"G" Series Shockless Type Solenoid Operated / Solenoid
Controlled Pilot Operated Directional Valves

Patent Number

1775681

The shifting time of conventional Solenoid Operated, Shockless, andDirectional Valves is constant and cannot be adjusted.
The G-Series Solenoid Operated Directional Valves incorporate electronic circuits
enable adjustment of the spool shifting time, it can be set at an optimal level tominimise shocks to the machine.

1

G−DSG−01

Reduces oil hammering during spool changeover.
Conventional Type

G-Series ValveWWOil Hammering

SOLON

Solenoid Valve
P2T●No vibration●No oil leakage●EnhancedImprovement
SOLON

Pipingvibration

Machinevibration

Oil leakage

Large machining
errorsmachining accuracy

G−DSHG−04
PT

Graphic Symbols

Reduces shock caused by acceleration and deceleration
Conventional Type● G−DSG−01/03● G−DSHG−04/06

3C2

3C2

G-Series Valve

Jerk at start up

A

Slow startBabP

No shaking

Sudden stop, causing shock

Slow stop

Shaking

StillA

TX

3C40b

P

Pb
Y

Ba

BaT

3C40

Improvement

AA

BPTab

T

Y

No shaking

X

2B7
Stopping accuracy enhanced

Model Numbers

G−DSG−01−＊−＊＊＊−＊−5110203040

G−DSG−03−＊−＊＊＊−＊−51406080

G−DSHG−04−3C＊−＊−＊−＊−50160

G−DSHG−06−3C＊−＊−＊−＊−50250

BPTb■ Specifications
Max. Flow
L/min

A

Max.
Max. T-Line Pilot Pressure
Shifting Time Range
Pilot Flow
Operating
Back
MPas
L/min
PressurePressure
Max. Min. at Normal at Transition for ONfor OFF
MPa
MPa

Masskg3C＊ 2B725

16—

——

—

0.1 - 1

3

2.1

25

16—

—

—

—

0.3 - 1

7.5

5.325

1616

1.5

14

0.06 - 1.5

0.1 - 212—

16

0.1 - 1

0.2 - 215—

● Electrical Specifications
Model Numbers
G−DSG−01−＊−＊＊＊−＊−51
G−DSG−03−＊−＊＊＊−＊−51
G−DSHG−04−3C＊−＊−＊−＊−50
G−DSHG−06−3C＊−＊−＊−＊−50

Electric Power Supply
Voltage
24 V DC(21 - 28 V DC Included Ripple)
Use a stable power supply

Shifting Signal, low speed operation halt signal（HALT）

Input Power

36 W

Voltage

Current

Input Interface

Constant at
5 - 48 V DC
10 mA
(Can be used in common
Sink Type, Source(A constantwith electric powerTypesupply)
current circuit is
Use a stable power supplyused)—— For details of “G ” Series Shockless Type Solenoid Operated / Solenoid Controlled Pilot Operated Directional Valves, please contact us. ——E-94“G ” Series Shockless Type Solenoid Operated / Solenoid Controlled Pilot Operated Directional Valves

DIRECTIONAL CONTROLS■ Model Number Designation

−01
−04

−10—

Series NumberValve
Size

Metered Flow
Capacity

G−DSG：“G ” Series ShocklessType Solenoid
Operated DirectionalValves(Sub-plate MountingType)

01

03

3C2
3C40

None ：30L/min
10：10L/min
20：20L/min

2B7

None ：80L/min
40：40L/min
60：60L/min

3C2
3C40

06

—−R2−S−S−51−50−L—

Input
Interface

DesignNumberModels withreverse mtg.
of solenoid

51
——

——

None：Sink Type(Standard)

2B7
None：Internal
PilotＥ：
External
Pilot

04
——

—−E

Spool Type
Pilot
Input only for options（Refer to Graphic
Connection
belowsymbols）

None ：40L/min
10：10L/min
20：20L/min

None ：60L/min
40：40L/min
G−DSHG：“G ” Series ShocklessType Solenoid
Controlled Pilot
Operated Directional
Valves(Sub-plate Mounting Type)

−2B7
−3C2

3C2
3C40

■ System Diagram (Example of sink type wiring)

R2：With Stroke
Adjustment, Both Ends
RA：With Stroke
Adjustment, Port "A" EndRB：With Stroke
Adjustment, Port "B" EndＬ：
Input only forreverse mtg. ofsolenoid.
(Only for 2B7)
A51

Ｓ：SourceTypeBab
P T50——50■ R elationships between SOL signals
and flow patterns● Without HALT functions

Deceleration
Start Signal

ProgrammableController

A B
P T

Patternof Flow

Shifting Signal

HALT+SOL a－SOL b

OFF T(Max. 1s)

(Max. 1s)

DC Power
Supply24VDC

A B

OFF ADJON TONSOLa

P T

OFF ADJOFFON T

OFF T

(Max. 1s)

(Max. 1s)

ONOFFSOLbE“G ” Series Shockless TypeG−DSG
G−DSHGOFF● With HALT functions
A B

Adj. Volume "OFF ADJ"(SOL a Side)
Adj. Volume "ON T"(SOL a Side)
Adj. Volume "OFF T"(SOL a Side)

Adj. Volume "MIN"
USB MICRO-B Connector
Output Current Check (to 0V)

Adj. Volume "OFF ADJ"(SOL b Side)

Patternof Flow

Adj. Volume "OFF T"(SOL b Side)

OFF
ADJ
ON T
(Max. 1s)

Adj. Volume "ON T"(SOL b Side)

SOLb
HALT

A B

Max.
600s

P T

OFF T
(Max. 1s)

ON

SOLa

MIN★

MIN★

P TOFF
OFFOFFOFFADJ

ON T

OFF T

(Max. 1s)

(Max. 1s)

Max.
600s

ONON

Hold for 0.1 second or longer

ONOFF

Hold for 0.1 second or longer★ The minimum adjustment volume is common for SOL a andb, and it is not possible to set a different volume for each SOL
a and b individually.
If the HALT functions are not used, set the minimum
adjustment volume to zero.

“G ” Series Shockless Type Solenoid Operated / Solenoid Controlled Pilot Operated Directional Valves

E-95

■ Interchangeability between Current and New Product“G ” Series Shockless Type Solenoid Operated Directional Valves have changed models from 50 design to 51 design by installation of new amplifier.
Current Model Numbers

New Model Numbers

G-DSG-01-＊-＊＊＊-＊-50

G-DSG-01-＊-＊＊＊-＊-51

G-DSG-03-＊-＊＊＊-＊-50

G-DSG-03-＊-＊＊＊-＊-51● Major Changes
Use newly developed Digital Control Amplifier.

● Interchangeability
Adjusting trimmer is inherited from the current model. Same as on the current model, trimmer adjustment allows to modify the time of spool
switching in accordance with the machine.

● New Functions
USB MICRO-B connector has been added and adjustment on PC using specialized software made available.
Making minute adjustments and readjusting has become easier compared to current model. Copying of set adjustment value made available. Thereis a maintenance function that allows to check working conditions of the valve such as solenoid current value and operating time on PC.

● Interchangeability in Installation
Yes● Comparison between Current and New
No changes in specifications, characteristics, dimensions, installations, connecting terminal and trimmer arrangement.
USB MICRO-B connector has been added to the on-board amplifier.

Added USB MICRO-B Connector
Adjusting Trimmer (Same as current model)

E-96“G ” Series Shockless Type Solenoid Operated / Solenoid Controlled Pilot Operated Directional Valves