Edwards STP-iX455 User manual

MT-64E-002-J
STP Series Turbomolecular Pumps
STP-iX455/iXL455 Series
Instruction Manual
Copyright 2016 Edwards Japan Limited. All rights reserved. Printed in Japan.
Read through the Safety Precautions and
each section of this Manual carefully before
using the STP pump.
Keep this Manual in a place where you can
quickly access it at any time.

This product has been manufactured under a quality management system certified to ISO 9001:2008
Declaration of Conformity
We,
Manufacture: Edwards Japan Limited
1078-1, Yoshihashi, Yachiyo-shi, Chiba, 276-8523, Japan
EU Representative: Edwards
Innovation Drive, Burgess Hill, West Sussex, RH15 9TW, UK
declare under our sole responsibility, as manufacturer and person within the EU authorised to
assemble the technical file, that the product(s)
Product Name: Turbomolecular pump
Model Number: STP-iX455/iXL455 series
Accessories Covered: Power Unit: iPS-240, Display Unit: iDT-001
Communication Interface (EtherCAT)
to which this declaration relates is in conformity with the following standard(s) or other normative
document(s)
EN1012-2:1996, A1:2009 Compressors and Vacuum Pumps.
Safety Requirements. Vacuum Pumps
EN61010-1:2010 Safety Requirements for Electrical Equipment for Measurement,
Control and Laboratory Use. General Requirements
EN61326-1:2013 Electrical equipment for measurement, control and laboratory Use.
EMC requirements. General requirements
(Immunity: Industrial locations, Emission: Class A)
EN61000-6-2:2005 Electromagnetic compatibility (EMC). Generic standards.
Immunity for industrial environments
EN55011:2009, A1:2010 Industrial, scientific and medical equipment - Radio-frequency
disturbance characteristics (Group1, Class A)
EN50581:2012 Technical Documentation for the Assessment of Electrical and Electronic
Products with respect to the Restriction of Hazardous Substances
and fulfils all the relevant provisions of
2006/42/EC Machinery Directive
2014/35/EU Low Voltage Directive
2014/30/EU Electromagnetic Compatibility (EMC) Directive
2011/65/EU* Restriction of Certain Hazardous Substances (RoHS) Directive
* i.e. The product(s) contain less than - 0.1wt% for hexavalent chromium, lead, mercury, PBB and PBDE; 0.01wt% for
cadmium - in homogeneous materials (subject to the exemptions allowed by the Directive). The RoHS Directive does not
legally apply to industrial vacuum equipment until July 2019 (July 2017 for instruments).
Note: This declaration covers all product serial numbers from the date this Declaration was
signed onwards.
VI-DOC-64-006
M
anufacture:
Y
uji Kato, TMP Technical Senior Manager
,
Edwards Japan
Limited
5
th
June
. 201
6
,
Yachiyo
Date and Place
EU representative:
Ian Stones
,
Vice President, Technology
, Edwards
6
th
June
. 201
6
, Burgess Hill
Date and Place

STP-iX455/iXL455 Series Instruction Manual
1
SAFETY PRECAUTIONS
The Safety Precautions in this Manual constitute guidelines to protect operators, the STP pump
and its peripheral equipment.
To avoid personal injury and prevent product and/or peripheral equipment damage, observe the
Safety Precautions as well as the general safety rules (your country’s laws, regulations, safety
standards and so on).
If the equipment is used in a manner not specified by Edwards, the protection provided by the
equipment may be impaired.
SYMBOLS
The following symbols are used in this manual:
Death or Serious Personal Injury
Failure to follow the guidelines marked with this symbol may result in death or
serious personal injury.
Minor Personal Injury, Product and/or Peripheral equipment Damage
Failure to follow the guidelines marked with this symbol may result in minor
personal injury, product and/or peripheral equipment damage.
NOTICE
Items you must follow during operation and maintenance.
◇ Symbols as Marked on the Equipment
ATTENTION : refer to this manual.
Edwards Japan Limited (abbreviated to Edwards throughout this manual) cannot perfectly
anticipate circumstances of all of hazards or problems.
The scope of anticipation is limited to the precautions included in the
and specified in this manual.

