Daikin EHU Series User manual

【INSTRUCTION MANUAL】
DAIKIN INDUSTRIES, LTD.
SE-04430
Hybrid Hydraulic System
“ECO RICH”
EHU SERIES
Instruction Manual
DAIKIN INDUSTRIES, LTD.
Oil Hydraulics Division
《Photo： EHU25-M07-AE-30》
・This instruction manual is based on these following types Eco Rich.
As for MGF.NO. before them, there is some difference in operating manual of
the panel and adjusting method.
□ EHU14-L04 -A -30 ：MFG.NO. 3C-＊＊-＊＊＊＊＊
□ EHU25-L04 -A -30 ：MFG.NO. 3C-＊＊-＊＊＊＊＊
□ EHU25-L07 -AE -30 ：MFG.NO. 3D-＊＊-＊＊＊＊＊
□ EHU25-M07-AE -30 ：MFG.NO. 3D-＊＊-＊＊＊＊＊
□ EHU30-M07-AE -30 ：MFG.NO. 3D-＊＊-＊＊＊＊＊
１

【INSTRUCTION MANUAL】
DAIKIN INDUSTRIES, LTD.
SE-04430
《SAFETY PRECAUTIONS》
■Before Usage
・To ensure to notify these contents of this document for user.
・Add this contents to your machine’s handling manual which uses this product.
・Before installation, operation or maintenance, read thoroughly this handling manual and other attached documents
and learn equipments knowledge, safety information and attentions, then use this product properly.
・To ensure keeping this manual, attached documents and supply specifications and so on, whenever user enable read
these documents.
・So all figure or photo in this manual are sometimes drawn the state of removing the cover or safety insulate object to
explain details, which you operate surely put the cover or insulate object as it was before and operate following this
manual.
・This manual may be changed for improvement of the product or alteration of specifications or improve this manual
more easily.
・This document is about safety handling of our hydraulic unit. Prepare date for safety handling according to the
standard for safety operation or maintenance of your machine.
■Symbols of safety precautions in this manual
・In this manual, safety precautions are represented and classify 3 rank, “ Danger”, “ Warning” and
“ Caution”.
Danger: If you ignore this symbol and handle improperly, it may pose a high risk of causing death or serious injury.
Warning: If you ignore this symbol and handle improperly, it may pose the risk of causing death or serious injury.
Caution: If you ignore this symbol and handle improperly, it may pose the potential risk of causing injury or damage
to the product or property.
Although the matter is mentioned in “ Caution” symbol, there will cause serious result.
Be sure to observe these precautions.
■Safety
◆ General
２
Danger
・Qualified people perform the task such as transportation, installation, piping, wiring, operation, handling,
maintenance, and inspection.
・When working, make use of protective tools (uniform, safety belt, helmet, safety shoes, gloves, etc).
・Do not use another specifications which is mentioned in the catalog, or delivery specifications.
Caution
・Be sure to enforce daily inspection (it is mentioned in this document, or in attached document.)
・Do not stand, beat or add pressure on the products, or you may be injured and the product is damaged.

【INSTRUCTION MANUAL】
DAIKIN INDUSTRIES, LTD.
SE-04430
《Exemption Clause》
・Damages owing to earthquake, fire, and action of the third party, other accidents, intentional or negligence,
misuse of customers, use under unusual conditions we would exempt from any responsibilities.
・Incidental damages (loss of business profit, business suspension) owing to usage of this product, or impossibility
of usage, we would exempt from any responsibilities.
・Accidents and damages caused by disobeying manuals or supply specifications, we would exempt from
any responsibilities.
・Damages caused by wrong working owing to combination of connecting equipment, we would exempt from
any responsibilities.
《Limitation of uses》
・Make sure to consider the situation, in case of life threatening owing to breakdown or wrong working of this
machine, or possibilities of danger to the human body.
・Though, this product manufactured under strict quality control, in case of using important equipment, to prevent
serious accident or damage from failure of this machine, install safety equipment.
３
《Additional function along with the software change》
・Since these parts may be changed in the quality, performance improvement or other circumstances, the contents
of this manual are sometimes partly different from the product. Please understand it.
・It is able to confirmed about the function of Eco Rich in use by the unit name plate.
Refer to the table that is attached to the end of this document for corresponding function.

