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DVC6200p
Instruction Manual
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Fisher DVC6200p, FIELDVUE Instruction Manual

Instruction Manual
D103563X012
Fisher™ FIELDVUE™ DVC6200p Digital Valve Controller
This manual applies to:
Device ID Number 0x1037 Device Revision 1 Hardware Revision 9 Firmware Revision 1.6.3.2.0 DD Revision 1.3/1.4 Instrument Level FD Current GSD FC051037 Profile Specific GSD PA139710 DTM Revision 1.0
February 2021
www.Fisher.com
Instruction Manual
D103563X012
February 2021
Contents
Section 1 Introduction and Specifications 3.
Scope of Manual 3..............................
Conventions Used in the Manual 3................
Description 3..................................
Specifications 3................................
Related Information 7...........................
Educational Services 7...........................
Section 2 Wiring Practices 11.............
Quick Connect Cable Entry 11....................
Communication Connections 12..................
Section 3 Configuration 13...............
Transducer Block Mode 13......................
Guided Setup 14...............................
Manual Setup 14...............................
Reponse Control 15............................
Travel/Pressure Control 15..................
Travel Deviation Fallback 16.................
Travel Tuning Set 16.......................
Pressure Tuning Set 19.....................
Outblock Selection 19......................
Change Tuning and Integral Setting 20........
Performance Tuning 21.....................
Input Characterization 21...................
Output Synchronize 16.....................
Instrument 22................................
Enter Assembly Specification 23..............
Units 26.....................................
Security 26...................................
Classic View 26.................................
Alert Setup 27.................................
Travel Alerts 27...............................
Travel Limits 28...............................
Travel History Alerts 29.........................
Pressure Alerts 31.............................
Pressure A/B Alerts 31..........................
Temperature Alerts 32.........................
Electronics Alerts 32...........................
Memory Alerts 33.............................
Block Alerts 33................................
Proximity Alerts 33............................
Calibration Alerts 34...........................
AI Limits 34..................................
Section 5 Viewing Device
Variables and Diagnostics 41...........
Overview 41...................................
Status and Primary Purpose Variables 41..........
Device Information 41.........................
Service Tools 42................................
Active Alerts 42...............................
Diagnostics 42................................
Variables 42..................................
Maintenance 43...............................
Section 6 Maintenance and
Troubleshooting 45...................
Replacing the Magnetic Feedback Assembly 46......
Module Base Maintenance 46.....................
Tools Required 46.............................
Component Replacement 46....................
Removing the Module Base 47..................
Replacing the Module Base 48...................
Submodule Maintenance 49......................
I/P Converter 49...............................
Printed Wiring Board (PWB) Assembly 51..........
Pneumatic Relay 52............................
Gauges, Pipe Plugs or Tire Valves 52..............
Terminal Box 53................................
Removing the Terminal Box 53..................
Replacing the Terminal Box 53...................
Stroking the Digital Valve Controller Output 54......
Instrument Troubleshooting 54...................
Section 7 Parts 59......................
Parts Ordering 59...............................
Parts Kits 59...................................
Parts List 60...................................
Housing 60...................................
Common Parts 61.............................
Module Base 61...............................
I/P Converter Assembly 61......................
Relay 61.....................................
Terminal Box 62...............................
PWB Assembly 62.............................
Pressure Gauges, Pipe Plugs, or
Tire Valve Assemblies 62.....................
DVC6215 Feedback Unit 62......................
Section 4 Calibration 35.................
Calibration Overview 35.........................
Calibration 35..................................
Auto 35......................................
Manual 36...................................
Relay 36.....................................
Supply Pressure Sensor 39......................
Pressure A or B Sensor 38.......................
Auxiliary Terminal Calibration 40..................
Appendix A Principle of Operation 69......
Digital Valve Controller Operation 69..............
Appendix B Device Diagnostics 71.........
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Appendix C Blocks 73...................
Physical Block 73...............................
Transducer Block 84............................
Analog Output Function Block 103................
Discrete Output Function Block 109...............
Analog Input Function Block 114..................
Discrete Input Function Block 120.................
Alarm Transducer Block 124......................
Logbook Function Block 140......................
Appendix D Module Definitions, IO Bytes,
and Data Length 145..................
Glossary 155...........................
Index 159.............................
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Introduction and Specifications
February 2021
Section 1 Introduction and Specifications
Installation, Pneumatic and Electrical Connections, and Initial Configuration
Refer to the DVC6200 Series Quick Start Guide (D103556X012) for DVC6200p installation, connection, and initial configuration information. If a copy of this quick start guide is needed scan or click the field support code at the right, contact your
Emerson sales office
or visit our website at Fisher.com.
Scope of Manual
This instruction manual is a supplement to the DVC6200 Series Quick Start Guide (D103556X012) that ships with every instrument. This instruction manual includes product specifications, reference materials, custom setup information, calibration and maintenance procedures, and replacement part details for the DVC6200p digital valve controller.
Scan or click to access field support
Note
All references to the DVC6200p digital valve controller include the DVC6205p base unit unless otherwise indicated.
Do not install, operate, or maintain a DVC6200p digital valve controller without being fully trained and qualified in valve, actuator, and accessory installation, operation, and maintenance. To avoid personal injury or property damage,
it is important to carefully read, understand, and follow all of the contents of this manual, including all safety cautions and warnings. If you have any questions about these instructions, contact your Emerson sales office before
proceeding.
Conventions Used in this Manual
Throughout this document, parameters are typically referred to by their common name or label.
Description
DVC6200p digital valve controllers are communicating, microprocessor‐based instruments. In addition to the traditional function of converting a digital signal to a pneumatic output pressure, the DVC6200p digital valve controller, using PROFIBUS PA communications protocol, gives easy access to information critical to process operation as well as process control. It includes AO, AI, DO, and two DI function blocks in addition to the physical and transducer blocks.
Using a compatible profibus configuration device, you can obtain information about the health of the instrument. You can also obtain asset information about the actuator or valve manufacturer, model, and serial number. You can set input and output configuration parameters and calibrate the instrument.
Using the PROFIBUS protocol, information from the instrument can be integrated into control systems.
The DVC6200p can be mounted on single or double‐acting sliding‐stem actuators, as shown in figure 1‐1, or on rotary actuators. It can also be integrally mounted to the Fisher GX control valve and actuator system, as shown in figure 1‐2. The DVC6200p mounts on most Fisher and other manufacturers' rotary and sliding‐stem actuators.
