Flowserve Logix 3400MD User Instructions

USER INSTRUCTIONS

Installation

Operation

3400MD Digital Positioner

FCD LGENIM3404-00 – 6/09

Maintenance

Experience In Motion

Logix 3400MD Digital Positioner FCD LGENIM3404-00 – 9/09

2

Contents

Logix 3400MD Digital Positioner FCD LGENIM3404-00 – 9/09

1 Terms Concerning Safety 4
2 General Information 4
3 Unpacking and Storage 4

3.1 Unpacking 4

3.2 Storage 4

3.3 Pre-installation Inspection 5

4 Logix 3400MD Positioner Overview 5

4.1 Specifications 7

4.2 Positioner Operation 7

4.3 Detailed Sequence of Positioner Operations 8

5 Mounting and Installation 10

5.1 Mounting to Valtek Linear Mark One Valves 10

5.2 Mounting to Standard Valtek Rotary Valves (See Figure 4) 10

5.3 Optional Valtek Rotary Mounting Procedure (See Figure 5) 11

5.4 NAMUR Mounting Option 12

5.5 Tubing Positioner to Actuator 12

6 Wiring and Grounding Guidelines (See Figure 6) 12

6.1 FF Command Input Wiring 13

6.2 Grounding Screw 13

6.3 Segment Compliance Voltage (See Figure 7) 13

6.4 Cable Requirements 14

6.5 Intrinsically Safe Barriers 14

6.6 DD Support 14

7 Startup 14

7.1 Logix 3400MD Local Interface Operation 14

7.2 Initial DIP Switch Settings 14

7.3 Description of Configuration DIP Switch Settings 14

7.4 Description of Cal DIP Switch Settings 16

7.5 RE-CAL Operation 16

7.6 Manual Jog Calibration Operation 16

7.7 Local Control of Valve Position 17

7.8 Factory Reset 17

7.9 Logix 3400MD Status Condition 17

7.10 Version Number Checking 18

7.11 375 Handheld Communicator 18

7.12 Device Description (DD) Files 18

7.13 Calibration 18

7.13.1 CALIBRATE_FLAGS 18

7.13.2 Control and Tuning 19

7.14 Alerts 20

7.14.1 FINAL_VALUE_CUTOFF 20

7.14.2 Effects of FINAL_VALUE_CUTOFF on Operation 20

7.14.3 Soft Limits 20

7.14.4 Travel Accumulator 20

7.14.5 Cycle Counter 21

7.14.6 Position Deviation 21

7.14.7 Advanced Features 21

7.14.8 Standard vs. Advanced Diagnostics 21

7.14.9 Temperature and Pressure Units 21

7.14.10 Stroke Length 21

7.15 Characterization Retention 21

7.15.1 Initiating a Valve Signature 22

7.15.2 System Preparation 22

7.15.3 Signature Procedure 22

7.16 Step Signature 22

7.16.1 Collection of Stored Signature 22

7.17 Glossary 22

7.18 Transducer Block Parameters 24

8 Maintenance and Repair 35

8.1 Driver Module Assembly 35

8.2 Regulator 38

8.3 Checking or Setting Internal Regulator Pressure 38

8.4 Spool Valve 39

8.5 Spool Valve Cover 39

8.6 Stem Position Sensor 40

8.7 Main PCB Assembly 41

8.8 Pressure Sensor Board 41

8.9 User Interface Board 42
9 Optional Vented Design 43
10 Parts List 44
11 Logix 3400MD Spare Parts Kits 45
12 Logix 3400MD Mounting Kits 46

12.1 Valtek Mounting Kits 46

12.2 Logix O.E.M. Mounting Kits 47

12.3 NAMUR Accessory Mounting Kit Part Numbers 47
13 Frequently Asked Questions 48
14 How to Order 49
15 Troubleshooting 50

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Logix 3400MD Digital Positioner FCD LGENIM3404-00 – 9/09

1 Terms Concerning Safety

The safety terms DANGER, WARNING, CAUTION and NOTE are used
in these instructions to highlight particular dangers and/or to provide
additional information on aspects that may not be readily apparent.

DANGER: Indicates that death, severe personal injury and/or

!

substantial property damage will occur if proper precautions
are not taken.

WARNING: Indicates that death, severe personal injury and/or

0

substantial property damage can occur if proper precautions
are not taken.

CAUTION: Indicates that minor personal injury and/or property

1

damage can occur if proper precautions are not taken.

NOTE: indicates and provides additional technical information, which
may not be very obvious even to qualified personnel. Compliance
with other, not particularly emphasized notes, with regard to
transport, assembly, operation and maintenance and with regard to
technical documentation (e.g., in the operating instruction, product
documentation or on the product itself) is essential, in order to avoid
faults, which in themselves might directly or indirectly cause severe
personal injury or property damage.

and be hazardous to personnel and equipment, and may void existing
warranties.

WARNING: Standard industry safety practices must be

0

adhered to when working on this or any process control
product. Specifically, personal protective and lifting devices
must be used as warranted.

3 Unpacking and Storage

3.1 Unpacking

1. While unpacking the Logix 3400MD positioner, check the packing
list against the materials received. Lists describing the system and
accessories are included in each shipping container.

2. When lifting the system from the shipping container, position lifting
straps to avoid damage to mounted accessories. Systems with
valves up to six inches may be lifted by actuator lifting ring. On
larger systems, lift unit using lifting straps or hooks through the
yoke legs and outer end of body.

WARNING: When lifting a valve/actuator assembly with

0

lifting straps, be aware the center of gravity may be above
the lifting point. Therefore, support must be given to
prevent the valve/actuator from rotating. Failure to do so
can cause serious injury to personnel or damage to nearby
equipment.

2 General Information

The following instructions are designed to assist in unpacking, installing
and performing maintenance as required on Flowserve Valtek Logix
3400IQ digital positioners. Series 3000 is the term used for all the
positioners herein; however, specific numbers indicate features specific
to model (i.e., Logix 3400 indicates that the positioner has F
Fieldbus protocol). See Logix 3400MD Model Number table in this
manual for a breakdown of specific model numbers. Product users and
maintenance personnel should thoroughly review this bulletin prior to
installing, operating, or performing any maintenance on the valve.

Separate Valtek Flow Control Products Installation, Operation,
Maintenance instructions cover the valve (such as IOM 1 or IOM 27)
and actuator (such as IOM 2 or IOM 31) portions of the system and
other accessories. Refer to the appropriate instructions when this
information is needed.

To avoid possible injury to personnel or damage to valve parts,
WARNING and CAUTION notes must be strictly followed. Modifying
this product, substituting non-factory parts or using maintenance
procedures other than outlined could drastically affect performance

®

o u n d a t i o n

3. In the event of shipping damage, contact the shipper immediately.

4. Should any problems arise, contact a Flowserve Flow Control
representative.

3.2 Storage

Control valve packages (a control valve and its instrumentation) can
be safely stored in an enclosed building that affords environmental
protection; heating is not required. Control valve packages must be
stored on suitable skids, not directly on the floor. The storage location
must also be free from flooding, dust, dirt, etc.

Long Term Storage of Logix 3000 series Positioners in Humid
Locations

The Logix 3000 series positioners are designed to operate in humid
environments when connected to a proper instrument air supply. There
are some occasions when valves and positioners are stored at job
sites or installed and commissioned and then left without instrument
air for months. To make startup easier for units that are left without
instrument air and insure that the positioners will be ready to operate,
it is recommended that the vent assembly of the positioner be sealed
preferably with a desiccant pouch sealed with the vent assembly.

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Logix 3400MD Digital Positioner FCD LGENIM3404-00 – 9/09

The vent assembly is located in the upper left side of the positioner.
The gaps around the assembly as noted by the arrows should be sealed
for long term storage.

Joints to be sealed

Vent assembly

A small desiccant package as shown can be included under the sealing
tape to insure proper protection.

All of the edges around the vend assembly should be sealed similar to
the picture below.

Removeable
sealing tape

The sealing tape and desiccant should be removed when instrument air
is permanently applied to the positioner.

3.3 Pre-installation Inspection

Desiccant packet

If a valve control package has been stored for more than one
year, inspect one actuator by disassembling it per the appropriate
Installation, Operation, and Maintenance Instructions (IOM) prior to
valve installation. If O-rings are out-of-round, deteriorated, or both,
they must be replaced and the actuator rebuilt. All actuators must then
be disassembled and inspected. If the actuator O-rings are replaced,
complete the following steps:

1. Replace the pressure-balance plug O-rings.

2. Inspect the solenoid and positioner soft goods and replace as
necessary.

4 Logix 3400MD

Positioner Overview

The Logix 3400MD digital positioner is a two-wire Fo u n d a t i o n Fieldbus
compliant digital valve positioner. The positioner is configurable
through the local user interface. The Logix 3400MD utilizes the FF
protocol to allow two-way remote communications with the positioner.
The Logix 3400MD positioner can control both double- and single­acting actuators with linear or rotary mountings. The positioner is
completely powered by the FF signal. Start up voltage must be from a
FF power supply source.

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Logix 3400MD Digital Positioner FCD LGENIM3404-00 – 9/09

O O

Stem

Position

Sensor

Piezo Valve

Output 2

Output 1

Hall Effect
Sensor

Flame
Arrestor

Exhaust

Spool Valve

Flame
Arrestor

Pressure
Sensor Board

Air Supply

Main PCB

Regulator

Filter

Flame
Arrestor

Digital Position Algorithm

LED
Display

FF Input Signal

Sensor

-

+

+

+

+

Summer

Integration

I

Offset

Loop

Inner

+

-

Gmult

Pmin

Pmax

Deviation

F

OUNDATION

Fieldbus

Signal

Command In

(AO Block)

F

OUNDATION

Fieldbus

Transducer

Block

CONTROL

COMMAND

Output

D/A

Percentage

Algorithm

Control

Supply

Air

Control

Spool

Loop

Inner

ATO

Tubed

Sensor

Position

Stem

Voltage

Valve

Piezo

MPC

Soft Limits

Characterization

Linear Mode

Output

Inner-Loop

Figure 1: Logix 3400MD Digital Positioner Schematic (air-to-open configuration)

Figure 2: System Positioning Algorithm

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Logix 3400MD Digital Positioner FCD LGENIM3404-00 – 9/09

®

®

4.1 Specifications

Table I: Electrical Specifications

Power Supply

IS Fisco compliant

Communications FF Protocol ITK 5.1

Operating Current 23 mA

Maximum Voltage

Table II: Environmental Conditions

Operating Temperature Range Standard

Transport and Storage
Temperature Range

Operating Humidity 0 - 100% non-condensing

*Note: The Logix 3400MD is designed to operate with clean, dry, oil-free
instrument grade air per ISA 7.0.01-1996 or with dry nitrogen, sweet natural
gas.

Table III: Physical Specifications

Housing Material Cast, powder-painted aluminum, stainless steel

Soft Goods Buna-N / Florosilicone

Weight

Table IV: Positioner Specifications

Deadband <0.1% Full Span

Repeatability <0.05% Full Span

Linearity <0.5% (Rotary), <0.8%, (Linear Valve) Full Span

Air Consumption <0.3 SCFM (0.5 Nm

Air Supply 30-150 psig (ISA 7.0.0.1 compliant)

Table V: Air Supply Requrements

Dew Point

Particulate Matter Filtered to 5 microns

Oil Content Less than 1 ppm w/w

Contaminants Free of all corrosive contaminants

Two-wire, 9 to 32 V DC

FF compatible

36.0 V DC

9 t0 32 V DC for general use & flameproof applications

9 to 24 V DC for Intrinsically safe applications

9 to 17.5 V DC for Intrinsically safe applications per
FISCO requirements.

-40° to 176°F

(-40° to 80°C)

-40° to 176°F (-40° to 80°C)

8.3 pounds (3.9 kg) aluminum

20.5 pounds (9.3 kg) stainless steel

Per ISA 75.25.01-2000

3

/hr) @ 60 psi (4 bar)

0

At least 18

F (100 C) below minimum anticipated

ambient temperature

Table VII: Hazardous Area Certifications

Intrinsically Safe

Class I,II,III, Div 1, Grp A,B,C,D,E,F,G

Class I, Zone 0, AEx ia IIC T4

Entity Parameters:

Ui= 24V, Ii=250mA, Pi=1.2W,
Ci=3300pF,

Li=10uH

Fisco Parameters

Ui=17.5V, Ii=380mA, Pi=5.32W,

Ci=3300pF, Li=10uH

NEMA/Type 4X

Non Incendive: Class I, II, III, Div 1, Grp, A, B, C, D, F, G

0

C to +600 C

Ta=-20

II 1 G, Ex ia IIC T4 Tamb=-200 C to 600 C

Entity Parameters:

Ui=24V, Ii=250mA, Pi=1.2W, Ci=3300pF,

Li=10uH

Fisco Parameters:

Ui=17.5V, Ii=380mA, Pi=5.32W, Ci=3300pF,

Li=10uH

IP 65

IECEx

Ex ia IIC T4 Ga

Entitiy Parameters:

Ui=24V, Ii=250mA, Pi=1.2W, Ci=3300pF,

Li=10uH

Fisco Parameters:

Ui=17.5V, Ii=380mA, Pi=5.32W, Ci=3300pF,

Li=10uH

IP 65

Non Incendive

II 3 G, Ex nAnL IIC T6 Ta=-20

IP 65

CE Compliant

FISCO Compliant

Explosion Proof

Class I, Div. 1, Grp B, C, D

DIP Class II, III Div. 1 Grp E, F, G

NEMA/Type 4X

Class I, Div 1, Grp B, C, D

Class II, Grp E, F, G

Class III

Ex d IIB + H2

II 2 G, Ex d IIB+H2 T5
Ta=-400 C to 800 C IP65

II 2 D, Ex tD A21 T950 C IP65

Ta=-400 C to 550 C

NEMA/Type 4X

0

C to 600 C

Table VI: Function Blocks

AO One Analog Output

DI Two Discrete Inputs

DO One Discrete Output

PID One PID Control Function

OS One Output Splitter

IS One Input Selector

*NOTE: IP 66 INGRESS PROTECTION IS AVAILABLE. PLEASE
CONTACT FACTORY FOR DETAILS.

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Logix 3400MD Digital Positioner FCD LGENIM3404-00 – 9/09

Logix 3400MD

Positioner

Positioner
Bolts

Nut

Lock Washer

Nut

Follower Pin

Take-off Arm

Bolts

Stem Clamp

Bracket

Bolts

Bracket

Locknut
Washer

Follower
Arm

Nut

Metal Washers

4.2 Positioner Operation

The Logix 3400MD positioner is an electric feedback instrument.
Figure 1 shows a Logix 3400MD positioner installed on a double­acting linear actuator for air-to-open action.

The Logix 3400MD receives power from the two-wire, FF input signal.
This positioner utilizes FF communications for the command signal.
The command source can be accessed with the Rosemount 375
communicator or other host software.

0% is always defined as the valve closed position and 100% is always
defined as the valve open position. During stroke calibration, the
signals corresponding to 0% and 100% are defined.

The input signal in percent passes through a characterization/
limits modifier block. The positioner no longer uses CAMs or other
mechanical means to characterize the output of the positioner. This
function is done in software, which allows for in-the-field customer
adjustment. The positioner has four basic modes: Linear, Equal Percent
(=%), Quick Open (QO) and Custom characterization. In Linear mode,
the input signal is passed straight through to the control algorithm in a
1:1 transfer. In Equal Percent (=%) mode, the input signal is mapped to
a standard 30:1 rangeability =% curve. In Quick Open the input signal is
mapped to an industry standard quick-open curve. If Custom charac­terization is enabled, the input signal is mapped to either a default =%
output curve or a custom, user-defined 21-point output curve. The

custom user-defined 21-point output curve is defined using a handheld
or the Host configuration tool software. In addition, two user-defined
features, Soft Limits and Final Value Cutoff, may affect the final input
signal. The actual command being used to position the stem, after any
characterization or user limits have been evaluated, is called the Control
Command.

The Logix 3400MD uses a two-stage, stem-positioning algorithm. The
two stages consist of an inner-loop, spool control and an outer-loop,
stem position control. Referring again to Figure 1, a stem position
sensor provides a measurement of the stem movement. The Control
Command is compared against the Stem Position. If any deviation
exists, the control algorithm sends a signal to the inner-loop control to
move the spool up or down, depending upon the deviation. The inner­loop then quickly adjusts the spool position. The actuator pressures
change and the stem begins to move. The stem movement reduces the
deviation between Control Command and Stem Position. This process
continues until the deviation goes to zero.

The inner-loop controls the position of the spool valve by means
of a driver module. The driver module consists of a temperature­compensated hall effect sensor and a piezo valve pressure modulator.
The piezo valve pressure modulator controls the air pressure under a
diaphragm by means of a piezo beam bender. The piezo beam deflects
in response to an applied voltage from the inner-loop electronics. As
the voltage to the piezo valve increases, the piezo beam bends, closing

Figure 3: Linear Mark One Control Valve Mounting

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Logix 3400MD Digital Positioner FCD LGENIM3404-00 – 9/09

Positioner Bolts ¼-20 (4)*

* Located in appropriate

hole pattern as indicated on
bracket. (25, 50, 100/200)

Take-off Arm, Rotary
Lock Washer (2)
10-32 Bolt
10-32 Nut

Self-tapping Screws (2)

Spline Lever Adapter

10-32 Nut
Lock Washer

Follower Arm

Logix 3400MD

Digital Positioner

Bracket Bolts

-18 (2, not shown)

5

/

16

off against a nozzle causing the pressure under the diaphragm to
increase. As the pressure under the diaphragm increases or decreases,
the spool valve moves up or down respectively. The hall effect sensor
transmits the position of the spool back to the inner-loop electronics
for control purposes.

4.3 Detailed Sequence
of Positioner Operations

A more detailed example explains the control function. Assume the unit
is configured as follows:

• UnitisinOOS.

• Custom characterization is disabled (therefore characterization is

Linear).

• Nosoftlimitsenabled.NoFinalValueCutoffset.

• Valvehaszerodeviationwithapresentinputcommandof50.

Figure 4: Standard Rotary Mounting

• WritetoFinal_Valuetochangecommand.

• Actuatoristubedandpositionerisconguredair-to-open.

Given these conditions, 50 represents a Command source of 50
percent. Custom characterization is disabled so the Command source
is passed 1:1 to the Control Command. Since zero deviation exists,
the Stem Position is also at 50 percent. With the stem at the desired
position, the spool valve will be at a middle position that balances the
pressures above and below the piston in the actuator. This is commonly
called the null or balanced spool position.

