Daikin ECORICH EHU 40 Series User manual

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PIM00504
Hybrid Hydraulic System
ECORICH
Design #40 Series
EHU1404
EHU2504
EHU2507
EHU3007
Instruction Manual
DAIKIN INDUSTRIES, LTD.
Oil Hydraulic Division

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Introduction
Thank you for choosing a Daikin Hydraulic Unit “ECORICH”. The “ECORICH” IPM motor drive hydraulic
unit achieves further energy savings and superior functions by adopting both advanced hydraulic
technology and an energy-saving IPM motor drive system that is a Daikin original development.
This instruction manual describes how to handle ECORICH, along with maintenance inspections,
troubleshooting, and specifications. Refer to this manual thoroughly before using your ECORICH, and
use it correctly.
General Precautions
Improper operation or handling of this product will cause accidents, reduced service life or
performance deterioration of the equipment.
Be sure to carefully refer to this manual and all accompanying documents before starting
installation/running/maintenance inspections, and use the product correctly after having
familiarized yourself with the information about the equipment, the safety information and all
the cautions.
The illustrations and photographs that appear in this manual may show the covers or safety
guards removed in order to explain the details. When running this product, be sure to refit
the covers and guards in their original positions as stipulated, and follow the instructions in
this manual.
The contents of this manual are subject to modification as appropriate for the sake of
improving the product, changing specifications, or improving the users’ convenience.
For the latest version, please check our Oil Hydraulics Division’s internet service
(http://www.daikinpmc.com/).
Take care to ensure that the contents of this manual are properly conveyed to the people
who will use this product.
When incorporating this product as a part of your machinery product, you are requested to
insert the contents of this manual into the instruction manual for the machine.
Be sure to keep this manual and the accompanying documents, delivery specifications and
so on so that they can be referred to at any time.
The figures given in this manual may not be same as the actual product due to product
improvement.
This manual is the literature relating to the safe handling of Daikin hydraulic units. Please
also prepare literature for the safe handling of your own machines in accordance with the
various regulations and standards, for safe running and maintenance.

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Chapter 1. SAFETY INSTRUCTIONS.......................................................................6
1.1 Indications of Safety Instructions in this Manual.......................................................... 6
1.2 Notes on Safety ........................................................................................................... 6
1.2.1 Disclaimers...................................................................................................................... 6
1.3 Restrictions on Applications......................................................................................... 7
1.3.1 General Precautions........................................................................................................ 7
1.4 Precaution.................................................................................................................... 8
1.5 For Safe Operation ...................................................................................................... 9
1.5.1 Installation and wiring...................................................................................................... 9
1.5.2 Operation....................................................................................................................... 10
1.5.3 Maintenance inspections............................................................................................... 11
1.5.4 Disposal......................................................................................................................... 11
Chapter 2. FEATURES AND CONSTRUCTION .....................................................12
2.1 Energy Savings.......................................................................................................... 12
2.2 Nomenclature............................................................................................................. 13
2.2.1 Models........................................................................................................................... 13
2.2.2 Manufacturing number................................................................................................... 14
Chapter 3. PRODUCT SPECIFICATIONS AND CONDITIONS OF USE................15
3.1 Product Specifications ............................................................................................... 15
3.2 Conditions of Use....................................................................................................... 16
3.3 PQ Representative Characteristic Diagrams ............................................................. 17
3.4 External Dimensions.................................................................................................. 18
3.5 Hydraulic Circuit......................................................................................................... 19
Chapter 4. COMPONENT PARTS AND PART NAMES..........................................20
Chapter 5. PROCEDURE FOR STARTING UP ......................................................21
Chapter 6. CHECKS UPON RECEIVING THE PRODUCT.....................................22
6.1 Check on the Contents of the Packaging................................................................... 22
6.2 Check on the Model................................................................................................... 22
Chapter 7. TRANSPORTATION/INSTALLATION...................................................23
7.1 Transportation............................................................................................................ 23
7.1.1 Transportation in the packaged state............................................................................ 23
7.1.2 Transportation of the product ........................................................................................ 23
7.2 Installation.................................................................................................................. 24
7.2.1 Secure the space for air intake/exhaust........................................................................ 24
7.2.2 Securing the hydraulic unit............................................................................................ 25
Chapter 8. HYDRAULIC PIPING.............................................................................26
8.1 Piping......................................................................................................................... 26
8.2 Filling with Hydraulic Oil............................................................................................. 27
Chapter 9. ELECTRICAL WIRING ..........................................................................28
9.1 Procedure for Mounting Exterior Covers.................................................................... 29
9.2 Overall Wiring Diagram.............................................................................................. 31
9.3 Installation of the Breaker.......................................................................................... 31
9.4 Connection of the Main Power Supply....................................................................... 32