STP-iX455/iXL455 Series Instruction Manual
2
◇ The STP pump is provided with a high-speed rotor. Secure the STP pump according to the
specified method. Failure to do so may lead to serious personal injury, product and/or
peripheral equipment damage if any abnormality/error occurs in the rotor.
◇ The STP pump operates at high temperatures while the baking heater is in operation.
NEVER touch the STP pump and its peripheral equipment while the baking heater is in
operation.
Operators can burn hands.
◇ Execute the following to prevent an accident caused by the gas.
Check the properties of the gas to be used, referring to the Material Safety Data Sheet
(MSDS) you obtain from the gas supplier. (explosive・combustible・toxic・corrosive, etc)
And, keep MSDS and a safety advice of gas supplier.
Warn of the danger of the gas with the warning label when the use gas is hazardous
chemical material.
Always execute gas purge in the pump with the inert gas, and then exhaust residual
gases thoroughly from the STP pump when removing the STP pump from the vacuum
equipment.
Secure safety by wearing personal protective equipment when using the gas which
might influence damage health. In addition, take appropriate measure for depending
upon the properties of the gas to be used
◇ Exhaust residual gas thoroughly when disposing of the STP pump. If the STP pump is used
for any toxic or reactive gas, always clean the STP pump and dispose of it as industrial
waste in accordance with guidelines given by the national and/or local government. Residual
gas in the STP pump may cause an accident, for certain gases, which may involve serious
injury or death.

STP-iX455/iXL455 Series Instruction Manual
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◇ NEVER use any gas that is not specified as usable in this Manual. The use of such gas may
corrode the STP pump and damage it.
◇ Always check the STP pump has stopped, then turn OFF the primary power supply and
isolate the electrical energy source (Lockout/Tagout) on the vacuum equipment before
proceeding to any of the following operations. Failure to do so may cause the STP pump to
rotate accidentally, which may injure operators seriously or result in electric shock.
Connect or disconnect cables;
Perform inspections such as deposit and/or the air cooling fan; or
Perform investigations into probable causes and action/measures taken in the event of
occurrence of a problem.
◇ When removing or installing the pump or at maintenance and inspection, follow the
precautions below. Failure to do so might hurt your back or cause injuries due to occurrence
of an accident such as fall.
Use a crane or the like when lifting the heavy product of 18 kg or more.
When lifting by hands for unavoidable reason, two or more people must always conduct
it.
◇ When "emergency off" (EMO) circuit is installed in the vacuum equipment, consider the
following to stop the STP pump safely when the EMO circuit operates.
When the EMO circuit operates, atmosphere might be introduced in the STP pump
depending upon the backing-pump. Unite the exhaust gas system to prevent
atmosphere from being introduced into the STP pump when the EMO circuit operates.
(example: shut the valve) When atmosphere is introduced into the STP pump, the touch
down bearing may not operate normally.
◇ Connect the cables securely. NEVER bend nor place heavy objects on the cable. Doing so
may result in electric shock or product damage.
◇ NEVER remove the splinter shield from the STP pump. Doing so may result in product
damage.
◇ DO NOT put foreign objects into the STP pump. Doing so may result in product damage.
◇ Always use the power voltage specified on the nameplates of the STP pump and the
external power supply unit. Wire the power cable securely. Incorrect wiring may result in
electric shock or product damage.
◇ The wipes used for clean the flange of the pump might become hazardous waste depending
upon the solvent (alcohol). Dispose of the contaminated wipes appropriately according to the
regulations of each national and/or local government.
◇ NEVER turn OFF the external power supply while the STP pump is rotating. Doing so may
result in product damage.
◇ Perform investigations into probable causes and remove them before restarting the STP
pump in the event of the occurrence of a problem. The use of the abnormal STP pump may
result in product damage.
◇ DO NOT move the STP pump while the STP pump is in operation. Doing so may result in
product damage.

STP-iX455/iXL455 Series Instruction Manual
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INTRODUCTION
Thank you very much for purchasing Edwards’ turbomolecular pump.
The turbomolecular pump is designed to be installed in the vacuum equipment to exhaust
gases from it.
This manual covers all items necessary to ensure safe installation, operation and
maintenance of the following series of the STP-iX455/iXL455 turbomolecular pump:
Model Name Specification
STP- iX455 Compact type, Integrated control unit,
High-vacuum type
STP- iX455C Compact type, Integrated control unit,
Corrosion resistant type*1
STP- iXL455 Compact type, Integrated control unit,
Low-vibration type, High-vacuum type
STP- iXL455C Compact type, Integrated control unit,
Low-vibration type, High-vacuum type,
Corrosion resistant type*1
In this manual, the above STP-iX455/iXL455 pump series is collectively referred to as the
"STP pump".
*1 : Corrosion resistant type: STP pump with anti-corrosive treatment (responding to chlorine, fluorine or other system gases)