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Figure 1‐1 FIELDVUE DVC6200p Digital Valve Controller Mounted on a Fisher Sliding‐Stem Valve Actuator
X1182-1_profibus
Figure 1‐2. FIELDVUE DVC6200p Digital Valve Controller Integrally Mounted to a Fisher GX Control Valve and Actuator System
W9616_profibus
Instrument Blocks
The digital valve controller is a block‐based device. For detailed information on the blocks within the digital valve controller, see the Detailed Setup section of this manual.
The DVC6200p digital valve controller includes the physical and transducer block:
D Physical Block—The physical block contains the hardware specific characteristics associated with a device; it has no
input or output parameters. The physical block monitors and controls the general operation of other blocks within the device. For example, when the mode of the physical block is Out of Service, it impacts all function blocks.
D Transducer Block—The transducer block connects the analog output function block to the I/P converter, relay, and
travel sensor hardware within the digital valve controller.
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Introduction and Specifications
February 2021
Function Blocks
In addition to the physical and transducer block, the digital valve controller contains the following function blocks.
D Analog Output (AO) Function Block—The analog output function block accepts the output from another function
block (such as a PID block) and transfers it as an actuator control signal to the transducer block. If the DO block is selected, the AO block is not functional.
D Discrete Output (DO) Function Block—The discrete output function block processes a discrete set point and sends it
to a specified output channel, which can be transferred to the transducer block for actuator control. In the digital valve controller, the discrete output block provides both normally open or closed control and the ability to position the valve in 5% increments for coarse throttling applications. If the AO block is selected, the DO block is not functional.
D Analog Input (AI) Function Block—The analog input function block monitors the signal from a DVC6200p sensor or
internal measurement and provides it to another block.
D Discrete Input (DI) Function Block—The discrete input function block processes a single discrete input from a
DVC6200p and makes it available to other function blocks. In the digital valve controller, the discrete input function block can provide limit switch functionality and valve position proximity detection.
D Alarm Transducer Block—The Alarm Transducer Block manages the device alarms. Active alarms are monitored and
displayed as active. Working with the Logbook Block those alarms active and configured are time/date stamped and written to the Logbook block.
D Logbook Function Block—The Logbook Function Block will store any alarm that is active and configured to record an
occurrence of the alarm to the logbook. Logbook entries are written from active alarms in the Alarm Transducer Block. Each Logbook entry is time/date stamped. A maximum of 260 log entries are allowed.
Specifications
Specifications for the DVC6200p digital valve controller are shown in table 1‐1.
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Table 1‐1. Specifications
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D103563X012
Available Mounting
DVC6200p digital valve controller and DVC6215 feedback unit:
657/667 or GX actuators Fisher rotary actuators, applications
J Integral mounting to Fisher
J Integral mounting to
J Sliding‐stem linear
J Quarter‐turn rotary applications
DVC6205p base unit for 2 inch pipestand or wall mounting (for remote-mount)
The DVC6200p digital valve controller or DVC6215 feedback unit can also be mounted on other actuators that comply with IEC 60534-6-1, IEC 60534-6-2, VDI/VDE 3845 and NAMUR mounting standards.
Function Block Suite
Standard (throttling) control includes AO, AI, DO, and DI function blocks. Also included are a Logbook block and an Alarm Transducer block.
Function Block Execution Times
AO Block: 6 ms AI Block: 6 ms DO Block: 6 ms DI Block: 6 ms
Minimum Device Interval: 25 ms
Electrical Input
Voltage Level: 9 to 32 volts Maximum Current: 19 mA Reverse Polarity Protection: Unit is not polarity
sensitive Termination: Bus must be properly terminated per ISA SP50 guidelines
Digital Communication Protocol
PROFIBUS registered device Certified to PROFIBUS Profile 3.02
Supply Pressure
(1)
Minimum Recommended: 0.3 bar (5 psig) higher than maximum actuator requirements
Maximum: 10.0 bar (145 psig) or maximum pressure rating of the actuator, whichever is lower
-continued-
Supply Medium
Air or Natural Gas Supply medium must be clean, dry and
non-corrosive.
Per ISA Standard 7.0.01
A maximum 40 micrometer particle size in the air system is acceptable. Further filtration down to 5 micrometer particle size is recommended. Lubricant content is not to exceed 1 ppm weight (w/w) or volume (v/v) basis. Condensation in the air supply should be minimized.
Per ISO 8573-1
Maximum particle density size: Class 7 Oil content: Class 3 Pressure Dew Point: Class 3 or at least 10_C less than
the lowest ambient temperature expected
Output Signal
Pneumatic signal, up to full supply pressure
Minimum Span: 0.4 bar (6 psig) Maximum Span: 9.5 bar (140 psig) Action:
Steady-State Air Consumption
J Double, J Single Direct or J Reverse
(2)(3)
Standard Relay
At 1.4 bar (20 psig) supply pressure:
Less than 0.38 normal m At 5.5 bar (80 psig) supply pressure: Less than 1.3 normal m
3
/hr (14 scfh)
3
/hr (49 scfh)
Low Bleed Relay
At 1.4 bar (20 psig) supply pressure:
Average value 0.056 normal m
At 5.5 bar (80 psig) supply pressure:
Average value 0.184 normal m
Maximum Output Capacity
3
/hr (2.1 scfh)
3
/hr (6.9 scfh)
(2)(3)
At 1.4 bar (20 psig) supply pressure:
3
10.0 normal m
At 5.5 bar (80 psig) supply pressure:
29.5 normal m
Operating Ambient Temperature Limits
/hr (375 scfh)
3
/hr (1100 scfh)
(1)(4)
-40 to 85_C (-40 to 185_F)
-52 to 85_C (-62 to 185_F) for instruments utilizing the Extreme Temperature option (fluorosilicone elastomers)
-52 to 125_C (-62 to 257_F) for remote‐mount feedback unit
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Table 1‐1. Specifications (continued)
Introduction and Specifications
February 2021
Independent Linearity
(5)
Typical Value: ±0.50% of output span
Electromagnetic Compatibility
Meets EN 61326-1:2013 Immunity—Industrial locations per Table 2 of the EN 61326-1 standard. Performance is shown in table 1‐2 below. Emissions—Class A ISM equipment rating: Group 1, Class A
Lightning and Surge Protection—The degree of immunity to lightning is specified as Surge immunity in table 1‐2. For additional surge protection commercially available transient protection devices can be used.