Assume the input signal changes from 50 to 75. The positioner sees
this as a Command source of 75 percent. With Linear characterization,
the Control Command becomes 75 percent. Deviation is the difference
between Control Command and Stem Position : Deviation = 75% - 50%
= +25%, where 50 percent is the present stem position. With this
positive deviation, the control algorithm sends a signal to move the
spool up from its present position. As the spool moves up, the supply
air is applied to the bottom of the actuator and air is exhausted from

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Logix 3400MD Digital Positioner FCD LGENIM3404-00 – 9/09

the top of the actuator. This new pressure differential causes the stem
to start moving towards the desired position of 75 percent. As the stem
moves, the Deviation begins to decrease. The control algorithm begins
to reduce the spool opening. This process continues until the Deviation
goes to zero. At this point, the spool will be back in its null or balanced
position. Stem movement will stop and the desired stem position is
now achieved.

One important parameter has not been discussed to this point: Inner
loop offset. Referring to Figure 2, a number called Inner loop offset
is added to the output of the control algorithm. In order for the spool
to remain in its null or balanced position, the control algorithm must
output a non-zero spool command. This is the purpose of the Inner
loop offset. The value of this number is equivalent to the signal that
must be sent to the spool position control to bring it to a null position
with zero deviation. This parameter is important for proper control and
is optimized and set automatically during stroke calibration.

5 Mounting and Installation

5.1 Mounting to Valtek Linear
Mark One Valves

To mount a Logix 3400MD positioner to a Valtek linear Mark One valve,
refer to Figure 3 and proceed as outlined below. The following tools are
required:

9

•

⁄16" open-end wrench (or ½" for spud sizes 2.88 and smaller)

7

•

⁄16" box wrench

3

•

⁄8" open-end wrench

1. Remove washer and nut from follower pin assembly. Insert pin into

the appropriate hole in follower arm, based on stroke length. The
stroke lengths are stamped next to their corresponding holes in the
follower arms. Make sure the unthreaded end of the pin is on the
stamped side of the arm. Reinstall lock washer and tighten nut to
complete follower arm assembly.

2. Slide the double-D slot in the follower arm assembly over the flats

on the position feedback shaft in the back of the positioner. Make
sure the arm is pointing toward the customer interface side of the
positioner. Slide lock washer over the threads on the shaft and
tighten down the nut.

3. Align the bracket with the three outer mounting holes on the

positioner. Fasten with ¼" bolts.

4. Screw one mounting bolt into the hole on the yoke mounting pad

nearest the cylinder. Stop when the bolt is approximately
being flush with mounting pad.

3

⁄16" from

5. Slip the large end of the teardrop shaped mounting hole in the back
of the positioner/bracket assembly over the mounting bolt. Slide
the small end of the teardrop under the mounting bolt and align the
lower mounting hole.

6. Insert the lower mounting bolt and tighten the bolting.

7. Position the take-off arm mounting slot against the stem clamp
mounting pad. Apply Loctite 222 to the take-off arm bolting and
insert through washers into stem clamp. Leave bolts loose.

8. Slide the appropriate pin slot of the take-off arm, based on stroke
length, over the follower arm pin. The appropriate stroke lengths
are stamped by each pin slot.

9. Center the take-off arm on the rolling sleeve of the follower pin.

10. Align the take-off arm with the top plane of the stem clamp and
tighten bolting. Torque to 120 in-lb.

NOTE: If mounted properly, the follower arm should be horizontal
when the valve is at 50% stroke and should move approximately
±30° from horizontal over the full stroke of the valve. If mounted
incorrectly, a stroke calibration error will occur and the indicator
lights will blink a YRYR or YRRY code indicating the position
sensor has gone out of range on one end of travel. Reposition the
feedback linkage or rotate the position sensor to correct the error.

5.2 Mounting to Standard Valtek

Rotary Valves (See Figure 4)

The standard rotary mounting applies to Valtek valve/actuator assem­blies that do not have mounted volume tanks or handwheels. The
standard mounting uses a linkage directly coupled to the valve shaft.
This linkage has been designed to allow for minimal misalignment
between the positioner and the actuator. The tools required for the
following procedure are:

5

•

⁄32" Allen wrench

• "open-endwrench

7

•

⁄16" open-end wrench

3

•

⁄8" socket with extension

3

•

⁄16" nutdriver

1. Fasten the spline lever adapter to the splined lever using two 6 x ½"
self-tapping screws.

2. Slide the take-off arm assembly onto the spline lever adapter shaft.
Insert the screw with star washer through the take-off arm and
add the second star washer and nut. Tighten nut with socket so
arm is lightly snug on the shaft but still able to rotate. This will be
tightened after linkage is correctly oriented.

10

Figure 5: Optional Rotary Mounting

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7BMUFL

Logix 3400MD Digital Positioner FCD LGENIM3404-00 – 9/09

3. Attach follower arm to positioner feedback shaft using the star
washer and 10-32 nut.

NOTE: The arm will point up when feedback shaft is in the free
position.

4. Using four ¼-20 x ½" bolts, fasten positioner to universal bracket
using appropriate hole pattern (stamped on bracket).

5. Using a ½" end wrench and two

5

⁄16-18 x ½" bolts, attach bracket
to actuator transfer case pad. Leave these bolts slightly loose until
final adjustments are made.

6. Rotate take-off arm so the follower pin will slide into the slot on
the take-off arm. Adjust the bracket position as needed noting
the engagement of the follower pin and the take-off arm slot. The
pin should extend approximately
properly adjusted, securely tighten the bracketing bolts.

1

⁄16" past the take-off arm. When

Orienting the Take-off Arm for Final Lock Down

1. Tube the Logix 3400MD positioner to the actuator according to the
instructions given in Section 5.5, “Tubing Positioner to Actuator.”

2. With supply pressure off, rotate the follower arm in the same
direction the shaft would rotate upon a loss of supply pressure.
When the mechanical stop of the follower arm (positioner) is
reached, rotate back approximately 15 degrees.

3. Hold the take-off arm in place; tighten the screw of the take-off arm.

NOTE: The take-off arm should be snug enough to hold the follower
arm in place but allow movement when pushed.

4. Connect regulated air supply to appropriate port in manifold.

5. Remove main cover and locate DIP switches and RE-CAL
button.

6. Refer to sticker on main board cover and set DIP switches
accordingly. (A more detailed explanation of the DIP switch
settings is given in Section 7, “Startup.”)

7. Press the RE-CAL button for three to four seconds or until the
positioner begins to move. The positioner will now perform a
stroke calibration.

8. If the calibration was successful the green LED will blink GGGG or
GGGY and the valve will be in control mode. Continue with step 9.
If calibration failed, as indicated by a YRYR or YRRY blink code, the
A/D feedback values were exceeded and the arm must be adjusted
away from the positioners limits. Return to step 2 and rotate the
arm back approximately 10 degrees.

NOTE: Remember to remove the air supply before re-adjusting
take-off arm.

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Logix 3400MD Digital Positioner FCD LGENIM3404-00 – 9/09

9. Tighten the nut on the take-off arm. The socket head screw of the
take-off arm must be tight, about 40 in-lb.

NOTE: If the take-off arm slips, the positioner must be recalibrated.

WARNING: Failure to follow this procedure will result in

0

positioner and/or linkage damage. Check air-action and
stroke carefully before lockdown of take-off arm to spline
lever adapter.

5.3 Optional Valtek Rotary

Mounting Procedure (See Figure 5)

The optional rotary mounting applies to Valtek valve/actuator assem­blies that are equipped with mounted volume tanks or handwheels. The
optional mounting uses a four-bar linkage coupled to the valve shaft.
The following tools are required:

3

•

⁄8" open-end wrench

7

•

⁄16" open-end wrench

• "open-endwrench

1. Using a ½" open-end wrench and two
bracket to actuator transfer case pads. Leave bracket loose to allow
for adjustment.

2. Using four ¼-20 x ½" bolts and a
positioner to universal bracket, using the four-hole pattern that
locates the positioner the farthest from the valve. Rotate positioner
90 degrees from normal so gauges are facing upward.

3. Attach follower arm to positioner feedback shaft, using the star
washer and 10-32 nut.

5

⁄16-18 x ½" bolts, attach

7

⁄16" open-end wrench, fasten

5.4 NAMUR Mounting Option

Logix 3200MD is available with a NAMUR output shaft and mounts on
an actuator using the ISO F05 holes. Proper alignment of the positioner
shaft to the actuator shaft is very important since improper alignment
can cause excess wear and friction to the positioner.

5.5 Tubing Positioner to Actuator

The Logix 3400MD digital positioner is insensitive to supply pressure
changes and can handle supply pressures from 30 to 150 psig. A
supply regulator is recommended if the customer will be using the
diagnostic features of the Logix 3400MD but is not required. In applica­tions where the supply pressure is higher than the maximum actuator
pressure rating a supply regulator is required to lower the pressure
to the actuator’s maximum rating (not to be confused with operating
range). An air filter is highly recommended for all applications where
dirty air is a possibility.

NOTE: The air supply must conform to ISA Standard ISA 7.0.01 (a dew
point at least 18°F below ambient temperature, particle size below five
microns—one micron recommended—and oil content not to exceed
one part per million).

Air-to-open and air-to-close are determined by the actuator tubing, not
the software. When air action selection is made during configuration,
that selection tells the control which way the actuator has been tubed.
The top output port is called Output 1. It should be tubed to the side
of the actuator that must receive air to begin the correct action on
increasing signal. Verify that tubing is correct prior to a stroke calibra­tion. Proper tubing orientation is critical for the positioner to function
correctly and have the proper failure mode. Refer to Figure 1 and follow
the instructions below:

4. Attach tripper and tripper clamp to valve shaft using two ¼-20
bolts and two ¼-20 locknuts. Leave tripper loose on shaft until final
adjustment.

5. Thread ball joint linkage end to tripper and tighten (thread locking
compound such as Loctite is recommended to prevent back
threading). Adjust the length of tie rod so follower arm and tripper
rotate parallel to each other (the rod must be cut to the desired
length). Connect the other ball joint end to follower arm using a star
washer and a 10-32 nut.

6. Tighten bracket and tripper bolting.

7. Check for proper operation, note direction of rotation.

WARNING: If rotating in wrong direction, serious damage

0

will occur to the positioner and/or linkage. Check air action
and stroke direction carefully before initiating operation.

12

Linear Double-acting Actuators

For a linear air-to-open actuator, the Output 1 port of the positioner
manifold is tubed to the bottom side of the actuator. The Output
2 port of the positioner manifold is tubed to the top side of the
actuator. For a linear air-to-close actuator the above configuration is
reversed.

Rotary Double-acting Actuators

For a rotary actuator, the Output 1 port of the positioner manifold
is tubed to the bottom side of the actuator. The Output 2 port of
the positioner manifold is tubed to the top side of the actuator. This
tubing convention is followed regardless of air action. On rotary
actuators, the transfer case orientation determines the air action.

Single-acting Actuators

For single-acting actuators, the Output 1 port is always tubed to the
pneumatic side of the actuator regardless of air action. The Output 2
port must be plugged.

Logix 3400MD Digital Positioner FCD LGENIM3404-00 – 9/09

Shielded Cable

FF Signal

Connect Shield at Source

Housing EARTH
Terminal

External
Bonding
Location

FF Field
Terminators

Environmental
Seal

+

-

R

barrier

(if present) R

wire

FF

Signal

Source

Compliance

Voltage

Logix

3400MD

Current

23 mA

9 VDC min

6 Wiring and Grounding

Guidelines

WARNING: This product has electrical conduit connections

0

in either thread sizes ½" NPT or M20 which appear identical
but are not interchangeable. Housings with M20 threads are
stamped with the letters M20 above the conduit opening.
Forcing dissimilar threads together will damage equipment,
cause personal injury and void hazardous location certifica­tions. Conduit fittings must match equipment housing threads
before installation. If threads do not match, obtain suitable
adapters or contact a Flowserve representative.

(See Figure 6)

Figure 6: Field Termination

Figure 7: Compliance Voltage

6.1 FF Command Input Wiring

The Logix 3400MD is non-polarity sensitive. Wire FF source to the input
terminals (see Figure 6). Minimum operating voltage is 9 VDC.

The FF signal to the Logix 3400MD digital positioner should be in
shielded cable. Shields must be tied to a ground at only one end of
the cable to provide a place for environmental electrical noise to be
removed from the cable. In general, shield wire should be connected at
the source. Refer to guidelines in FF AG-181 for proper wiring methods.

flowserve.com

13

Logix 3400MD Digital Positioner FCD LGENIM3404-00 – 9/09

LEDs

DIP Switch Block

Jog Buttons

Rotary
Selector
Switch

RE-CAL Button

NOTE: The Logix 3400MD positioner carries an intrinsically safe barrier
rating of 250 mA. Input currents should not exceed 250 mA, 5 watts.

6.2 Grounding Screw

The green grounding screw, located inside the termination cap, should
be used to provide the unit with an adequate and reliable earth ground
reference. This ground should be tied to the same ground as the
electrical conduit. Additionally, the electrical conduit should be earth
grounded at both ends of its run.

WARNING: The green grounding screw must not be used to

0

terminate signal shield wires.

6.3 Segment Compliance Voltage (See Figure 7)

Output compliance voltage refers to the voltage limit that can be
provided by the FF source. A FF system consists of the FF source,
wiring resistance, barrier resistance (if present), and the Logix 3400MD
positioner voltage. The Logix 3400MD digital positioner requires that
the system allows for a 9.0 VDC drop across the positioner at minimum
segment voltage. The actual voltage at the terminals varies from 9.0 to

32.0 VDC depending on the FF signal and ambient temperature.

Determine if the segment will support the Logix 3400MD digital
positioner by performing the following calculation.

Example:

DCS Compliance Voltage = 19 VDC

R

= 300 Ω

barrier

R

= 25 Ω

wire

Current

Voltage=19VDC–0.023A•(300Ω+25Ω)=11.5VDC

The voltage 11.5 VDC is greater than the required 9.0 VDC; therefore,
this system will support the Logix 3400IQ digital positioner.

= 23 mA

max

6.4 Cable Requirements

The Logix 3400MD digital positioner utilizes the FF protocol. This
communication signal is superimposed on the supply voltage.

FF rated cable should be used. Refer to H1 wiring specification.

6.5 Intrinsically Safe Barriers

When selecting an intrinsically safe barrier, make sure the barrier is
FF compatible. Although the barrier will pass the segment voltage and
allow normal positioner operation, if not compatible, it may prevent FF
communication.

Voltage = Compliance Voltage (@ 23 mA) –

23mA•(R

The calculated voltage must be greater than 9 VDC in order to safely
support the Logix 3400MD digital positioner.

barrier

+ R

)

wire

Equation 1

6.6 DD Support

The DD for the Logix 3400MD can be downloaded from either the
flowserve website: www.valvesight.com or the F
website: www.Fieldbus.org.

o u n d a t i o n Fi e l d b u s

7 Startup

Figure 8: Local User Interface

14

Logix 3400MD Digital Positioner FCD LGENIM3404-00 – 9/09

% Command

% Control Command

0 10 20 30 40 50 60 70 80 90 100

0

10

20

30

40

50

60

70

80

90

100

=%

Linear

Custom

Quick Open

7.1 Logix 3400MD Local Interface
Operation

The Logix 3400MD local user interface (Figure 8) allows the user to
configure the basic operation of the positioner, tune the response, and
calibrate the positioner without additional tools or configurators. The
local interface consists of a RE-CAL button for automatic zero and span
setting, along with two jog buttons (

and ) for spanning valve/actua­tors with no fixed internal stop in the open position. There is also a DIP
switch block containing eight switches. Six of the switches are for basic
configuration settings and two are for FF options. There is also a rotary
selector switch for adjusting the positioner gain settings. For indication
of the operational status or alarm conditions there are three LEDs on
the local user interface.

7.2 Initial DIP Switch Settings

Before placing the unit in service, set the DIP switches in the
Configuration boxes to the desired control options. A detailed descrip­tion of each DIP switch setting follows.

NOTE: The Logix 3400MD positioner reads the DIP switch settings each
time the RE-CAL button is pressed. If a FF handheld or Host software is
used to configure and then calibrate the positioner, the DIP switches are
not read. The auto-tune adjustment switch labeled “GAIN” is always live
and can be adjusted at any time.

Other Select Other if another characteristic is desired, which is set in
conjunction with the Control_Flags parameter in the transducer block.

Optional Pos. Characterization

If the Pos. Characterization switch is set to Other then the CURVE_
SELECT parameter is active with the following options:

=% The =% option will characterize the actuator response to the input
signal based on a standard 30:1 equal percent rangeability curve.

QO Quick open is based on a standard industry quick-open curve.

Custom If Custom is selected, the positioner will be characterized

to a custom table that must be set-up using a properly configured
375 handheld or other host software. Custom characterization can be
thought of as a “soft CAM.” The user can define a characterization curve
using 21 points. The control will linearly interpolate between points.
Points do not have to be equally spaced in order to allow more defini­tion at critical curve areas. The default values will linearize the output of
a valve with an inherent =% characteristic (e.g. ball valves.)

Figure 9: Default Custom Characterization

Transducer block settings will always override the DIP switch settings
until the RE-CAL button is pressed.

7.3 Description of Configuration

DIP Switch Settings

The first six DIP switches are for basic configuration. The function of
each switch is described below.

Air Action

This must be set to match the configuration of the valve/actuator
mechanical tubing connection and spring location since these deter­mine the air action of the system.

ATO (air-to-open)

Selecting ATO if increasing output pressure from the positioner is tubed
so it will cause the valve to open.

ATC (air-to-close)

Selecting ATC if increasing output pressure from the positioner is tubed
so it will cause the valve to close.

Pos. Characterization
Linear Select Linear if the actuator position should be directly

proportional to the input signal.

15

flowserve.com

Logix 3400MD Digital Positioner FCD LGENIM3404-00 – 9/09

A

GAIN

B

C

D

E

F

G

H

Table VI : Characteristic Curve Data

% Command

0 0 0 0 0

5 0.62 5 8.66 18.8

10 1.35 10 16.24 37.6

15 2.22 15 23.17 56.4

20 3.25 20 30.11 74.0

25 4.47 25 35.31 84.3

30 5.91 30 40.51 90.0

35 7.63 35 45.42 92.0

40 9.66 40 50.34 93.4

45 12.07 45 54.40 94.2

50 14.92 50 58.47 94.8

55 18.31 55 62.39 95.5

60 22.32 60 66.31 96.0

65 27.08 65 70.27 96.5

70 32.71 70 74.23 97.0

75 39.40 75 78.17 97.5

80 47.32 80 82.11 98.0

85 56.71 85 85.50 98.5

90 67.84 90 88.89 99.0

95 81.03 95 94.45 99.5

100 100.00 100 100.00 100.0

=% Linear Custom QO

% Control Command

If the adjustable GAIN selector switch is set to “D”, “C”, “B”, or “A” with
the auto tune switch on, progressively lower gain settings will be used
based on response parameters measured during the last RE-CAL.