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APPLIED STANDARDS
The STP pump conforms to the following directives and standards:
◇ Applied Directives
EC Machinery directive
EC Low voltage directive
EC Electromagnetic compatibility directive
◇ Applied Standards
EN1012-2
EN61010-1
EN61326 (class A)
EN55011 (class A)
UL61010-1 (Electrical Equipment for Measurement, Control, and Laboratory Use)
◇ Electromagnetic compatibility
This product is a class A product according to EN61326, and a group 1, class A
product according to EN 55011. This means that this product does not generate
and/or use intentionally radio-frequency energy, in the form of electromagnetic
radiation, inductive and/or capacitive coupling, for the treatment of material or
inspection / analysis purpose and that it is suitable for use in all establishments other
than domestic and those directly connected to a low voltage power supply network
which supplies buildings used for domestic purposes.
This product may have potential difficulties in ensuring electromagnetic compatibility in
other than industrial environments, due to conducted as well as radiated disturbances.
This product must not be used in residential areas because it may cause interference if
used in residential areas.
PRECAUTIONS
1) No part of this manual may be reproduced in any form by any means without prior
written permission from Edwards.
2) Edwards pursues a policy of continuing improvement in design and performance of this
product. The right is, therefore, reserved to vary specifications and design without
notice. Understand that the product you purchased and its contents including
specifications described in this manual may differ.
REQUEST
If you find inaccuracies or errors in this manual, advise distributor or the nearest Service
office.

STP-iX455/iXL455 Series Instruction Manual
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LIMITED WARRANTY
This WARRANTY applies to the customer to whom Edwards has delivered this product.
1. WARRANTY PERIOD:
Edwards warrants this product against defects for a period of two (2) years from the
date of delivery or during the period specified in the agreement made by and between
the customer and Edwards.
2. ITEM WARRANTED:
1) This warranty applies only to the product delivered from Edwards to the customer.
2) If any defect is found during this period, Edwards will, at its option, repair or
recondition the product free of charge. The costs for repair or replacement of the
product after the warranty period has passed will be at your own charge.
3. DISCLAIMER:
Edwards makes no warranty with respect to any damage occurred due to any of the
following during the warranty period:
1) Handling, operation or maintenance other than that specified herein;
2) Failure to follow any of the warnings or cautions enumerated under
or ;
3) Installation, operation or maintenance using parts which are not specified by Edwards;
4) Maintenance personnel other than those authorized by Edwards or Service office have
disassembled, reconditioned, or tampered the product;
5) Defect resulting from the not-specified use of the product.
6) When the product is used under special conditions without obtaining the written
consent of Edwards (Particular gases, strong magnetic field and the radiation are
added to the product.);
7) Defect resulting from deposit;
8) Water cooling system defect resulting from water quality used;
9) Defect resulting from the installation of the product (Exclude the installation by
authorized personnel.)
10) Deterioration in the external because of use (Discoloration, scratches and so forth)
11) Product damage occurred during transport or other factors not attributable to Edwards;
12) Product breakage or damage due to natural disasters, fire or other external factors;
13) Deterioration in the basic performance due to the use of the product beyond limits of
the use;
14) Any direct, incidental or consequential damage resulting from the use of the product;
15) When continuously operated without overhaul after the WARNING indication from the
STP pump;
16) Overhaul and replacement of maintenance parts;

STP-iX455/iXL455 Series Instruction Manual
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4. SPARE PARTS: ●Touch down bearing
(When exchanging the touch down bearing, contact Service office)
●Air-cooling unit (optional accessory)