Vibration Testing Method
Tested per ANSI/ISA‐75.13.01 Section 5.3.5. A resonant frequency search is performed on all three axes. The instrument is subjected to the ISA specified 1/2 hour endurance test at each major resonance.
Humidity Testing Method
Tested per IEC 61514-2
Electrical Classification
Hazardous Area Approvals
CSA— Intrinsically Safe, FISCO, Explosion‐proof,
Division 2, Dust Ignition‐proof FM— Intrinsically Safe, FISCO, Explosion‐proof,
Non‐Incendive, Dust Ignition‐proof ATEX— Intrinsically Safe, FISCO, Flameproof, Type n
Dust by intrinsic safety IECEx— Intrinsically Safe, FISCO, Flameproof, Type n
Dust by intrinsic safety and enclosure
Electrical Housing
CSA— Type 4X, IP66 FM— Type 4X, IP66 ATEX— IP66 IECEx— IP66
CUTR— Customs Union Technical Regulations
(Russia, Kazakhstan, Belarus, and Armenia) ESMA— Emirates Authority for Standardization and
Metrology - ECAS-Ex (UAE) INMETRO— National Institute of Metrology, Quality
and Technology (Brazil) KOSHA— Korean Occupational Safety & Health
Agency (South Korea)
KTL— Korea Testing Laboratory (South Korea) NEPSI— National Supervision and Inspection Centre
for Explosion Protection and Safety of Instrumentation (China)
PESO CCOE— Petroleum and Explosives Safety Organisation - Chief Controller of Explosives (India)
SANS— South African Bureau of Standards Contact your Emerson sales office
for
classification/certification specific information
Connections
Supply Pressure: 1/4 NPT internal and integral pad for mounting 67CFR regulator
Output Pressure: 1/4 NPT internal Tubing: 3/8‐inch recommended Vent: 3/8 NPT internal Electrical: 1/2 NPT internal or M20
Actuator Compatibility
Sliding‐Stem Linear
Linear actuators with rated travel between 6.35 mm (0.25 inch) and 606 mm (23.375 inches)
Quarter‐Turn Rotary
Rotary actuators with rated travel between 45 degrees and 180 degrees
(6)
Weight
DVC6200p
Aluminum: 3.5 kg (7.7 lbs) Stainless Steel: 8.6 kg (19 lbs)
DVC6205p: 4.1 kg (9 lbs) DVC6215: 1.4 kg (3.1 lbs)
Other Classifications/Certifications
Natural Gas Certified, Single Seal Device— CSA, FM, ATEX, and IECEx
Lloyds Register— Marine Type Approval CCC— China Compulsory Certification
CML— Certification Management Limited (Japan)
Construction Materials
Housing, module base and terminal box: A03600 low copper aluminum alloy (standard) Stainless Steel (optional)
Cover: Thermoplastic polyester Elastomers: Nitrile (standard)
Fluorosilicone (extreme temperature)
-continued-
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Table 1‐1. Specifications (continued)
Instruction Manual
D103563X012
Options
J Supply and output pressure gauges or J Tire valves J Integral mounted filter regulator J Low‐Bleed Relay
(7)
J Extreme Temperature
J Natural Gas Certified, Single Seal Device J Remote Mount
Contact your Emerson sales office
(8)
J Stainless Steel
or go to Fisher.com
for additional information.
Declaration of SEP
Fisher Controls International LLC declares this product to be in compliance with Article 4 paragraph 3 of the PED Directive 2014 / 68 / EU. It was designed and manufactured in accordance with Sound Engineering Practice (SEP) and cannot bear the CE marking related to PED compliance.
However, the product may bear the CE marking to indicate compliance with other applicable European Community Directives.
NOTE: Specialized instrument terms are defined in ANSI/ISA Standard 51.1 - Process Instrument Terminology.
1. The pressure/temperature limits in this document and any other applicable code or standard should not be exceeded.
2. Normal m
3. Values at 1.4 bar (20 psig) based on a single-acting direct relay; values at 5.5 bar (80 psig) based on double-acting relay.
4. Temperature limits vary based on hazardous area approval. Lower temperature limit for CUTR Ex d approval with fluorosilicone elastomers is -53_C (-63.4_F).
5. Not applicable for travels less than 19 mm (0.75 inch) or for shaft rotation less than 60 degrees. Also not applicable for digital valve controllers in long-stroke applications.
6. Rotary actuators with 180 degree rated travel require a special mounting kit; contact your Emerson sales office for kit availability
7. The Quad O steady-state consumption requirement of 6 scfh can be met by a DVC6200p with low bleed relay A option, when used with up to 4.8 bar (70 psi) supply of Natural Gas at 16_C (60_F). The 6 scfh requirement can be met by low bleed relay B and C when used with up to 5.2 bar (75 psi) supply of Natural Gas at 16_C (60_F).
8. 4‐conductor shielded cable, 18 to 22 AWG minimum wire size, in rigid or flexible metal conduit, is required for connection between base unit and feedback unit. Pneumatic tubing between base unit output connection and actuator has been tested to 91 meters (300 feet). At 15 meters (50 feet) there was no performance degradation. At 91 meters there was minimal pneumatic lag.
3
/hour - Normal cubic meters per hour at 0_C and 1.01325 bar, absolute. Scfh - Standard cubic feet per hour at 60_F and 14.7 psia.
Table 1‐2. EMC Summary Results—Immunity
Port Phenomenon Basic Standard Test Level
Electrostatic discharge (ESD) IEC 61000‐4‐2
Enclosure
I/O signal/control
Performance criteria: +/- 1% effect.
1. A = No degradation during testing. B = Temporary degradation during testing, but is self‐recovering.
2. Excluding Simulate function, which meets Performance Criteria B.
Radiated EM field IEC 61000‐4‐3
Rated power frequency magnetic field
Burst IEC 61000‐4‐4 Surge IEC 61000‐4‐5 Conducted RF IEC 61000‐4‐6
IEC 61000‐4‐8
4 kV contact 8 kV air
80 to 1000 MHz @ 10V/m with 1 kHz AM at 80% 1400 to 2000 MHz @ 3V/m with 1 kHz AM at 80% 2000 to 2700 MHz @ 1V/m with 1 kHz AM at 80%
30 A/m at 50/60 Hz
1 kV
1 kV
150 kHz to 80 MHz at 3 Vrms
Performance
Criteria
(2)
A
A
A
(2)
A
B A
(1)
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Introduction and Specifications
Related Information
PROFIBUS PA Installation and Wiring Guidelines
Refer to the DVC6200 Series Quick Start Guide (D103556X012) for installation and wiring information.