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9.5 Connection of Input/Output Signal Cables................................................................. 34
9.5.1 Digital inputs.................................................................................................................. 36
9.5.2 Digital outputs................................................................................................................ 37
9.5.3 Contact outputs ............................................................................................................. 38
Chapter 10. TRIAL RUNNING...................................................................................39
Chapter 11. PANEL OPERATIONS ..........................................................................40
11.1 Names and Main Functions of Each Part of the Operation Panel ............................. 40
11.2 Functions of the Operation Panel .............................................................................. 40
11.2.1 Function overview.......................................................................................................... 40
11.2.2 Switching Among Modes............................................................................................... 41
11.3 Regular Mode ............................................................................................................ 41
11.4 Monitor Mode............................................................................................................. 42
11.4.1 List of display items in the monitor mode...................................................................... 42
11.4.2 Monitor mode operations............................................................................................... 43
11.5 Setting Mode.............................................................................................................. 44
11.5.1 Setting mode operations................................................................................................ 44
11.6 Alarm Mode Display................................................................................................... 46
11.6.1 Alarm mode operations ................................................................................................. 46
Chapter 12. ADJUSTING PARAMETERS.................................................................48
12.1 Parameter List............................................................................................................ 48
12.2 [P00: DI_A] Switching the Effective Logic for the ON/OFF Signal............................. 52
12.3 [P13: PL0/QL0] Pressure/Flow Rate Characteristics and Settings............................ 52
12.4 Setting Output Signals............................................................................................... 53
12.4.1 Parameters.................................................................................................................... 53
12.4.2 [P39: DO_S] Digital output selection/[P47: RMOT] Alarm relay output maintenance
notification enable/disable........................................................................................................... 53
12.5 Pressure Switch......................................................................................................... 54
12.5.1 Parameter list ................................................................................................................ 54
12.5.2 Explanation of parameters............................................................................................. 55
12.6 Settings Relating to Warnings/Alarms ....................................................................... 56
12.6.1 Setting judgment criteria for [E64: Dry running error].................................................... 56
12.6.2 Setting related to [E66: Temperature error due to pressure holding rotation speed drop]
56
12.6.3 Setting related to [L49: Motor electronic thermal relay overload warning].................... 56
12.7 Others ........................................................................................................................ 57
12.7.1 [P45: AC_F] Cooling fan motor speed........................................................................... 57
12.7.2 [P32: S_TM] Surge suppression at starts...................................................................... 57
12.7.3 [P48 : T_SP] Reverse rotation warning judgment wait time/[P49: SMTM] Start
acceptance wait time................................................................................................................... 58
Chapter 13. TROUBLESHOOTING...........................................................................59
13.1 Alarm Causes and Corrective Actions....................................................................... 59
13.2 Warning Causes and Corrective Actions................................................................... 64
13.3 Periodic Maintenance ................................................................................................ 66
13.4 Cleaning/Replacement Work..................................................................................... 68
13.5 Oil Cooler Maintenance Instructions.......................................................................... 69
13.5.1 Removing the oil cooler................................................................................................. 69
13.5.2 Disassembling the oil cooler.......................................................................................... 70
13.5.3 Cleaning the core .......................................................................................................... 70
13.5.4 Cleaning the DC fan...................................................................................................... 70

