Trademark informationMTS and SilentFlo are registered trademarks of MTS Systems Corporation
within the United States. These trademarks may be protected in other countries.
DTE is a registered trademark of Exxon Mobil Corporation.
Tellus is a registered trademark of Shell Oil Corporation.
Synasol is a registered trademark of Union Carbide Corporation.
Molykote is a registered trademark of Dow Chemical Corporation.
How to Get Technical Support 7
Before You Contact MTS 7
If You Contact MTS by Phone 9
Problem Submittal Form in MTS Manuals 10
Preface 11
Before You Begin 11
Conventions 12
Documentation Conventions 12
Introduction 15
EU Declarations 15
Model 505.60 HPU Component Identification 16
HPU Functional Description 18
Options Available for the HPU 18
Model 505.60/.90 HPU Hydraulic Schematic 20
Model 505.120/.150/.180 HPU Hydraulic Schematic 21
Model 505.60 HPU Electrical Control 22
Model 505.60/.90 Electrical Schematic 23
Model 505.120/.150/.180 Electrical Schematic 26
Specifications 32
Model 505.60–505.180 HPU General Specifications 32
Model 505.60 HPU Specifications 33
Model 505.90 HPU Specifications 34
Model 505.120 HPU Specifications 35
Model 505.150 HPU Specifications 36
Model 505.180 HPU Specifications 37
Safety 39
General Safety Practices: Hydraulic Power Units and Hydraulic Service Manifolds 39
Hazard Placard Placement 45
Model 505.60 - 505.180 SilentFlo™ HPUContents
3
Installation 47
Model 505.60—505.180 HPU Electrical, Hydraulic, and Water Connections 47
Model 505.60 HPU Setup 52
Testing Model 505.60 HPU Operation 56
Precharging the Optional Surge Suppressor Accumulator 59
Operation 63
Model 505.60 HPU Startup Panel 64
Model 505.60 HPU Main Display 66
Model 505.60 HPU Data 68
Model 505.60 HPU Status 69
Model 505.60 HPU Setup 70
ROD Setup 72
Operating the Model 505.60 HPU Locally or Remotely 74
Recovering From an Interlock 76
Changing the Water Flow 78
Resetting the Thermal Overloads 79
Adjusting the Model 505.60 Hydraulic Pressure 81
Low/High Pressure Functionality 83
Setting Up Run-On-Demand 85
Maintenance 87
Routine Maintenance Overview Checklist 88
Models 505.60/.90/.120/.150/.180 HPU Maintenance Schedule 90
Checking the Hydraulic Fluid 92
Checking the Low Level/Temperature Detector 93
Replacing the Return-line Filter 94
Clamp-Style Housing Filter Replacement 94
Capscrew-Style Housing Filter Replacement 96
Replacing the Optional High-Pressure Filter 97
Sampling the Hydraulic Fluid 99
Replacing the Hydraulic Fluid 101
Inspecting the Heat Exchanger 103
Hydraulic Power Unit Maintenance and Service Logs 105
The manuals supplied by MTS provide most of the information you need to use
and maintain your equipment. If your equipment includes software, look for
online help and README files that contain additional product inform ation.
If you cannot find answers to your technical questions from these sources, you
can use the Internet, e-mail, telephone, or fax to contact MTS for assistance.
MTS provides a full range of support services after your system is installed. If
you have any questions about a system or product, contact Technical Support in
one of the following ways.
www.mts.comThe web site provides access to our technical support staff by means of an
onlineform:
www.mts.com > Contact MTS > Service & Technical Support button
E-mailtech.support@mts.com
TelephoneMTS Call Center 800-328-2255
Weekdays 7:00 A.M. to 5:00 P.M., Central Time
Fax952-937-4515
Please include “Technical Support” in the subject line.
Outside the U.S.For technical support outside the United States, contact your local sales and
service office. For a list of worldwide sales and service locations and contact
information, use the Global MTS link at the MTS web site:
www.mts.com > Global MTS > (choose your region in the right-hand
column) > (choose the location closest to you)
Before You Contact MTS
MTS can help you more efficiently if you have the following information
available when you contact us for support.
Know your site
number and system
number
Model 505.60 - 505.180 SilentFlo™ HPUTechnical Support
The site number contains your company number and identifies your equipment
type (such as material testing or simulation). The number is typically written on a
label on your equipment before the system leaves MTS. If you do not know your
MTS site number, contact your sales engineer.
Example site number: 571167
When you have more than one MTS system, the system job number identifies
your system. You can find your job number in your order paperwork.