【INSTRUCTION MANUAL】
DAIKIN INDUSTRIES, LTD.
SE-04430
－Table of contents－
【1.Preface】 －－－－－ 5
【2.Nomenclature】 －－－－－ 5
【3.Specifications and operating conditions】 －－－－－ 6
【4.Name of parts】 －－－－－ 7
【5.Hydraulic circuit】 －－－－－ 8～9
■ Hydraulic circuit
■ Parts
■ Piping
【6.Points for transporting, moving and installing】 －－－－－ 10～11
■ Operating
■ Transporting
■ Installation
【7.Preparation for operation】 －－－－－ 12～15
■ Filling hydraulic oil
■ Electric wiring
【8.Test run】 －－－－－ 16
【9.Operating manual of the control panel】 －－－－－ 18～23
■ General description
■ Explanation of each mode
■Shift to each mode
■ Operation manual of each mode
【10.Maintenance】 －－－－－ 24～28
【Attached document A】Change points of the PC setup pressure －－－－－ Att. 1～Att. 10
1) The PC pressure change point of the standard valve block (Fixed setup pressure relief valve)
2) The PC pressure change point of the variable relief valve. (Model : EHU**-***-**-30-v)
【Attached document B】Power supply turning on,a time chart related to alarm －－－ Att. 11～Att.13
【MFG No. function table】 －－－End of the document
４

【INSTRUCTION MANUAL】
DAIKIN INDUSTRIES, LTD.
SE-04430
【1.Preface】
Thank you for choosing the “Eco Rich” series of DAIKIN hybrid hydraulic system.
DAIKIN hybrid hydraulic system, “Eco Rich” realized overwhelming energy-saving and low noise by adopting
hydraulic technology and motor-inverter technology, and they are gentle hydraulic system for men and
environment.
When using “Eco Rich: EHU series”, manage proper handling and maintenance after reading this manual
thoroughly to cross for a long time and to keep good performance.
Approve it in case the contents of this manual are sometimes partly different from the product because of the
change of the parts according to the improvement of quality, performance and other circumstances.
【2.Nomenclature】
５
（ａ） （ｂ） （ｃ）（ｄ） （ｅ）（ｆ） （ｇ） （ｈ） （ｉ）
MFG.NO.
※※ －※ ※※ －※ ※ －３０ －※－※※※※
（ｊ）（ｋ）
３ ※ －※※－※※※※※
（ｌ）
ＥＨＵ
（a）Series name
･EHU: EHU Series
（b）Max.discharge flow rate of the pump
･14: 14 L/min.
･25: 25 L/min.
･30: 28.5 L/min.
（c）Output characteristics
（right figure reference）
･L
･M
（d）Max. working pressure
･04: 4.0MPa
（the part of Model 5.0MPa）
･07: 7.0MPa
（e）Control method
･A: pressure compensate
（f）Controller specification
・E : with reactor
・Nothing : without reactor
（g）Design NO.
･Progress according to the product
has been changed.
（h）Option NO.
・Nothing: With fixed relief valve
・V : With Variable relief valve
（i）Non-standard NO.
（j）Design NO.
･3: 30 design
（k）Progress NO. of design change
･0～9、A～Z such as progress
（l）Administration of manufacture NO.
･Administration NO. of our factory
《Output characteristics 》
Pressure
０
F
l
o
w
〔Characteristics ：Ｌ〕
Pressure
０
Flow
〔Characteristics ：Ｍ〕