STP-iX455/iXL455 Series Instruction Manual
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TABLE OF CONTENTS
SAFETY PRECAUTION
INTRODUCTION
PRECAUTIONS
REQUEST
LIMITED WARRANTY
1 Precautions for Safe Operation of the STP Pump............................................. 1-1
1.1 Usable Gases...................................................................................................................... 1-1
1.2 Maintenance and Inspection Precautions ........................................................................... 1-1
1.3 Labels.................................................................................................................................. 1-2
2 Operation Principle of the STP Pump................................................................ 2-1
3 Unpacking ......................................................................................................... 3-1
3.1 Unpacking the STP Pump................................................................................................... 3-1
3.2 Accessories ......................................................................................................................... 3-1
4 Installation of the STP Pump............................................................................. 4-1
4.1 Name and Function of Each Part........................................................................................ 4-1
4.1.1 Name and Function of the Pump ........................................................................... 4-1
4.1.2 Name and Function of the Control Unit.................................................................. 4-3
4.2 Precautions Before Installation ........................................................................................... 4-6
4.2.1 Operating Environment .......................................................................................... 4-6
4.2.2 Installation Area ..................................................................................................... 4-8
4.2.3 Bench ..................................................................................................................... 4-8
4.3 How to Install the STP Pump .............................................................................................. 4-9
4.3.1 Cleaning the Seal................................................................................................. 4-10
4.3.2 STP Pump Installation Positions.......................................................................... 4-11
4.3.3 How to Secure the STP Pump ............................................................................. 4-12
4.3.4 Legs for Securing the Base.................................................................................. 4-16
4.3.5 Vacuum Piping ..................................................................................................... 4-17
4.3.6 Connecting the Purge Port (For the corrosion resistant pump) ........................... 4-19
4.3.7 Connecting the Vent Valve .................................................................................. 4-20
4.4 External Power Supply Unit .............................................................................................. 4-22
4.5 Connecting the DC Power Cable ...................................................................................... 4-22
4.6 Connecting to Vacuum Equipment ................................................................................... 4-24
4.6.1 Connecting to Power............................................................................................ 4-24
4.6.2 Emergency Off Circuit (EMO Circuit) ................................................................... 4-24
5 Baking, Cooling the STP Pump and Gas Pumping ........................................... 5-1
5.1 Baking the STP Pump......................................................................................................... 5-1
5.1.1 Attaching a Baking Heater ..................................................................................... 5-1
5.2 Cooling the STP Pump........................................................................................................ 5-2
5.3 Air-cooling Unit U0-64 ......................................................................................................... 5-4
5.3.1 Parts List ................................................................................................................ 5-4
5.3.2 Installation Procedure ............................................................................................ 5-4
5.3.3 Maintenance........................................................................................................... 5-4
5.4 Air-cooling Unit U1-64 ......................................................................................................... 5-5
5.4.1 Parts List ................................................................................................................ 5-5
5.4.2 Installation Procedure ............................................................................................ 5-5
5.4.3 Maintenance........................................................................................................... 5-5
5.5 Gas Pumping ...................................................................................................................... 5-6

STP-iX455/iXL455 Series Instruction Manual
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5.5.1 How to Introduce a Purge Gas (For corrosion resistant pump) ............................. 5-6
6 How to Start/Stop the STP Pump ...................................................................... 6-1
6.1 Before Starting .................................................................................................................... 6-1
6.2 Start Procedures ................................................................................................................. 6-1
6.3 Stop Procedures ................................................................................................................. 6-2
6.4 Powering ON....................................................................................................................... 6-2
6.5 Pump Operation .................................................................................................................. 6-2
6.5.1 Input Operation Port Setting .................................................................................. 6-2
6.5.2 Starting/Stopping the STP Pump ........................................................................... 6-3
6.5.3 Starting the STP Pump after Stopping................................................................... 6-4
6.5.4 Starting the STP Pump after a Safety Function Operates ..................................... 6-4
6.6 Powering OFF ..................................................................................................................... 6-4
6.7 LED ..................................................................................................................................... 6-5
7 Remote Input/Output Signal Connector............................................................. 7-1
7.1 Input Signal Pins ................................................................................................................. 7-2
7.1.1 Input Operation Port Setting .................................................................................. 7-5
7.1.2 Rotation INHIBIT Signal......................................................................................... 7-5
7.2 Output Signal Pins .............................................................................................................. 7-6
8 Vent Valve Output, Air-cooling Unit Output, and General-purpose Output ........ 8-1
8.1 Vent Valve Output ............................................................................................................... 8-1
8.2 Air-cooling Unit Output, and General-purpose Output........................................................ 8-2
8.2.1 Connector X7 ......................................................................................................... 8-2
8.2.2 Using as a General-purpose Power Supply........................................................... 8-2
9 Serial Communication Protocol ......................................................................... 9-1
9.1 Serial Communication ......................................................................................................... 9-1
9.2 Connection and Setting Up ................................................................................................. 9-2
9.2.1 Serial Port .............................................................................................................. 9-2
9.2.2 Connecting the RS485 ........................................................................................... 9-3
9.2.3 Communication Parameter Setting ........................................................................ 9-4
9.2.4 Input Operation Port Setting .................................................................................. 9-4
9.2.5 Serial Communication Timeout Setting.................................................................. 9-5
9.2.6 Recommended items about communication cable installation .............................. 9-6
9.3 Protocol Specifications........................................................................................................ 9-9
9.3.1 General Description ............................................................................................... 9-9
9.3.2 Standard Transmission Frame (in the RS232/RS485 Single Point Connection)... 9-9
9.3.3 Control Command (in the RS232/RS485 Single Point Connection) .................... 9-10
9.3.4 Query Command (in the RS232/RS485 Single Point Connection)...................... 9-11
9.3.5 Transmission Data Format................................................................................... 9-12
9.3.6 Frame Control (Checksum).................................................................................. 9-12
9.3.7 Error Control......................................................................................................... 9-13
9.3.8 Transmission Frame in the RS485 Multi-point Connection ................................. 9-13
9.3.9 Control Command in the RS485 Multi-point Connection ..................................... 9-14
9.3.10 Query Command in the RS485 Multi-point Connection....................................... 9-15
9.3.11 Broadcasting Command in the RS485 Multi-point Connection............................ 9-16
9.3.12 Application note.................................................................................................... 9-17
9.4 Command Specifications .................................................................................................. 9-21
9.4.1 Command List ...................................................................................................... 9-21
9.4.2 ReadMeas............................................................................................................ 9-22
9.4.3 Command............................................................................................................. 9-23
9.4.4 ReadFailMess ...................................................................................................... 9-24
9.4.5 ReadModFonct..................................................................................................... 9-26
9.4.6 ReadVersion ........................................................................................................ 9-28
9.4.7 ReadCounters ...................................................................................................... 9-29
9.4.8 ReadMotorTemp .................................................................................................. 9-30
9.4.9 ReadEvents.......................................................................................................... 9-31
9.4.10 SetSpeedSetPoint................................................................................................ 9-32