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13.5.5 Reassembly................................................................................................................... 70
13.6 Oil Filler Port Cum Air Breather Maintenance Instructions......................................... 71
13.6.1 Removal method ........................................................................................................... 71
13.6.2 Cleaning......................................................................................................................... 71
13.6.3 Mounting........................................................................................................................ 71
13.7 Suction Strainer Maintenance Instructions ................................................................ 72
13.7.1 Removal method ........................................................................................................... 72
13.7.2 Cleaning......................................................................................................................... 72
13.7.3 Reassembly................................................................................................................... 73
13.8 High-pressure Safety Valve Adjustment Instructions................................................. 73
13.9 Fixed Throttle (φ0.8) Mounting Instructions................................................................ 75
13.10 Minimum Rotational Speed Adjustment Instructions........................................... 76
Chapter 14. Output Signal Timing Charts..................................................................77
14.1 Timing Chart at Powering Up..................................................................................... 77
Chapter 15. ABOUT Hybrid-Win (MAINTENANCE/CONTROL FUNCTIONS)..........79

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Chapter 1. SAFETY INSTRUCTIONS
1.1 Indications of Safety Instructions in this Manual
In this manual, safety instructions are classified into three categories: “ DANGER”, “ WARNING”
and “ CAUTION”.
DANGER: Improper handling without regard to this indication will cause an imminently
hazardous condition that may result in death or serious injury.
WARNING: Improper handling without regard to this indication will cause a potentially
hazardous condition that may result in death or serious injury.
CAUTION: Improper handling without regard to this indication will cause a potentially
hazardous condition that may result in moderate or slight injury, or property
damage.
Note that even an item indicated as “ CAUTION” may result in a serious accident depending on the
situation. Safety instructions given in this manual include important information regardless of their
categories. Be sure to observe all of them.
1.2 Notes on Safety
1.2.1 Disclaimers
- Daikin shall not be responsible for any damage attributable to fire, earthquake, a third party’s action
or other accidents, or customers’ intentional acts, misuse or use under abnormal conditions.
- Daikin shall not be responsible for any consequential damages (loss of business profits, business
interruption) attributable to the use of this product, or the inability to use it.
- Daikin shall not be responsible for any accident or damage attributable to negligence in observing the
instructions given in the instruction manual or delivery specifications.
- Daikin shall not be responsible for any damage attributable to malfunction, etc., resulting from the
combination with connected equipment.
- Daikin shall not be responsible for any accident or damage attributable to disassembly, modification,
etc., of the product by the customer.

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1.3 Restrictions on Applications
DANGER
This product has not been designed or manufactured for the purpose of use in equipment used
in situations where human lives are at stake, for life-support equipment for example, or its
associated systems, or for special applications including mobile structures that carry people,
medical uses and nuclear power uses.
This product has been manufactured under strict quality control, but when it is used with
equipment where its failure, for example, can be anticipated to result in a serious accident or
loss, install safety devices in the machinery.
1.3.1 General Precautions
DANGER
Ensure that transportation, installation, piping, wiring, running, operation, maintenance and
inspection work are carried out by people with the required expertise.
When working, wear the safety gear required for safe work (working clothes, safety belt,
helmet, safety shoes, gloves, etc.).
This product has corners. When installing it, work with care to avoid injuries.
Do not use this product outside the specifications stated in this manual, the catalog, the
delivery specifications and elsewhere.
Never modify the product. Also, never disassemble it except for the purposes of inspection as
described in this manual. Otherwise, there is a risk of electric shock, fire, and injury.
When this product fails, it stops running and cannot maintain the hydraulic pressure supplied.
To ensure that machines and units do not enter a dangerous state when this product fails,
install a safety device for the system as a whole, such as an emergency brake. Otherwise,
there is a risk of accidents and injuries.
Do not use this product in locations where there is direct contact with coolant, for example, or
in an atmosphere that is corrosive to rubber. In addition, never use it in the vicinity of
combustible material.
Do not install or run this product while it is damaged or has missing parts. Otherwise, there is
a risk of accidents.
Do not use this product beyond the specifications stated in this manual. Otherwise, there is a
risk of breakage, fire and injury.
CAUTION
Be sure to carry out daily inspections (as described in this manual or the accompanying
documents).
Do not apply any external force to this product, for example by climbing on it or striking it.
Otherwise, there is a risk of injury and breakage.