Related Documents
Other documents containing information related to the DVC6200p digital valve controller include:
February 2021
D DVC6200 Series Quick Start Guide (D103556X012
D CSA Hazardous Area Approvals - DVC6200 Series Digital Valve Controllers (D104203X012
D FM Hazardous Area Approvals - DVC6200 Series Digital Valve Controllers (D104204X012
D ATEX Hazardous Area Approvals - DVC6200 Series Digital Valve Controllers (D104205X012
D IECEx Hazardous Area Approvals - DVC6200 Series Digital Valve Controllers (D104206X012
D Device Setup and Accessing Communications and Calibration using Siemens SIMATIC Manager/PDM
(D103560X012
D Module Definitions, IO Bytes, and Data Length for DVC6200p PROFIBUS PA Digital Valve Controller (D104019X012
D Bulletin 62.1:DVC6200p FIELDVUE DVC6200p Digital Valve Controller (D103564X012
D Bulletin 62.1:DVC6200(S1) FIELDVUE DVC6200 Digital Valve Controller Dimensions (D103543X012
D Bulletin 62.1:Digital Valve Controller - Fisher FIELDVUE Digital Valve Controller Product Selection (D104363X012
All documents are available from your Emerson sales office or at Fisher.com.
)
)
)
)
)
)
)
)
)
Educational Services
)
For information on available courses contact:
Emerson Automation Solutions Educational Services - Registration Phone: +1-641-754-3771 or +1-800-338-8158 e‐mail: education@emerson.com emerson.com/fishervalvetraining
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Installation
February 2021
Section 2 Wiring Practices2‐2‐
Quick Connect Cable Entry
The DVC6200p is offered with a quick connect cable entry option, shown in figure 2‐1, for the PROFIBUS signal. The quick connect cable entry provides an easier and more reliable interface to PROFIBUS devices and support modules by providing a standard connection.
Figure 2‐1. Quick Connect Connector
1 (BROWN)
2 (GREEN/YELLOW)
1/2‐14 NPT
NOTE:
1. COLORS ARE WIRE COLORS.
GE61479-A
Note
The quick connect cable entry option is only available for intrinsically safe and non‐incendive installations.
3 (BLUE)
4 (GREY)
Refer to figure 7‐2 for identification of parts.
WARNING
Personal injury or property damage, caused by fire or explosion, can result from the discharge of static electricity. Connect a 14 AWG (2.08 mm gases are present. Refer to national and local codes and standards for grounding requirements.
To avoid static discharge from the plastic cover, do not rub or clean the cover with solvents. Clean with a mild detergent and water only.
To avoid personal injury or property damage, do not use the Quick Connect option on instruments in explosion‐proof or flameproof installations.
2
) ground strap between the digital valve controller and earth ground when flammable or hazardous
1. The quick connect cable entry should be installed on the digital valve controller at the factory. If it is, proceed to step 3. If not continue with step 2.
2. To install the Quick Connect:
a. Remove the terminal box cap (key 4) from the terminal box (key 3).
b. Apply sealant to the threads of the quick connector.
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c. Insert the wire pigtail into the desired conduit opening on the terminal box. Tighten the quick connector in the
conduit opening.
d. The instrument is not polarity sensitive. Connect the blue wire to the negative LOOP terminal in the terminal
box. Connect the brown wire to the positive LOOP terminal. Isolate the green/yellow wire inside of the DVC6200p, and ensure that the shield is totally isolated at the instrument end.
Note
The green/yellow wire is isolated inside the DVC6200p to help prevent ground loop issues.
e. Replace the terminal box cap on the terminal box and tighten until no gap remains. Secure the terminal box cap
by engaging the lock screw.
3. Connect the field wiring connector to the installed quick connector.
Communication Connections
A PROFIBUS PA secondary master interfaces with the DVC6200p digital valve controller from any wiring termination point in the segment.
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Section 3 Configuration3‐3‐
Figure 3‐1. Example of Typical Online Screen
Configuration
February 2021
Transducer Block Mode
Modes
The transducer block can be in one of two modes:
d Automatic (Auto)— This is the operational mode for this block. When the transducer block is in the Auto mode, all other functions blocks will function normally.
d Out of Service (OOS)— Placing the transducer block in Out of Service mode changes the output to the zero power (no I/P drive) condition.
Note
To setup and calibrate the instrument the transducer block mode must be in Auto and Write Locking (see page 26) must be Acyclic Writeable.
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Guided Setup
D Device Setup— This procedure, accessible from the Guided Setup tab, as shown in figure 3‐2, is used to configure
actuator and valve information, calibrate the valve assembly, and assign the tuning set for the valve assembly.
Figure 3‐2. Example of Typical Guided Setup Tab
Manual Setup
Manual Setup allows you to configure the digital valve controller to your application. Table 3‐1 lists the default settings for a standard factory configuration. You can adjust actuator response, set the various modes, alerts, ranges, travel cutoffs and limits. You can also restart the instrument and set the protection.
Table 3‐1. Factory Default Settings
Setup Parameter Default Setting
Travel Cutoff Hi Travel Cutoff Lo Travel Integral Gain Travel Calibration Trigger
Travel Integral Enable Travel Integral Limit Hi Travel Integral Limit Lo Travel Integral Deadzone
Pressure Cutoff Hi Pressure Cutoff Lo Pressure Integral Deadzone Pressure Integral Hi Limit Pressure Integral Lo Limit
Input Characterization Shutdown Trigger Shutdown Recovery Output Block Timeout
99.5%
0.5% 0 repeats/min No
On 30%
-30%
0.25%
99.5%
-0.5%
0.25%
50.0%
-50.0% Linear
All Off All Auto Recovery 600 sec
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Note
The DVC6200p may keep the Transducer Block Mode Out‐of‐Service if the instrument is not properly mounted.
To setup and calibrate the instrument, the Transducer Block Mode must be AUTO and the output block (AO or DO) must be OOS. Protection must be None.
When performing procedures where you are prompted to change the mode, changes to Protection will be made automatically. If you have a host system that overrides transducer block parameters ensure that the Protection setting is not will result in transducer block parameters being overwritten. Refer to page 26 for additional information on setting Protection.
Configuration
February 2021
left as None. Doing so
Response Control
Travel/Pressure Control
D Travel/Pressure State indicates if the instrument is being used for travel control (position control) or as an I/P
(pressure control).