Example system number: US1.42460
7
Before You Contact MTS
Know information from
prior technical
If you have contacted MTS about this problem before, we can recall your file
based on the:
assistance
•MTS notification number
•Name of the person who helped you
Identify the problemDescribe the problem and know the answers to the following questions:
•How long and how often has the problem occurred?
•Can you reproduce the problem?
•Were any hardware or software changes made to the system before the
problem started?
•What are the equipment model numbers?
•What is the controller model (if applicable)?
•What is the system configuration?
Know relevant
For a computer problem, have the following information available:
computer information
•Manufacturer’s name and model number
•Operating software type and service patch information
Know relevant
software information
•Amount of system memory
•Amount of free space on the hard drive where the application resides
•Current status of hard-drive fragmentation
•Connection status to a corporate network
For software application problems, have the following information available:
•The software application’s name, version number, build number, and (if
available) software patch number. This information can typically be found
in the About selection in the Help menu.
•The names of other applications on your computer, such as:
A Call Center agent registers your call before connecting you with a technical
support specialist. The agent asks you for your:
•Site number
•Name
•Company name
•Company address
•Phone number where you can be reached
If your issue has a notification number, please provide that number. A new issue
will be assigned a unique notification number.
Identify system typeTo enable the Call Center agent to connect you with the most qualified technical
support specialist available, identify your system as one of the following types:
•Electromechanical material test system
•Hydromechanical material test system
Be prepared to
troubleshoot
Write down relevant
information
After you callMTS logs and tracks all calls to ensure that you receive assistance for your
•Vehicle test system
•Vehicle component test system
•Aero test system
Prepare to perform troubleshooting while on the phone:
•Call from a telephone close to the system so that you can implement
suggestions made over the phone.
•Have the original operating and application software media available.
•If you are not familiar with all aspects of the equipment operation, have an
experienced user nearby to assist you.
In case Technical Support must call you:
•Verify the notification number.
•Record the name of the person who helped you.
•Write down any specific instructions.
problem or request. If you have questions about the status of your problem or
have additional information to report, please contact Technical Support again and
provide your original notification number.
Model 505.60 - 505.180 SilentFlo™ HPUTechnical Support
9
Problem Submittal Form in MTS Manuals
Problem Submittal Form in MTS Manuals
Use the Problem Submittal Form to communicate problems with your software,
hardware, manuals, or service that are not resolved to your satisfaction through
the technical support process. The form includes check boxes that allow you to
indicate the urgency of your problem and your expectation of an acceptable
response time. We guarantee a timely response—your feedback is important to
us.
Access the Problem Submittal Form:
•In the back of many MTS manuals (postage paid form to be mailed to MTS)
•www.mts.com > Contact Us > Problem Submittal Form button (electronic
form to be e-mailed to MTS)
Technical Supp ort
10
Model 505.60 - 505.180 SilentFlo™ HPU
Before You Begin
Preface
Before You Begin
Safety first!Before you use your MTS product or system, read and understand the Safety
manual and any other safety information provided with your system. Improper
installation, operation, or maintenance can result in hazardous conditions that can
cause severe personal injury or death, or damage to your equipment and
specimen. Again, read and understand the safety information provided with your
system before you continue. It is very important that you remain aware of
hazards that apply to your system.
Other MTS manualsIn addition to this manual, you may receive additional manuals in paper or
electronic form.
You may also receive an MTS System Documentation CD. It contains an
electronic copy of the manuals that pertain to your test system, such as:
•Hydraulic and mechanical component manuals
•Assembly drawings
•Parts lists
•Operation manual
•Preventive maintenance manual
Controller and application software manuals are typically included on the
software CD distribution disc(s).
Model 505.60 - 505.180 SilentFlo™ HPUPreface
11
Conventions
DANGER
WARNING
CAUTION
Conventions
Documentation Conventions
The following paragraphs describe some of the conventions that are used in your
MTS manuals.
Hazard conventionsHazard notices may be embedded in this manual. These notices contain safety
information that is specific to the activity to be performed. Hazard notices
immediately precede the step or procedure that may lead to an associated hazard.
Read all hazard notices carefully and follow all directions and recommendations.
Three different levels of hazard notices may appear in your manuals. Following
are examples of all three levels.
NoteFor general safety information, see the safety information provided with
your system.
Danger notices indicate the presence of a hazard with a high level of risk which,
if ignored, will result in death, severe personal injury, or substantial property
damage.
Warning notices indicate the presence of a hazard with a medium level of risk
which, if ignored, can result in death, severe personal injury, or substantial
property damage.
Caution notices indicate the presence of a hazard with a low level of risk which,
if ignored, could cause moderate or minor personal injury or equipment damage,
or could endanger test integrity.