If the adjustable GAIN selector switch is set to “F”, “G”, or “H” with
the auto tune switch on, progressively higher gain settings will be
calculated and used based on response parameters measured during
the last RE-CAL.

Off Off forces the positioner to use one of the factory preset
tuning sets determined by the adjustable GAIN selector switch.
Settings “A” through “H” are progressively higher gain predefined
tuning sets. The GAIN selector switch is live and can be adjusted at
any time to modify the tuning parameters.

NOTE: “E” is the default adjustable GAIN selector switch setting for
all actuator sizes. Raising or lowering the gain setting is a function
of the positioner/valve response to the control signal, and is not
actuator size dependent.

Stability Switch

This switch adjusts the position control algorithm of the positioner for
use with low-friction control valves or high-friction automated valves.

Low-Friction Valves Placing the switch to the left optimizes the
response for low-friction, high-performance control valves. This setting
provides for optimum response times when used with most low-friction
control valves.

Auto Tune

This switch controls whether the positioner will auto tune itself every
time the RE-CAL button is pressed or use preset tuning parameters.

On On enables an auto tune feature that will automatically determine
the positioner gain settings based on the current position of the adjust­able GAIN switch setting and response parameters measured during
the last RE-CAL. The GAIN switch is live, meaning the settings can be
adjusted at any time by changing the rotary switch position. (Note that
there is a small black arrow indicating the selection. The slot in the
switch is NOT the indicator.)

Figure 10: Adjustable GAIN Switch

If the adjustable GAIN selector switch is set to “E” with the auto tune
switch on, a Flowserve standard response tuning set will be calculated
and used based on response parameters measured during the last
RE-CAL.

High-Friction Valves Placing the switch to the right optimizes
the response for valves and actuators with high friction levels. This
setting slightly slows the response and will normally stop limit
cycling that can occur on high-friction valves.

7.4 Description of Cal DIP Switch Settings

The sixth DIP switch selects between two calibration options. The
function of the Cal DIP switch is described below.

NOTE: The unit must be in OOS mode before a calibration sequence can
begin.

Auto Select Auto if the valve/actuator assembly has an internal stop
in the open position. In Auto mode the positioner will fully close the
valve and register the 0% position and then open the valve to the stop
to register the 100% position when performing a self-calibration. See
detailed instructions in the next section on how to perform an auto
positioner calibration.

Jog Select Jog if the valve/actuator assembly has no physical
calibration stop in the open position. In the Jog mode the positioner will
fully close the valve for the 0% position and then wait for the user to set
the open position using the Jog buttons labeled with the up and down

16

Logix 3400MD Digital Positioner FCD LGENIM3404-00 – 9/09

arrows. See the detailed instructions in Section 7.6 on how to perform a
manual calibration using the Jog buttons.

WARNING: During the RE-CAL operation the valve may stroke

0

unexpectedly. Notify proper personnel that the valve will stroke,
and make sure the valve is properly isolated.

7.5 RE-CAL Operation

NOTE: The unit must be in OOS mode before a calibration sequence can
begin.

The RE-CAL button is used to locally initiate a calibration of the positioner.
Pressing and holding the RE-CAL button for approximately three seconds will
initiate the calibration. If the Config-Switches option is enabled, the settings
of all the configuration switches are read and the operation of the positioner
adjusted accordingly. A RE-CAL can be aborted at any time by briefly
pressing the RE-CAL button and the previous settings will be retained.

If the Quick Calibration switch (be careful not to confuse this with the
RE-CAL button) is set to Auto and the valve/actuator assembly has the
necessary internal stops the calibration will complete automatically. While the
calibration is in progress you will notice a series of different lights flashing
indicating the calibration progress. When the lights return to a sequence
that starts with a green light the calibration is complete. An explanation of
the various light sequences follows. The initial calibration of extremely large
or small actuators may require several calibration attempts. The positioner
adapts to the actuator performance and begins each calibration where the
last attempt ended. On an initial installation it is recommended that after
the first successful calibration that one more calibration be completed for
optimum performance.

WARNING: When operating using RE-CAL or local control, the valve

0

will not respond to external commands. Notify proper personnel that
the valve will not respond to remote command changes, and make
sure the valve is properly isolated.

with a green light the calibration is complete. An explanation of the
various light sequences follows.

7.7 Local Control of Valve Position

Local control of valve position can be achieved from the user interface by
holding down both Jog buttons and the RE-CAL button simultaneously for
three seconds. While in this mode the LEDs will flash a Y-G-Y-Y (yellow­green-yellow-yellow) sequence. Use the two Jog buttons (
manually control the position of the valve. To exit the local control mode and
return to normal operation, briefly press the RE-CAL button.

and ) to

7.8 Factory Reset

To perform a factory reset, disconnect power, hold the RE-CAL button down,
and reconnect power. Performing a factory reset will cause all of the internal
variables, including calibration, to be reset to factory defaults. The positioner
must be recalibrated after a factory reset. User configured limits, alarm
settings, and valve information will also need to be restored.

WARNING: Performing a factory reset may result in the inability to

0

operate the valve until reconfigured properly. Notify proper personnel
that the valve may stroke, and make sure the valve is properly
isolated.

7.9 Logix 3400MD Status Condition

The blink codes used to convey the status of the Logix 3400MD digital posi­tioner are described in the table below. In general, any sequence starting with
a green light flashing first is a normal operating mode and indicates that there
are no internal problems. Any sequence starting with a yellow light flashing
indicates that the unit is in a special calibration or test mode, or that there
was a calibration problem. Any sequence starting with a red light flashing
indicates that there is an operational problem with the unit.

7.6 Manual Jog Calibration Operation

If the Quick Calibration switch is set to Jog, the calibration will initially
close the valve then cause a small jump in the valve position. The jog
calibration process will only allow the user to manually set the span;
zero position is automatically always set at the seat. If an elevated zero is
needed a handheld or other PC-based configuration software is required.
When performing a jog calibration, the LEDs will flash in a sequence
of Y-G-Y-Y (yellow-green-yellow-yellow) which indicates that the user
must use the Jog buttons
100% position. When the stem is properly positioned press both the Jog
buttons
and proceed. No more user actions are required while the calibration
process is completed. When the lights return to a sequence that starts

( and ) simultaneously again to register the 100% position

( and ) to manually position the valve to the

17

flowserve.com

Logix 3400MD Digital Positioner FCD LGENIM3404-00 – 9/09

Code

YRRY

YRRR

YRGY Friction Low Warning 19 20 Friction low warning*

YRGR Pneumatic Leak Warning 47 21

YRYG Friction High Warning 18 22 Friction high warning*

RGGY Feedback Range Too Small 56

RGGY Position Out of Range 0 57

RGGY Position Out of Range 100 58

RGGR Inner Loop Offset Time Out 61 26

RGYG Non Settle Time Out 60 27

RGYY No Motion Time Out 59 28

RGRR Factory Reset State 1 29

RYYG

RRGG Spool Sticking Alarm 49 31

RRGY Friction Low Alarm 21 32 Friction low alarm*

RRGR Friction High Alarm 20 33 Friction high alarm*

RRYG Piezo Voltage Error 35 34 Piezo voltage alarm***

RRYR Hall Sensor Upper Position 52

RRYR Hall Sensor Lower Position 53

RRRY

RRRY NV RAM Checksum Error 37

RRRG Loss of Inter PCB Comm 38 27

RRRR Position Deviation Alarm 8 38 Position deviation alarm*

Meaning

Electronic Inability to Fail

Safe

Pneumatic Inability to Fail

Safe

Supply Pressure Low

Alarm

Shunt Voltage Reference

Error

Error

39 23

17 24

40 30

34

Code

Sticker

25

35

36

Line

Sticker Text

Electronic fail safe

warning

Pneumatic fail safe

warning

Pneumatic leak warning*

**

Feedback calibration

range alarm

Inner loop offset time out

alarm

Feedback non-settle time

out alarm

Feeback no motion time

out alarm**

Factory reset state.

Recalibrate

Supply pressure low

alarm* **

Pilot relay response

alarm*

Pilot relay position limit

alarm**

Electronics Error

alarm***RRRY Watch Dog Time Out 36

Loss of Board

Communication***

*User Set
**Check Supply Pressure

***Circuit board problem. See IOM.

7.10 Version Number Checking

The version number of the embedded code may be checked at any time
except during a calibration by holding down the up arrow Jog button
(

). This will not alter the operation of the unit other than to change

the blink sequence to three blinks indicating the major version number.

7.11 375 Handheld Communicator

The Logix 3400MD Quick Start Guide is available from a Flowserve
representative.

The Logix 3400MD digital positioner supports and is supported by the
375 Handheld Communicator. The Device Description (DD) files and the
manuals listed below can be obtained from the FF Foundation or from
your Flowserve representative. For more information please see the
following guides:

• ProductManualforthe375Communicator.

• Logix3400MD Digital Positioner Reference Manual.

Diagnostic features such as the signature tests and ramp tests are
performed internally. Certain calibration features such as actuator
pressure sensor calibrations are performed using the 375 Handheld
Communicator or using the Host software.

7.12 Device Description (DD) Files

The DD files for the Logix 3400 can be downloaded from the Flowserve
website, http://www.valvesight.com, or the Foundation Fieldbus
website, www.fieldbus.org.

7.13 Calibration

7.13.1 CALIBRATE_FLAGS

Position 0% Calibration Flag in CALIBRATE_FLAGS

During stroke calibration, the Logix 3400 digital positioner checks to
see if the linkage is placing the stem position sensor in range. If the
valve stroke causes stem position measurement to go out of range in
the closed position, a Position 0% Flag will be generated. The valve
stem will stop in the closed position and the red LED will blink. Linkage
must be adjusted to bring the sensor in range. Special LED indication:
If the linkage is out of range, the LEDs can be used as an adjustment
guide. The LED will change from a red to yellow when the linkage is
brought into range.

Position 100% Calibration Flag in CALIBRATE_FLAGS

During stroke calibration, the Logix 3400MD digital positioner checks
to see if the linkage is placing the stem position sensor in range. If the
valve stroke causes stem position measurement to go out of range in
the open position, a Position 100% Flag will be generated. The valve
stem will stop in the open position and the red LED will blink. Linkage
must be adjusted to bring the sensor in range. Special LED indication:
If the linkage is out of range, the LEDs can be used as an adjustment
guide. The LED will change from a red to yellow when the linkage is
brought into range.

18

Table VII: Status and Conditions

Logix 3400MD Digital Positioner FCD LGENIM3404-00 – 9/09

Code

GGGG Normal Operation 255 1 Normal Operation

GGGY MPC Active 13 2

GGYG Local Interface Disabled 14 3

GGYY Digital Command Mode 2 4

GGRR Squwak Mode 3 5 Squawk mode*

GYGG Position Upper Limit 11

GYGG Position Lower Limit 12

GYGY Soft Stop Upper Limit 9

GYGY Soft Stop Lower Limit 10

GRGG Valve Cycles Warning 22

GRGG Valve Travel Warning 23

GRGG Spool Cycles Warning 50

GRGG Spol Travel Warning 51

YGGY Signature in Progress 5 9

YGGR Initializing 0 10

YGYG Stroke Cal in Progress 24

YGYG

YGYG Pressure Cal in Progress 26

YGYG

YGYG Setting Inner Loop Offset 28

YGYY Joc Command Mode 4 12

YGYR

YYGG Temp. High Warning 32

YYGG Temp. Low Warning 33

YYGY Port 1 Value Out of Range 43

YYGY Port 2 Value Out of Range 44

YYGY Port 1 Range Too Small 45

YYGY Port 2 Range Too Small 46

YYGR

YYYG

YYYY Actuation Ratio Warning 16 18

YRGG Spool Sticking Warning 48 19

Meaning

Command Loop Cal in

Progress

Analog Output Cal in

Progress

Jog Calibration Set 100

Position

Supply Pressure High

Warning

Supply Pressure Low

Warning

Error

Code

25

27

62 13

41 16

42 17

Sticker Text

Line

Sticker

Tight shutoff (MPC)

active*

Local Interface

Disabled*

Digital Command

mode*

Upper or lower

6

position alert*

Soft stop position

7

reached*

Travel or cycle limit

8

reached*

Signature in

progress

Initialization in

progress

Calibration in

11

progress

Local jog command

mode

Jog cal waiting ->

Set 100% pos.

Positioner tempera-

14

ture warning

Pressure out of

15

range warning

Supply pressure

high warning* **

Supply pressure low

warning* **

Actuation ratio

warning* **

Pilot relay response

warning*

19

flowserve.com

Figure 11: Logix 3400 Block Diagram

Sensor

-

+

+

+

+

Summer

Integration

I

Offset

Loop

Inner

+

-

Gmult

Pmin

Pmax

Deviation

F

OUNDATION

Fieldbus

Signal

Command In

(AO Block)

F

OUNDATION

Fieldbus

Transducer

Block

CONTROL

COMMAND

Output

D/A

Percentage

Algorithm

Control

Supply

Air

Control

Spool

Loop

Inner

ATO

Tubed

Sensor

Position

Stem

Voltage

Valve

Piezo

MPC

Soft Limits

Characterization

Linear Mode

Output

Inner-Loop

Logix 3400MD Digital Positioner FCD LGENIM3404-00 – 9/09

Position Span Flag in CALIBRATE_FLAGS

Position span is a check during stroke calibration to verify that the valve
stem moved. The algorithm waits to see if no movement is detected
when the valve is automatically stroked open. Anything that could
prevent the valve from stroking will generate a Position Span error (no
supply pressure, malfunctioning spool valve).

7.13.2 Control and Tuning

Setting P + I Parameters

Using the Host configurator, you can set individual tuning parameters. A
few key points are mentioned below. (See Figure 11.)

GAIN_UPPER, GAIN_LOWER, and GAIN_MULT: These three param­eters are related by the following formula.

Proportional Gain =

Maximum Gain - | deviation | x Gain Multiplier

If Proportional Gain < Minimum Gain, then Proportional Gain =
Minimum Gain

This algorithm allows for quicker response to smaller steps yet stable
control for large steps. Setting the gain multiplier to zero and max gain
= min gain results in a typical fixed proportional gain.

recommended that maximum and minimum gains be adjusted while
leaving integral gain fixed at 10. Integration is disabled below a stem
position of 3 percent and above a stem position of 97 percent. This is to
prevent integration windup from calibration shifts due to lower pressure
or a damaged seat that may prevent fully closing the valve.

Integration Summer: The integral summer within the Logix 3400MD
digital positioner is clamped at +20 percent and -20 percent. If the
integration summer is fixed at +20 percent or -20 percent, it usually
indicates a control problem. Some reasons for a clamped integration
summer are listed below:

• Strokecalibrationincorrect.

• Anyfailurewhichpreventsstempositionmovement:stuckspool,

handwheel override, low pressure.

• Incorrectinnerloopoffset.

• Lossofairsupplyonafailinplaceactuator.

Writing a zero to integral gain (IGAIN) will clear the integral summer.
The integral gain can then be returned to its original value.

Inner loop offset (IL_OFFSET): Three control numbers are summed to
drive the inner loop spool position control: proportional gain, integral
summer, and inner-loop offset.

The higher the gain multiplier, the larger the required deviation before
the gain increases. Default values upon initiating a RESET to factory
defaults (under LOAD_EE_DEFAULTS) are maximum gain = 2.0,
minimum gain= 1.0, and gain multiplier= 0.05. These values will allow
stable control on all Valtek control product actuator sizes.

Integral Gain (IGAIN): The integral gain is primarily for deviations due
to temperature drift within the inner loop spool control. The factory
default value is 10. Although higher numbers can speed the time it
takes to reach zero deviation, it can add overshoot if too large. It is

20

Inner-loop offset is the parameter that holds the spool in the ‘null’
or ‘balance’ position with a control deviation of zero. This value is
written by the positioner during stroke calibration and is a function
of the mechanical and electrical spool sensing tolerances. However,
if it becomes necessary to replace the driver module assembly or the
software RESET calibration constants has been performed, it may be
necessary to adjust this value. The method below should be used to
adjust inner-loop offset.

Or simply perform a new stroke calibration.

Logix 3400MD Digital Positioner FCD LGENIM3404-00 – 9/09

From the fieldbus configurator:

• SettransducerblocktoOOS

• EnableDiagnosticVariableaccessinTEST_MODE

• Senda50percentcommand.

• Setintegraltozero.

• LocatetheDAC_PERCENT

• WritethispercentagevaluetoIL_OFFSET

• WriteoriginalvaluetoIntegral

These tuning sets can be used to obtain initial values for Flowserve
products and comparable actuator sizes. The user may need to adjust
this tuning to achieve optimal performance for a particular application.

Table VIII: Factory Tuning Sets

Mfg. Tuning Set

VFactory_A 1.0 2.0 0.05 10 25

VFactory_B 1.0 2.5 0.05 10 50

VFactory_C 2.0 3.0 0.05 10 100

Valtek

Kammer

Automax

VFactory_D 4.0 5.0 0.05 10 200

VFactory_E 4.0 7.0 0.05 10 300

Trooper 48 0.4 0.5 0.05 25 31

Trooper 49 3.0 4.0 0.05 10 77.5

Trooper 48 0.4 0.5 0.05 25 31

Trooper 49 3.0 4.0 0.05 10 77.5

R1 0.3 0.5 0.05 10 3 to 5

R2 1.0 1.5 0.05 10 9 to 12

R3 1.3 2.0 0.05 10 16 to 19

R4 2.0 2.5 0.05 10 27 to 37

R5 2.5 3.6 0.05 10 48 to 75

R6 4.0 5.0 0.05 10 109

GAIN_

LOWER

GAIN_

UPPER

GAIN_

MULT

lgain

Comparable

Size (in

7.14 Alerts

7.14.1 FINAL_VALUE_CUTOFF

7.14.2 Effects of FINAL_VALUE_CUTOFF on
Operation

With the FINAL_VALUE_CUTOFF_LO set at 5 percent the positioner will
operate as follows: Assume that the present command signal is at 50
percent. If the command signal is decreased, the positioner will follow
the command until it reaches 5 percent.

At 5 percent, full actuator saturation will occur. The actuator will
maintain full saturation below 5 percent command signal. Now, as
the command increases, the positioner will remain saturated until the
command reaches 6 percent (remember the 1 percent hysteresis value
added by the positioner). At this point, the stem position will follow the
command signal.