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1.4 Precaution
(1) Regarding the hydraulic connections to this hydraulic unit, use hoses to prevent transmission of
the vibration of the motor pump to the machine.
(2) This hydraulic unit is equipped with a fan to cool the hydraulic oil, controller and motor. To assure
the air intake and exhaust for the fan, do not place any obstruction within 10 cm from the unit. In
addition, install the unit at a location with good ventilation so that hot air does not remain.
(3) Turning the power ON/OFF frequently significantly shortens the life of the controller. Run and
stop this hydraulic unit by using start/stop digital inputs. Leave an interval of at least 8 minutes
between stopping and running of the unit by turning the power ON/OFF. When stopping and
running of the unit with start/stop signals, leave an interval of at least 0.5 seconds between the
stop command and restarting.
(4) This hydraulic unit is equipped with a safety valve. The high-pressure safety valve is set at 1.5
MPa as factory default. Readjust the set pressure of the high-pressure safety valve according to
your usage by following “13.8 High-pressure Safety Valve Adjustment Instructions”.
Note also that the set pressure of the high-pressure safety valve may drop due to repeated
protracted operation of the machine or contamination in the hydraulic oil. If the product is used
continuously with the safety valve actuated, an alarm may occur due to temperature rise for
example. In this case too, carry out readjustment.
(5) Restrict continuous use at the maximum pressure to 5 L/min or less.

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1.5 For Safe Operation
Be sure to carefully read this manual and all accompanying documents before starting
installation/running/maintenance inspections, and use the product correctly after having familiarized
yourself with the information about the equipment, the safety information and all the cautions.
1.5.1 Installation and wiring
DANGER
The wiring work must be done by a qualified electrical engineer. Otherwise, there is a risk of
electric shock or fire.
Personnel doing wiring work must wear gloves and long sleeves and implement safety
measures to avoid injuries such as grazes.
Personnel doing wiring work must wear gloves and long sleeves and implement safety
measures to prevent electric shocks and fire due to static electricity.
Complete the installation before starting the wiring work. Otherwise, there is a risk of electric
shock and fire.
Check that the input power supply is OFF before starting the wiring work. Otherwise, there is a
risk of electric shock.
When carrying out wiring work again after the power has been ON, check that the motor is
stopped, and wait at least 5 minutes after powering OFF before starting the work. Otherwise,
there is a risk of electric shock.
Use an EN60947-2-compliant no-fuse breaker and earth leakage circuit breaker (with
overcurrent protection). Otherwise, there is a risk of electric shock and fire. For the capacities
of circuit breakers, refer to “9.2 Overall Wiring Diagram”.
Ground the grounding terminals in accordance with the law in the country concerned.
Otherwise, there is a risk of electric shock and fire. Make a direct connection without going
through a circuit breaker.
Make sure that no conductive foreign objects such as screws or metal scraps, or combustible
foreign matter such as wood debris or oil, get inside the controller. Otherwise, there is a risk
of electric shock, fire, and accidents.
Never use the product in a location where water will get onto it, in a corrosive atmosphere, or
an atmosphere containing inflammable gas, or near flammable materials. Otherwise, there is a
risk of electric shock and fire.
Do not damage harnesses, apply strong forces to them, rest heavy objects on them, trap them
or bend them excessively. Otherwise, there is a risk of electric shock and breakage.
To move this product, use the eye bolts. Hoisting it by the pump piping, for example, will pose
a danger of the product falling or overturning.
Do not install or run this product while it is damaged or has missing parts. Otherwise, there is
a risk of accidents.