NotesNotes provide additional information about operating your system or highlight
easily overlooked items. For example:
NoteResources that are put back on the hardware lists show up at the end of
the list.
Special termsThe first occurrence of special terms is shown in italics.
IllustrationsIllustrations appear in this manual to clarify text. They are examples only and do
not necessarily represent your actual system configuration, test application, or
software.
Electronic manual
conventions
This manual is available as an electronic document in the Portable Document
File (PDF) format. It can be viewed on any computer that has Adobe Acrobat
Reader installed.
12
Preface
Model 505.60 - 505.180 SilentFlo™ HPU
Documentation Conventions
Hypertext linksThe electronic document has many hypertext links displayed in a blue font. All
blue words in the body text, along with all contents entries and index page
numbers, are hypertext links. When you click a hypertext link, the application
jumps to the corresponding topic.
HPU Functional Description 18
Options Available for the HPU 18
Model 505.60/.90 HPU Hydraulic Schematic 20
Model 505.120/.150/.180 HPU Hydraulic Schematic 21
Model 505.60 HPU Electrical Control 22
Model 505.60/.90 Electrical Schematic 23
Model 505.120/.150/.180 Electrical Schematic 26
Model 505.60–505.180 HPU General Specifications 32
Model 505.60 HPU Specifications 33
Model 505.90 HPU Specifications 34
EU Declarations
Model 505.120 HPU Specifications 35
Model 505.150 HPU Specifications 36
Model 505.180 HPU Specifications 37
Model 505.60 - 505.180 SilentFlo™ HPUIntroduction
EC Declaration of
Conformity (Machinery
Directive 2006/42/EC
Annex II 1A)
If applicable, a Declaration of Conformity is supplied with the machinery; an
example of the Declaration of Conformity is provided at the end of this manual.
15
Model 505.60 HPU Component Identification
Heat Exchanger and
Manifold Enclosure
Filter Assembly
Pump
Assemblies
Reservoir
Output
Pressure
Controls
Filler Cap
Fluid Level Gage
Level/Temperature
Transducer
Level/Temperature
Switch
Power
Disconnect
Switch
Emergency
Stop Switch
User
Interface
Panel
Main
Electrical
Enclosure
Commoning
Expansion Plate
Model 505.60 HPU Component Identification
16
Introduction
Component Locations (505.90 Shown)
Model 505.60 - 505.180 SilentFlo™ HPU
Model 505.60 HPU Component Identification
Component Descriptions
ComponentDescription
Commoning Expansion
Plate
Electrical Enclosure
Filler Cap
Filter
Fluid Level Gage
Heat Exchanger
Level/Temperature
Transducer
Low Level/Temperature
Switch
Manifold
Allows the HPU to be commoned with another HPU.
Houses the HPU’s electrical and control components. The wye-delta starters
for the Model 505.60/.90 HPUs are located in the electrical enclosure. The
wye-delta starters for the Model 505.120/.150/.180 HPUs are located in the
pump assemblies. The main power lines enter the electrical enclosure at its top.
The power disconnect switch removes electrical power whenever the
enclosure’s door is opened.
Vents the hydraulic fluid reservoir. This is where you add hydraulic fluid.
Filters particles out of the hydraulic fluid as it is returned to the HPU.
Indicates the reservoir hydraulic fluid level.
Cools the hydraulic fluid using a highly efficient, stainless steel oil-to-water
heat exchanger. The heat exchanger removes most of the heat generated by the
HPU.
Senses the hydraulic fluid level and temperature, and produces an analog
signal for display purposes.
Senses the hydraulic fluid level and temperature. Control interlocks
automatically shut the HPU down if the fluid level drops too low or the
hydraulic fluid temperature rises above the sensor’s setting.
Combines the output of the individual pumps to deliver the full output of the
HPU through a single port. The manifold provides solenoid control of the high/
low pressure output from the individual pumps. It also contains relief valves
for each pump circuit and a bypass circuit to maintain the hydraulic
temperature during low flow conditions.
Output Pressure Controls
Power Disconnect Switch
Sets the output pressure of each pump assembly .
Disconnects the incoming power from the HPU. The switch is a lockable,
mechanical latch. Power is removed whenever the door to the electrical
enclosure is open. The switch will not allow the door to be opened when in the
ON (|) position. Incoming power lines to the switch are live unless power is
removed externally.
Pump Assemblies
Produces the pressurized hydraulic fluid for system use. Each pump assembly
includes a motor, pump, and electrical enclosure for connecting with the main
starter.
Reservoir
User Interface Panel
Holds the hydraulic fluid and houses the pump and motor.