If the FINAL_VALUE_CUTOFF_LO is set to 3 percent but the valve
will not go below 10 percent, STOP_LO_POS may be enabled. The

2

lower soft limit must be less than or equal to 0 percent in order for the

)

FINAL_VALUE_CUTOFF_LO to become active.

If soft stops are active (ie: STOP_LO_POS = 0 or STOP_HI_POS = 100)
FINAL_VALUE_CUTOFF is disabled.

7.14.3 Soft Limits

Unlike position alerts, soft limits prevent the stem position from going
below or above the configured limits. If the command signal is trying to
drive the position past one of the limits, the yellow LED will blink but the
stem position will remain at the set limit.

7.14.4 Travel Accumulator

The travel accumulator is equivalent to a car odometer and sums the
total valve movement. Using the user defined stroke length and travel
dead-band, the Logix 3400MD digital positioner keeps a running total
of valve movement. When the positioner first powers up, high and low
dead-band limits are calculated around the present position. When the
stem position exceeds the travel dead-band, the movement from the
center of the deadband region to the new position is calculated and
added to the travel accumulator. From this new position, deadband high
and low limits are again calculated.

The FINAL_VALUE_CUTOFF or tight shutoff feature of the Logix
3400MD digital positioner allows the user to control the level at which
the command signal causes full actuator saturation in the closed or
open position.

This feature can be used to guarantee actuator saturation in the
closed or open position or prevent throttling around the seat at small
command signal levels. To enable, use configuration to apply the
desired FINAL_VALUE_CUTOFF threshold.

NOTE: The positioner automatically adds a 1 percent hysteresis value to
the FINAL_VALUE_CUTOFF_LO setting to prevent jumping in and out of
saturation when the command is close to the setting.

EXAMPLE: The Logix 3400MD digital positioner has a default dead­band configuration of 20 percent. The valve has a 4 inch linear stroke.
When the valve first powers up, the command signal is 50 percent.
The unit will calculate a high travel threshold of 70 percent (50
percent present position plus 20 percent dead-band) and a low travel
threshold of 30 percent (50 percent present position minus 20 percent
dead-band). As long as the stem position remains greater than 30
percent and less than 70 percent, no additions are made to the travel
accumulator. Now, assume the stem position moves to 80 percent that
is outside the present dead-band. The Logix 3400MD digital positioner
calculates the stem movement and adds this number to the travel
accumulator.

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Logix 3400MD Digital Positioner FCD LGENIM3404-00 – 9/09

80 percent (present position) - 50 percent (previous) =
30 percent movement x 4-inch stroke = 1.2 inches

So, 1.2 inches is added to the travel accumulator. New dead-band
thresholds of 100 percent (80 percent present position plus 20 percent
dead-band) and 60 percent (80 percent present position minus 20
percent dead-band) are calculated. This process continues as the stem
position moves throughout its stroke range.

7.14.5 Cycle Counter

The cycle counter is another means of monitoring valve travel. Unlike
the travel accumulator, the stem position must do two things to count
as a cycle: exceed the cycle counter dead-band and change direction. A
cycle counter limit can also be written into the positioner. If this limit is
exceeded, the yellow LED will blink.

7.14.6 Position Deviation

If the stem position differs from the control command by a certain
amount for a given length of time, the yellow LED will blink to signify
excess deviation. The trip point and settling times are set from the
transducer function block.

7.14.7 Advanced and Features

NOTE: These features can be activated for full diagnostic functionality of
the system. These are contained in the transducer blocks. Refer to the
Installation and Reference Manual for a more detailed explanation.

7.14.8 Standard vs. Advanced Diagnostics

Advanced diagnostics models add top, bottom, and supply pressure
sensors. This allows for diagnostic functionalities such as loss of
pressure, advanced signatures, etc. Pro diagnostics adds the full
compliment of diagnostic features offered by the Logix 3400MD.

7.14.9 Temperature and Pressure Units

The desired temperature and pressure units can be set during configu­ration. Once set, all readings will be displayed in the desired units.

NOTE: Stroke length is for information only and is not used during
calibration.

Table IX: Transducer Block Characterization Parameters

Parameter Description Value - Meaning Comments

MODE_BLK The operating

CURVE_
SELECT

USER_
INTERFACE_
ACTIVE

CURVEX Numeric X value

CURVEY Numeric Y value

mode of the
transducer block

Selects the
characterization
curve type when
the DIP switch
is set to ‘Other’.
This parameter
is inactive when
the DIP switch
is selected to
‘Linear’.

Software version
of the physical
DIP switches.
The parameters
can be changed
either in the
parameter or at
the device via the
DIP switches.

array for custom
point. (1 x 21
array points)

array for custom
point. (1 x 21
array points)

Auto - Auto (target
mode)

OOS - Out of
Service

0 - Equal Percent Sets the charac-

1 - Quick Open Sets the character-

2 - Custom Sets the character-

1 - Air Action

2 - Characterization
Linear

3 - Rotary Actuator
Gain

X-axis value for
custom stroke
characterization
point. Range –10
to 110

Y-axis value for
custom stroke
characterization
point. Range –10
to 110

The transducer
block must be out
of service before
characterization can
be edited or changed

terization to equal
percent mode.

ization to quick open
mode.

ization to use the
curve fit param­eters CURVEX and
CURVEY.

Select 1=ATO or
0=ATC

Select 1=Linear or
0=Other

Three bits of the
prameter reflect the
value selected on the
Rotary Actuator Gan
switch as follows:

A=111, B=011,
C=101, D=001

E=110, F=010,
G=100, H=000

Pair each X-value
with corresponding
Y-value to define
the desired point.
Values must be in
ascending (or equal)
order.

7.14.10 Stroke Length

Stroke length is used by the travel accumulator. When the stroke
length and units are set, the length is used to determine the total travel
accumulated. The travel accumulator will have the units associated with
stroke.

EXAMPLE: Stroke length is set to four inches. If the valve is moved
from 0 percent to 100 percent, four inches will be added to the travel
accumulator. The travel accumulator units will be inches. If Stroke
length is 90 degrees for a rotary, the travel accumulator will now have
units of degree. A 0 percent to 100 percent stroke will add 90 to the
travel accumulator.

22

7.15 Characterization Retention

Once a custom curve has been loaded into the Logix 3400MD digital
positioner’s memory it is retained in the EPROM until it is either edited
or replaced. Turning Custom Characterization Active on or off now
selects between a linear response (off), or the new custom curve (on).
If either of the other two factory curves is selected it will overwrite
the custom curve in RAM only. The custom user-defined curve will
automatically be activated again when the factory curve is deselected.

Logix 3400MD Digital Positioner FCD LGENIM3404-00 – 9/09

7.15.1 Initiating a Valve Signature

A feature of the Logix 3400MD positioner is the ability to capture and
store a valve diagnostic signature. A signature is the collected data
response of the valve to a predefined set of operating conditions. This
stored data can later be uploaded to the host system for analysis of
potential problems. By comparing a baseline signature, when the valve
is new, to subsequent signatures at later times, a rate of change can be
tracked which can help predict possible faults in the valve before they
happen. This is called ‘predictive maintenance’. It is important to note
that the purpose of the positioner is to act as the data acquisition device
for the signature. Analysis of the data is not done on the device, but in
the supervisory system.

NOTE: Signature data is lost if the positioner is reset or if the power is
cycled

7.15.2 System Preparation

WARNING: By definition, the collection of the signature

0

requires the unmanaged operation of the positioner. Therefore,
the process must be in a safe operating mode where unex­pected movement of the valve will not cause a hazardous
condition.

Before a valve signature can be run, the Transducer Block must Out-of­Service (OOS).

7.15.3 Signature Procedure

Notice that the valve will move and FINAL_POSITION_VALUE will

change.

12. SIG_FLAGS indicates SIG COMPLETE.

13. Return the MODE_BLK to auto.

14. Notify control room the valve is back on-line. The stored signature

will remain in the Logix 3400MD digital positioner RAM until the
either the unit is powered down, or another signature is taken
which overwrites the previous one.

7.16 Step Signature

If a step signature was desired, simply do not select STEP_RAMP
in SIG_FLAGS, and then set the SIG_HOLD prior to selecting RUN/
BEGIN_SIG.

NOTE: SIG_RATE has no effect on Step Signature.

7.16.1 Collection of Stored Signature

The collection of the stored signature is accomplished by the host
system. It is not part of the device. See host system programming.
A simple utility using National Instruments NI-FBUS is available from
Flowserve for retrieving a signature file.

The retrieved file is stored in a text format that can be imported into
other programs for plotting and analysis. Contact Flowserve for more
details.

The following steps are an example of how to initiate a ramp signature
capture.

1. Make sure the process is in safe condition and notify the control
room that the valve will temporarily be taken off-line.

2. Verify preparedness to proceed.

3. Put the Transducer block MODE_BLK OOS

4. Set SIG_START to desired value.

5. Set SIG_STOP to desired value.

6. Set SAMPLE_TIME to desired value (typically 0.3).

7. Set SIG_RATE to desired value (typically 20).

8. In SIG_FLAGS select; RUN_RAMP.

9. In SIG_FLAGS, select RUN/BEGIN_SIG.

10. Write value to the Logix 3400MD digital positioner.

11. The valve will stroke to the beginning position, as defined by
SIG_START and will begin ramping to the desired ending position,
as defined by SIG_STOP.

7.17 Glossary

A/D Also called ADC. Analog-to-digital converter. An A/D converts an
analog signal into an integer count. This integer count is then used by
the microcontroller to process sensor information such as position,
pressure, and temperature.

D/A Also called DAC. Digital-to-analog converter. A D/A converts an
integer count into an analog output signal. The D/A is used to take a
number from the microcontroller and command an external device such
as a pressure modulator.

DTM (Device Type Manager) Provides a GUI nterface for the user to
easily view and analyze the status of the valve and positioner.

EEPROM (Electrically Erasable Programmable Read Only
Memory) A device that retains data even when power is lost.

Electrically erasable means that data can be changed. EEPROM have
a limited number of times data can be rewritten (typically 100,000 to
1,000,000 writes).

Micro-controller In addition to an integral CPU (microprocessor), the
micro-controller has built in memory and I/O functions such as A/D and
D/A.

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Logix 3400MD Digital Positioner FCD LGENIM3404-00 – 9/09

Microprocessor Semiconductor device capable of performing calculations, data transfer, and logic decisions. Also referred to as CPU (Central Processing
Unit).

Protocol A set of rules governing how communications messages are sent and received.

Resolution Resolution is a number which indicates the smallest measurement which can be made. You will often see analog-to-digital (A/D) converters

referred to as a 10-bit A/D or a 12-bit A/D. 10-bit and 12-bit are terms which indicate the total number of integer counts which can be used to measure a
sensor or other input. To determine the total integer count, raise 2 to the power of the number of bits.

Example: 12-bit A/D

Total integer number = 2

Number of Bits = 2

12

= 4096

Resolution is the measurement range divided by the maximum integer number.

Example: A valve has a 2-inch stroke and a 12-bit A/D is used to measure position.

Resolution = Stroke/(Maximum Integer for 12-bit) = 2 inch/4096 = 0.000488 inches

Sampling Taking readings at periodic time intervals.

Serial Channel Channel that carries serial transmission. Serial transmission is a method of sending information from one device to another. One bit is sent

after another in a single stream.

24

7.18 Transducer Block Parameters

Table X: Transducer Block Parameters

Logix 3400MD Digital Positioner FCD LGENIM3404-00 – 9/09

Fieldbus

Block
Index

Fieldbus Standard Parameters

10 TRANSDUCER_TYPE ALL UNSIGNED 16 N/A N/A N/A N/A NR Foundation Fieldbus Defined

11 XD_ERROR ALL UNSIGNED 8 N/A N/A N/A N/A R Foundation Fieldbus Defined

12 COLLECTION_

Control: Position Control Parameters

13 FINAL_VALUE XDTB_MAIN FLOAT_S 3 S_INT /100 CM_Digital NRW Command Input, Remote Digital

14 WORKING_SP XDTB_MAIN FLOAT 7 S_INT /100 CM_Pct_Target RW Command Input, Actual Target, %

15 FINAL_POSITION

20 DEVIATION_VALUE XDTB_MAIN FLOAT 12 S_INT /100 Dev_Instant R Control, FB, Valve Stem Deviation, %

23 DEVIATION_EFFORT XDTB_TECH FLOAT 14 S_INT /100 Dev_Sum R Control, DAC %, Deviation Term

24 PRESS_CTRL_

25 INTEGRAL_EFFORT XDTB_TECH FLOAT 16 S_INT /100 Integral_Sum R Control, DAC %, Integral Term

26 SPOOL_OFFSET XDTB_TECH FLOAT 17 S_INT /100 IL_Offset RW Calibration, DAC %, ILO Value @

27 SPOOL_COMMAND XDTB_TECH FLOAT 18 S_INT /100 IL_Cmd RW Control, DAC %, Total Effort

Fieldbus Variable

Name

0 BLK_DATA ALL RECORD N/A N/A N/A N/A SRW Foundation Fieldbus Defined

1 ST_REV ALL UNSIGNED 16 N/A N/A N/A N/A SR Foundation Fieldbus Defined

2 TAG_DESC ALL OCTET_

3 STRATEGY ALL UNSIGNED 16 N/A N/A N/A N/A SRW Foundation Fieldbus Defined

4 ALERT_KEY ALL UNSIGNED 8 N/A N/A N/A N/A SRW Foundation Fieldbus Defined

5 MODE_BLK ALL RECORD N/A N/A N/A N/A SRW Foundation Fieldbus Defined

6 BLOCK_ERR ALL BIT_STRING N/A N/A N/A N/A R Foundation Fieldbus Defined

7 UPDATE_EVT ALL RECORD N/A N/A N/A N/A RW Foundation Fieldbus Defined

8 BLOCK_ALM ALL RECORD N/A N/A N/A N/A RW Foundation Fieldbus Defined

9 TRANSDUCER_

DIRECTORY

DIRECTORY

VALUE

EFFORT

Transducer

Block

ALL ARRAY N/A N/A N/A N/A NR Foundation Fieldbus Defined

ALL ARRAY N/A N/A N/A N/A NR Foundation Fieldbus Defined

XDTB_MAIN FLOAT_S 10 S_INT /100 FB_Pct NR Control, FB, Valve Stem Position, %

XDTB_TECH FLOAT 15 S_INT /100 PS_Sum R Control, DAC %, Pressure Control

Fieldbus

Datatypes

STRING

Register Type

N/A N/A N/A N/A SRW Foundation Fieldbus Defined

Logix Positioner

Fix

Pt RdVariable Name

R/W Description

Parameter

Parameter

Parameter

Parameter

Parameter

Parameter

Parameter

Parameter

Parameter

Parameter

Parameter

Parameter

Parameter

Control, %

Term

50%

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Logix 3400MD Digital Positioner FCD LGENIM3404-00 – 9/09

Fieldbus

Block
Index

28 BACKOFF_EFFORT XDTB_TECH FLOAT 20 S_LONG NO Hall_Sum R Status, memory Backoff, Control

29 SPOOL_POSITION XDTB_TECH FLOAT 21 S_INT /100 Hall_Pct R Status, Memory Backoff, Relay

30 SPOOL_EFFORT XDTB_TECH FLOAT 22 S_INT /100 reserved for

31 PIEZO_OFFSET XDTB_TECH FLOAT 24 S_INT /100 Pzv_Null R Status, Piezo, Output Percent @ Null

32 PEIZO_COMMAND XDTB_TECH FLOAT 25 S_INT /100 Pzv_Cmd R Status, Piezo, Output Voltage in

21 PRESSURE_SUPPLY XDTB_MAIN FLOAT 27 U_LONG /100 PS_Supply_Press R Supply Pressure in User Units (Only

22 PRESSURE_PORT_A XDTB_MAIN FLOAT 28 S_INT /100 PS1_Pct R Port A Pressure in User Units (Only

23 PRESSURE_PORT_B XDTB_MAIN FLOAT 29 S_INT /100 PS2_pct R Port B Pressure in User Units (Only

79 PRESSURE_

101 FINAL_VALUE_

Control: Configuration & Gain Parameters

107 CONTROL_CONFIG XDTB_MAIN BIT_STRING 38 U_CHAR NO Control_Config NRW Setup, Valve Configuration (Std/Adv,

87 CURVE_SELECT XDTB_TECH UNSIGNED 8 39 U_CHAR NO Curve_Select SRW Select Characterization type when

28 P_GAIN XDTB_MAIN FLOAT 40 S_INT /100 PGain_Max SRW Setup, Gain Proportional, Maximum

35 P_GAIN_EFFECTIVE XDTB_TECH FLOAT 41 S_INT /100 Pgain_Instant R Control, Gain, Proportional,

36 P_GAIN_MULT XDTB_TECH FLOAT 42 S_INT /1000 PGain_Mult SRW Setup, Gain, Proportional, Multiplier

29 I_GAIN XDTB_MAIN INTEGER 16 44 S_INT NO IGAIN SRW Setup, Gain, Integral

30 D_GAIN XDTB_MAIN UNSIGNED 16 46 U_INT NO DT_Gain_Max SRW Setup, Gain, Derivitive, Basic

37 D_GAIN_EFFECTIVE XDTB_TECH UNSIGNED 16 47 U_INT NO DT_Gain_Cur R Status, Gain, Derivitive,

38 D_GAIN_FILTER XDTB_TECH UNSIGNED 16 48 S_INT NO DT_Depth SRW Setup, Gain, Derivitive, Depth

31 PRESS_CTRL_

39 PRESS_CTRL_

40 PRESS_CTRL_

41 PRESS_CTRL_SP XDTB_TACH FLOAT 53 S_INT NO PS_Target SRW Status Pressure Control, Target

Fieldbus Variable

Name

DIFFERENTIAL

RANGE

GAIN_MAX

GAIN_EFFECTIVE

GAIN_MULT

Transducer

Block

XDTB_MD FLOAT 30 S_INT /100 PS_Delta_Pct R Status, Pressure, Delta, Port 1-Port 2

XDTB_MAIN RECORD N/A N/A N/A N/A SRW Used to limit the command position

XDTB_MAIN FLOAT 50 S_INT /10 PS_Gain_Max SRW Setup, Pressure Control, Gain, Basic

XDTB_TECH FLOAT 51 S_INT /10 PS_Gain_Cur R Status, Pressure Control, Gain,

XDTB_TECH FLOAT 52 S_INT /100 PS_Mult SRW Setup, Pressure Control, Gain,

Fieldbus

Datatypes

Register Type

Logix Positioner

Fix

Pt RdVariable Name

spool effort

R/W Description

Term Value

Instant Position

R Status, Memory Backoff, Relay

Instant Position

Percent

active in Advanced or Pro Models)

active in Advanced or Pro Models)

Active in Advanced or Pro Models)

received from the AO block. FB Only

Parameter.