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CAUTION
Strictly follow the requirements for the installation environment. Otherwise, there is a risk of
fire and accidents.
Install it at a location that can bear its weight. Otherwise, there is a risk of accidents.
Do not expose terminals or other parts to static electricity. Otherwise, there is a risk of
failures.
Check that the input power supply voltage is within the rated voltage range. Otherwise, there
is a risk of fire and accidents.
Check terminal pinouts and terminal codes, and make error-free connections.
Carry out withstand voltage tests at DC 2kV or lower. Applying voltages higher than this may
cause damage.
Do not perform Megger testing on control circuits. Otherwise, there is a risk of damage.
Take measures to ensure that sensors and devices in the vicinity do not malfunction due to
electromagnetic noise. Otherwise, there is a risk of accidents.
Do not subject this product to strong impacts. Otherwise, there is a risk of accidents.
Do not climb onto the product, or rest any heavy object on it. Otherwise, there is a risk of
electric shock, accidents and breakage.
Ensure that this product’s environment remains within the permissible ambient temperature
and humidity ranges. Otherwise, there is a risk of failures and shortening of service life.
1.5.2 Operation
DANGER
Do not operate switches with wet hands. Otherwise, there is a risk of electric shock.
While the product is powered up, do not change the wiring, or connect/disconnect terminals,
etc. Otherwise, there is a risk of electric shock, accidents and damage.
Do not turn on and shut off the power frequently. Otherwise, there is a risk of failures.
CAUTION
Set the pressure and flow rate such that they do not exceed the permissible range for the
machine. Otherwise, there is a risk of accidents.
Before running the product, set parameters appropriate for the machine. Otherwise, there is a
risk of injury, and failures of the machine.
Before running the product, ensure that you will be able to effect an emergency stop at any
time. Otherwise, there is a risk of injury, and failures of the machine.
When a power outage occurs, do not approach the machine since it is possible that it will
suddenly resume motion after the power is restored. Otherwise, there is a risk of injury. It is
advisable to set the start/stop signals to positive logic (see “12.2 [P00: DI_A] Switching the
Effective Logic for the Start/Stop Signal”) for starts to ensure safe restarting.
While the product is powered up, and for some time after shutting the power off, the heat-
radiating fins and electronic devices will be hot, so do not touch them. Otherwise, there is a
risk of burns.

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1.5.3 Maintenance inspections
DANGER
Maintenance inspections must be performed by an appropriately qualified technician.
Otherwise, there is a risk of electric shock and injury.
Check that the input power supply is OFF before starting the work. Otherwise, there is a risk of
electric shock.
Check that the motor is stopped, and wait at least 5 minutes after powering OFF before starting
the work. Otherwise, there is a risk of electric shock.
While the product is powered up, do not change the wiring, or connect/disconnect terminals,
etc. Otherwise, there is a risk of electric shock, accidents and damage.
CAUTION
Wear protective glasses and gloves while carrying out the work.
Do not touch the controller board directly. Otherwise, it could be damaged by static electricity.
Carry out withstand voltage tests at DC2kV or lower. Applying voltages higher than this may
cause damage.
Do not perform Megger testing on control circuits. This could damage the product.
Do not disassemble this product. Otherwise, there is a risk of electric shock and injury.
1.5.4 Disposal
CAUTION
When disposing of this product, entrust it to a specialist contractor as general industrial waste.

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Chapter 2. FEATURES AND CONSTRUCTION
2.1 Energy Savings
By adopting a highly efficient IPM motor drive system that is an original development by Daikin, the
energy efficiency of the electric motor section has been increased.
The Daikin hybrid hydraulic system “ECORICH” is a “friendly system for both people and the
environment”. ECORICH realizes revolutionary energy-saving characteristics and low noise by combining
advanced hydraulic technology and motor/inverter technology.