【INSTRUCTION MANUAL】
DAIKIN INDUSTRIES, LTD.
SE-04430 ６
【3.Product specifications】
■Specifications
EHU14－L04 EHU25－L04 EHU25－L07 EHU25－M07 EHU30－M07
－A－30 －A－30 －AE －30 －AE －30 －AE －30
(L)
0.75 kW nearly 1.5 kW nearly 2.2 kW nearly 2.8 kW nearly 2.8 kW nearly
(MPa) ６.０
(L/min) ４～１４ ５ ～２５ ５～２８．５
(N) ４５０ ４６０ ４６０
Capacity for fan motor of the oil cooler
Motor capacity for the pump
DC １２／２４ V 、 AC １００ V（５０／６０ Hz）、Max.１Ａ
Black
５～２５
2φ200/200/220 V、50/60/60 Hz（Supply from controller）
７.０
Control stop signal
Standard painting
Power
source
Relay for alarmoutput
Motor of the pump
Fun motor of the oil cooler
Weight (without hydraulic oil)
Tank capacity
Max. working pres sure
Discharge flow adjusting range
１０
16/15W (50/60Hz)
3φ200/200/220 V、50/60/60 Hz
No-function DC 24V (Rate 5mA)
４.０
４３０
：PC setup pressure is set up in the Max. working pressure at sipping. (standard products).
When it is used continually Max. working pressure, use it less than of flow 5.0 L/min.
When there is the possibility to change PC pressure, use the equipment which has option NO. ”V”.
The change of the PC pressure becomes easy ( the setup pressure is 1.5 MPa at sipping).
：It is preset to be Max. flow at sipping.
（Max. flow is theoretical value, and it is not by the guarantee value.）
：Refer to the table of 20-page b) Setup mode ,and that’s column of the initial setup value, for a setup of
alarm at sipping.
◎As for other specifications, confirm a delivery specifications. (form drawings)
（Note 1）
（Note 2）
（Note 3）
(Note 1)
(Note 2)
(Note 3)
■Working condition
Hydraulic oil Petroleum series of specific hydraulic oil / anti-wear hydraulic oil
（Refer to our [General Sample of Hydraulic Machinery (HK196A )] to see the recommended
brands.)
・Viscosity grade ：ISO VG 32~ 68
・Viscosity rangade ：15 ~ 400 mm /s
・Contamination level ：within NASclas s１０
０ ～ ６０ ℃ （recommended workin
g
tem
p
erature ran
g
e：15~50 ℃）
（note ２）
０～３５ ℃
Below 85%RH
Indoor （must be fixed by screws）
・be sure to install no-fuse-breaker and circuit breaker.
・The electric wire connecting is wired to satisfy an European standard EN60204-1.
･Do not turn ON/OFF the power frequently, it may cause remarkable short life of the
c ontroller. Use the stop control function, in case of using this condition in the fre qu
e
・As for EHU**-L04 does not equipped with the control stop function in standard.
Please consult us if necessary.
・Ground (earth) terminal must be down to ground.
Oil temperature
Environment temperature
Humidity
Installation place
Others
2
Note 1) Do not use any hydraulic fluid other than mineral type (hydrous or synthetic) hydraulic oil (like water-
glycol).
Note 2) In case of using except recommended working temperature range, it may cause large pulsatory motion
of pressure or reduce discharge volume , but it is not abnormal.

【INSTRUCTION MANUAL】
DAIKIN INDUSTRIES, LTD.
SE-04430 ７
【4. Parts name】
(The arrangement of the standard port is shown. Refer to the form drawing and the delivery specifications for
the non-standard products.)
Controller
Unit name plate
Notice name
plate
Oil inlet port with air
breather
Tank
Sample port with drain cap
Oil gauge
Valve block
Front view of the unit
SR motor and pump
Drain port (DR 1)
Rp 1
Top view of the unit
Drain port (DR 2)
Rp 1/2 Return port (T1)
Rc 1/2
Return port (T2)
Rc 1/2
Discharge port (p)
Rc 3/8
Oil cooler
Eye bolt

【INSTRUCTION MANUAL】
DAIKIN INDUSTRIES, LTD.
SE-04430 ８
■Parts
【5. Hydraulic circuit】
■Hydraulic circuit
Part NO. Name
1 Tank
2 Suction filter
3 Oil gauge
4 Inverter driving pump
5 Oil inlet port with air breather
6 Oil cooler
7 Controller

【INSTRUCTION MANUAL】
DAIKIN INDUSTRIES, LTD.
SE-04430
【6.Points for transporting, moving and installing】
・Though the vibration absorbed rubber is attached to the leg of the motor pump because of the low vibration and
low noise. It is fixed with a hexagon socket bolt (2 of M6 x L35) as to protect the vibration absorbed rubber
from transport vibration countermeasure at shipping.
■Operation
・Before operation, remove the hexagon socket bolt (2 of M6 x L35).
If it is operated without removing these bolts, it may cause loud vibration and noise.
■Transporting
・When it is being transported, install the spacer which
protect the vibration absorbed rubber with hexagon socket
bolt (2 of M6 x L35), and fix the motor pump and the tank
upper board securely. (Refer to the below figure.)
Be sure to suspend it with eyebolt.
In this time, move the unit carefully about balance so as
not to be damaged the piping by the hook.
Eyebolt
Detail of spacer
( 2 places )
Type
Weight
EHU14-L04 EHU25-L04 EHU25-L07 EHU25-M07 EHU30-M07
43kg 45kg 46kg
Weight table (hydraulic oil in not included)
９
Danger
・If the vibration absorbing rubber is suspended without spacer for its protection, it is dangerous that the
vibration absorbing rubber may break off and fall.
・In case that it is suspended except for the eyebolt (pump piping), it is dangerous to fall and turnover.
・Confirm the weight of the hydraulic unit, and suspend it within the rated load of the hanger-hook.
Warning
・Never approach during carry by hanger-hook. There is danger of injury due to fall and turnover.
Caution
・Do not move the tank with filling oil. (The oil leaking and air-mixing will cause inferior operation.)
・During transportation, be sure to fix it so that it may not be moved by vibration and another force.
Spacer
vibration
absorbed rubber
Hexagon socket bolt
(M6 x L35)