DA/SA, etc.)

the Characterization DIP switch is set

to ‘Other’

Instantaneous

Instantaneous

Instantaneous

Multiplier

Differential

26

Logix 3400MD Digital Positioner FCD LGENIM3404-00 – 9/09

Fieldbus

Block
Index

Control: Calibration Parameters

Fieldbus Variable

Name

32 PRESS_CTRL_

WINDOW

33 FINAL_VALUE_

CUTOFF_HI

34 FINAL_VALUE_

CUTOFF_LO

42 FINAL_VALUE_

CUTOFF_

HYSTERESIS

35 STOP_HI_POS XDTB_MAIN FLOAT 62 S_INT /100 SoftStopHigh SRW Setup, Soft Stop Limit, Upper

36 STOP_LO_POS XDTB_MAIN FLOAT 63 S_INT /100 SoftStopLow SRW Setup, Soft Stop Limit, Lower

37 STROKE_TIME_

OPEN_LIM

38 STROKE_TIME_

CLOSE_LIM

43 CURVE_X XDTB_TECH FLOAT 66 S_INT /100 CURVEx [1-11] SRW Setup, SW Characterization, X-Axis,

43 CURVE_X XDTB_TECH FLOAT 67 S_INT /100 CURVEx [12-21] SRW Setup, SW Characterization, X-Axis,

44 CURVE_Y XDTB_TECH FLOAT 68 S_INT /100 CURVEy [1-11] SRW Setup, SW Characterization, Y-Axis,

44 CURVE_Y XDTB_TECH FLOAT 69 S_INT /100 CURVEy [12-21] SRW Setup, SW Characterization, Y-Axis,

25 CALIBRATE XDTB_MAIN UNSIGNED 8 33 U_CHAR NO Cal_State RW Test, Calibration, Mode Setting

45 STROKE_TIME_CAL XDTB_TECH FLOAT 70 U_INT /100 StrokeTime R Calibration, Measured Stroke Time

46 STROKE_TIME_

DOWN

47 STROKE_TIME_UP XDTB_TECH FLOAT 72 U_INT /100 StrokeTimeUp R Calibration, Measured Stroke Time

48 HALL_DOWN XDTB_TECH UNSIGNED 16 75 U_INT NO Hall_Down SRW Calibration, Hall Sensor, A/D Counts,

49 HALL_UP XDTB_TECH UNSIGNED 16 76 U_INT NO Hall_Up SRW Calibration, Hall Sensor, A/D Counts,

50 HALL_RANGE XDTB_TECH UNSIGNED 16 77 U_INT NO Hall_Range SRW Calibration, FB, Valve Stem, A/D

51 HALL_AD_cOUNT XDTB_TECH UNSIGNED 16 78 AD_REG NO Hall_Instant R Status, Hall Sensor, A/D Counts,

52 HALL_NULL_PCT XDTB_TECH UNSIGNED 16 79 S_INT NO Hall_Null SRW Calibration, Hall Sensor, A/D Counts,

53 FB_ZERO XDTB_TECH UNSIGNED 16 80 U_INT NO FB_Zero SRW Caliberation, FB, Valve Stem, A/D

Transducer

Block

XDTB_MAIN FLOAT 54 S_INT /100 PS_Window SRW Setup, Pressure Control, Window

XDTB_MAIN FLOAT 59 S_INT /100 MAXcutoff SRW Setup, MPC, Tight Shutoff

XDTB_MAIN FLOAT 60 S_INT /100 MINcutoff SRW Setup, MPC, Tight Shutoff

XDTB_TECH FLOAT 61 S_INT /100 MPChyst SRW Setup, MPC, Tight Shutoff Hysteresis

XDTB_MAIN FLOAT_S 64 U_INT NO StrokeOpenTime NRW Setup, Stroke Delay Time, Opening

XDTB_MAIN FLOAT_S 65 U_INT NO StrokeCloseTime NRW Setup, Stroke Delay Time, Closing

XDTB_TECH FLOAT 71 U_INT /100 StrokeTimeDn R Calibration, Measured Stroke Time

Fieldbus

Datatypes

Register Type

Logix Positioner

Fix

Pt RdVariable Name

R/W Description

Size

Threshold, Open

Threshold, Closed

Points 1-11

Points 12-21

Points 1-11

Points 12-21

Down Position

Up Position

Counts, Range

Instantaneous

Null Position

Counts, @Zero%

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Logix 3400MD Digital Positioner FCD LGENIM3404-00 – 9/09

28

Fieldbus

Block

Fieldbus Variable

Name

Index

54 HOURS_SINCE_RESET XDTB_MAIN FLOAT 138 U_LONG /10 Reset_Hours R Status, System, Time Elapsed,

55 HOURS_LIFETIME XDTB_MAIN FLOAT 139 U_LONG /10 Lifetime_Hours R Status, System, Time Elapsed,

86 ERROR_HIST XDTB_TECH ARRAY 140 U_CHAR NO ErrorHist [16] R History of the last error/blink

Signature Parameters

56 SIG_START XDTB_MAIN FLOAT 142 S_INT /100 SIGstart NRW Config, Signature, Starting

57 SIG_STOP XDTB_MAIN FLOAT 143 S_INT /100 SIGstop NRW Config, Signature, Stopping

58 SIG_RATE XDTB_MAIN FLOAT 144 U_INT /100 SIGtime NRW Time that a Signature takes to

59 SIG_HOLD XDTB_MAIN FLOAT 145 U_INT /100 SIGhold NRW Time to continue to log

61 SIG_FLAGS XDTB_MAIN BIT_STRING 146 U_CHAR NO SIGflags NRW Signture status and command

60 SIG_INDEX XDTB_MAIN UNSIGNED 16 147 U_INT NO ReadSigIndex NRW Index into the Signature Data

88-113 SIG_DATAn XDTB_TECH ARRAY 148 S_INT [24] /100 SigData R Signature Data Array

System Setup & Special Diagnostics Parameters

33 USER_INTERFACE_

INSTANT

34 USER_INTERFACE_

ACTIVE

24 TEST_MODE XDTB_MAIN BIT_STRING 32 U_CHAR NO control_

62 TRAVEL_ACCUM_UNITS XDTB_MAIN UNSIGNED 8 150 U_CHAR NO TravelUnits SRW Setup, Units, Travel Distance

63 PRESSURE_UNITS XDTB_MAIN UNSIGNED 8 151 U_CHAR NO PressUnits SRW Setup, Units, Pressure

64 INTERNAL_TEMP_UNITS XDTB_MAIN UNSIGNED 8 152 U_CHAR NO TempUnits SRW Setup, Units, Temperature

65 XD_FSTATE_OPT XDTB_MAIN UNSIGNED 8 153 U_CHAR NO Fail_mode SRW

66 ELECTRONICS_SN XDTB_MAIN VISIBLE_

67 SOFTWARE_VER_MAJOR XDTB_MAIN UNSIGNED 16 156 U_INT NO ESR_Major NR Software Revision Major

68 SOFTWARE_VER_MINOR XDTB_MAIN UNSIGNED 16 157 U_INT NO ESR_Minor NR Software Revision Minor

69 SOFTWARE_DATE_CODE XDTB_MAIN VISIBLE_

73 FB_POSITION_FILTER XDTB_TECH UNSIGNED 16 162 U_INT NO FB_Depth SRW Setup, Dampening, Position,

75 LOAD_EE_DEFAULTS XDTB_TECH UNSIGNED 8 173 U_CHAR NO EEmode RW Test, FRAM, Mode Setting

System Setup & Special Diagnostc Fieldbus Only Parameters

Transducer

Block

XDTB_TECH BIT_STRING 36 U_INT NO UI_Instant R Curent hardware DIP switch

XDTB_TECH BIT_STRING 37 U_INT NO UI_Saved RW Setup button and DIP switch

Fieldbus

Datatypes

STRING

STRING

Logix Positioner

Fix

Register Type

155 U_CHAR NO ESN [8] NR Electronics Serial Number, used

158 STRING NO ESR_Build [6] SRW Embedded Software Revision

Pt RdVariable Name

disable_flg

R/W Description

Mem Reset

Lifetime

codes

Command in %

Command in %

complete a ramp cycle

signature data after reaching

SIG_STOP

flags

Array

and GAIN control seetings - not

applied to control algorythms.

setting currently applied to

control algorythms

RW Turns on and off spceial

diagnostic capabilities

for initial PD tag

Date Stamp

Depth

Logix 3400MD Digital Positioner FCD LGENIM3404-00 – 9/09

Fieldbus

Block

Fieldbus Variable

Name

Transducer

Block

Index

109 MAIN_BLOCK_TEST XDTB_MAIN ARRAY N/A N/A N/A N/A R Diagnostic Use Only

111 MAIN_EXEC_DELAY XDTB_MAIN UNSIGNED 16 N/A N/A N/A N/A SRW Diagnostic Use Only

80 MD_BLOCK_TEST XDTB_MD ARRAY N/A N/A N/A N/A R Diagnostic Use Only

81 MD_EXEC_DELAY XDTB_MD UNSIGNED 16 N/A N/A N/A N/A SRW Diagnostic Use Only

83-91 TREND_DATA_n XDTB_MD ARRAY N/A N/A N/A N/A R Trend Data

75 NVRAM_WRITE_CYCLES XDTB_TECH UNSIGNED 32 N/A N/A N/A N/A NR Number of cycles that NVRAM

76 GENERIC_PARAMETER XDTB_TECH GENERIC_S N/A N/A N/A N/A RW Used for reading and writing

77 SPI_TEST_RCV XDTB_TECH ARRAY N/A N/A N/A N/A R Diagnostic Use Only

78 SPI_TEST_TX XDTB_TECH ARRAY N/A N/A N/A N/A R Diagnostic Use Only

79 TECH_BLOCK_TEST XDTB_TECH ARRAY N/A N/A N/A N/A R Diagnostic Use Only

80 TECH_EXEC_DELAY XDTB_TECH UNSIGNED 16 N/A N/A N/A N/A SRW Diagnostic Use Only

81 LX_SPI_STATUS_FLAGS XDTB_TECH BIT_STRING N/A N/A N/A N/A NR Status of Fieldbus SPI

82 SUPPLY_PRESSURE_PCT XDTB_TECH FLOAT N/A N/A N/A N/A R Supply Pressure in Percent

83 PORT_A_PRESSURE_PCT XDTB_TECH FLOAT N/A N/A N/A N/A R Port A Pressure in Percent

84 PORT_B_PRESSURE_PCT XDTB_TECH FLOAT N/A N/A N/A N/A R Port B Pressure in Percent

User Information Parameters

95 ACT_AREA XDTB_MAIN FLOAT 209 U_INT /10 ACTarea NRW Actuator Area

70 VALVE_MAN_ID XDTB_MAIN UNSIGNED 8 210 U_CHAR NO VALVEman NRW User Info, Valve, Manufacturer

72 VALVE_TYPE XDTB_MAIN UNSIGNED 8 211 U_CHAR NO VALVEtype NRW User Info, Valve, Type

73 VALVE_SIZE XDTB_MAIN UNSIGNED 8 212 U_CHAR NO VALVEsize NRW User Info, Valve, Size

74 VALVE_CLASS XDTB_MAIN UNSIGNED 8 213 U_CHAR NO VALVEclass NRW User Info, Valve, Pressure Class

75 VALVE_ENDCON XDTB_MAIN UNSIGNED 8 214 U_CHAR NO VALVEendcon NRW User Info, Valve, End

76 VALVE_BODYMAT XDTB_MAIN UNSIGNED 8 215 U_CHAR NO VALVEbodymat NRW User Info, Valve, Body Material

77 VALVE_PACKTYPE XDTB_MAIN UNSIGNED 8 216 U_CHAR NO VALVEpacktype NRW User Info, Valve, Packing Type

78 LEAK_CLASS XDTB_MAIN UNSIGNED 8 217 U_CHAR NO LEAKclass NRW User Info, Valve, Shutoff

79 VALVE_FLAGES XDTB_MAIN UNSIGNED 8 218 U_CHAR NO VALVEflags NRW User Info, Valve, Configuration

80 VALVE_TRIMMAT XDTB_MAIN UNSIGNED 8 219 U_CHAR NO VALVEtrimmat NRW User Info, Vlave, Trim Material

81 VALVE_TRIMCHAR XDTB_MAIN UNSIGNED 8 220 U_CHAR NO VALVEtrimchar NRW User Info, Valve, Trim

82 VALVE_TRIMTYPE XDTB_MAIN UNSIGNED 8 221 U_CHAR NO VALVEtrimtype NRW User Info, Valve, Trim Type

Fieldbus

Datatypes

Logix Positioner

Register Type

Fix

Pt RdVariable Name

R/W Description

has been written to

data to control board registers

communications with controller

board

(Only active in Advanced or Pro

Models)

(Only active in Advanced or Pro

Models)

(Only active in Advanced or Pro

Models)

Rating

Connection

Leakage Class

(Flow Direction)

Characteristic

29

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Logix 3400MD Digital Positioner FCD LGENIM3404-00 – 9/09

Fieldbus

Block

Fieldbus Variable

Name

Index

83 VALVE_TRIMNO XDTB_MAIN UNSIGNED 8 222 U_CHAR NO VALVEtrimno NRW User Info, Valve, Trim Diameter

84 VALVE_SN XDTB_MAIN VISIBLE_

85 STEM_DIAM XDTB_MAIN FLOAT 224 FLOAT NO STEMdiam NRW User Info, Vlave, Stem/Shaft

86 RATED_TRAVEL XDTB_MAIN FLOAT 225 FLOAT NO RATEDtrav NRW User Info, Valve, Rated Travel

87 INLET_PRESS XDTB_MAIN FLOAT 226 FLOAT NO INLETpress NRW User Info, Valve, Upstream

88 OUTLET_PRESS XDTB_MAIN FLOAT 227 FLOAT NO OUTLETpress NRW User Info, Valve, Downstream

89 ACT_MAN_ID XDTB_MAIN UNSIGNED 8 228 U_CHAR NO ACTman NRW User Info, Actuator,

90 ACT_FAIL_ACTION XDTB_MAIN UNSIGNED 8 N/A N/A N/A N/A NRW For Future Use

91 ACT_MODEL_NUM XDTB_MAIN VISIBLE_

92 ACT_SN XDTB_MAIN VISIBLE_

93 ACT_TYPE XDTB_MAIN UNSIGNED 8 232 U_CHAR NO ACTtype NRW User Info, Actuator, Type

94 ACT_SIZE XDTB_MAIN UNSIGNED 8 233 U_CHAR NO ACTsize NRW User Info, Actuator, Size

95 ACT_AREA XDTB_MAIN FLOAT 209 U_INT /10 ACTarea NRW Actuator Area

96 SPRING_TYPE XDTB_MAIN UNSIGNED 8 234 U_CHAR NO SPRINGtype NRW User Info, Actuator, Spring

97 PO_DATE XDTB_MAIN VISIBLE_

98 INSTALL_DATE XDTB_MAIN VISIBLE_

71 VALVE_MODEL_NUM XDTB_MAIN VISIBLE_

99 MFG_PHONE XDTB_MAIN VISIBLE_

100 PUR_ORDER_NUM XDTB_MAIN VISIBLE_

102 XD_CAL_LOC XDTB_MAIN VISIBLE_

104 XD_CAL_WHO XDTB_MAIN VISIBLE_

Devide Mode and Status Parameters

13 DIAGNOSTICS_LEVEL XDTB_MD UNSIGNED 8 258 U_CHAR NO LD_MD_MODE R Is this an LD or an MD Device

16 CONTROLLER_STATE_

STATUS

18 POSITIONER_STATUS XDTB_MAIN BIT_STRING 261 U_CHAR NO Positioner_

14 MECHANICAL_STATUS XDTB_MD BIT_STRING 262 U_CHAR NO Mechanical_

Transducer

Block

XDTB_MAIN BIT_STRING 260 U_CHAR NO Mode_Status R Status, Alarm, Mode Flags

Fieldbus

Datatypes

STRING

STRING

STRING

STRING

STRING

STRING

STRING

STRING

STRING

STRING

Logix Positioner

Fix

Register Type

223 STRING NO VALVEsn NRW User Info, Vlave, Serial Number

N/A N/A N/A N/A NRW For Future Use

231 U_CHAR NO ACTsn NRW User Info, Actuator Serial

235 STRING NO PO_date NRW User Info, Purchase Order Date

236 STRING NO INSTALL_date NRW User Info, Install Date

N/A N/A N/A N/A NRW User Info, Valve Model Number

N/A N/A N/A N/A NRW User Info, Manufacturer Phone

N/A N/A N/A N/A NRW User Info, Purchase Order

N/A N/A N/A N/A SRW User Info, Calibration Location

N/A N/A N/A N/A SRW User Info, Calibration done by

Pt RdVariable Name

Status

Status

R/W Description

Diameter

Pressure

Pressure

Manufacturer

Number

Type: single, dual, etc.