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2.2 Nomenclature
2.2.1 Models
(a) (b) (c) (d) (e) (f) (g) (h) (i) (j) (k) (l) (m) (n)
EHU ∗∗ ∗∗ − 40 −∗∗∗∗−∗∗∗∗∗∗
(a) Model
- EHU: EHU series
(b) Maximum discharge rate
- 14: 14 L/min (4 MPa only)
- 25: 25 L/min
- 30: 28.5 L/min (7 MPa only)
(c) Maximum operating pressure
- 04: 4.0 MPa - 07: 7.0 MPa
(d) Design number
- 40: #40 series
This progresses with model changes.
(e) Power supply input specifications
- (None) : Standard (3-phase, 200 V)
(f) Control power supply option
- (None) : Standard (none)
- S: Power and control system separation
(g) Communications option
- (None) : Standard (none)
- C: RS422/485 communication
(The factory default setting is RS422 communication.)
(h) Optional function
- (None) : Standard (none)
(i - N)
Non-standard unit control number
- (None) : Standard product
- 3-digit number or codes for unit options
- Code combination comprising up to 6 digits of alphabetic characters
Code Description
F Water fill test tank
M Water leak test tank
B Oil filler port, yellow
G Oil level gauge guard (yellow)
E Oil level gauge guard (black)
J Microseparator
K Thermometer
L Level switch (NO contact)
H Level switch (NC contact)
P Temperature switch (NC
contact)
A With plate compatible with #30
ECORICH
Unit option code
Unit optionController option

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Notes on Nomenclature
(1) If there is no option, the code ends at (d).
Example: EHU2504-40
(2) When a unit option is added to the basic unit, one letter of the alphabet “N” is inserted.
Example: EHU2504-40-N-(unit option)
(3) When a controller option is selected, the relevant letters of the alphabet (from 1 to 4 characters)
are allocated.
Examples: EHU2504-40-C-(option)
EHU2504-40-SC-(option)
(4) If there is no unit option, the code is terminated at the controller option, and “-” (the hyphen) is
deleted.
Example: EHU2504-40-SC
(5) Regarding codes for other options or non-standard unit control number:
(1) Codes for other options shall comprise up to six digits of alphabetic characters, in ascending
sequence with left-alignment.
(2) Non-standard unit number shall comprise three numerical digits.
Examples: -BFGJKL, -123
* (1) and (2) shall not be combined. Bad example: -BG001
2.2.2 Manufacturing number
(i) (j) (k) (l)
∗∗ ∗∗ − ∗∗ −∗∗∗∗∗
(j) Hardware change history
(k) Software change history
(l) Month/year of production
(m) Serial number

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Chapter 3. PRODUCT SPECIFICATIONS AND CONDITIONS OF USE
3.1 Product Specifications
Product Model EHU1404 EHU2504 EHU2507 EHU3007
Power rating (kW) 0.75 1.5 2.2 2.8
Maximum operating pressure
(MPa) 4.0 7.0
Operating pressure adjustment
range (MPa) 1.5 - 4.0 1.5 - 7.0
Maximum flow rate (∗1) (L/min)
Maximum rotational speed (rpm) 15.2
3800 25.1 4400 28.5 5000
Operating flow rate adjustment
range (∗1) (L/min) 2.5 - 15.2 3.5 - 25.1 3.5 - 28.5
Tank capacity (L) 18
Mass (kg) 26 29
External dimensions (mm) 432 (w) ×328 (d) ×487 (h)
Coating color Black ∗Purchased parts, etc.: standard color of the equipment
manufacturer
Discharge port size Rc3/8 1 location
Return port size Rp1/2, 2 ports (in the oil)/1 port (above the oil level)
Return port size (above the oil
level) Rp1, 1 port
Digital input (3 channels) Photo coupler insulation, DC +24 V (max. 27 V) 5 mA,
positive or negative common
Digital output (1 channel) Photo coupler insulation, open collector output,
DC+24 V (max. 27 V) 50 mA max., positive or negative common
Alarm output (1 channel) Relay output, contact capacity: DC30 V max. 1A, ALM NO: open
when abnormal/ALM NC: closed when abnormal/COM: common
Communications port
(RS-485/RS-422) Serial communications port
∗Can be used only with communications option
Communications port (UART): Communications port for service
∗For communications with a personal computer, a dedicated USB-
UART communications converter is required.
*1 The maximum flow rate is the theoretical value, not the guaranteed value.
CAUTION
The factory default setting is the maximum flow rate.
The pressure and flow rate can be set beyond the adjustment ranges stated above, but be
sure to use the product within the operating pressure range and operating flow rate range
stated above.
This hydraulic unit incorporates a high-pressure safety valve, and its factory default pressure
setting is 1.5 MPa. Adjust this setting according to the actual pressure used, by following the
procedure given in “High-pressure Safety Valve Adjustment Instructions”.
The same applies when there is a need to minimize the surge pressure when an actuator
operates.
Restrict continuous use at the maximum pressure to 5 L/min or less.
Refer to the specification documents (External dimension sheet) for other specifications.