【INSTRUCTION MANUAL】
DAIKIN INDUSTRIES, LTD.
SE-04430
◆ Installation on horizontal place
・Install the hydraulic unit on the horizontal table or the
horizontal floor.
Fix the hydraulic unit with bolts (4 of M8) not to move.
Exhaust
Inhalation
Inhalation
More than
10cm
１０
Warning
■Points for installation
◆Securing of space of inhalation/exhaust
Do not put the obstacle that disturbs inhalation/exhaust
of the oil cooler within 10cm from the end of the unit.
Moreover, install it in the good ventilation so that the
unit may not be filled with heat, and be careful that
temperature of inhalation becomes fixed
surrounding temperature (less than 35℃).
・When it is used in where there is no space of inhalation/exhaust, and heat place, the heat exchange function
of the oil cooler/fan motor declines, and finally, oil temperature and temperature of the hydraulic equipment
becomes unusual high temperature.
・In case of touching high temperature part, you may be burnt.
Caution
・When it is used in where there is no space of inhalation/exhaust, and heat place, the motor becomes high
temperature, and the life of the motor will be shortened apparently.
・When the motor becomes high temperature, temperature protection suspends its operation.
(In case “P02: temperature alarm output setting”is “1”(as output), alarm signal are outputted.)
・If using under high temperature condition continuously, it causes troubles and shorten the life of the
hydraulic equipment such as the motor pump.
・If using under high temperature condition continuously, it makes the quality of the hydraulic oil lower, and
shorten it’s life.
Unit mounting hole φ9 (4 positions)
( Please prepare for fixing bolt separately by customer side.)
Warning
・If the hydraulic unit is not fixed with bolt, it is dangerous because of falling down and moving around by
the hydraulic reactive force in the pipes, so the unit must be fixed.
Caution
・In case it is installed in the slope, there will be oil-leaking and air-mixing cause unusual noise and shorten
equipment’s life.

【INSTRUCTION MANUAL】
DAIKIN INDUSTRIES, LTD.
SE-04430
【7.Preparation for operation】
■Piping
・Since this hydraulic unit is provided with two return ports (inside oil), two drain ports (upper oil surface) and
one discharge port, piping them if necessary.
All the piping port is capped with taper cap (vinyl cap).
Bind the piping with seal tape.
◎Oil inlet port with air breather
◎Yellow line（Upper limit:10.0L）
◎Float
◎Red line（Lower limit : 7.4L）
■Filling hydraulic oil
・Remove the oil inlet port with air breather to turn counterclockwise, and put pure hydraulic oil (within
NAS 10 class) in the tank.
The oil volume should be kept that the float of the oil gauge is between the red line and the yellow line.
Use the hydraulic oil appropriate to the specifications as it was mentioned in page 6.
◎Drain port（DR1 : Rp1）
Upper oil surface
◎Discharge port（P : Rc3/8）
◎Drain port（DR2 : Rp1/2）
Upper oil surface
◎Return port (T1 : Rc1/2）
under oil surface
◎Return port (T2 : Rc1/2）
under oil surface
１１
Caution
・If it operates without putting oil in the tank, burnt and abrasion occur in the pump body, and it may be
damaged.
・Since oil is supplied to the hydraulic circuit on the machine at the initial operation of the machine, be
careful of the oil decrease inside the tank.
・The oil level inside the tank will vary a lot with the different hydraulic circuit on the machine, be careful
that if the oil is overflowed from the tank or the oil level is lower than its usual level.