D Travel/Pressure Select
CAUTION
When using Pressure Fallback Manual Recovery or Pressure Fallback Auto Recovery, the valve travel has the potential of moving rapidly, causing potential process instability when returning to Travel Control.
Note
Travel / Pressure Select must be set to Travel for double acting actuators.
Travel / Pressure Select determines if the instrument is setup for travel position or pressure control. Select Travel, Pressure, Travel with Pressure Fallback/Auto recovery or Travel with Pressure Fallback/Manual Recovery. If the travel sensor fails, and Travel with Pressure Fallback/Auto Recovery is selected, it will return to travel control when the travel sensor starts working again. Travel with Pressure Fallback/Manual recovery will stay in pressure control until Travel Pressure Select is changed to Travel or Travel with Pressure Fallback/Auto recovery. It is not necessary to enable the Travel Sensor Alert for Pressure Fallback to occur.
D Travel Cutoff Hi defines the high cutoff point for the travel in percent (%) of pre‐characterized setpoint. Above this
cutoff, the travel target is set to 123.0% of the ranged travel. Travel Cutoff Hi is deactivated by setting it to 125.0%.
D Travel Cutoff Lo defines the low cutoff point for the travel in percent (%) of pre‐characterized setpoint. Below this
cutoff, the travel target is set to -23%. A Travel Cutoff Lo of 0.5% is recommended to help ensure maximum shutoff seat loading. Travel Cutoff Lo is deactivated by setting it to -25.0%
D Pressure Tune Cutoff Hi defines the high cutoff point for the pressure in percent (%) of pre‐characterized setpoint.
Above this cutoff, the pressure target is set to 123.0%. A Pressure Cutoff Open of 99.5% is recommended to ensure valve goes fully open. Pressure Tune Cutoff Hi is deactivated by setting it 125%.
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D Pressure Tune Cutoff Lo defines the low cutoff point for the pressure in percent (%) of pre‐characterized setpoint.
Below this cutoff, the pressure target is set to -23%. A Pressure Tune Cutoff Lo of 0.5% is recommended to help ensure maximum shutoff seat loading. Pressure Tune Cutoff Lo is deactivated by setting it to -25.0%.
D Pressure Range Hi is the high end of output pressure range. Enter the pressure that corresponds with 100% valve
travel when Zero Power Condition is closed, or 0% valve travel when Zero Power Condition is open. This pressure must be greater than the Pressure Range Lo.
D Pressure Range Lo is the low end of the output pressure range. Enter the pressure that corresponds to 0% valve
travel when Zero Power Condition is closed, or 100% valve travel when Zero Power Condition is open. This pressure must be less than the Pressure Range Hi.
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Output Synchronize
Output Sync allows a bumpless transition from travel control mode to pressure control mode in the event of control feedback switch.
D Bleed Rate is the time, in %/sec, for the transition to the user-specified setpoint. Select Enable or Disable.
Travel Deviation Fallback
D Travel Deviation Fallback occurs when a gross deviation exists between set point and actual travel. It switches to
Pressure Control and no longer uses the travel sensor to position the valve Select Enabled or Disabled.
D Fallback Point is the point, in percent (%) of travel, at which the instrument switches to Pressure Control.
D Fallback Time is the time, in seconds, that is required to reach the Travel Deviation Fallback Point.
D Deadband defines the Travel Deviation Fallback Deadband in percent (%).
D Minimum Supply is the minimum air supply, in psi or percent (%), required for the pressure control mode to activate
during Travel Deviation Fallback
Travel Tuning Set
WARNING
Changes to the tuning set may cause the valve/actuator assembly to stroke. To avoid personal injury or property damage caused by moving parts, keep hands, tools, and other objects away from the valve/actuator assembly.
There are eleven Travel Tuning Sets to choose from. Each tuning set provides a preselected value for the digital valve controller gain settings.
Tuning set C provides the slowest response and M provides the fastest response. Table 3‐2 lists the proportional gain, velocity gain and minor loop feedback gain values for preselected tuning sets.
In addition, you can specify Expert tuning and individually set the proportional gain, velocity gain, and minor loop feedback gain. Individually setting or changing any tuning parameter or running the Performance Tuner will automatically change the tuning set to X (expert).
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Table 3‐2. Gain Values for Preselected Travel Tuning Sets
Tuning Set Travel Proportional Gain Travel Velocity Gain Travel Minor Loop Feedback Gain
C D E F G
H
I
J K L
M
X (Expert) User Adjusted User Adjusted User Adjusted
Note
Use Expert tuning if standard tuning has not achieved the desired results.
4.4
4.8
5.5
6.2
7.2
8.4
9.7
11.3
13.1
15.5
18.0
3.0
3.0
3.0
3.1
3.6
4.2
4.8
5.6
6.0
6.0
6.0
35 35 35 35 34
31 27 23 18 12 12
Configuration
February 2021
Table 3‐3 provides tuning set selection guidelines for Fisher and Baumann™ actuators. These tuning sets are recommended starting points. After you finish setting up and calibrating the instrument, you may have to select either a higher or lower tuning set to get the desired response.
For an actuator not listed in table 3‐3, you can estimate a starting tuning set by calculating the casing or cylinder volume. Then, find an actuator in table 3‐3 with the closest equivalent volume and use the tuning set suggested for that actuator.
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Table 3‐3. Actuator Information for Initial Setup
Actuator
Manufacturer
Fisher
Baumann
NOTE: Refer to table 3‐5 for feedback connection (magnet assembly) information.
1. X = Expert Tuning. Proportional Gain = 4.2; Velocity Gain = 3.0; Minor Loop Feedback Gain = 18.0
2. Travel Sensor Motion in this instance refers to the motion of the magnet assembly.
3. Values shown are for Relay A and C. Reverse for Relay B.
Actuator Model Actuator Size Actuator Style
25 50
585C & 585CR
657
667
1051 & 1052
1061
1066 20, 27, 75 Piston Dbl w/o Spring Specify
1066SR
2052
3024
GX
Air to Extend
Air to Retract Towards the top of the instrument
Rotary
60
68, 80
100, 130
30, 30i 34, 34i, 40, 40i 45, 45i, 50, 50i
46, 46i, 60, 60i, 70,
70i & 80‐100
30, 30i 34, 34i, 40, 40i 45, 45i, 50, 50i
46, 46i, 60, 60i, 70,
70i, 76, 76i & 80‐100
20, 30
33 40
60, 70
30 40 60
68, 80, 100, 130
20
27, 75
1 2 3
GA 1.21 GA 1.31 GA 1.41
225 750 K
1200 M
16 32 54
10 25 54
Piston Dbl w/ or w/o Spring. See actuator
instruction manual and
nameplate.
