Mitsubishi Electric MV Series User Manual Download

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Power Supply, Control Specifications/Machine Installation

OB-PN
HBZ-U (N)
SBS-HN

Oki Electric Cable
Hitachi Cable
Sumiden Fine Conductors

Product Line-up

Functions and

eatures

Intelligent A

Opt Dr

e System

Long Lif

e System

Pow

er Supply

, Control Specifications

Machine Installation

Machining Samples

Precise Finish Circuit

Natur

al User Interf

ace

VANCE PLUS control

Options



Control unit functions



Power-supply/Control unit specifications

Year, month, date display

Overlap window function

Character string replacement function

Geometric function

Floating decimal point function

Control command

Corner R

Corner chamfer

Linear angle command

30-sec. short-circuit stop

Simultaneous 2-axis wire alignment

Workpiece inclination compensation

Reference block

Single block

Dry run

Automatic return

User macro

Automatic positioning (hole center, edge)

Automatic zero point return
Machining start hole return

Memory operation 1GB

Program edit

Coordinate rotation

Pattern rotation

Program no. designation

Expanded AT function

Graphics (drawing monitor)

Graphics (program check)

Graphics (automatic machining shape drawing)

Graphics (surface display)

Offset

Coordinate reading

Time reading

XY-axis independent scaling

Axis rotation

Automatic 2nd cut

Machining condition search

Block delete

USB flash memory

e-manual (electronic instruction manual)

Repeated positioning

Automatic power failure recovery
Workpiece coordinate system (106 items)

PM control

SL control

3D graphic check

Workpiece alignment

Axis exchange

Mirror image

Circumference calculation

Backlash compensation

Pitch error compensation

Soft limit (inside/outside prohibit)

Wire consumption estimate

CM3 control

OM control

3D viewer (Parasolid data display)

Sleep mode (MV-R)

Maintenance check

Automatic taper degree calculation

Status recording

Data variable operation

Alarm display

Machining time estimate

Built-in 2D-CAD/CAM

Built-in 3D-CAM

EM control

3D model compatible PM control (3D-PM)

Digital-AE

Control unit specifications

Compatible model

Power supply unit specifications

er-supply unit

Control unit

Regenerative transistor pulse type

Completely sealed/Indirect cooling

All modes

50A

9 types : Anti-electrolysis power supply

16 types
440 types
32 types
10 types
20 types
7 types
5 types
2 types

3 notches (changeable with M code or screen)

• Workpiece material: Steel, tungsten, copper, aluminum

• Applicable only for rough-cut conditions

Built-in

600 × 650 × 1765

(23.6 × 25.6 × 69.5)

240

(529)

Model
Power-supply circuit
Cooling method
Anti-electrolytic power supply
Maximum output current
Power-supply mode
Machine voltage selection
Machining setting
OFF time
Stabilization circuit A
Stabilization circuit B
Stabilization circuit C
Stabilization circuit E
FM circuit (LA, LC)

PM control

AVR
Unit dimensions (mm)

(in)

Unit weight (kg)

(lb)

Keyboard, USB flash memory, Ethernet

Touch panel, mouse

15" color TFT

Alphanumeric characters

CNC closed loop

Max. 4 axes simultaneously

X, Y, U, V, Z … 1/0.1µm

50nm (0.000050mm

(0.000002")

)

±99999.999mm

Combined use of increment/absolute values

Linear, circular, and spiral

0.00001 ~ 99.999999 (G code) 0.001 ~ 9999.999 (S code)

Automatic selection of machining speed according to gap voltage sensing

Reverse path retrace during short-circuit

±99999.999mm Offset numbers: 1 to 900 (intersection point calculation)

5 types (file, setup, machining support, monitor, maintenance)

Interactive screen method

1 to 6999

1 to 99999999

Nesting level 30

1 to 99999

Input on screen

High-speed, medium-speed, low-speed, ultra-slow speed, inching (0.0001mm/0.0005mm/0.0001mm) Positioning function, AT function
XY plane, XY-XZ plane, solid, table scaling, 3D model display, background drawing, automatic machining path drawing

1GB

Management of consumable parts (time display)

SL, CM, EM, OM, PM, BM

494 × 175 × 346

(19.4 × 6.9 × 13.6)

(excluding keyboard and mouse pad)

(44)

Model
NC program input method
Pointing device
Display
Display characters
Control method
Number of control axes
Setting unit
Minimum driving unit (mm)

(in)

Max. command value
Position command format
Interpolation function
Scale magnification
Optimum feed control
Path-retrace control
Wire offset
Basic screen menu
Automatic 2nd cut
Machining condition (E-pack) storage
Program number command
Sub-program
Sequence numbers
Manual input positioning
Manual operation box
Graphics
User memory capacity
Maintenance function
Adaptive control
External dimensions (mm)

(in)

Weight (kg)

(lb)

W31 (Advance control unit) Control Unit Functions

* Air (compressed air) is used to operate the automatic wire feeder and work tank door, etc. Air

supplied from a normal compressor contains various impurities that could cause operation faults if
they get into the pneumatic devices such as the solenoid valve. Install an air filter with a drainage
discharge mechanism, etc., in the air source (primary source) piping to prevent impurities from
entering the pneumatic devices.

Machine Installation Checklist

Determining the machining details

Installation Conditions

1) Determine the workpiece
2) Determine the machining site
3) Determine the pre-processing site
4) Determine the post-processing site

Confirmation of foundation and power-supply work

If there is any possibility of radio disturbance, investigate it prior to starting work.