Number

Number

R Status, Alarm, Positioner Flags

R Status, Alarm, Mechanical Flags

30

Logix 3400MD Digital Positioner FCD LGENIM3404-00 – 9/09

Fieldbus

Block

Fieldbus Variable

Name

Transducer

Block

Index

26 CALIBRATION_STATUS XDTB_MAIN BIT_STRING 263 U_CHAR NO Calibration_

13 ELECTRONIC_STATUS XDTB_TECH BIT_STRING 264 U_CHAR NO Electronic_

21 PRESSURE_STATUS XDTB_TECH BIT_STRING 265 U_CHAR NO Pressure_Status R Status, Alarm, Pressure Flags

15 INNERLOOP_STATUS XDTB_TECH BIT_STRING 266 U_CHAR NO Inner

17 OUTERLOOP_STATUS XDTB_TECH BIT_STRING 267 U_CHAR NO Outer

19 CONFIGURATION_STATUS XDTB_TECH BIT_STRING 269 U_CHAR NO Configuration_

17 CONTROLLER_STATE_

MASK

19 POSITIONER_MASK XDTB_MAIN BIT_STRING 271 U_CHAR NO Positioner_Mask NRW Status, Alarm, Positioner Flags

15 MECHANICAL_MASK XDTB_MD BIT_STRING 272 U_CHAR NO Mechanical_

14 ELECTRONIC_MASK XDTB_TECH BIT_STRING 274 U_CHAR NO Electronic_Mask NRW Status, Alarm, Electronic Flags

22 PRESSURE_MASK XDTB_TECH BIT_STRING 275 U_CHAR NO Pressure_Mask NRW Status, Alarm, Pressure Flags

16 INNERLOOP_MASK XDTB_TECH BIT_STRING 276 U_CHAR NO Inner

18 OUTERLOOP_MASK XDTB_TECH BIT_STRING 277 U_CHAR NO Outer

20 CONFIGURATION_MASK XDTB_TECH BIT_STRING 279 U_CHAR NO Configuration_

113 BLINK_CODE XDTB_MAIN UNSIGNED 8 283 U_CHAR NO Blink_Code R LED Status Blink Code

Pro Mode Parameters

24 PST_TIME_BREAKAWAY XDTB_MD FLOAT 285 U_INT /100 PST_

25 PST_PRESSURE_DIFF XDTB_MD FLOAT 286 U_INT /100 PST_

26 PST_TIME_TO_TARGET XDTB_MD FLOAT 287 U_INT /100 PST_

27 PST_RESULT XDTB_MD UNSIGNED 8 288 U_CHAR NO PST_Result R Partial Stroke Test Result (Pass

28 PST_TIME_LIMIT XDTB_MD FLOAT 289 U_INT /100 PST_TimeLimit RW Partial Stroke Test Time Limit

29 ACTUATOR_RATIO XDTB_MD FLOAT 290 U_INT /100 Actuation_Ratio RW Actuation Ratio In Percent

30 ACTUATION_RATIO_

HIGH_START_LIMIT

31 ACTUATION_RATIO_

HIGH_END_LIMIT

32 ACTUATION_RATIO_

PERCENT_YELLOW

50 SPOOL_RESPONSE_TIME XDTB_MD FLOAT 295 U_INT NO Spool_Time_86 NR Spool Response Time

51 SPOOL_START_LIMIT XDTB_MD FLOAT 296 U_INT NO SS_LowLimit NRW Spool Start Limit

XDTB_MAIN BIT_STRING 270 U_CHAR NO Mode_Mask NRW Status, Alarm, Mode Flags

XDTB_MD FLOAT 291 U_INT /100 AR_HighStart

XDTB_MD FLOAT 292 U_INT /100 AR_HighEnd

XDTB_MD FLOAT 293 U_INT /100 AR_Percent

Fieldbus

Datatypes

Logix Positioner

Register Type

Fix

Pt RdVariable Name

Status

Status

Loop_Status

Loop_Status

Status

Mask

Loop_Mask

Loop_Mask

Mask

TimeBreakaway

PressureDiff

TimeToTarget

Limit

Limit

Yellow

R/W Description

R Status, Alarm, Calibration Flags

R Status, Alarm, Electronic Flags

R Status, Alarm, Inner Loop Flags

R Status, Alarm, Outer Loop Flags

R Status, Alarm, Configuation

Flags

NRW Status, Alarm, Mechanical Flags

NRW Status, Alarm, Inner Loop Flags

NRW Status, Alarm, Outer Loop Flags

NRW Status, Alarm, Configuration

Flags

NR Partial Stroke Test breakaway

time

R Partial Stroke Test Pressure

Differential

NR Partial Stroke Test Time to

Target

or Fail)

RW Actuation Ratio High Start Limit

RW Actuation Ratio High End Limit

NR Actuation Ration Percent Yellow

31

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Logix 3400MD Digital Positioner FCD LGENIM3404-00 – 9/09

32

Fieldbus

Block

Fieldbus Variable

Name

Index

52 SPOOL_END_LIMIT XDTB_MD FLOAT 297 U_INT NO SS_highLimit NRW Spool End Limit

53 SPOOL_PERCENT XDTB_MD FLOAT 298 U_INT /100 SS_pctYellow R Spool Percent Yellow

16 VALVE_TRAVEL_

DISTANCE

17 VALVE_TRAVEL_HIGH_

START

18 VALVE_TRAVEL_HIGH_

END

19 VALVE_TRAVEL_

PERCENT_YELLOW

20 VALVE_CYCLE_COUNT XDTB_MD USNIGNED 32 305 U_LONG NO ValveCycle

21 VALVE_CYCLE_HIGH_

START

22 VALVE_CYCLE_HIGH_

END

23 VALVE_CYCLE_

PERCENT_YELLOW

40 SPOOL_TRAVEL_

PERCENT

38 SPOOL_TRAVEL_HIGH_

START_LIMIT

39 SPOOL_TRAVEL_HIGH_

END_lIMIT

41 SPOOL_TRAVEL_

PERCENT_YELLOW

35 SPOOL_CYCLES XDTB_MD UNSIGNED 32 315 U_LONG NO SpoolCycles NR Spool Cycles

33 SPOOL_CYCLE_HIGH_

START_LIMIT

34 SPOOL_CYCLE_HIGH_

END_LIMIT

37 SPOOL_CYCLE_

PERCENT_YELLO

36 CYCLE_TRAVEL_RESET XDTB_MD BIT_STRING 319 U_CHAR NO SpoolCycle

42 TREND_STATE XDTB_MD UNSIGNED 8 321 U_CHAR NO TrendLock RW Trending State

43 TREND_INDEX XDTB_MD UNSIGNED 8 322 U_CHAR NO TTIndex RW Index into the Trending Data

44 TREND_DATE XDTB_MD UNSIGNED 8 323 U_CHAR NO DateTimeStamp R Reserved for Future Use

83-91 TREND_DATA_n XDTB_MD ARRAY 324 ARRAY NO TrendData R Trending Data Array

58 FORCE_OF_PRESSURE XDTB_MD INTEGER 16 331 S_INT NO Fp R Force of Pressure

59 FORCE_SPRING XDTB_MD INTEGER 16 332 S_INT NO Fs R Spring Force

60 FORCE_ACTUATOR XDTB_MD INTEGER 16 334 S_INT NO Fa R Actuator Force

Transducer

Block

XDTB_MD FLOAT 301 U_LONG /100 ValveTravel

XDTB_MD FLOAT 302 U_LONG /100 ValveTravelHigh

XDTB_MD FLOAT 303 U_LONG /100 ValveTravelHigh

XDTB_MD FLOAT 304 U_INT /100 ValveTravel

XDTB_MD UNSIGNED 32 306 U_LONG NO ValveCycleHigh

XDTB_MD UNSIGNED 32 307 U_LONG NO ValveCycleHigh

XDTB_MD FLOAT 308 U_INT /100 ValveCycle

XDTB_MD FLOAT 311 U_LONG /100 SpoolTravel R Spool Travel in Percent

XDTB_MD FLOAT 312 U_LONG /100 ST_HighStart

XDTB_MD FLOAT 313 U_LONG /100 ST_HighEnd

XDTB_MD FLOAT 314 U_INT /100 ST_pctYellow NR Spool Travel Percent Yellow

XDTB_MD UNSIGNED 32 216 U_LONG NO SC_HighStart

XDTB_MD UNSIGNED 32 317 U_LONG NO SC_HighEnd

XDTB_MD FLOAT 318 U_INT /100 SC_pct_Yellow NR Spool Cycle Percent Yellow

Fieldbus

Datatypes

Logix Positioner

Register Type

Fix

Pt RdVariable Name

Distance

Start

End

PercentYellow

Count

Start

End

PercentYellow

Limit

Limit

Limit

Limit

TravelReset

R/W Description

R Valve Travel Distance

RW Valve Travel High Start

RW Valve Travel High End

NR Valve Travel Percent Yellow

R Valve Cycle Count

RW Valve Cycle High Start

RW Valve Cycle High End

NR Valve Cycle Percent Yellow

RW Spool Travel High Start Limit

RW Spool Travel High End Limit

RW Spool Cycle High Start Limit

RW Spool Cycle High End Limit

RW Reset Bits to reset the Spool

Cycle and the Spool Travel

Parameters

Array

Logix 3400MD Digital Positioner FCD LGENIM3404-00 – 9/09

Fieldbus

Block

Fieldbus Variable

Name

Transducer

Block

Index

61 DEVIATION_TIMES_

EFFECTIVE_GAIN

54 PNEUMATIC_LEAK XDTB_MD FLOAT 341 FLOAT NO Leak NR Pneumatic Leak Detected

55 PNEUMATIC_LEAK_

START

56 PNEUMATIC_LEAK_END XDTB_MD FLOAT 343 FLOAT NO LK_highLimit NRW Pneumatic Leak End

57 PNEUMATIC_LEAK_

PERCENT_YELLOW

62 WORST_VALVE_HEALTH XDTB_MD FLOAT 346 U_INT /100 Worst_ValvePct R Valve Health

63 WORST_ACTUATOR_

HEALTH

64 WORST_POSITIONER_

HEALTH

65 WORST_CONTROL_

HEALTH

66 SUPPLY_PRESSURE_

HIGH_START_LIMIT

67 SUPPLY_PRESSURE_

LOW_START_LIMIT

68 SUPPLY_PRESSURE_

LOW_END_LIMIT

69 SUPPLY_PRESSURE_

HIGH_PERCENT

70 SUPPLY_PRESSURE_

LOW_PERCENT

82 FRICTION_UNITS XDTB_MD UNSIGNED 8 360 U_CHAR NO FRICTION_

71 FRICTION XDTB_MD INTEGER16 362 S_INT NO FrContAll R Friction

72 FRICTION_STARTING XDTB_MD INTEGER16 363 U_INT NO StartingFriction R Starting Friction

73 FRICTION_HIGH_START_

LIMIT

74 FRICTION_HIGH_END_

LIMIT

75 FRICTION_LOW_START_

LIMIT

76 FRICTION_LOW_END_

LIMIT

77 FRICTION_HIGH_

PERCENT_YELLOW

78 FRICTION_LOW_

PERCENT_YELLOW

Logix Data Accessable Only Through Generic Parms

N/A N/A N/A N/A 4 S_INT /100 CM_Jog N/A Command Input, Local Jog

XDTB_MD INTEGER 16 335 S_INT NO Dev_Sum R Sumation of Deviation

XDTB_MD FLOAT 342 FLOAT NO LK_lowLimit NRW Penumatic Leak Start

XDTB_MD FLOAT 344 U_INT /100 LK_pctYellow NR Pneumatic Leak Percent Yellow

XDTB_MD FLOAT 347 U_INT /100 Worst_ActurPct R Actuator Health

XDTB_MD FLOAT 348 U_INT /100 Worst_PosnrPct R Positioner Health

XDTB_MD FLOAT 349 U_INT /100 Worst_CntrlPct R Control Health

XDTB_MD FLOAT 353 U_INT /100 PS_HighStart

XDTB_MD FLOAT 354 U_INT /100 PS_LowStart

XDTB_MD FLOAT 355 U_INT /100 PS_LowEnd

XDTB_MD FLOAT 356 U_INT /100 PS_HighPct

XDTB_MD FLOAT 357 U_INT /100 PS_LowPct

XDTB_MD INTEGER 16 364 U_INT NO FR_HighStart

XDTB_MD INTEGER 16 365 U_INT NO FR_HighEnd

XDTB_MD INTEGER 16 366 U_INT NO FR_LowStart

XDTB_MD INTEGER 16 367 U_INT NO FR_LowEnd

XDTB_MD FLOAT 368 U_INT /100 FR_HighPct

XDTB_MD FLOAT 369 U_INT /100 FR_LowPct

Fieldbus

Datatypes

Logix Positioner

Register Type

Fix

Pt RdVariable Name

Limit

Limit

Limit

Yellow

Yellow

UNITS

Limit

Limit

Limit

Limit

Yellow

Yellow

R/W Description

RW Supply Pressure High Start

Limit

RW Supply Pressure Low Start

Limit

RW Supply Pressure Low End Limit

NR Supply Pressure High Percent

NR Supply Pressure Low Percent

RW Units used to display friction in

RW Friction High Start Limit

RW Friction High End Limit

RW Friction Low Start Limit

RW Friction Low End Limit

NR Friction High Percent Yellow

NR Friction Low Percent Yellow

Control, %

33

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Logix 3400MD Digital Positioner FCD LGENIM3404-00 – 9/09

34

Fieldbus

Block

Fieldbus Variable

Name

Index

N/A N/A N/A N/A 5 S_INT /100 CM_Sig N/A Command Input, Signature

N/A N/A N/A N/A 6 S_INT /100 CM_Pct_Final N/A Command Input, Final Value, %

N/A N/A N/A N/A 19 U_CHAR NO control_

N/A N/A N/A N/A 161 S_INT NO JogStep N/A Config, Jog Cal, Initial Step Size

N/A N/A N/A N/A 163 U_INT NO ILtries N/A Test, Calibration, ILO Attempts

N/A N/A N/A N/A 164 U_INT /100 DropOutDelay N/A Config, AI Command, Dropout

N/A N/A N/A N/A 165 U_INT NO BootUp_Delay N/A Config, Power-Good Delay

N/A N/A N/A N/A 166 S_INT NO FB_Cos_Offset N/A Config, Cosine Linearization

N/A N/A N/A N/A 167 U_CHAR /100 LedTimeOn N/A Config, LED Blinks, Time-On

N/A N/A N/A N/A 168 U_CHAR /100 LedTimeOff N/A Config, LED Blinks, Time-Off

N/A N/A N/A N/A 169 U)CHAR NO PageNum N/A For Future Use

N/A N/A N/A N/A 171 U_INT NO SPI_Cur N/A Test, SPI Bus, Current Software

N/A N/A N/A N/A 174 U_INT NO temp_unit N/A Test, FRAM, Delay Before

N/A N/A N/A N/A 175 U_CHAR NO EEchksum N/A Test, FRAM, Checksum Value

N/A N/A N/A N/A 176 U_CHAR NO ReadyFlag N/A Test, System, Used internally by

N/A N/A N/A N/A 177 U_INT NO NoSupplyCnt N/A Test, Piezo, Force Memory

N/A N/A N/A N/A 178 U_INT NO ef_crc N/A For Future Use

N/A N/A N/A N/A 179 U_CHAR NO ef_result N/A For Future Use

N/A N/A N/A N/A 180 AD_REG NO ADC12MEM0 N/A Test, A/D Counts, Stem

N/A N/A N/A N/A 181 AD_REG NO ADC12MEM1 N/A Test, A/D Counts, Loop Current

N/A N/A N/A N/A 182 AD_REG NO ADC12MEM2 N/A Test, A/D Counts, Pressure,

N/A N/A N/A N/A 183 AD_REG NO ADC12MEM3 N/A Test, A/D Counts, Hall Sensor,

N/A N/A N/A N/A 184 AD_REG NO ADC12MEM4 N/A Test, A/D Counts, Shunt

N/A N/A N/A N/A 185 AD_REG NO ADC12MEM5 N/A Test, A/D Counts, Piezo Volts

N/A N/A N/A N/A 186 AD_REG NO ADC12MEM6 N/A Test, A/D Counts, Hall Sensor,

N/A N/A N/A N/A 187 AD_REG NO ADC12MEM7 N/A Test, A/D Counts Step Position,

N/A N/A N/A N/A 188 AD_REG NO ADC12MEM8 N/A For Future Use

N/A N/A N/A N/A 190 U_CHAR NO P0IN_ N/A Test, Direct I/O, Port 0

N/A N/A N/A N/A 191 U_CHAR NO P1IN_ N/A Test, Direct I/O, Port 1

Transducer

Block

Fieldbus

Datatypes

Logix Positioner

Register Type

Fix

Pt RdVariable Name

disable_fld

R/W Description

Test, %

N/A For Future Use

on Previous Cal

Filter Delay

Offset

Master

Saving

the OS Scheduler

Pulse to Active

Position, Conditioned

Multiplexed

Conditioned

Regulator Volts

Raw

Raw

Logix 3400MD Digital Positioner FCD LGENIM3404-00 – 9/09

Fieldbus

Block
Index

N/A N/A N/A N/A 192 U_CHAR NO P2IN_ N/A Test, Direct I/O, Port 2

N/A N/A N/A N/A 193 U_CHAR NO P3IN_ N/A Test, Direct I/O, Port 3

N/A N/A N/A N/A 194 U_CHAR NO P4IN_ N/A Test, Direct I/O, Port 4

N/A N/A N/A N/A 195 U_CHAR NO P5IN_ N/A Test, Direct I/O, Port 5

N/A N/A N/A N/A 196 U_CHAR NO P6IN_ N/A Test, Direct I/O, Port 6

N/A N/A N/A N/A 197 U_CHAR NO P7IN_ N/A Test, Direct I/0, Port 7

N/A N/A N/A N/A 198 U_CHAR NO P8IN_ N/A Test, Direct I/O Port 8

Parameters reserved for Future Use

108 MISC_CONFIG XDTB_MAIN BIT_STRING 160 U_CHAR NO Misc_Config NRW Reserved Flags for Future Use

46 RESERVED XDTB_MD FLOAT N/A N/A N/A N/A RW Reserved for Future Use

47 RESERVED XDTB_MD FLOAT N/A N/A N/A N/A RW Reserved for Future Use

48 RESERVED XDTB_MD FLOAT N/A N/A N/A N/A RW Reserved for Future Use

49 RESERVED XDTB_MD FLOAT N/A N/A N/A N/A RW Reserved for Future Use

45 RESERVED XDTB_MD FLOAT N/A N/A N/A N/A RW Reserved for Future Use

27 RESERVED XDTB_MAIN FLOAT N/A N/A N/A N/A RW Reserved for Future Use

39 RESERVED XDTB_MAIN FLOAT N/A N/A N/A N/A RW Reserved for Future Use

105 RESERVED XDTB_MAIN FLOAT N/A N/A N/A N/A RW Reserved for Future Use

106 RESERVED XDTB_MAIN FLOAT N/A N/A N/A N/A RW Reserved for Future Use

110 RESERVED XDTB_MAIN FLOAT N/A N/A N/A N/A RW Reserved for Future Use

112 RESERVED XDTB_MAIN FLOAT N/A N/A N/A N/A RW Reserved for Future Use

Fieldbus Variable

Name

Transducer

Block

Fieldbus

Datatypes

Logix Positioner

Register Type

Fix

Pt RdVariable Name

R/W Description

Definitions:

XDTB_MAIN - Main Transducer Block - Contains parameters used •
mostly for command.

XDTB_TECH - Technician Transducer Block - Contains diagnostics and
uncommon setup parameters

XDTB_MD - MD Transducer Block - Contains the PRO diagnostic
parameters

R - Parameter is Readable
W - Parameter is Writeable
N - Parameter is Non-Volatile
S - Parameter is Static as defined by the Fieldbus Specification.

N/A - Not ApplicableXDTB_TECH - Technician Transducer Block ­Contains diagnostic and uncommon setup parameters.

XDTB_MD - MD Transducer Block - Contains the PRO diagnostic •
parameters.