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9.4.11 ReadSpeedSetPoint............................................................................................. 9-33
9.4.12 ReadModFonctWithWarning................................................................................ 9-34
9.4.13 ReadMeasValue................................................................................................... 9-36
9.4.14 ReadOptionFunc .................................................................................................. 9-38
9.4.15 SetOptionFunc ..................................................................................................... 9-41
9.4.16 ReadCondition ..................................................................................................... 9-43
9.4.17 ReadEventsWithTime .......................................................................................... 9-45
10 STP-Link and Display Unit .............................................................................. 10-1
10.1 STP-Link............................................................................................................................ 10-1
10.2 Display Unit ....................................................................................................................... 10-2
11 Safety Functions ..............................................................................................11-1
11.1 Power Failure .................................................................................................................... 11-1
11.1.1 Operation at a Power Failure ............................................................................... 11-1
11.1.2 Operation after a Power Recovery....................................................................... 11-2
11.2 Abnormal State of Magnetic Bearing (Disturbance) ......................................................... 11-2
11.3 Excessive Vibration (Disturbance) .................................................................................... 11-2
11.4 Motor Driver Overload (DRV Overload) ............................................................................ 11-2
11.5 Overheating inside the STP Pump (MOTOR Overheat)................................................... 11-3
11.6 Overheating inside the Control Unit (CNT Overheat) ....................................................... 11-3
11.7 Overspeed......................................................................................................................... 11-3
12 WARNING Function ........................................................................................ 12-1
12.1 WARNING Function .......................................................................................................... 12-1
12.2 Contents of WARNING Function ...................................................................................... 12-2
12.2.1 Damage Limit ....................................................................................................... 12-2
12.2.2 Pump Run Time Over .......................................................................................... 12-2
12.2.3 Imbalance............................................................................................................. 12-2
12.3 WARNING Function Setting.............................................................................................. 12-3
13 Troubleshooting, Maintenance, and Inspection............................................... 13-1
13.1 Troubleshooting Immediately after Failure Occurs ........................................................... 13-1
13.1.1 After Power Failure .............................................................................................. 13-1
13.1.2 After Other Abnormality/Error .............................................................................. 13-1
13.2 Troubleshooting ................................................................................................................ 13-2
13.2.1 Indication of "FAILURE" LED ............................................................................... 13-2
13.2.2 No Indication of the "FAILURE" LED ................................................................... 13-6
13.3 Maintenance and Inspection ............................................................................................. 13-7
13.3.1 Cleaning and Decontamination............................................................................ 13-8
13.3.2 Inspecting the Deposit.......................................................................................... 13-8
13.4 Maintenance...................................................................................................................... 13-9
13.4.1 Recommended overhaul intervals ....................................................................... 13-9
13.4.2 Standard replacement parts................................................................................. 13-9
13.4.3 Recommended maintenance intervals for main parts ....................................... 13-10
13.4.4 Transport for Repair or Overhaul ....................................................................... 13-11
14 Storage and Disposal ...................................................................................... 14-1
14.1 Storage of the STP Pump ................................................................................................. 14-1
14.2 Disposal............................................................................................................................. 14-1
15 Specifications and Accessories ....................................................................... 15-1
15.1 Specifications for the STP Pump ...................................................................................... 15-1
15.2 Accessories ....................................................................................................................... 15-3
15.3 Maintenance Parts ............................................................................................................ 15-3

