Ruska Instrument 7215 User manual

DIGITAL PRESSURE
CONTROLLER
MODEL 7215
MODEL 7215i
MODEL 7215xi
USER’S MANUAL
RUSKA INSTRUMENT CORPORATION
10311 WESTPARK DR., HOUSTON, TEXAS 77042
[phone] FAX: [phone]
E-MAIL: [e-mail] !http://www.ruska.com
Release: 7215-1D01
Revision: C
Date: 10/13/00

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WARRANTY
Ruska Instrument Corporation warrants its products to conform to or exceed the specifications as set forth
in its catalogs in use at the time of sale and reserves the right, at its own discretion, without notice and
without making similar changes in articles previously manufactured, to make changes in materials, designs,
finish, or specifications. Ruska Instrument Corporation warrants products of its own factory against defects
of material or workmanship for a period of one year from date of shipment.
Liability of Ruska Instrument Corporation under this warranty shall be limited to replacing, free of charge
(FOB Houston, Texas), any such parts proving defective within the period of this warranty, but will not be
responsible for transportation charges or consequential damages.
This warranty is not made for products manufactured by others which are illustrated and described in Ruska
catalogs or incorporated in Ruska products in essentially the same form as supplied by the original
manufacturer. However, Ruska Instrument Corporation agrees to use its best efforts to have original
suppliers make good their warranties.

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COPYRIGHT NOTICE
Copyright © 1997 by Ruska Instrument Corporation. All rights reserved. This document may not be
reproduced in part or in whole without the express written consent of Ruska Instrument Corporation.
DISCLAIMER
No representations or warranties are made with respect to the contents of this user’s manual. Further, Ruska
Instrument Corporation reserves the right to revise this manual and to make changes from time to time in
the content hereof without obligation to notify any person of such revision.
TRADEMARK NOTICE
®is a registered trademark of Ruska Instrument Corporation.
Trademarks or tradenames are subject to state and federal laws concerning their unauthorized use or other
infringements. The fact that the product marks or names in this manual do not bear a trademark symbol
DOES NOT mean that the product name or mark is not registered as a trademark or tradename. Any queries
concerning the ownership or existence of any trademarks or tradenames mentioned in this manual should be
independently confirmed with the manufacturer or distributor of the product.

iv
REVISION NOTICE
RELEASE
NUMBER REV DATE OF
RELEASE DESCRIPTION
7215-1D01 A 08/30/97 Original release
7215-1D01 B 08/01/99 Incorporated 7215iand 7215xi
7215-1D01 C 10/13/00 Changes in Section 7.2 per DC/RO-22717.

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REVISION HISTORY
RELEASE 7215-1D01 Revision A (8/30/97)
Original release
RELEASE 7215-1D01 Revision B (08/01/99)
Incorporated 7215iand 7215xi
Per ECO 17806
RELEASE 7215-1D01 Revision C (10/13/00)
Changes in Section 7.2 per
DC/RO-22717

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SAFETY SUMMARY
The following are general safety precautions that are not related to any specific procedures and do not
appear elsewhere in this publication. These are recommended precautions that personnel must understand
and apply during equipment operation and maintenance to ensure safety and health and protection of
property.
KEEP AWAY FROM LIVE CIRCUITS
Operating personnel must at all times observe safety regulations. Do not replace components or make
adjustments inside the equipment with the voltage supply connected. Under certain conditions, dangerous
potentials may exist when the power control is in the off position due to charges retained by capacitors. To
avoid injuries, always remove power from, discharge, and ground a circuit before touching it.
DO NOT SERVICE OR ADJUST ALONE
Do not attempt internal service or adjustment unless another person capable of rendering aid and
resuscitation is present. RESUSCITATION
Personnel working with or near dangerous voltages shall be familiar with modern methods of resuscitation.
Such information may be obtained from your local American Medical Association.
ELECTRO STATIC DISCHARGE SENSITIVE PARTS
CAUTION: Electrostatic discharge sensitive (ESDS) is applied to low power, solid-state
parts which could be damaged or destroyed when exposed to discharges of static
electricity. Maintenance personnel are often not aware that an ESDS part has
been damaged or destroyed because electrostatic discharges at levels less than
4,000 volts cannot be seen, felt, or heard.
When the ESDS symbol appears between a paragraph number and paragraph title, the entire
paragraph and all subparagraphs shall be considered ESD sensitive. When the ESDS symbol appears
between a step number and the step test, the step shall be considered ESD sensitive.
COMPRESSED GAS
Use of compressed gas can create an environment of propelled foreign matter. Pressure system safety
precautions apply to all ranges of pressure. Care must be taken during testing to ensure that all pneumatic
connections are properly and tightly made prior to applying pressure. Personnel must wear eye protection to
prevent injury.
PERSONAL PROTECTIVE EQUIPMENT
Wear eye protection approved for the materials and tools being used.
INERT GASES
Operation of pressure equipment may be accompanied by the discharge of inert gases to the atmosphere.
The result is a reduction of oxygen concentration. Therefore, it is strongly suggested that exhaust gases not
be trapped in the work area.