R - Paramater is Readable•

W - Parameter is Writable•

N - Parameter is Non-Volatile•

S - Paramter is Static as defined by the Fieldbus Specification•

N/A - Not Applicable•

8 Maintenance and Repair

8.1 Driver Module Assembly

The driver module assembly moves the spool valve by means of a
differential pressure across its diaphragm. Air is routed to the driver
module from the regulator through a flexible hose. A barbed fitting
connects the flexible hose to the driver module assembly. Wires
from the driver module assembly connect the hall effect sensor and
the piezo valve modulator to the main PCB assembly.

Driver Module Assembly Replacement

To replace the driver module assembly, refer to Figures 12-16 and 22
and proceed as outlined below. The following tools are required:

• Flatplateorbarabout

• Phillipsscrewdriver

• ”nutdriver

WARNING: Observe precautions for handling electrostatically

0

sensitive devices.

1

⁄8” thick

35

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Logix 3400MD Digital Positioner FCD LGENIM3404-00 – 9/09

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Figure 12: Driver Module Assembly

Figure 13: Spool Valve Cover Assembly

Figure 14: Spool and Block

WARNING: Spool (extending from the driver module

0

assembly) is easily damaged. Use extreme caution when
handling spool and spool valve block. Do not handle
the spool by the machined portions of spool. The toler­ances between the block and spool are extremely tight.
Contamination in the block or on the spool may cause the
spool to hang.

1. Make sure the valve is bypassed or in a safe condition.

2. Disconnect the power and air supply to the unit.

3. Remove the driver module cover (Figure 15), using a flat bar or
plate in the slot to turn the cover.

4. Remove the spool valve cover by removing the screw and sliding
the cover assembly backwards until the tab is clear of the slot
(Figure 13). The sheet metal cap, hydrophobic filter, and O-ring
should be removed with the spool valve cover. It is not necessary to
take these parts out of the spool valve cover.

5. Being careful not to lose the nylon washer, remove the Phillips­head screw that attaches the driver module to the main housing
(Figure 14).

Figure 15: Driver Module Barbed Fitting

6. Remove the spool valve block by removing the two Phillips-head
screws and carefully sliding the block off the spool (Figure 14).

7. Carefully remove the spool by sliding the end of the spool out of the
connection clip. Excessive force may bend spool.

8. Remove the main cover.

9. Remove the plastic board cover by removing the three retaining
screws (see Figure 16).

10. Disconnect the flexible tubing from the barbed fitting at the driver
module assembly (see Figure 15).

11. Use the ¼” nutdriver to remove the barbed fitting from the driver
module assembly.

12. Unplug the two wiring connections that link the driver module
assembly to the main PCB assembly.

36

Figure 16: Main PCB Assembly

Plastic Board Cover

Main PCB Retaining Screw

Regulator

Pressure Sensor Board

Main PCB Assembly

Fieldbus PCB

Plastic Cover
Retaining Screws

Logix 3400MD Digital Positioner FCD LGENIM3404-00 – 9/09

13. Feed the two wires on the driver module back into the driver
module compartment so that they stick out the driver module
opening (see Figure 12). This will allow the driver module to thread
out without tangling or cutting the wires.

14. Grasp the base of the driver module and turn it counterclockwise to
remove. After it is threaded out, carefully retract the driver module
from the housing.

15. Remove the barbed fitting from the side of the new driver module
using the ¼” nutdriver.

16. Verify that the O-ring is in place on the top of the new driver
module. Lay the wires back along the side of the driver module as
shown in Figure 12 and hold the wires in position by hand.

17. Gently insert the driver module into the driver module compart­ment in the housing. Turn the driver module clockwise to thread
it into the housing. Continue rotating the driver module until it
bottoms out.

18. Once the driver module has bottomed out so that the threads are
fully engaged, rotate the driver module counter clockwise until the

flat on the driver module and the flat on the housing are aligned.
This will align the screw hole for the next step.

19. Verify that the nylon gasket is in the counter bore in the driver
module retaining screw hole as shown in Figure 14.

20. Insert a driver-to-housing screw into the driver housing through
the counterbored hole in positioner main housing. Tighten with a
Phillips screwdriver.

21. Reach through the main compartment into the driver module
compartment of the positioner and install the barbed fitting on the
side of the driver module using the ¼” nutdriver.

NOTE: Do not mix the barbed fitting with those from older Logix
positioners. Older models contain orifices that will not work in the
Logix 3400MD model. Orifices are brass-colored, barbed fittings
are silver-colored.

22. Reconnect the flexible tube coming from the regulator to the barbed
fitting.

23. Feed the driver module wires into the main chamber of the housing,
and connect them to the main PCB Assembly.

37

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24. Verify that the three O-rings are in the counterbores on the
machined platform where the spool valve block is to be placed
(Figure 22).

25. Carefully slide the spool into the connecting clip on the top of the
driver module assembly.

26. Carefully slide the block over the spool, using the machined surface
of the housing base as a register (Figure 14). Slide the block toward
the driver module until the two retaining holes line up with the
threaded holes in the base.

27. Install two spool-valve screws and tighten securely with a Phillips
screwdriver (see Figure 14).

28. Slide the spool valve cover assembly over the spool valve until the
tang engages into the housing slot. Install spool valve cover screw
and tighten securely (see Figure 13).

29. Install the plastic board cover. Insert the three retaining screw
through the plastic cover into the threaded boss and tighten evenly,
using a Phillips screwdriver. Do not overtighten (see Figure 16).

30. Reconnect power and air supply to the positioner and perform a
stroke calibration.

31. Reinstall all covers.

7. Remove the four screws from the regulator base. Verify that as
regulator is removed, the O-ring and filter remain in the counter­bore.

8. Remove tubing and barbed fitting from the regulator base.

9. Install barbed fitting and tubing to the new regulator.

10. Verify O-ring and filter are in the counterbore. Install new regulator
using 8-32 x ½” screws.

NOTE: Do not mix the regulator with those from older Logix
positioners. Older models contain regulators with different settings
that will not work in the Logix 3400MD model. The regulator
pressure setting is printed on the top of the regulator. The Logix
3400MD regulator is set to 17.4 psig.

11. Reinstall the five wire connections.

12. Install the main PCB into the housing. Insert the retaining screw
through the board into the threaded boss and tighten evenly, using
a Phillips screwdriver. Do not overtighten.

13. Install the plastic board cover. Insert the three retaining screws
through the plastic cover into the threaded boss and tighten evenly,
using a Phillips screwdriver. Do not overtighten (see Figure 16).

14. Reinstall all covers.

8.2 Regulator

The regulator reduces the pressure of the incoming supply air to a level
that the driver module can use.

Replacing Regulator

To replace the regulator, refer to Figures 12 and 16 and proceed as
outlined below. The following tools are required:

• Phillipsscrewdriver

• ”nutdriver

WARNING: Observe precautions for handling electrostatically

0

sensitive devices.

1. Make sure valve is bypassed or in a safe condition.

2. Disconnect the power and air supply to the unit.

3. Remove the main cover.

4. Remove the plastic board cover by removing the three retaining
screws (see Figure 16).

5. Remove the retaining screw from the main PCB assembly.

6. Remove the five wire connections from the main PCB assembly and
lift the main PCB out of the housing.

8.3 Checking or Setting Internal
Regulator Pressure

To check or set the internal regulator pressure, refer to Figure 17 and
proceed as outlined below. The tools and equipment used in the next
procedure are from indicated vendors. The following tools are required:

• Calibratedpressuregauge(0to30psi)

1

•

⁄16” flexible tubing

• BarbedTee(ClippardMinimaticpartnumberT22-2orequivalent)

3

•

⁄32” Allen wrench

3

•

⁄8” open-end wrench

WARNING: Observe precautions for handling electrostatically

0

sensitive devices.

Figure 17: Driver Module Regulator Pressure Check

38

1. Make sure the valve is bypassed or in a safe condition.

2. Remove the main cover.

3. Remove the plastic board cover by removing the three retaining
screws.

4. Remove the

1

⁄16” flexible tubing from the barbed fitting on the side

of the driver module.

5. Obtain a barbed tee and two pieces of

1

⁄16” flexible tubing, a few

inches in length each.

Logix 3400MD Digital Positioner FCD LGENIM3404-00 – 9/09

3. Remove the spool valve cover by removing the screw and sliding
the cover assembly backwards until the tab is clear of the slot. It is
not necessary to remove the sheet metal cap, hydrophobic filter, or
O-ring from this assembly (Figure 18).

WARNING: The spool (extending from the driver module

0

assembly) is easily damaged. Use extreme caution when
handling spool and spool valve block. Do not handle
the spool by the machined portions of spool. The toler­ances between the block and spool are extremely tight.
Contamination in the block or on the spool may cause the
spool to hang.

6. Position the barbed tee between the internal regulator and the
driver module by connecting the

1

⁄16” flexible tubing, found in the
positioner, to one side of the barbed tee. Using one of the new
flexible tubing pieces, connect the barbed tee to the barbed fitting
on the side of the driver module. Connect the remaining port on the
barbed tee to a 0 to 30 psi pressure gauge.

7. Reconnect the air supply to the positioner and read the internal
regulator pressure on the 0 to 30 psig gauge. The internal pressure
should be set to 17.4 ±0.2 psig. If adjustment is needed, loosen the
set screw retaining nut on the top of the regulator using the

3

⁄8”
open-end wrench. Then adjust the regulator pressure by turning the
set screw on the top of the regulator with the

3

⁄32” Allen wrench.

8. Once the regulator pressure is set, tighten the set screw retaining
nut on the top of the regulator, remove the air supply to the
positioner, remove the barbed tee, and reconnect the flexible tubing
from the regulator to the barbed fitting on the side of the driver
module.

9. Install the plastic board cover. Insert the three retaining screws
through the plastic cover into the threaded boss and tighten evenly,
using a Phillips screwdriver. Do not overtighten (see Figure 16).

10. Reinstall all covers.

4. Remove the spool valve block by removing the two Phillips-head
screws and carefully sliding the block off the spool (Figure 14).

5. Carefully remove spool by sliding end of spool out of connecting
clip. Excessive force may bend the spool.

6. Verify that the three O-rings are in the counterbores on the
machined platform where the new spool valve block is to be placed
(Figure 22).

7. Carefully slide the spool into the connecting clip of the driver
module assembly.

8. Carefully slide the block over the spool, using the machined surface
of the housing base as a register (Figure 14). Slide the block toward
the driver module until the two retaining holes line up with the
threaded holes in the base.

9. Install two spool valve screws and tighten securely with a Phillips
screwdriver (see Figure 14).

10. Slide the spool valve cover assembly over the spool valve until the
tang engages into the housing slot. Install the spool valve cover
screw and tighten securely (see Figure 13).

11. Reconnect power and air supply to the positioner and perform a
stroke calibration.

8.4 Spool Valve

The spool valve routes the supply air to one side of the actuator while
venting the opposite side (see Figure 1). The position of the spool valve
is controlled by the driver module.

Replacing the Spool Valve

To replace the spool valve, refer to Figures 12, 14 and 21 and proceed
as outlined below. The following tools are required:

• Phillipsscrewdriver

1. Make sure the valve is bypassed or in a safe condition.

2. Disconnect the power and air supply to the unit.

8.5 Spool Valve Cover

The spool valve cover incorporates a hydrophobic filter element in a
two-piece cover. This protects the spool valve chamber from dirt and
moisture and provides a low back pressure vent for exhaust air from
the spool valve.

Replacing Filter in Spool Valve Cover

To replace the filter in the spool valve cover, refer to Figures 13 and 18
and proceed as outlined below. The following tools are required:

• Phillipsscrewdriver

1. Remove the spool cover by removing the screw and sliding the
cover assembly backwards until the tab is clear of the slot. The

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Logix 3400MD Digital Positioner FCD LGENIM3404-00 – 9/09

sheet metal cover may be removed and cleaned with a brush or by
blowing out with compressed air (Figure 13).

2. Remove the O-ring from around the hydrophobic filter element and
set aside (Figure 18).

3. Remove the molded filter element by pulling it straight out of the
chamber cover vent piece.

4. Install O-ring into base of chamber cover vent piece as shown in
Figure 18.

5. Place new molded filter element into the chamber cover vent piece.
This filter element provides part of the track to secure the O-ring
installed in the last step.

6. Place spool valve shroud onto spool valve cover.

7. Place the spool valve cover assembly in place by setting it on the
ramp and sliding it until the tab seats in the slot (Figures 13 and 18)
and secure with a 8-32 screw.

40

Figure 18: Spool Valve Cover Assembly

8.6 Stem Position Sensor

The position feedback assembly transmits valve positions information
to the processor. This is accomplished by means of a rotary position
sensor that connects to the valve stem through a feedback linkage. To
provide for accurate tracking of the pin in the slot, the follower arm is
biased against one side of the slot with a rotary spring. This spring also

Logix 3400MD Digital Positioner FCD LGENIM3404-00 – 9/09

automatically moves the position feedback assembly to its limit in the
unlikely event of failure of any component in the linkage.

Stem Position Sensor Replacement

To replace the stem position sensor, refer to Figure 16, 19 and 22 and
proceed as outlined below. The following tools are required:

• Phillipsscrewdriver

WARNING: Observe precautions for handling electrostatically

0

sensitive devices.

1. Make sure the valve is bypassed or in a safe condition.

2. Disconnect the power and air supply to the unit.

3. Remove the main cover.

4. Remove the plastic board cover by removing the three retaining
screws (see Figure 16).

5. Disconnect the position sensor wires from the main PCB assembly.

6. Remove the two rotary position sensor-retaining screws and lift the
sensor out of the housing.

7. Turn the new position sensor shaft until the dot on the side of the
shaft is aligned with the wires on the side of the position sensor
(Figure 19).

8. Insert the position sensor into the shaft with the wires pointing
toward the main PCB assembly. Turn the position sensor clockwise
until bolting slots align with the housing screw holes and the wires
on the sensor protrude over the main PCB assembly.

NOTE: Do not mix the position sensor with those from older Logix
positioners. Older models contain sensors with different ranges that
will not work in the Logix 3400MD model. The wires on the Logix
3400MD position sensor are red, white and black.

9. Carefully center the position sensor on the shaft bore, insert and
tighten the screws. Do not overtighten.

10. Route the wires along the side of the position sensor and reconnect
to the main PCB assembly.

11. Install the plastic board cover. Insert the three retaining screws
through the plastic cover into the threaded boss and tighten evenly,
using a Phillips screwdriver. Do not overtighten (see Figure 16).

12. Reinstall all covers.

13. Reconnect power and air supply to the positioner and perform a
stroke calibration.

8.7 Main PCB Assembly

The main printed circuit board (PCB) assembly contains the circuit
boards and processors that perform control functions of the positioner.
The main PCB is to be replaced as a unit. None of the components on
the main PCB are serviceable. It consists of a controller board and a
Fieldbus communication board.

Replacing Main PCB Assembly

To replace the main PCB assembly, refer to Figure 12 and 16 and
proceed as outlined below. The following tools are required:

• Phillipsscrewdriver

WARNING: Observe precautions for handling electrostatically

0

sensitive devices.

1. Make sure the valve is bypassed or in a safe condition.

2. Disconnect the power and air supply to the unit.

3. Remove the main cover.

4. Remove the plastic board cover by removing the three retaining
screws (see Figure 16).

5. Remove the retaining screw from the main PCB assembly.

6. Remove the five wire connections from the main PCB assembly and
lift the main PCB out of the housing (see Figure 16).

7. Reinstall the five wire connections (see Figure 12) on the new main
PCB.

8. Install the new main PCB into the housing. Insert the retaining
screw through the board into the threaded boss and tighten, using
a Phillips screwdriver. Do not over tighten.

9. Install the plastic board cover. Insert the three retaining screws
through the plastic cover into the threaded boss and tighten evenly,
using a Phillips screwdriver. Do not overtighten (see Figure 16).

10. Reinstall all covers.

11. Reconnect power and air supply to the positioner and reconfigure
the positioner being sure to perform a stroke calibration.

8.8 Pressure Sensor Board

On advanced model Logix 3400MD positioners, a pressure sensor
board is installed in the positioner. The pressure sensor board contains
two pressure sensors that measure the pressure on output ports 1
and 2. The main PCB electronics automatically senses the presence of
the pressure sensor board. If present, the actuator pressure sensors
are used in the positioner control algorithm to enhance valve stability.
For optimal performance, the actuator pressure sensors need to be

41

flowserve.com

Logix 3400MD Digital Positioner FCD LGENIM3404-00 – 9/09

42

calibrated. The actuator pressure sensor calibration is performed using
a 375 Handheld Communicator or Host configuration software.

In the standard model, the pressure sensor board is replaced by a
plate that plugs the actuator pressure sensor ports. This plate can be
replaced by a pressure sensor board to field-upgrade a standard model
to an advanced model.

Removing the Pressure Sensor Board (Advanced Model)

To replace the pressure sensor board, refer to Figures 12, 16 and 21
and proceed as outlined below. The following tools are required:

• Phillipsscrewdriver

WARNING: Observe precautions for handling electrostatically

0

sensitive devices.

1. Make sure the valve is bypassed or in a safe condition.

2. Disconnect the power and air supply to the unit.

3. Remove the main cover.

4. Remove the plastic board cover by removing the three retaining
screws (see Figure 16).

5. Disconnect the ribbon cable on the pressure sensor board from the
PCB assembly (see Figure 12). Lifting the main board may make
this easier.

6. Remove the two screws holding the pressure sensor board to the
housing. Lift the metal stiffener plate off the pressure sensor board
and set aside for future use.

7. Remove the pressure sensor board.

Removing the Pressure Sensor Plug Plate (Standard Model)

To upgrade a standard model to an advanced model, the pressure
sensor plug plate must be removed and replaced by a pressure sensor
board. The main PCB electronics automatically senses the presence of
the pressure sensor board. If present, the actuator pressure sensors
are used in the positioner control algorithm to enhance valve stability.
For optimal performance, the actuator pressure sensors need to be
calibrated. The actuator pressure sensor calibration is performed using
a Handheld Communicator or host configuration software. To upgrade
a standard model to an advanced model, refer to Figures 12, 16 and 21
and proceed as outlined below. The following tools are required:

• Phillipsscrewdriver

1. Make sure the valve is bypassed or in a safe condition.

2. Disconnect the power and air supply to the unit.

3. Remove the main cover.

4. Remove the plastic board cover by removing the three retaining
screws (see Figure 16).

5. Remove the two screws holding the pressure sensor plug plate to
the housing. Lift the metal stiffener plate off the pressure sensor
plug plate and set aside for future use.