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TABLES
Table 3.1 Accessories..................................................................................................................... 3-1
Table 3.2 Accessories for Corrosion Resistant Pump .................................................................... 3-1
Table 4.1 Operating Environment................................................................................................... 4-7
Table 4.2 Tightening Torque of Bolt ............................................................................................. 4-12
Table 4.3 Destructive Torque and Recommended Securing Bolt for Inlet Port Flange ............... 4-13
Table 4.4 Number of Claw Clamps by Size of Flange.................................................................. 4-14
Table 4.5 Suitable Parts for DC Power Cable .............................................................................. 4-22
Table 4.6 Pin Assignment for Connector X1................................................................................. 4-23
Table 6.1 Starting/Stopping the STP Pump (X2 REMOTE) ........................................................... 6-3
Table 6.2 Reset Operation (X2 REMOTE) ..................................................................................... 6-4
Table 6.3 LED Lamp Indications for Each State............................................................................. 6-5
Table 7.1 X2 REMOTE Input Signal Pins (1/2) .............................................................................. 7-2
Table 7.2 Input Operation Port Setting ........................................................................................... 7-5
Table 7.3 Rotation INHIBIT Signal Input......................................................................................... 7-5
Table 7.4 X2 REMOTE Output Signal Pins .................................................................................... 7-6
Table 7.5 Rated Contacts for Relays CR1 to CR7 ......................................................................... 7-7
Table 8.1 Vent Valve Operation Setting ......................................................................................... 8-1
Table 8.2 Pin Assignment for Connector X7................................................................................... 8-2
Table 8.3 Suitable Parts for Connector X7 ..................................................................................... 8-2
Table 9.1 Pin Assignment for Connector X3................................................................................... 9-2
Table 9.2 Communication Parameters ........................................................................................... 9-4
Table 9.3 Remote Operation Mode ................................................................................................ 9-4
Table 9.4 Serial Communication Time Out Setting ........................................................................ 9-5
Table 9.5 Transmission Control Characters ................................................................................... 9-9
Table 9.6 Pump Operation Commands ........................................................................................ 9-16
Table 9.7 Command List............................................................................................................... 9-21
Table 9.8 Pump Operation Commands ........................................................................................ 9-23
Table 9.9 Error Values .................................................................................................................. 9-25
Table 9.10 Pump Operation Mode.................................................................................................. 9-27
Table 9.11 Warning Value Bit Assign ............................................................................................. 9-35
Table 9.12 Parameter Setting Value............................................................................................... 9-39
Table 10.1 Functions of STP-Link .................................................................................................. 10-1
Table 11.1 States of Lamps and X2 REMOTE Output Signals at Power Failure........................... 11-1
Table 12.1 WARNING Function...................................................................................................... 12-1
Table 12.2 Default Setting of WARNING Function ......................................................................... 12-3
Table 13.1 Priority of Failure Signal................................................................................................. 13-2
Table 13.2 Error List ........................................................................................................................ 13-3
Table 13.3 Troubleshooting with No Indication of the "FAILURE" LED .......................................... 13-6
Table 13.4 Cleaning and Decontamination...................................................................................... 13-8
Table 13.5 Recommended Overhaul Period .................................................................................. 13-9
Table 15.1 Specifications for the STP Pump (1/2) ......................................................................... 15-1
Table 15.2 Accessories................................................................................................................... 15-3
Table 15.3 Optional Accessories .................................................................................................... 15-3
Table 15.4 Maintenance Parts........................................................................................................ 15-3