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3.2 Conditions of Use
Useable oil (Note 1) •Mineral-oil based hydraulic oil
(For the recommended brand, see our “DAIKIN OIL HYDRAULIC EQUIPMENT
Catalog (HK196)”.)
•Viscosity grade: ISO VG 32 to 68
•Dynamic viscosity range: 20 to 88 mm2/s (recommended values), 15 to 400
mm2/s (usable range)
•Contamination: Within NAS class 10, water content 0.1%vol max.
•Tank oil temperature range: 15 to 50°C (recommended values), 0 to 60°C
(usable range) (Note 3)
Input power supply
(Note 2) •AC 3-phase, 200/200/220 V, 50/60/60 Hz (Permissible voltage fluctuation:
±10%)
Discharge port Rubber hose connection
Operating ambient
temperature 0 to 40 °C
Storage ambient
temperature −20 to 60 °C
Operating ambient
humidity Under 85% RH (no condensation)
Operating altitude 1,000 m maximum
Installation site Indoors (Be sure to fix with bolts, etc.)
Other •Be sure to install no-fuse breakers at all poles (3 poles or 2 poles) at the main
circuit power supply side (primary side).
•Wire electrical connections so as to satisfy JIS B 9960-1 (European standard
EN60204-1).
•Turning the power ON/OFF within a short time will significantly shorten the life
of the controller. If operation is to be repeatedly started/stopped with an
interval of shorter than 8 minutes, use start/stop signals. Note, however, that
they must be used with an interval of at least 0.5 seconds between the stop
command and restarting.
•Be sure to ground ground terminals in accordance with the law in the country
concerned. Make a direct connection without going through a circuit breaker.
Note 1:Hydraulic oil must be the mineral-base oil type (e.g. water-glycol can’t be used).
Note 2:Note that if there is fluctuation on the plus side even if it is within the tolerance, an overvoltage
alarm that stops operation may occur at the response, depending on the operating conditions of
the main machine and the load conditions. Note that if there is fluctuation on the minus side even
within the permissible fluctuation of the power supply voltage, it can adversely affect the output
characteristics.
Note 3:When using the product outside the recommended operating temperature range, the pressure
pulsations may become large and the discharge rate may decrease, but this is not abnormal.

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3.3 PQ Representative Characteristic Diagrams
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*1 The above are the representative characteristics with oil type VG32 and a temperature of 40°C.
*2 The above PQ characteristics diagrams show the operating range in terms of actual flow rates.
*3 Restrict continuous discharge flow rate at the maximum pressure to 5 L/min or less.
Q discharge rate (L/min)
Q flow rate (L/min)
Q discharge rate (L/min)
Q flow rate (L/min)
P pressure (MPa) P pressure (MPa)
P pressure (MPa) P pressure (MPa)

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3.4 External Dimensions
4-φ13 holes (positions) 4-φ10 holes (▲positions)
Oil filling / Oil drain port
Section at A-A
(Dimensions of mounting holes
for installation)

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19
PIM00504
3.5 Hydraulic Circuit
Part No. Name
1 Oil tank
2 Suction strainer
3 Oil level gauge
4-1 Inverter driven motor pump
4-2 Controller
5 Oil filler port-cum-air breather
6 Oil cooler
Above the oil level

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20
PIM00504
Chapter 4. COMPONENT PARTS AND PART NAMES
Operation panel
Controller
Oil cooler
DC fan
Oil tank
Front View of Unit
Safety valve
Inverter driven
motor pump
Oil filler port-
cum-air breather
Oil level gauge
Oil outlet port-
cum-oil drain port