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TABLE OF CONTENTS
WARRANTY ...............................................................................................................................ii
COPYRIGHT NOTICE...............................................................................................................iii
REVISION NOTICE ...................................................................................................................iv
REVISION HISTORY..................................................................................................................v
SAFETY SUMMARY..................................................................................................................vi
TABLE OF CONTENTS............................................................................................................vii
SECTION 1: GENERAL INFORMATION
1.1 INTRODUCTION.............................................................................................. 1
1.2 GENERAL INFORMATION.............................................................................. 1
1.3 FEATURES...................................................................................................... 1
1.4 STANDARD EQUIPMENT & OPTIONS........................................................... 2
SECTION 2: THEORY OF OPERATION
2.1 INTRODUCTION.............................................................................................. 5
2.2 POWER SUPPLY ............................................................................................ 5
2.3 ELECTRONICS MODULE................................................................................ 6
2.3.1 CONTROL BOARD ........................................................................... 6
2.3.2 MICROPROCESSOR BOARD .......................................................... 6
2.3.3 ANALOG CONTROL BOARD............................................................ 7
2.3.4 IEEE-488 INTERFACE...................................................................... 7
2.3.5 FRONT PANEL.................................................................................. 7
2.4 PNEUMATICS MODULE.................................................................................. 8
2.4.1 MEASURE MODE PNEUMATICS................................................... 10
2.4.1.1 REFERENCE PORT........................................................ 10
2.4.1.1.1 BAROMETRIC SENSOR ............................. 11
2.4.1.2 TEST PORT .................................................................... 11
2.4.1.3 VENT PROCEDURE........................................................ 11
2.4.2 CONTROL MODE PNEUMATICS................................................... 11
2.4.2.1 PRESSURE SUPPLY PORT ........................................... 11
2.4.2.2 VACUUM SUPPLY (EXHAUST) PORT ........................... 11
2.4.2.3 PRESSURE CONTROL................................................... 11
2.5 CONTROL STRATEGY ................................................................................. 12
2.5.1 INNER VS OUTER CONTROL LOOP............................................. 12

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2.5.2 LOW OVERSHOOT MODE............................................................. 12
2.5.3 NORMAL MODE.............................................................................. 12
2.5.4 ALIGNMENT OF INNER LOOP WITH OUTER LOOP..................... 12
2.5.4.1 VACUUM AND SIMULATED ABSOLUTE SYSTEMS...... 12
2.5.5 PID CONTROL................................................................................ 13
2.6 TRANSDUCER MODULE.............................................................................. 13
2.6.1 QUARTZ BOURDON TUBE SENSOR (TRANSDUCER01)............. 13
2.6.2 SENSOR BOARD............................................................................ 15
2.6.3 LINEARIZATION TERM................................................................... 15
2.6.4 AUXILIARY SENSORS.................................................................... 16
2.6.4.1 CASE REFERENCE VACUUM SENSOR........................ 16
2.7 SOFTWARE................................................................................................... 16
2.7.1 SAFETY CONSIDERATIONS.......................................................... 16
2.7.1.1 PREVENTING OPERATOR ERRORS............................. 16
2.7.1.2 PNEUMATIC ERRORS.................................................... 16
2.7.1.3 SHUTOFFS ..................................................................... 16
2.7.1.4 OVEN CONTROL............................................................ 16
2.7.1.5 PRESSURE READING AND CORRECTION................... 17
SECTION 3: INSTALLATION
3.1 INTRODUCTION............................................................................................ 19
3.2 UNPACKING THE DPC................................................................................. 19
3.3 CAUTIONS .................................................................................................... 20
3.4 POWERING UP THE DPC............................................................................. 20
3.4.1 OBSERVING THE DPC’S FULL SCALE RATING........................... 20
3.5 PNEUMATIC CONNECTIONS....................................................................... 20
3.5.1 PRESSURE SUPPLY PORT ........................................................... 21
3.5.2 EXHAUST PORT............................................................................. 21
3.5.2.1 ABSOLUTE MODELS.......................................................... 21
3.5.3 TEST PORT .................................................................................... 21
3.5.4 REFERENCE PORT........................................................................ 21
3.5.5 VACUUM TRANSDUCER INSTALLATION ..................................... 22