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FIGURES
Figure 2.1 Cross Sectional View of the STP Pump ......................................................................... 2-2
Figure 4.1 Configuration of the STP Pump...................................................................................... 4-2
Figure 4.2 Control Unit (Front panel) ............................................................................................... 4-3
Figure 4.3 Control Unit (Rear panel)................................................................................................ 4-5
Figure 4.4 Installation of the STP Pump to the Vacuum Equipment ............................................... 4-9
Figure 4.5 STP Pump Installation Positions................................................................................... 4-11
Figure 4.6 Positions of the Outlet Port on the Horizontally or Slanted Installed STP Pump....... 4-11
Figure 4.7 Example of Securing the STP Pump (When securing the inlet port with bolts) ........... 4-13
Figure 4.8 Example of Securing the STP Pump
(When securing the inlet port flange with claw clamps)................................................ 4-14
Figure 4.9 Example of Securing the STP Pump
(When installing the damper in the inlet port flange) .................................................... 4-15
Figure 4.10 Recommended Leg for Securing Base......................................................................... 4-16
Figure 4.11 Position of the Screw Holes for Legs............................................................................ 4-16
Figure 4.12 Connecting the Purge Port ........................................................................................... 4-19
Figure 4.13 Vent valve connection................................................................................................... 4-20
Figure 4.14 Example of a control method when introducing the atmosphere (in dashed line)........ 4-20
Figure 4.15 DC Power Cable ........................................................................................................... 4-22
Figure 5.1 Attaching Positions of the Baking Heater and Air-cooling Unit....................................... 5-2
Figure 5.2 Air-cooling Unit U0-64..................................................................................................... 5-3
Figure 5.3 Air-cooling Unit U1-64..................................................................................................... 5-3
Figure 5.4 Installation Procedure for Air-cooling Unit U0-64 ........................................................... 5-4
Figure 5.5 Installation Procedure for Air-cooling Unit U1-64 ........................................................... 5-5
Figure 6.1 Pump Operation (Method 1) ........................................................................................... 6-3
Figure 6.2 Pump Operation (Method 2) ........................................................................................... 6-3
Figure 6.3 "ROTATION" LED Indication .......................................................................................... 6-5
Figure 7.1 X2 REMOTE Pin Arrangement ....................................................................................... 7-1
Figure 7.2 X2 REMOTE Input Signal Pins ....................................................................................... 7-4
Figure 7.3 X2 REMOTE Output Signal Pins .................................................................................... 7-7
Figure 9.1 Serial Port ....................................................................................................................... 9-1
Figure 9.2 RS485 Connections ........................................................................................................ 9-3
Figure 9.3 Grounding example (Both ends grounding).................................................................... 9-6
Figure 9.4 Grounding example (single point grounding).................................................................. 9-6
Figure 9.5 Example of ring ferrite core installation .......................................................................... 9-7
Figure 9.6 Example of cable installation in metallic duct ................................................................. 9-7
Figure 9.7 Example of differential signal waveform ......................................................................... 9-8
Figure 9.8 Block diagram of communication process example ..................................................... 9-17
Figure 9.9 Example of answer resending process......................................................................... 9-18
Figure 9.10 Example of response when the command is sent continuously................................... 9-18
Figure 9.11 Example of command sending during answer data reply ............................................ 9-18
Figure 9.12 Example of communication cycle process ................................................................... 9-19
Figure 9.13 Example of command sending process ....................................................................... 9-20
Figure 9.14 Example of answer receiving process .......................................................................... 9-20
Figure 10.1 Display Unit iDT-001..................................................................................................... 10-2
Figure 12.1 WARNING Output......................................................................................................... 12-1
Figure 12.1 WARNING Output......................................................................................................... 12-1
Figure 13.1 Failure Output............................................................................................................... 13-2
Figure 15.1 External Appearance of the STP Pump (STP-iX455 series) ........................................ 15-4
Figure 15.2 External Appearance of the STP Pump (STP-iXL455 series) ...................................... 15-5
Figure 15.3 Label Affixing Positions for the STP Pump................................................................... 15-6

STP-iX455/iXL455 Series Instruction Manual
1-1
Installation
1 Precautions for Safe Operation of the STP Pump
1.1 Usable Gases
Chlorine or fluorine system gases can be used in the only corrosion resistant pumps (type
C or other models). When you use gases including alkaline metals, but excluding Li, gases
including Ga, Hg, In, or Sn, or HBr, contact Edwards.
◇ To prevent an accident, confirm the characteristics of gases to be used, referring
to the Material Safety Data Sheet (MSDS) you obtain from the gas supplier.
And, keep MSDS and a safety advice of gas supplier.
CAUTION
◇ NEVER use corrosive gases (chlorine, fluorine, or other system gases) in the STP
pump without anti-corrosion treatment.
◇ Introduce a dry N2gas (purge gas) to protect the inside of the STP pump when
using reactive or corrosive gas. The use of reactive or corrosive gas may result in
product damage.
◇ DO NOT use any pyrophoric gas.
◇ Cool the STP pump to prevent the STP pump from overheating when pumping
gases.
1.2 Maintenance and Inspection Precautions
Perform any maintenance or inspection of the STP pump, following Section 13,
"Troubleshooting, Maintenance, and Inspection".
CAUTION
◇ Always turn OFF the primary power, then turn OFF the primary power supply and
isolate the electrical energy source (Lockout/Tagout) on the vacuum equipment
before performing any maintenance or inspection.
◇ NEVER touch any portions other than those designated when performing
maintenance.
Careless touch may cause electric shock and/or a short-circuiting of the internal
circuit, resulting in product damage or a problem.