【INSTRUCTION MANUAL】
DAIKIN INDUSTRIES, LTD.
SE-04430
■ Electric wiring
Be sure to carry out electric wiring in accordance with the terminal wiring diagram (below figure).
Terminal box cover
Screw for tightening cover
（M4 Cross-Recessed Screw x4）
［Tighten torque : 1.0N・ｍ］
Wiring diagram (EHU25-M(L)07)
As for EHU**-L04 does not equipped with
DIGITAL I/O terminal.
Please consult us if necessary.
１２
Danger
・To protect the electric circuit and prevent electric shock, install the safety device such as a no fuse breaker
or a ground-fault interrupter on the main power source of the hydraulic unit so as to be based on the
European standard (EN60204-1).
(Refer to below table for the capacity of each machine)
・In order to release the leakage from inverter circuit, ground (earth) terminal must be down to ground over
the third class. (Connect it directly not to pass through the breaker)
・Wire after installing the machine surely.
・Be sure to turn off the breaker of the main power source and confirm that the power source was interrupted
before the wiring,
・Do not connect the supply line to the input and output terminal.
・Never add the excessive power voltage beyond its specifications of the hydraulic unit
Caution
・Since this hydraulic unit has protect-over current function built in, thermal for protect-over current function
is not necessary.
・In case of using thermal, it may work wrong way by the inverter switching.
No fuse breaker
Setup value
EHU14-L04 EHU25-L04 EHU25-L07 EHU25-M07 EHU30-M07
3φ200V 50Hz
１５Ａ １５Ａ １５Ａ １５Ａ １５Ａ
3φ200V 60Hz
3φ220V 60Hz
７．３Ａ
７．０Ａ
７．３Ａ
７．９Ａ
７．９Ａ
７．５Ａ
５．７Ａ
５．７Ａ
５．３Ａ
９．１Ａ
９．１Ａ
８．５Ａ
９．６Ａ
９．６Ａ
８．７Ａ
[Rated current in type]
Wiring port
※This diagram shows power OFF condition
(alarm condition).
[COM－ALMa] Normal: closed Abnormal: opened
[COM－ALMb] Normal: opened Abnormal: closed
Rated current

【INSTRUCTION MANUAL】
DAIKIN INDUSTRIES, LTD.
SE-04430
・Use alternating current (AC) which is suitable for the power source specifications of the product.
・Use the electric wire which is suitable for AWG14 (2sq~2.5sq).
・Do not connect the power source wire (L1,L2,L3) to earth connection point of power source terminal.
・The earth connection point is connected with the motor frame, and ground the earth over the third class
ground.
・Be careful not to damage the conductor when stripping electric wire.
・Be careful not to stick out the conductor of wiring from the terminal stand.
● The wiring of the main power source
(1) Wire the electric cable through the wiring port of the terminal
box. Use the wire and the cable clamp to be suitable for the
wiring port that satisfies protection grade over IP54.
[Recommended cable clamp : Laap Co.,Ltd. made ST16]
[screw size : PG16]
(2) Connect the earth line to the earth terminal of the terminal
stand for power source.
(3) Connect power source line to terminal stand (L1,L2,L3) of the
power source. (There is not polarity.)
Refer to the below figure to connect with the terminal board.
(4) After wiring, be sure to install the cover of the terminal box as
it was.
①Insert special driver or precision driver (width
2.4~3mm) as left figure.
②Make sure of stripped wire length, and insert
them until the end without separating.
③Pull special driver out.
④Make sure of wiring by pulling the electric wire
slightly.
How to connect the power source wire to the
terminal stand board.
Terminal stand for
power source
Stripped wire length: 9mm
9mm
◆Wiring point
When wiring the main power source and the alarm output signal wire, the cover of the terminal box has to be
removed.
《Removing the cover of the terminal box by loosening the cross recessed screw (M4) that installed on the cover.》
１３
Danger
・In case of preventing end of the wire from separating, treat its end with solder or use the below mentioned
crimping terminal with insulated sleeve. (Refer to maker’s catalogue “WAGO made” for handling them.)
For 2 sq：216-205 yellow
For 2.5 sq：216-206 blue
Press tool：206-204 Bio- crimp
Special driver：WAGO made 210-257 or 210-350/01 etc.
(Terminal stand: WAGO made 745series)
Caution
Wiring port for power source
Wire insert port
Special driver
Refer to page 12, ”wiring diagram” as for the arrangement of the terminal board.