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SECTION 4: LOCAL OPERATION
4.1 TUTORIAL..................................................................................................... 27
4.2 MEASURING PRESSURE............................................................................. 29
4.2.1 SELECTING MODE OF OPERATION............................................. 29
4.2.1.1 SIMULATED ABSOLUTE INSTRUMENTS...................... 29
4.2.2 SELECTING PRESSURE UNITS.................................................... 29
4.2.3 DEFINING A NEW PRESSURE UNIT............................................. 29
4.2.4 CHANGING THE NUMBER OF DECIMALS.................................... 30
4.2.5 SETTING THE ALARM LIMITS ....................................................... 30
4.2.6 USING HEAD PRESSURE CORRECTION..................................... 30
4.2.7 ZEROING........................................................................................ 31
4.3 CONTROLLING PRESSURE......................................................................... 31
4.3.1 SETTING THE PRESSURE SETPOINT.......................................... 31
4.3.2 ENTERING/EXITING CONTROL MODE......................................... 31
4.3.3 SETTING SLEW RATE ................................................................... 31
4.3.4 CONTROL BAND............................................................................ 32
4.3.5 STEPPING ...................................................................................... 32
4.3.5.1 SETTING STEP SIZE...................................................... 32
4.3.6 JOGGING........................................................................................ 32
4.3.7 OPTIMIZING CONTROLLER .......................................................... 32
4.3.7.1 CHANGES IN LOAD VOLUME........................................ 33
4.3.7.2 ADDITIONAL TUNING PARAMETERS ........................... 33
4.3.7.2.1 BIAS, FREQUENCY, STABILITY.................. 33
4.4 PROGRAMMING SEQUENCES.................................................................... 34
4.4.1 STORING A SEQUENCE IN MEMORY........................................... 34
4.4.2 PREPARING TO PROGRAM .......................................................... 34
4.4.3 ENTERING A NEW PROGRAM...................................................... 35
4.4.4 AUTOMATICALLY GENERATING A PROGRAM............................ 35
4.4.5 CHANGING THE NAME OF A PROGRAM...................................... 36
4.4.6 CHANGING AN EXISTING PROGRAM........................................... 36
4.4.7 CHANGING THE CONFIGURATION STORED WITH A
PROGRAM...................................................................................... 37
4.4.8 RUNNING A PROGRAM................................................................. 37
4.4.9 SWEEP TEST ................................................................................. 38

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4.5 CONFIGURATION......................................................................................... 38
4.5.1 CALIBRATION PASSWORD........................................................... 38
4.5.2 TEST ACCESS PASSWORD.......................................................... 38
4.5.3 BAR GRAPH MAXIMUM.................................................................. 39
4.5.4 KEY CLICK...................................................................................... 39
4.5.5 DATE/TIME ..................................................................................... 39
4.6 MEMORY CARD............................................................................................ 40
4.6.1 CARD SUPPORT............................................................................ 40
4.6.2 SAVING/RESTORING SETUP INFORMATION .............................. 40
4.6.3 SAVING/RESTORING CALIBRATION INFORMATION................... 40
4.6.4 SAVING/RESTORING PROGRAMS ............................................... 40
4.7 SYSTEM SOFWARE UPDATE PROCEDURE .............................................. 41
SECTION 5: REMOTE OPERATION
5.1 CAPABILITIES............................................................................................... 43
5.1.1 IEEE-488......................................................................................... 43
5.1.2 RS-232 ............................................................................................ 44
5.2 REMOTE/LOCAL OPERATION..................................................................... 44
5.3 CONFIGURATION......................................................................................... 45
5.4 DEVICE MESSAGES..................................................................................... 45
5.4.1 SCPI COMMAND FORMAT............................................................. 45
5.4.2 SCPI RESPONSE FORMAT............................................................ 46
5.4.3 ANSI/IEEE 488.2-1987 COMMAND SUMMARY.............................. 46
5.4.4 SCPI COMMAND SUMMARY.......................................................... 46
5.4.5 EXAMPLE SCPI COMMANDS......................................................... 49
5.4.6 SCPI STATUS REGISTERS............................................................ 50
5.5 6005 INTERFACE PANEL EMULATION........................................................ 51
5.6 SERIAL OPERATION .................................................................................... 51
5.7 DRUCK DPI-510 EMULATION COMMAND SUMMARY ................................ 52
5.7.1 SUPPORTED COMMANDS ............................................................ 52
5.7.2 RESPONSE FORMATS .................................................................. 53
5.7.3 RESET CONDITIONS..................................................................... 53
5.7.4 KEYBOARD ENTRY........................................................................ 53