Spring & Diaphragm
Spring & Diaphragm
Spring & Diaphragm
(Window-mount)
Piston Dbl w/o Spring
Piston Sgl w/Spring
Spring & Diaphragm
(Window-mount)
Spring & Diaphragm
Spring & Diaphragm
Spring & Diaphragm
Starting
Tuning Set
E F
J
L
M
H
K L
M H
K L
M H
I
K
M
J K L
M
G
L
H
K
M
E
H
K
(1)
X
C E
H
E
H
J
Travel Sensor Motion
Relay A or C
User Specified
Away from the top of the instrument
Towards the top of the instrument
Away from the top of the instrument
Depends upon pneumatic connections. See
description for Travel Sensor Motion
Depends upon pneumatic connections. See
description for Travel Sensor Motion
Mounting Style Travel Sensor Motion
A
B
C
D
Away from the top of the instrument
For Po operating mode (air opens):
Towards the top of the instrument
For P
operating mode (air closes):
s
Away from the top of the instrument
Air to Open
Towards the top
of the instrument
Away from the top of the instrument
Away from the top of the
Towards the top of the
Towards the top of the
Away from the top of the
Away from the top of the
Specify
(2)
(3)
instrument
instrument
instrument
instrument
Air to Close
instrument
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Configuration
February 2021
Pressure Tuning Set
WARNING
Changes to the tuning set may cause the valve/actuator assembly to stroke. To avoid personal injury or property damage caused by moving parts, keep hands, tools, and other objects away from the valve/actuator assembly.
There are twelve Pressure Tuning Sets to choose from. Each tuning set provides a preselected value for the digital valve controller gain settings.
Tuning set B provides the slowest response and M provides the fastest response. Tuning set B is appropriate for controlling a pneumatic positioner. Table 3‐4 lists the proportional gain, pressure integrator gain and minor loop feedback gain values for preselected tuning sets.
In addition, you can specify Expert tuning and individually set the pressure proportional gain, pressure integrator gain, and pressure minor loop feedback gain. Individually setting or changing any tuning parameter will automatically change the tuning set to X (expert).
Table 3‐4. Gain Values for Preselected Pressure Tuning Sets
Tuning Set Pressure Proportional Gain Pressure Integrator Gain Pressure Minor Loop Feedback Gain
B C D E F G
H
I
J K L
M
X (Expert) User Adjusted User Adjusted User Adjusted
0.5
2.2
2.4
2.8
3.1
3.6
4.2
4.8
5.6
6.6
7.8
9.0
0.3
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
35 35 35 35 35 34
31 27 23 18 12 12
Note
Use Expert tuning only if standard tuning has not achieved the desired results.
Out Block Selection
Out Block Selection defines which output function block, Analog or Discrete, will control the setpoint of the valve.
Note
Select the AO function block if throttling control is required. Select the DO function block for on/off connectivity.
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Change Tuning and Integral Settings
Travel Tuning
D Travel Tuning Set, there are eleven Travel Tuning Sets to choose from. Each tuning set provides a preselected value
for the digital valve controller gain settings.
D Travel Proportional Gain, for travel control tuning only. Changing this parameter will also change the tuning set to
Expert.
D Travel Velocity Gain, for travel control tuning only. Changing this parameter will also change the tuning set to
Expert.
D Travel MLFB Gain is the minor loop feedback gain for travel control only. Changing this parameter will also change
the tuning set to Expert.
D Travel Integral Gain (also called reset), is the ratio of the change in output to the change in input, based on the
control action in which the output is proportional to the time integral of the input.
D Travel Integral Dead Zone is a window around the Primary Setpoint in which the integral action is disabled. The dead
band is configurable from 0 to 2% corresponding to a symmetric window from 0% to +/-2% around the Primary Setpoint. Integral Dead Zone is used to eliminate friction induced limit cycles around the Primary Setpoint when the integrator is active. This dead zone value is used during the Auto Calibration of Travel procedure even if the travel integral is disabled; in the case of Auto Calibration travel failures with piston actuators, this value should be set to 1%. Default value is 0.26%.
D Travel Integral Limit Hi provides an upper limit to the integrator output. The high limit is configurable from 0 to
100% of the I/P drive signal.
D Travel Integral Limit Lo provides a lower limit to the integrator output. The low limit is configurable from -100 to 0%
of the I/P drive signal.
D Travel Integral Enable is used to enable the integral setting to improve static performance by correcting for error
that exists between the travel target and actual travel.
Pressure Tuning
D Pressure Tuning Set, there are twelve Pressure Tuning Sets to choose from. Each tuning set provides a preselected
value for the digital valve controller gain settings.
D Pressure Proportional Gain, for pressure control tuning only. Changing this parameter will also change the tuning
set to Expert.
D Pressure Integral Gain (also called reset) is the ratio of the change in output to the change in input, based on the
control action in which the output is proportional to the time integral of the input. This feature is used during pressure control for greater accuracy during pressure control/fallback. Changing this parameter will also change the tuning set to Expert.
D Pressure Integral Dead Zone is a window around the Primary Setpoint in which the integral action is disabled. The
dead band is configurable from 0 to 2%.
D Pressure Integral Limit Hi provides an upper limit to the integrator output. The high limit is configurable from 0 to
100% of the I/P drive signal.
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Configuration
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D Pressure Integral Limit Lo provides a lower limit to the integrator output. The low limit is configurable from -100 to
0% of the I/P drive signal.
D Pressure MLFB Gain is the minor loop feedback gain for the pressure control tuning set. Changing this parameter
will also change the tuning set to Expert.
Tuner
WARNING
During tuning the valve may move, causing process fluid or pressure to be released. To avoid personal injury and property damage caused by the release of process fluid or pressure, isolate the valve from the process and equalize pressure on both sides of the valve or bleed off the process fluid.
Tuner is used to determine digital valve controller tuning. It will move the valve slightly and monitor the effects of small tuning changes until an optimum control response is achieved. Because the tuner can detect internal instabilities before they become apparent in the travel response, it can generally optimize tuning more effectively than manual tuning.
Input Characterization
Input Characterization defines the relationship between the travel target and the setpoint received from the output block. Travel target is the output from the characterization function.