STP-iX455/iXL455 Series Instruction Manual
1-2
Installation
1.3 Labels
The following labels are affixed to the STP pump.
Read the contents of the labels before operation.
For the positions of the labels, see Figure 15.3, "Label Affixing Position for the STP
Pump".
1) STP Pump Installation Warning Label
This label describes installation of the STP pump.
Install the STP pump according to the precautions of Section 4, "Installation of the
STP Pump".
2) Rotational Direction Instruction Label
This label describes the rotational direction of the STP pump.
The STP pump rotates in this direction.
3) Hot Surface Warning Label
This label instructs operators so as not to touch the hot surface of the STP pump.
The control unit will become high temperature while the STP pump is in operation.
The use of the baking heater (optional accessory) may lead to a considerable rise in
temperatures outside the STP pump. This label warns operators so as not to burn
hands.

STP-iX455/iXL455 Series Instruction Manual
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Installation
2 Operation Principle of the STP Pump
The STP-iX455/iXL455 series pump is a series of a magnetically-levitated turbomolecular
pumps, featuring the following:
Oil free
Compact size (Integrated control unit)
Low vibration
High reliability
Figure 2.1 shows the cross sectional view of the STP pump. The STP pump is configured
so that rotor blade (1) and stator blade (2) are aligned alternately in the axial direction.
The rotor blade (1) is supported by the magnetic bearing without mechanical contact.
Therefore, the STP pump requires no lubrication oil, unlike conventional turbomolecular
pumps using ball bearings.
The magnetic bearing consists of 5 pairs of active magnetic bearings. The rotor is
supported in the radial direction by 4 pairs of active magnetic bearings that consist of
radial electromagnet (3). A pair of axial electromagnets (4) supports the rotor in the axial
direction.
Because the rotor is entirely magnetically supported, it rotates with low vibration.
Moreover, STP-iXL455 series, with which the structure of low vibration and low noise (6)
and (7) are equipped, suppresses vibration and noise more than STP-iX455 series.
There is less heat generated from magnetic bearings because there is no friction.
Therefore the STP pump requires no cooling. However, the STP pump does require
water-cooling or air-cooling during baking and gas pumping.
Taking into consideration an unexpected failure of the magnetic bearings, touch-down
bearings (5) coated with solid lubrication have been installed. They do not contact the
rotor during normal operation.
The status of the rotor and magnetic bearing is continuously monitored via circuits
detecting rotor displacement, rotational speed and pump temperature. If an
abnormality/error occurs, the rotor will stop.

STP-iX455/iXL455 Series Instruction Manual
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Installation
a) STP-iX455 Series
b) STP-iXL455 Series
Figure 2.1 Cross Sectional View of the STP Pump
(1) Rotor blade
(2) Stator blade
(3) Radial electromagnet
(4) Axial electromagnet
(5)
Touch down
bearing
(6) Structure for
reduce vibration level
(7) Structure for
electrical isolation

STP-iX455/iXL455 Series Instruction Manual
3-1
Installation
3 Unpacking
3.1 Unpacking the STP Pump
Check the following before unpacking the STP pump.
Check the package for bruises, breakage, wetness, and other.
If there is any abnormality/error or it is judged necessary to return the product,
contact Edwards or the distributor.
Check the contents of the package.
See Section 3.2, "Accessories".
◇ Be careful not to scratch the flange of the STP pump.
Before installing the STP pump, check whether or not there are scratches on the
surface.
◇ It is recommended to keep the packaging materials, such as the corrugated
fiberboard container and cushioning material for possible reuse.
3.2 Accessories
Table 3.1 Accessories
Item
Q
’
ty
Remarks
Instruction Manual
1
This manual
Inlet port cover
1
Outlet port cover
1
Connector for "X1 DC POWER" 1
Model: NJC–207–PF
(Nanaboshi Electric Mfg.Co,Ltd.)
Cable bushing Model: NJC–20–CB
(Nanaboshi Electric Mfg.Co,Ltd.)
Connector for "X2 REMOTE"
1
D
-
sub25 pin
Table 3.2 Accessories for Corrosion Resistant Pump
The accessories listed below are supplied to the corrosion resistant pump (type C or other
models) in addition to the accessories in Table 3.1.
Item
Q’ty
Remarks
Blank flange for purge port
1
KF
*1
10
Clamping ring for purge port
1
KF
*1
10
O
-
ring washer for purge port
1
KF
*1
10
*1 : ISO2861–1 (JIS–B–8365）

STP-iX455/iXL455 Series Instruction Manual
Installation
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