【INSTRUCTION MANUAL】
DAIKIN INDUSTRIES, LTD.
SE-04430
Terminal stand for
alarm signal
Pushing direction of the lever
●The wiring of alarm signal line-----It is able to transmit the signal of the abnormal condition and operation of the
pressure switch that is outputted from this hydraulic unit.
(The hydraulic unit can be operated without wiring.)
１４
(1) Wire the electric cable through the wiring port of the
terminal box. Use the wire and the cable clamp to be
suitable for the wiring port.
[Recommended cable clamp : Laap Co.,Ltd.made ST9]
[screw size : PG9]
(2) Confirm the terminal wiring diagram on the cover of the
terminal box, connect to the alarm signal connection on
the terminal stand for power source.
*This diagram shows power OFF condition.
(alarm condition)
(3) After wiring, be sure to install the cover of the terminal
box as it was.
[COM－ALMa] Normal: closed Abnormal: opened
[COM－ALMb] Normal: opened Abnormal: closed
Danger
・Use the electric wire, cab tyre cable with shield which is suitable for AWG22 (0.3sq).
・Be sure to treat the end of shield cable properly, and ground the one side.
・Do not connect the alarm connect line to the terminal stand for power source.
・Be careful not to damage the conductor when stripping electric wire.
・Use DC24V or DC12V (minimum load-current 10mA) for alarm connection circuit.
Use AC100V (50/60Hz) under alternative current control.
(As for AC200V, it is not able to use in specification of voltage-resistance and insulation distance.)
・Use it under the maximum load-current less than 1A (load resistance).
・Be careful not to stick out the conductor of wiring from the terminal stand.
・As for alarm output signal connect “ALMa” and “COM” of wiring diagram at normal operation.
・In case of preventing end of the wire from separating, treat its end with solder or use the below mentioned
crimping terminal with insulated sleeve. (Refer to maker’s catalogue “WAGO made” for handling them.)
For AWG22 0.3 sq：216-322 light green
For AWG20 0.5 sq：216-221 white
Press tool：206-204 Bio- crimp (same as for power source)
・Wiring port is common with control signal. (Terminal stand: WAGO made 256 series)
Caution
Alarm connection
wiring port
Refer to page 12, ”wiring diagram” as for the arrangement of the terminal board.
Wire insert port
①Push the lever with a driver etc.
②Make sure of stripped wire length, and insert
them until the end without separating.
③Remove the driver from the lever.
④Make sure of wiring by pulling the electric wire
slightly.
How to connect to the terminal stand board
Stripped wire length:6mm
6mm

【INSTRUCTION MANUAL】
DAIKIN INDUSTRIES, LTD.
SE-04430
Terminal stand for
operation ready
output signal and
control stop signal
Wiring port for
control
input/output
signal
Wiring diagram of operation ready output signal and control stop signal
１５
※Never connect except between DIN1
and DIN2 terminal.
Danger
・Use the electric wire, cabtyre cable with shield which is suitable for AWG22 (0.3sq).
・Be sure to treat the end of shield cable properly, and ground the one side.
・Do not connect control connect line to the terminal stand for power source.
・Be careful not to damage the conductor when stripping electric wire.
・Use DC24V for control stop signal.
・Be careful not to stick out the conductor of wiring from the terminal stand.
Caution
・The control stop function is difference in signal input condition (operate/stop) by setting.
(Refer to setting mode of “Operating manual of the control panel”.)
・At shipping (standard product), when it operates outside switch is “OFF (opened)”, and it stop “ON
(closed)”.
・The control stop function is standard function for EHU25-L07, EHU25-M07 and EHU30-M07.
・In case of not connecting well with separating the wire’s end, treat its end with solder.
・Wiring port is common with alarm signal. (Terminal stand: WAGO made 234 series)
・When wiring, if the lever is not pushed straight, the terminal stand may be damaged.
①Push the lever with a driver etc.
②Make sure of stripped wire length, and insert
them until the end without separating.
③Remove the driver from the lever.
④Make sure of wiring by pulling the electric wire
slightly.
How to connect to the terminal stand board
Stripped wire length:6mm
6mm
Pushing direction of the lever
Wire
insert port
●The wiring of control stop signal line-----It is possible to operate/stop unit by ordering contact input.
(The hydraulic unit can be operated without wiring.)
●The wiring of operation ready output signal-----It is possible to output operation condition after power on.
After this signal is outputted, start to operate the actuator and so on.
(In case without wiring, refer to “Power supply turning on, a time chart related to alarm”
of attached document B for the time of starting operation of the actuator and so on.)
(1) Wire the electric cable through the wiring port of the terminal box.
Use the wire and the cable clamp to be suitable for the wiring port.
(2) Confirm the terminal wiring diagram on the cover of the terminal box,
connect to the control stop signal connection on the terminal stand for
power source.
Refer to below figure to connect control suspend signal line to
terminal base.
(3) After wiring, be sure to install the cover of the terminal box as it was.
(Wiring port is common with alarm signal.)
※Wiring of control
stop signal
(It is available either
plus or minus of power
source.)
Refer to page 12, ”wiring diagram” as for the arrangement of
the terminal board.
※Wiring of operation
ready output signal
(Power source is minus
common.)

