transformation over the line, always

carry out data comparison after transferring a machining program.

Do not change the setup parameters without prior consent from the machine

manufacturer.

CAUTION

5. Items related to programming

If there is no value after the G command, the operation will be the "G00" operation

when the program is run due to key chattering, etc., during editing.

" ; " "EOB" and " % " "EOR" are symbols used for explanation.

The actual codes are: For ISO: "CR, LF", or "LF" and "%".

Programs created on the Edit screen are stored in the NC memory in a "CR, LF"

format, but programs created with external devices such as the FLD or RS-232C may

be stored in an "LF" format.

The actual codes for EIA are: "EOB (End of Block)" and "EOR (End of Record)".

When creating the machining program, select the appropriate machining conditions so

as not to exceed the machine and NC performance, capacity and limits. The examples

do not consider the machining conditions.

Do not change the fixed cycle program without prior consent from the machine

manufacturer.

6. Items related to operation

Do not enter the movable range of the machine during automatic operation. Make

sure not to place hands, legs or face near the spindle during rotation.

Always carry out dry run operation before actual machining, and confirm the machining

program, tool offset amount and workpiece coordinate system offset amount.

7. Items related to faults and errors

If the BATTERY LOW warning is output, save the machining programs, tool data and

parameters to an input/output device, and then replace the battery. If the BATTERY

alarm occurs, the machining programs, tool data and parameters may be damaged.

After replacing the battery, reload each data item.

If the axis overruns or makes an abnormal noise, press the EMERGENCY STOP

button immediately, and stop the axis.

When setting the parameter not to check the overheat, the control unit and the

communication terminal may not be controlled because of overheat.

In such case, axis runaway may cause a machine breakage, an accident resulting in

injury or death, or device breakage.

To prevent the serious results, ordinarily set the parameters so that the overheat

check is valid.

8. Items related to maintenance

Do not apply voltages on the connector other than those indicated in Connection and

Maintenance manual. Doing so may lead to destruction or damage.

Incorrect connections may damage the devices, so connect the cables to the

specified connectors.

Do not connect or disconnect the connection cables between each unit while the

power is ON.

Do not connect or disconnect any PCB while the power is ON.

Do not replace the battery while the power is ON.

Do not short-circuit, charge, overheat, incinerate or disassemble the battery.

Dispose of the spent battery according to local laws.

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