Configures and controls the operation of the hydraulic power unit and indicates
the current status of several sensors.
Model 505.60 - 505.180 SilentFlo™ HPUIntroduction
17
HPU Functional Description
HPU Functional Description
Pump assembliesPump assemblies draw hydraulic fluid from the reservoir and pressurize it to a
maximum preset pressure. Each pump assembly contains a variable volume
pump, a motor, and an electrical enclosure. Each pump assembly has a flow
capacity that contributes to the total hydraulic flow capacity of the HPU.
ManifoldThe manifold combines the pressurized hydraulic output of the discrete pump
assemblies, and provides the hydraulic connection to your hydraulic system. The
manifold contains the high/low pressure solenoid valve and a nonadjustable relief
valve. Check valves are located within the manifold to prevent pressurized
hydraulic fluid from being forced back through the pumps.
The hydraulic power unit uses solenoid-operated valves to control when highpressure is available to the hydraulic circuit. Start/low/high control settings are
selected at the operator interface on the electrical enclosure’s front panel.
The HPU is designed to start in low pressure to reduce the amperage needed for
starting, which will extend the life of the pump and motor. When operating at this
setting, low-pressure hydraulic fluid circulates back to the reservoir through the
manifold. The direct fluid path back to the reservoir limits pressure and flow
available out to the external hydraulic circuit. When high pressure is selected, the
unit forces pressurized hydraulic fluid out to the hydraulic circuit.
FilteringAs hydraulic fluid returns to the reservoir, it is filtered by a full flow element.
This ensures that all hydraulic fluid is filtered, whether it travels out through the
circuit or returns by way of the unit’s manifold under low pressure. Filter
cleanliness is automatically monitored. A warning registered on the unit’s
operator interface signals when the filter needs to be changed.
Heat exchangerHydraulic fluid temperature is maintained with a high–efficiency stainless steel
heat exchanger that cools the fluid. A regulating valve monitors the temperature
of the hydraulic fluid and adjusts the flow of water through the plates. The flow
of cooling water regulates the temperature of the hydraulic fluid. If the hydraulic
fluid temperature exceeds the maximum preset temperature, a switch opens and
shuts down the HPU. When the HPU is shut off, the flow of water is
automatically stopped by a shutoff solenoid valve.
Options Available for the HPU
Accumulator optionAccumulators can be added to the hydraulic output lines to damp pressure line
fluctuations. This option accommodates one pressure line accumulator.
Run-on-demand optionThe run-on-demand (ROD) option will turn individual pumps on and off as
needed to accommodate the system’s demand for hydraulic fluid. The PLC
monitors the fluid flow; when flow changes beyond preset limits for a preset
time, a pump will be turned on or off as needed.
18
Introduction
Model 505.60 - 505.180 SilentFlo™ HPU
Options Available for the HPU
The ROD option allows the HPU to turn individual pump motors on and off as
your system flow demand changes. A minimum flow reserve is maintained and
pump usage is equalized by sequentially turning on pumps starting with the
pump with the least amount of run time, and turning the pumps off in reverse
order. The cycling of these pumps is controlled by a PLC that takes into account
various system parameters such as system hydraulic fluid flow (both real time
and trends), the number of pumps currently running, and user configurable on/off
delay settings.
Model 505.60 - 505.180 SilentFlo™ HPUIntroduction
19
Model 505.60/.90 HPU Hydraulic Schematic
Model 505.60/.90 HPU Hydraulic Schematic
The hydraulic schematic shows the functional layout of HPU models with two or
three pump assemblies (505.60/.90).
20
Introduction
Model 505.60 - 505.180 SilentFlo™ HPU
Model 505.120/.150/.180 HPU Hydraulic Schematic
Model 505.120/.150/.180 HPU Hydraulic Schematic
The hydraulic schematic shows the functional layout of HPU models with four to
six pump assemblies (505.120/.150/.180).
Model 505.60 - 505.180 SilentFlo™ HPUIntroduction
21
Model 505.60 HPU Electrical Control
Model 505.60 HPU Electrical Control
The HPU can be controlled locally using the front panel controls, or remotely
through a controller via the J1 connector . A PLC (programmable logic controller)
manages the electrical systems within the HPU. The electrical system includes
the following:
•A user interface panel that contains a touch screen to program preferences
and operational settings. The screens on the user interface panel provide
quick indication of the unit’s condition, including motors status, running
time displays for each motor, hydraulic fluid level and temperature, and
filter condition.
•Wye-delta starting reduces the initial current rush when the motor starters
are engaged.
•Thermal overloads protect the individual HPU motors from excessive