Linearization Table
You can select from the three fixed input characteristics shown in figure 3‐3 or you can select a custom characteristic. Figure 3‐3 shows the relationship between the travel target and travel set point for the fixed input characteristics.
You can specify 21 points on a custom characteristic curve. Each point defines a travel target, in % of ranged travel, for a corresponding set point, in % of ranged set point. Set point values range from -25.0% to 125%. Before modification, the custom characteristic is linear. You cannot modify
Linearization Type
Select the linearization type:
No linearization (default is linear) Linearization table Equal percentage— a valve flow characteristic where equal increments of valve stem travel produce equal percentage
changes in existing flow, or Quick opening— a valve flow characteristic where most of the change in flow rate takes place for small amounts of stem travel from the closed position. The flow characteristic curve is basically linear through the first 40 percent of stem travel.
the custom points if the Input Characterization is set to custom.
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Figure 3‐3. Travel Target Versus Ranged Set Point, for Various Input Characteristics (Zero Power Condition = Closed)
125
100
Travel Target, %
0
-25
-25 0 125100
Set Point, %
Input Characteristic Linear
125
100
125
100
Travel Target, %
0
-25
-25 0 125100
Set Point, %
Input Characteristic Equal Percentage
Travel Target, %
0
-25
A6535‐1
-25 0 125100
Input Characteristic Quick Opening
Set Point, %
Instrument
Actuator Style— select spring & diaphragm, piston double‐acting without spring, piston single‐acting with spring, or piston double‐acting with spring.
Valve Type— enter the type of valve, sliding‐stem or rotary, on which the instrument is mounted.
Feedback Connection— refer to table 3‐5 for Feedback Connection options. Choose the assembly that matches the
actuator travel range.
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Note
As a general rule, do not use less than 60% of the magnet assembly travel range for full travel measurement. Performance will decrease as the assembly is increasingly subranged.
The linear magnet assemblies have a valid travel range indicated by arrows molded into the piece. This means that the hall sensor (on the back of the DVC6200p housing) has to remain within this range throughout the entire valve travel. The linear magnet assemblies are symmetrical. Either end may be up.
Configuration
February 2021
Table 3‐5. Feedback Connection Options
Magnet Assembly
SStem #7 4.2-7 0.17-0.28 -
SStem #19 8-19 0.32-0.75 -
SStem #25 20-25 0.76-1.00 -
SStem #38 26-38 1.01-1.50 -
SStem #50 39-50 1.51-2.00 -
SStem #110 51-110 2.01-4.125 -
SStem #210 111-210 4.126-8.25 -
SStem #1 Roller > 210 > 8.25 60-90_
RShaft Window #1 - - 60-90_
RShaft Window #2 - - 60-90_
RShaft End Mount - - 60-90_
mm Inch Degrees
Travel Range
Maximum Supply Pressure— enter the maximum supply pressure in psi, bar, or kPa, depending on what was selected for pressure units.
Relay Type— enter the Relay Type. There are three categories of relays that result in combinations from which to select.  Relay Type: The relay type is printed on the label affixed to the relay body: A = double‐acting or single acting B = single‐acting, reverse C= single‐acting, direct  Lo Bleed: The label affixed to the relay body indicates it is a low bleed version.
Zero Power Condition— identifies whether the valve is open or closed when instrument power is lost. If you are unsure how to set this parameter, disconnect the segment loop power to the instrument. The resulting valve travel is the Zero Power Condition.
Note
For bumpless restart of the valve on power-cycle ensure the IO_OPTS “Use Failsafe Value per Type on restart” parameter is enabled. This parameter can be enabled in the Analog Output or Discrete Output block under the Manual Setup tab. Select Classic View > AO or
DO Block > Mode and Manufacturer Specific > Use Failsafe Value per Type on Restart.
Enter Assembly Specification
Valve
D Valve Manufacturer— enter the identification number of the manufacturer of the valve on which the instrument is
mounted.
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D Valve Model Number— enter the design letter or type number for the valve on which the instrument is mounted.
D Valve Serial Number—enter the serial number of the valve on which the instrument is mounted.
D Valve Type— enter the type of valve, sliding‐stem or rotary, on which the instrument is mounted.
D Valve Size— enter the size of the valve on which the instrument is mounted.
D Valve Class— enter the valve pressure class rating.
D Rated Travel— the nominal stroke of the valve in units that are the same as that of OUT_SCALE. Read only.
D Actual Travel— enter the actual travel in inches or mm for sliding-stem valves, or in degrees of rotation for rotary
valves.
D Shaft Stem Diameter— enter the valve stem diameter in inches or millimeters.
D Packing Type— enter the valve packing construction .
D Inlet Pressure— enter the valve inlet pressure in psig, kPa, Bar, inHg, inH
D Outlet Pressure— enter the valve outlet pressure in psig, kPa, Bar, inHg, inH
O, or kg/cm2.
2
O, or kg/cm2.
2
Trim
D Seat Type— enter the valve seat type.
D Leak Class— enter the valve leak class.
D Port Diameter— enter the valve port diameter in inches or mm.
D Port Type— enter the valve port type.
D Flow Direction— enter the flow direction through the valve.
D Push Down To— enter the effect on valve movement when the stem is moved down.
D Flow Tends To— enter the effect on valve travel with increasing flow.
D Unbalanced Area— enter the valve unbalanced area in in
2
, cm2 or mm2.
Actuator
D Actuator Manufacturer— enter the manufacturer's identification number of the actuator on which the instrument is
mounted.
D Actuator Model Number— enter the type number for the actuator on which the instrument is mounted.
D Actuator Serial Number— enter the serial number for the actuator on which the instrument is mounted.
D Actuator Size— enter the size of the actuator on which the instrument is mounted.
D Actuator Fail Action— sets actuator action to be performed upon loss of actuator air pressure .
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Configuration
February 2021
D Feedback Connection —refer to table 3‐5 for Feedback Connection options. Choose the assembly that matches the
actuator travel range.
D Travel Sensor Motion— establishes the proper valve travel sensor (feedback) rotation/movement. For quarter‐turn
actuators determine rotation by viewing the rotation of the magnet assembly from the back of the instrument.
WARNING
If you answer YES to the prompt for permission to move the valve when setting the Travel Sensor Motion, the instrument will move the valve through its full travel range. To avoid personal injury and property damage caused by the release of pressure or process fluid, isolate the valve from the process and equalize pressure on both sides of the valve or bleed off the process fluid.