【INSTRUCTION MANUAL】
DAIKIN INDUSTRIES, LTD.
SE-04430
【8.Test run】
After completing pouring fixed amount of hydraulic oil into tank, piping, and wiring, perform test run.
Starting confirmation
Changing oil
Removing air
Flushing operation ・After confirmation of the start, perform flushing operation under the circuit
pressure at low pressure. As flushing operation, connect all piping with
loop style except the actuator, and operate through 10μm filter by the oil
tank of the return piping.
・After completing the flushing operation, remove hydraulic oil in the tank
completely out of drain plug. Then fill fixed amount of flesh hydraulic oil
to the oil inlet port with air breather.
(Within NAS 10 class pure oil is used as flesh hydraulic oil.)
・Remove the air of hydraulic circuit completely.
If the air has not been removed thoroughly,
①abnormal operation of actuator, such as cylinder
②abnormal noise in the pump or in the valve
may occur.
・Turn the switch of machine controller “ON”.
①Before power on, confirm wiring of earth properly.
②It is not abnormal though it may take 12~13 seconds until pressure rises
after power on.
(Refer to Att.11page: 1-1,1-2)
③Confirm the pump rotation sound and pressure rising.
④Confirm that the fan of oil cooler is rotating.
１６
Danger
・In the process of air removing, be careful because there is a case of high pressure or high temperature
oil spouts.

【INSTRUCTION MANUAL】
DAIKIN INDUSTRIES, LTD.
SE-04430
■Explanation of each mode
・Normal mode : indicate actual pressure and alarm code
・Monitor mode : indicate pressure switch setup value, max. pressure setup value, max. flow setup value,
actual flow, actual number of revolutions.
・Setup mode : change the setting of max. pressure or max. flow.
・Alarm mode : confirm alarm contents.
■Shift to each mode
The key switch operation of shift to each mode is as following figure.
【9. Operation manual of the control panel】
Since this hydraulic unit has CPU, it is easy to monitor, setup, and adjust such as pressure/flow by operation of key
switch.
■ General description
The control panel is composed of 3 digits LED , mode key , setting key , and ENT (enter)
key . It normally indicates the actual pressure, and possible to change each mode as monitor indication and
setting indication by key switching.
１７
3 digits LED
key
key
key
(Mode key)
(Setting key)
(ENT key)
Power on
Actual pressure indication
Monitor mode Setup mode Alarm mode
P.21P.19P.18
Push
Push
Push the key
and simultaneously
for more than 2 seconds.
Push the key and simultaneously
for more than 2 seconds.
Push Push
Push the key and
simultaneously
for more than 2 seconds.

【INSTRUCTION MANUAL】
DAIKIN INDUSTRIES, LTD.
SE-04430
Notes
(1) As for the setup in factory, standard is MPa indication. Make sure to treat such as indication sticker to
identify PSI setup, in case of changing PSI mode.
If using the machine without any indication sticker in Japan, would be punished by the measuring law.
Please arrange indication sticker in your company.
(2)Refer to the alarm indication item, for the contents of alarm code.
It is possible to confirm actual number of power source input by pushing key while alarm code
indicating.
a) Monitor mode
While monitor mode, it is possible to monitor item on the table below by choice.
Operation example is shown as following.
<Ex.> Monitor actual flow rate.
■Operation manual of each mode
Item Contents Indication unit
n00 Pressure switch setup value [M Pa] or [×10PSI]
n01(1) M ax. p ressure setup value [M Pa] or [×10PSI]
n02 Max. flow setup value ×L/min
n03 Discharge volume ×L/min
n04(2) Latest alarm code Refer to p age22
n05 Revolutions / minute ×10min-1
Operation
Power On
Monitor mode
Choosing item NO.
Monitor indication
Return to actual pressure indication
Key operation
Another
monitoring
Actual pressure indication
3 digit LED Remarks
Discharge
volume
(theoretical
value)
5L/min
１８
It is able to change unit
by setup mode [P08].
or

