Specifications

Machining Samples
Adaptive machining control: GF2 control
• The electrical-discharge state during rough machining is optimally
controlled to realize ultralow-wear machining
(Note) The length wear ratio will differ according to the type of graphite
electrode, machining details and machining conditions.
Adaptive machining control: GF2 control + Fuzzy control + SS Jump 3
• Rough machining can be stabilized and the speed increased by
using these controls together with the jump control
Ultralow-wear machining
High-speed, deep rib machining
Reducing electrode loading and stabilizing machining
Large-area Machining
Suppressing displacement movement caused by room temperature changes
Thermal displacement compensation function (standard for all Advance models, MA2000 and EA medium-to large-sized models)
Example of die cast mold machining
The graphite electrode is used effectively to attain high
productivity even during electrode fabrication.
GF2 control realizes stable machining and eliminates
excessive wear of the electrode when machining with a
graphite electrode.
• Changes in room temperature around the machine are recognized and
compensated for in real-time
• The machining accuracy during long-time continuous machining is
dramatically improved 
• This function's effect is further improved by using the fluid circulation
function during setup
Machining stabilizing jump control: SS Jump 3 (standard for all models)
• This control is effective during jump up operations for flat electrodes on
which a large load is applied for large electrodes
• The load on the electrode is reduced by optimized smoothing of the
jump movement, thereby stabilizing machining and increasing the
speed
• High-accuracy machining can be maintained by reducing the load onto
the Z-axis (spindle)
Model EA28V Advance
Workpiece material SKD61
Electrode material Graphite
Surface roughness Rz: 15μm Ra: 2.4μm
Machining time 53 hours
Example of pocket machining
Model EA28V Advance (GF2 control)
Workpiece material
SKD61
Electrode material 1 graphite electrode
Machining depth 50mm (2.0")
Surface roughness Rz: 11μm Ra: 1.9μm
Electrode wear Length wear ratio 0.04%
Machining time 7 hours 6 minutes
(Electrical-discharge machining after rough milling.)

150mm
Displacement
［μm ］
Temperature
［℃］
06
Time［hour］
12
Without thermal displacement compensation
With thermal displacement compensation
Temperature changes
Stable machining accuracy 
and high repeatability
Position
Generated
negative pressure
Jump direction
Time
Without SS Jump 3
With SS Jump 3
Jump up
Z-axis
load
Time

Stabilize machining 
with a large electrode
Attaining a length 
wear ratio of 0.04%
Machining speed 
increased by 10 to 20%
Electrode wear 
improved by 10 to 20% 
（comparison with conventional Mitsubishi Electric EDM）
Machining time（min）
0
10
20
30
40
50
100 200 300
Without GF2
With GF2
Graphite electrode
Tip 1mm, taper 1°, step machining 10mm
Example of rib machining
with graphite electrode
Example of machining a large flat area
Realizing a uniform surface finish even on flat
surfaces.
Model EA28V Advance
Workpiece material SKD61
Electrode material Graphite
Realizing high speed when machining deep or
large workpieces.
Example of machining large molded dies
Model EA40+FP100
Workpiece material S55C
Electrode material Graphite
Surface roughness Rz: 18.0μm
Example of thin-rib machining
Stable machining and low-
wear machining are
realized for thin-rib
machining.
Stable machining of deep workpieces
(130mm), for which fluid treatment is
insufficient, is possible
(electrical-discharge machining after
rough milling).
Example of deep workpiece machining
SS Jump 3
FIT control
Shape expert
GF2 control
Fuzzy control
FP-V
power
supply
FP-V 
power
supply
Conventional technology
New technology (GF2)
FP-V power Control unit
Optimally controlling the electrical-discharge state
Model EA28V Advance (GF2 control specifications)
Workpiece material SKD61
Machining depth 130mm
Electrode material Graphite
Surface roughness Rz: 10μm Ra: 1.6μm
Model EA12V Advance (GF2 control)
Workpiece material SKD11
Electrode material
3 graphite electrodes (tip 0.2mm) 
Machining depth 6mm (0.2")
Surface roughness Rz: 6.0μm Ra: 1.0μm
Machining time 1 hour 36 minutes
Z-axis jump path
Jump down
Electrode-to-
workpiece
pressure
Ultrahigh-performance Machining with Graphite Electrode
GF2 control (option for all Advance models)
High-speed jump
Machining depth（ｍｍ）
When machining the die for die-casting parts, such as
automobile engine cases, tall workpieces are machined
with a complex and complicated electrode.
To maintain stable machining, the effect of changes in
the environmental temperature must be suppressed to
a minimum.
7 8
Product Line-up Machining Samples
Total Solutions
Machine Specifications
and Options
Advance Series
Functions and Features
EA Series Functions
and Features
Advance Series
Product Introduction
MA, EA Series
Product Introduction
Advance Control Unit
Tooling
64-bit Control Unit
Power Supply/Control
Specifications
Preparation for
Machine Installation
Precautions