Note
Travel Sensor Motion in this instance refers to the motion of the magnet assembly. Note that the magnet assembly may be referred to as a magnetic array in user interface tools.
For instruments with relay A or C If increasing air pressure at output A causes the magnet assembly to move up, or the actuator shaft to rotate counterclockwise, enter “Counterclockwise/Towards Top of Instrument.” If it causes the magnet assembly to move down, or the actuator shaft to rotate clockwise, enter “Clockwise/Away From Top of Instrument.”
For instruments with relay B If decreasing air pressure at output B causes the magnet assembly to move up, or the actuator shaft to rotate counterclockwise, enter “Counterclockwise/Towards Top of Instrument.” If it causes the magnet assembly to move down, or the actuator shaft to rotate clockwise, enter “Clockwise/Away From Top of Instrument.”
D Lever Style— enter the lever style for rotary actuators as either Pivot Point or Rack and Pinion.
D Lever Arm Length—defines the lever arm length for rotary actuators.
D Effective Area — enter the actuator effective area in in
2
, cm2, or mm2.
D Air— select Opens or Closes, indicating the effect of increasing air pressure on the valve travel.
D Upper Bench Set— enter the upper actuator operating pressure.
D Lower Bench Set— enter the lower actuator operating pressure.
D Nominal Supply Pressure— enter the nominal instrument supply pressure.
D Spring Rate— enter the actuator spring rate in lbsSin or NSm.
Reference
D Trim Style 1— enter the valve trim style.
D Trim Style 2— enter the valve trim style.
D Stroking Time Open— enter the time required to stroke the valve from closed to open.
D Stroking Time Close— enter the time required to stroke the valve from open to closed.
Note
Stroking Time Open and Stroking Time Close are used as a point of reference only; they do not reflect the actual time required to stroke the valve from closed to open or open to closed.
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February 2021
D Field Serial Number— enter the instrument serial number.
Units
Select the appropriate units for your application.
D Temperature Unit— _C or _F
Instruction Manual
D103563X012
D Pressure Unit— psig, kPa, Bar, inHg, inH
D Travel Unit— cm, mm, inch, or deg
D Length Unit— cm, mm, or inch
D Area Unit— in
D Spring Rate Unit— lbsSin or NSm
2
, cm2, or mm
2
O, or kg/cm
2
2
Security
Write Locking— select the appropriate level of software write protection.
D Acyclic Writeable— all parameters are writeable (not locked).
D Acyclic Write Refused— acyclic writes to all parameters are denied, except WRITE_LOCKING, TAB_ENTRY and
ACTUAL_POST_READ_NUMBER parameter.
Protection
To configure a parameter in the digital valve controller Protection must be set at or above that parameters protection level. In addition, protection is provided for various transducer block parameters, as indicated in the Protect Category column of table C‐3, to prevent inadvertently overwriting key data by the host system or user.
D None— will not protect any transducer block parameters.
D Calibration— will protect only Calibration transducer block parameters.
D Setup and Calibration— will protect only Setup and Calibration transducer block parameters.
D All— will protect all transducer block parameters.
Note
Device Setup Auto Travel and Manual Travel automatically change transducer block protection for the user.
See table C‐3 for individual parameter details.
Classic View
Classic view allows you to view all of the variables in the Physical, Transducer, and function blocks.
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Configuration
February 2021
Alert Setup
Instrument Alert Conditions, when enabled, detect many operational and performance issues that may be of interest. To view these alerts, you must open the appropriate status screen on a host system.
Configure Alert Category— select Failed, Maintenance, or Advisory.
Failed A failed alert indicates a failure within the device that will make the device or some part of the device non‐operational.
Maintenance A maintenance alert indicates the device or some part of the device needs maintenance soon.
Advisory An advisory alert indicates informative conditions that do not have a direct impact on the device's primary functions.
Supervision— if Supervision is selected, the Binary Message (BM) is immediately active. If Supervision is not selected, you can choose between active and inactive BM.
Logbook— indicate if the alert should be stored in the Logbook function block. The logbook function block contains binary messages and status information about the stored alerts. Each logbook entry is time/date stamped. A maximum of 260 log entries are allowed.
Alarm Transducer
Active Messages
Active Messages provides an overview of the active alerts. Select the appropriate tab within Configure > Alert Setup to view and set alarm limits. Alert details are covered by tab below.
Mode
The Alarm transducer block supports two modes of operation.
D Automatic (Auto)
D Out of Service (OOS)
Travel Alerts
Note
The alerts contained in this section are valid for both travel and pressure control.
Travel Target
Travel target is the output from the characterization function.
Travel
Travel displays the actual position of the valve in percent (%) of calibrated travel.
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Travel Deviation
D Travel Deviation—Travel Deviation displays the absolute difference in percent between Travel Target and Actual
Travel.
D Deviation Alert Point— the alert point for the difference, expressed in percent (%), between the travel target and the
actual travel. When the difference exceeds the alert point for more than the Travel Deviation Time, the Travel Deviation Alert is set.
D Deviation Time— the time, in seconds, that the travel deviation must exceed the Travel Deviation Alert Point before
the alert is set.
Travel Open
This alert is active if the Travel goes above the Travel Open Alert Point.
D Open Alert Point— the value of the travel in percent (%) or ranged travel, which, when exceeded, sets the Travel
Open Alert.
D Open Deadband— the travel, in percent (%) of ranged travel, required to clear a Travel Open alert once it has been
set.
Travel Closed
This alert is active if the Travel goes below than the Travel Closed Alert Point.
D Closed Alert Point— set when the value of the travel, in percent (%) of ranged travel, goes below the Travel Closed
Alert Point.
D Closed Deadband— the travel, in percent (%) of ranged travel, required to clear a Travel Closed alert once it has been
set.
Travel Limits
Travel Limit Hi Hi
This alert is active if the Travel exceeds the Travel Hi Hi Alert point. See figure 3‐4.
D Hi Hi Alert Point— the value of the travel, in percent (%) of ranged travel, which, when exceeded, sets the Travel Alert
Hi Hi alert.
D Hi Hi Deadband— the travel, in percent (%) of ranged travel, required to clear a Travel Hi Hi alert, once it has been
set.
Figure 3‐4. Travel Hi Alert Deadband
ALERT IS SET
TRAVEL ALERT HIGH POINT
28
TRAVEL ALERT DEADBAND
ALERT IS CLEARED
A6532
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