1) Confirmation of floor area
2) Confirmation of environment (constant pressure, dust-proof room, measure for radio disturbance, prevention of external noise)
3) Confirmation of foundation floor
4) Foundation work
5) Primary wiring for power lead-in
6) Grounding work
7) Construction of dielectric fluid (city water) supply/drainage facilities
8) Air piping work

Confirmation of delivery path

1) Traffic restrictions to factory

Road width
Entry road

2) Factory entrance and width of gate in factory

Factory building entrance dimensions (height × width)

m × m

3) Constant-temperature, dust-proof room entrance dimensions (height × width)

m × m

Preparation of installation fixtures

1) Plan the installation fixtures
2) Prepare or manufacture the fixtures

1) Select the programmers and operators
2) Apply for training seminars

Preparation of consumable parts

1) Purchase consumable parts such as wire electrodes

Training of programmers and operators

Cautions
The standard delivery entrance dimensions for standard shipment delivery are given on the product
introduction page. If the entrance is smaller than the standard delivery entrance, the machine shipped
may have different dimensions.
Contact a Mitsubishi Electric sales office for details (a separate estimate will be issued).
Note that delivery may not be possible in some cases depending on the dimensions.

Precautions for Selecting Earth Leakage Breaker

To prevent malfunctions caused by the external noise from control units, etc., a filter
is installed for the power-supply input. By grounding one end of this filter, an earth
leakage current of approx. 30mA to 40mA passes through the filter. A highly sensitive
earth leakage breaker (sensitivity current 30mA) could malfunction. Thus, a
medium-sensitivity earth leakage breaker (sensitivity current 100mA to 200mA) is
recommended for the EDM. Class C grounding (grounding resistance of 10

or less)

is recommended for the wire-cut EDM. Even if the sensitivity current is 200mA, the
contact voltage will be 2V or less, and no problems will occur in preventing electric
shock (application of tolerable contact current Class 2, 25V or less).

Harmonic Distortion

If there is harmonic distortion in the power supply, the machine operation could be
affected even if the voltage does not fluctuate. In addition, the harmonic current could
flow from the wire-cut EDM to the power system and adversely affect peripheral
devices. If the effect of the harmonic distortion causes problems, install a harmonic
suppression filter or take other measures.

Disposal

The dielectric fluid, dielectric fluid filter, ion exchange resin, wire, etc., are industrial
waste. These must be disposed of following national and local laws and ordinances.

1. Installation site

Constant-temperature, dust-proof room

· Recommended room temperature 20±1°C

(68°F±2)

· Usable temperature range 5 to 35°C

(44°F to 95°F)

Temperature fluctuation will directly affect machine accuracy. To maintain
performance accuracy, select a place with minimal temperature fluctuation.
Install the EDM in a constant-temperature room when performing high precision
machining, even when using skim cuts.
Note that an environment where the temperature fluctuates by 3°C

(5°F)

or more

within 24 hours, or 1°C

(2°F)

or more within one hour can adversely affect

machining accuracy. Make sure that the machine body is not subject to direct
wind from air-conditioners or to direct sunlight.

· Dust-free location is recommended.

Grinding dust can adversely affect the machine's linear scales and ball screws.
Pay special attention to installation location to avoid this hazard (separate from
grinding machine, or install in separate room, etc.).

· Humidity Within 30 to 75%RH (with no dew condensation).

· Temperature range during transportation and storage

-25 to 55°C

(13°F to 131°F)

(when power is not connected).

Tolerable vibration of floor

· Select an floor where vibration or impact will not be conveyed.

· As a reference, the vibration level should have a max. amplitude of 2µm or less at

a 10 to 20Hz frequency.

· Consult with the contractor or vibration measuring instrument maker for details on

the measuring method.

Foundation

· The floor should be concrete with a thickness of 400mm

(15.7")

or more so it can

sufficiently withstand the system’s weight.

· The floor inclination (step) must be within 6/1000 (floor inclination 6mm per 1m)

(MV2400 Series).

2. Machine heating

• Approx. 8,140W of heat is generated per machine, of which 1,512W is heat

generated by the dielectric fluid control unit.

• Take this into consideration when studying air-conditioning requirements.

3. Power-supply equipment

• Primary wiring 3-phase 200/220VAC±10% 50/60Hz±1Hz
• Power capacity

10.0kVA (during normal use) (when using

0.2

(.008")

mm wire electrode)

13.5kVA (when using the maximum)

* Use a 14mm

or thicker cable for the primary connection.

4. Grounding work

Wire-cut EDMs must always be grounded to prevent external noise, radio
disturbance and earth leakage.
Class C grounding (grounding resistance of 10

or less) as set forth in the

Electric Facility Standards is recommended for Mitsubishi Electric EDMs.

· Class C grounding (isolated) is recommended (Wire-cut EDM dedicated

grounding) (Fig. 1).
Note) Provide isolated grounding for each machine.

· Common grounding can be used if noise from other devices will not enter through

the common grounding; the grounding cable must be connected independently to
the grounding location (Fig. 2).

· Use a 14mm

grounding wire.

5. Primary air equipment

• Hose diameter : 1/4 hose (hose sleeve outer diameter: ø9.0

(0.35")

)

• Pressure : 0.5 to 0.7MPa

(70 to 100psi)

• Flow rate : 75L/min or more

(26cu.ft./min.)

6. Shield room

Install a shield room if a wire-cut EDM affects televisions or other communication
facilities in the area. Observe the following points when installing the wire-cut
EDM in the shield room.

1. Ground the EDM in the shield room (Fig. 3).
2. If the EDM cannot be grounded in the shield room, connect the wire-cut EDM's

grounding cable to the shield room's grounding terminal (through bolt) as shown
in Fig. 4.

3. Consult with with a Mitsubishi Electric representative for details on installing a

shield room.

Power-supply unit

Machine body R

S
T
E

Power-supply unit

Machine body

Grounding cable

for other device

R
S