【INSTRUCTION MANUAL】
DAIKIN INDUSTRIES, LTD.
SE-04430
b) Setup mode
While setup mode, it is possible to setup or change of pressure/flow by operation panel.
Concerning initial setting-value or adjustment range of non-standard or special required type product, refer
to the delivery specifications.
Co nt en t s
EHU14-L04
EHU25-L04
EHU25-L07
EHU25-M07
EHU30-M07 6.0 1.5～6.2
EHU14-L04
EHU25-L04
EHU25-L07
EHU25-M07
EHU30-M07 87 21～89
EHU14-L04 15.2 2.4～16.0
EHU25-L04
EHU25-L07
EHU25-M07
EHU30-M07
EHU14
-
L04
EHU25
-
L04
EHU25
-
L07
EHU25
-
M07
EHU30
-
M07
EHU14-L04
EHU25-L04
EHU25-L07
EHU25-M07
EHU30-M07
EHU14-L04
EHU25-L04
EHU25-L07
EHU25-M07
EHU30-M07
EHU14-L04
EHU25-L04
EHU25-L07
EHU25-M07
EHU30-M07
P05 Closed setu
p
ite
m
0
P06
0
EHU14-L04
EHU25-L04
EHU25-L07
EHU25-M07
EHU30-M07
EHU14-L04
EHU25-L04
EHU25-L07
EHU25-M07
EHU30-M07
EHU14-L04
EHU25-L04
EHU25-L07
EHU25-M07
EHU30-M07
EHU14-L04
EHU25-L04
EHU25-L07 20
EHU25-M07
EHU30-M07
P11 Closed setu
p
ite
m
0.15
P12
0.15
Type
Though it is able to be changed, it is not open t o the users.
Return to the initial value in case changing it by accident.
Initial setup
value
Adjustable
range
Indication
unit
In case it is not able to setup the value as
demand, setup the closest value as demand.
Indication value is a theoretical value, not
guaranteed value.
After confirming the op eration of the
pressure switch, setup delay time to the
signal output.
Refer to att.page11 for specifiscations of
pressure switch output.
-
7.0
P00
P01
P02
P03
P04
It is p ossible to indicate and setup the
contact output of abnormal motor
temp erature rise [E41] and abnormal fin
temp erature rise [E43].
Max. flow setup
4.0 1.5～4.2
(MPa)
When ther is the possibility to change
max.pressure setup value, use the
equipment which has option No. "-V".
M oreover, in case it has max, p ressure
setup value changed with standard
products, it is necessary to exchange and
adjust the valve block of the pump up p er
side.
58 21～60
(×10PSI)
1.5～7.2
101
（L/min）
25.0 3.4～26.2
21～104
00～999
(max:9.99秒）
(×10msec）
10: No output
1: Output
Setup of p ressure alarm delay time
0
0～62.0
(0: No
function)
P07
P08
Setup of switching start/stop signal
Setup of swit ching p ressure unit
(MPa)
0
0～899
(0: No
function)
(×10PSI)
1→Not es）
EHU**-L04: No
start/stop function
P09 Setup of p ressure switch op eration indication holding
0:input as operate
1:input as stop
00:MPa unit
1:PSI unit
In case it is used by the PSI unit, change
the sticker etc. which indicates the unit so
as t o identify unit.
Refer to p age15 in details.
Notes) In case of setting "0", the unit is
not op erat e.
-
-
Item NO
Max. pressure setup
Remarks
0
0:No hold
indication
1:Hold indication
-
1
T emp erature alarm setup
Setup of p ressure switch op eration pressure
Refer to att.p age13 in details.
Though it is able to be changed, it is not open t o the users.
Return to the initial value in case changing it by accident.
10
15
P10 Response gain
Adjust the control response value.
It becomes as sensitive as value is small.
0～999
-
１９

【INSTRUCTION MANUAL】
DAIKIN INDUSTRIES, LTD.
SE-04430
Changing setup mode
Choosing item NO.
Setup value indication
Return to actual pressure
indication
Another
setting
Push 2 keys
simultaneously for
more than 2 seconds. 2 seconds later
Changing setup value
Setup value entry Light up
item NO.
■Example of operation principles of setup mode. (Adjusting max. flow)
<Ex> Change max. flow 25L/min to 20.5L/min.
２０
Caution
・The change of the setup value is reflected, even if it is not written in. However, it is retuned the setup value
before change when it is returned in the actual pressure indication without writing it.
or
or
Operation Key operation 3 digit LED Remarks