6. Remove the pressure sensor plug plate and discard.

Installing the Pressure Sensor Board (Advanced Model)

The pressure sensor board is installed on the advanced model only. To
install the pressure sensor board, refer to Figures 12, 16 and 22 and
proceed as outlined below. The following tools are required:

• Phillipsscrewdriver

• Torquewrench

WARNING: Observe precautions for handling electrostatic

0

sensitive devices.

1. Verify that the two pressure sensor O-rings (item 15) are in place in
the housing.

2. Set the pressure sensor board assembly in place so that the O-rings
make contact with the faces of the pressure sensors.

3. Place the metal stiffener plate (item 12) on top of the pressure
sensor board over the pressure sensors and align the two holes in
the pressure sensor plate with the threaded bosses in the housing.

4. Insert two screws through the stiffener plate and pressure sensor
board into the threaded holes in the housing and tighten evenly, to 8
in-lb.

5. Connect the ribbon cable on the pressure sensor board to the main
PCB assembly.

6. Install the plastic board cover. Insert the three retaining screws
through the plastic cover into the threaded boss and tighten evenly,
using a Phillips screwdriver. Do not overtighten.

7. Reinstall all covers.

8. Reconnect power and air supply to the positioner. Use the Host
software or a handheld communicator to perform a pressure
sensor calibration.

8.9 User Interface Board

The user interface board provides a connection point inside the
explosion-proof housing for all hookups to the positioner.

Replacing the User Interface Board

To replace the user interface board, refer to Figures 6, 12, 16 and 22
and proceed as outlined below. The following tools are required:

• Phillipsscrewdriver

Logix 3400MD Digital Positioner FCD LGENIM3404-00 – 9/09

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sensitive devices.

1. Make sure the valve is bypassed or in a safe condition.

2. Disconnect the power and air supply to the unit.

3. Remove the main cover.

4. Remove the plastic board cover by removing the three retaining
screws (see Figure 16).

5. Remove the retaining screw from the main PCB assembly and lift
the main PCB out of the housing (see Figure 16). It is not necessary
to disconnect all of the wires, only the UI plug.

6. Remove the user interface cover.

7. Disconnect the field wiring from the user interface board terminals
and remove the three screws that hold the user interface board in
the housing (see Figure 6).

8. Remove the user interface board, carefully pulling the wiring
through the bore.

9. Verify that the O-ring is in place in the counterbore in the positioner
housing, or on the plug on the back of the UI tray.

main chamber (from the modulator and regulator) and spool chamber
(from the actuator). Back pressure limitations are described below.

Two chambers must be vented on the Logix 3400MD positioners: the
main housing chamber and the spool valve chamber (Figures 20 and

21). The main chamber vent is located on the backside of the posi­tioner (see Figure 20). Vented-design Logix 3400MD positioners are
supplied from the factory with a fitting installed in the main chamber
vent. Connect the necessary tubing/piping to this fitting to route the
exhausted natural gas to a safe environment.

The maximum allowable back pressure from the collection device on
the main housing vent is 2.0 psig (0.14 barg). Vent flow rate is 0.5 std

3

ft

/min (1.4 std liter/min).

WARNING: The back pressure in the main housing must never

0

rise above 2.0 psig (0.14 barg).

Figure 20: Main Housing Vent

10. Feed the wires on the back of the new user interface board through
the passageway into the main chamber of the housing.

11. Set the user interface board in place and secure with three screws
(see Figure 6).

12. Reconnect the field wiring to the user interface board terminals.

13. Install the main PCB into the housing. Insert the retaining screw
through the board into the threaded boss and tighten evenly, using
a Phillips screwdriver. Do not overtighten.

14. Install the plastic board cover. Insert the three retaining screws
through the plastic cover into the threaded boss and tighten evenly,
using a Phillips screwdriver. Do not overtighten (see Figure 16).

15. Reinstall the UI wire connection (see Figure 12).

16. Reinstall all covers.

9 Optional Vented Design

NOTE: See Figures 19 and 20

A standard Logix 3400MD positioner is vented directly to the atmo­sphere. When supply air is substituted with sweet natural gas, piping
must be used to route the exhausted natural gas to a safe environment.
This piping system may cause some positioner back pressure in the

Figure 21: Spool Cover Vent

The spool valve chamber (see Figure 21) must also be vented through
the spool valve cover. Vented-design Logix 3400MD positioners are
supplied from the factory with a fitting installed in the spool valve cover
(item SKU 179477). Connect the necessary tubing/piping to this fitting
to route the exhausted natural gas to a safe environment. The maximum
allowable back pressure in the spool valve chamber is 8 psig (0.55
barg). Pressures greater than 8 psig will cause vented gas to leak past
the spool cover O-ring to the atmosphere and will result in overshoot of
the positioner.

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43

Figure 22: Exploded Drawing

2

4

3

5

6

9

8

16

17

18

19

20

21

23

22

24

25

26

27

28

29

30

34

35

31

32

33

56

55

54

53

52

51

49

50

47

48

37

36

38

39

40

41

46

45

44

43

42

11

12

13

14

15

7

1

10

Logix 3400MD Digital Positioner FCD LGENIM3404-00 – 9/09

10 Parts List

Table XI: Parts

Item No. Part

1 Housing Logix 3000MD Positioner

2 Main Housing Cover

3 O-ring, Main Housing Cover

4 Screw, Anti-rotation

5 Plastic Main PCB Cover

6 Screw, Main PCB Cover Short (2)

7 Screw, Main PCB Cover Long

8 Main PCB Assembly

9 Screw, Main PCB Assembly Retaining

11 Screw, Pressure Sensor Board (2)

44

12 Pressure Sensor Board Stiffener

Item No. Part

13 Pressure Sensor Board (Advanced Only)

14 Pressure Sensor Plug Plate (Standard Only)

15 O-ring, Pressure Sensor to Housing (2)

16 Pressure Regulator, 5 to 30 psig (Includes 2 O-rings)

17 Screw, Regulator Plate to Housing (4)

18 Hex Barbed Fitting with Captive O-ring

19 Internal Filter

20 O-ring, Interface Plate to Housing Seal

21 Customer Interface Cover

22 O-ring, Customer Interface Cover

Continued on Page 45

Table XI: Parts (continued)

Item No. Part

23 Screw, Anti-rotation

24 Screw, User Interface Board (3)

25 User Interface Board Potted Assembly

26 O-ring, User Interface Board

27 Grounding Screw (2)

28 Threaded Plug

29 Main Vent Cover

30 Screw, Main Vent Cover

31 Driver Module Cover

32 O-ring, Driver Module Cover

33 Driver Module Assembly

34 Hex Barbed Fitting with Captive O-ring

35 Flexible Tubing

36 Screw, Driver to Housing

37 Nylon Washer

38 Spool Valve

39 Spool Valve Block

Logix 3400MD Digital Positioner FCD LGENIM3404-00 – 9/09

Item No. Part

40 Screw, Spool Valve to Housing (2)

41 O-ring, Spool Valve (3)

42 Screw, Spool Valve Cover

43 Spool Valve Shroud

44 Spool Valve Cover

45 Hydrophobic Filter, Spool Valve Chamber

46 O-ring, Spool Valve Cover

47 Pressure Gauge, 0-160 psig (2)

48 Air Screen (3)

49 Screw, Position Feedback Potentiometer to Housing (2)

50 Metal Washer (2)

51 Position Feedback Potentiometer

52 Feedback Shaft

53 Screw, Spring to Feedback Shaft

54 O-ring, Feedback Shaft

55 Torsion Spring

56 E-ring

11 Logix 3400MD Spare Parts Kits (See Figure 22 for item numbers.)

Table XII: Spare Parts Kits

Item

Description Quantity

No.

Kit 2: Driver Module Assembly -40° to 80°C Kit, P/N 199786.999.000

16 Pressure Regulator 1

17 Screw, Regulator to Housing 4

33 Driver Module Assembly 1

34 Hex Barbed Fitting w/ Captive O-ring 1

36 Screw, Driver to Housing 1

37 Nylon Washer 1

Kit 3: Spool Assembly Valve Kit, P/N 199787.999.000

38 Spool 1

39 Spool Valve Block 1

40 Screw, Spool Valve to Housing 2

41 O-ring, Spool Valve 3

Kit 4: Pressure Regulator, P/N 215814.999.000

16 Pressure Regulator with Captive O-rings 1

17 Screw, Regulator to Housing 4

Kit 5: Feedback Shaft Kit, P/N 199788.999.000 - ATEX & IECEX ONLY

52 Feedback Shaft 1

53 Screw, Spring to Feedback Shaft 1

54 O-ring, Feedback Shaft 1

Item

Description Quantity

No.

55 Torsion Spring 1

56 E-ring 1

Kit 6: Feedback Shaft Kit (NAMUR), P/N 218814.999.000 - ATEX & IECEX
ONLY

52 Feedback Shaft 1

53 Screw, Spring to Feedback Shaft 1

54 O-ring, Feedback Shaft 1

55 Torsion Spring 1

56 E-ring 1

Continued on Page 46

45

flowserve.com

Table XII: Spare Parts Kits (continued)

Logix 3400MD Digital Positioner FCD LGENIM3404-00 – 9/09

Item

Description Quantity

No.

Kit 7: Soft Goods Kit, P/N 199789.999.000

3 O-ring, Main Housing Cover 1

15 O-ring, Pressure Sensor to Housing 2

20 O-ring, Regulator to Housing 1

22 O-ring, User Interface Cover 1

26 O-ring, User Interface Board 1

35 Flexible Tube 1

37 Nylon Washer 1

41 O-ring, Spool Valve to Housing 3

45 Hydrophobic Filter, Spool Valve Chamber 1

46 O-ring, Spool Valve Cover 1

54 O-ring, Feedback Shaft 1

Kit 8: Standard Model Pressure Sensor Plug Plate Kit, P/N 199790.999.000

11 Screw, Pressure Sensor Board 2

14 Pressure Sensor Plug Plate 1

15 O-ring, Pressure Sensor to Housing 2

Item

Description Quantity

No.

Kit 9: Advanced Model Pressure Sensor Board Kit, P/N 199791.999.000

11 Screw, Pressure Sensor Board 2

13 Pressure Sensor Board 1

15 O-ring, Pressure Sensor to Housing 2

Kit 10: Main PCB Assembly Kit, P/N 230226.999.000

6 Screw, Main PCB Cover Short 2

7 Screw, Main PCB Cover Long 1

8 Main PCB 1

9 Screw, Main PCB Retaining Screw 1

Kit 11: User Interface Board Kit, P/N 230227.999.000

24 Screw, User Interface to Housing 3

25 User Interface Board 1

26 O-ring, User Interface Board 1

Kit 13: Position Feedback Potentiometer Kit, P/N 199794.999.000

49 Screw, Feedback Potentiometer to Housing 2

50 Metal Washer 2

51 Position Feedback Potentiometer 1

46

12 Logix 3400MD Mounting Kits

12.1 Valtek Mounting Kits

Table XIII: Valtek Linear Mounting Kits

2

Spud

2.00 164432 164433 164434 164433

2.62 164435 164436 **164437** 164436

2.88 164437 164438

3.38 164439 164440

4.75 164439 164440

* A 50 square", 2.00 spud with live loading requires kit number. ** Live-loading is not available on a 100 in

Standard Handwheel Standard Handwheel Standard Handwheel

25 in

50 in2* 100-200 in

2

, 2.62 spud.

Table XIV: Valtork Rotary Mounting Kits*

2

Spud

0.44 135429 135432 135430 135431

0.63 135429 135437 135430 135433 135431

0.75 135429 135438 135430 137212 135431

0.88 135429 135439 135430 137213 135431 135434

1.12 135429 135430 137214 135431 137215

1.50 135429 135430 135431 137216

1.75 135429 135430 135431 137217

* Standard: All rotary valves with standard accessories (end of shaft mount). Optional: All rotary valves with handwheels or volume tanks (linkage design).

Standard Optional Standard Optional Standard Optional

25 in

50 in2* 100-200 in

2

2

12.2 Logix O.E.M. Mounting Kits

Table XV: Logix O.E.M. Mounting Kits

Brand Model Size Mounting Kit

30 213905

34

40

50

657 & 667

60

Fisher

1250

1052 33 171549 Rotary

657-8 40 173798

Neles

Slid-Std 173567

Foxboro

VST-VA3R 17-in. dia. 173798

VSL-VA1D 12-in. dia. 173798

Honeywell

37

38

71 Domotor

Masoneilan (Linear Actuators)

88

47 B 173361

48 B 173361

“D”

Domotor

71-2057AB-D 176179

71-40413BD 176251

70 171518 4" stroke

80 171519

225

675

RC 171512

RD 178258

Linear 178258

9

11

13 171720

18 173382

24 173896

11 173235

13 173234

15 186070

18 173382*

24 173896

25 173325

50 173335

100 173336

6 171722

16 173827

200 175141

0.5" – 1.5"

141410

171516

171517 2" stroke

171516

171517 2" stroke

stroke

0.5" – 1.5"
stroke

0.5" – 1.5"
stroke

173371450

171721

Logix 3400MD Digital Positioner FCD LGENIM3404-00 – 9/09

Brand Model Size Mounting Kit

33 B 173298

4

35

Masoneilan

(Rotary Actuators)

Valtek Trooper 166636

Automax

Vangard 37/64 175128

Air-Torque AT Series AT0 – AT6

Automax

Bettis

EL-O-Matic

Hytork XL Series XL45 – XL4580

Unitorq M Series M20 – M2958

Worcester 39 Series 2539 - 4239

*Adjustable mounting kit 173798 may be needed if handwheels are used.

70 10 173298

R314 141180 HD

SNA115 NK313A

SNA Series SNA3 – SNA2000

N Series N250.300

R Series R2 – R5

RPC Series RP – TPC11000

G Series

E Series E25 – E350

P Series P35 – P4000

7

G2009-M11

– G3020-M11

1732986

0.75" – 1.50"
Std

Consult factory

12.3 NAMUR Accessory Mounting Kit
Part Numbers

Use prefix “NK” and choose bracket and bolt options from the following
table.

Table XVI: NAMUR Accessory Mounting Kit Part Numbers

Bracket Option Description

28 20 mm pinion x 80 mm bolt spacing

28 38 mm pinion x 80 mm bolt spacing

313 30 mm pinion x 80 mm bolt spacing

513 50 mm pinion x 130 mm bolt spacing

Bolt Option Description

A 10-24 UNC bolting

B 10-32 UNF bolting

L M5-.8 metric bolting

Example: NK313A, NAMUR Accessory Mounting Kit with 30 mm pinion x
80 mm bolt spacing and 10-24 UNC bolting.

flowserve.com

47

13 Frequently Asked Questions

Q: I set the Final Value Cutoff Low at 5 percent. How will the
positioner operate?

A: Assume that the present command signal is at 50 percent. If the
command signal is decreased, the positioner will follow the command
until it reaches 5 percent. At 5 percent, the spool will be driven fully
open or fully closed, depending on the air action of the valve, in order
to provide full actuator saturation and tight shutoff. The positioner
will maintain full saturation below 5 percent command signal. As the
command increases, the positioner will remain saturated until the
command reaches 6 percent (there is a 1 percent hysteresis value
added by the positioner). At this point, the stem position will follow the
command signal. While in Final Value Cutoff, the Logix 3400MD LEDs
will blink GGGY.

Q: I have Final Value Cutoff set to 3 percent but the valve will not go
below 10 percent.

A: Is a lower soft stop enabled? The lower soft stop must be less than
or equal to zero percent in order for the Final Value Cutoff to become
active. If a positive lower soft stop is written, this stop will take priority
over the Final Value Cutoff feature. When the lower soft stop is reached,
the positioner will blink a GYGYs code.

Logix 3400MD Digital Positioner FCD LGENIM3404-00 – 9/09

Q: Will soft stops prevent the valve from going to its fail position?

A: No.

Q: What is the difference between a model with Standard diagnostics
and a model with Advanced diagnostics?

A: The model with Advanced diagnostics adds top and bottom actuator
pressure sensors. This allows for more diagnostic calculations such as
loss of pressure, friction, advanced signatures, and troubleshooting.
The pressure sensors, if present, are also used in the positioner control
algorithm to enhance valve stability.

Q: Can I upgrade from a Standard to an Advanced?

A: Yes. Referencing the IOM, an advanced pressure sensor board
assembly can be purchased. Simply replace the pressure sensor plug
plate with the advanced pressure sensor board. Perform an actuator
pressure calibration.

48

14 How to Order

Table XVII: How to Order

Logix 3400MD Digital Positioner FCD LGENIM3404-00 – 9/09

Example

Selection Code

3

Protocol Fo u n d a t i o n Fieldbus* 4

Standard Diagnostics* 0

Diagnostics

Housing & Brand

Design Version MD

Certifications

Shaft/Feedback Shaft

Conduit Connections/Threaded Connections

Action

Temperature Low -40°C to 85°C (-40°F to 185°F)* 40

Gauges

Special Options

*Indicates Standard Product Configuration

**Contact factory before specifying this option

Advanced Diagnostics 1
Pro Diagnostics 2
Aluminum, White Paint (Valtek)* 0
Stainless Steel, No Paint (Valtek) 1
Aluminum, Black Paint (Automax) 2
Aluminum, Food Grade White Paint (Automax) 3
Aluminum, Accord (Black Paint) 4
Aluminum, Accord (Food-Grade White Paint) 5
Aluminum - Off Shore Paint 6

Explosionproof Class I, Div 1, Groups B, C, D,
DIP Class II, III, Division 1 E, F, G

Intrinsically Safe Class I, Div 1, Groups A,B,C,D

Nonincendive Class I, II, III, Division 2 A, B, C, D, E, F, G
INMETRO BR-EX ia IIC T4/T5; BR-Ex d IIB+H2 T5 (South America) 06
Flame Proof EEx d IIB+H2; ATEX II 2 G 07
General Purpose 14
Ex ia IIC, ATEX II 1 G 15
Ex nA nL IIC, ATEX II 3 G 20
IECEx Ex ia IIC 21
DD 316 SSl Shaft (Valtek Standard)* D6

NAMUR 316 SSl (VDI/VDE 3845) N6

½" NPT E
M20 M
4-way (Double-Acting) 04
3-way (Single-Acting) 03
4-way Vented (Double-Acting) 4V
3-way Vented (Single-Acting) 3V

Gauges (Valtek standard)* 0G
SS with SS internals, psi (bar/kPa) 0S
SS with SS internals, psi (kg/cm
SS with brass internals, psi (kg/cm
Stainless Steel 0S
No Gauges 0U
None* 00
Remote Mount Feedback (Only available with Certification Option 14) RM
Fail Option Feedback** SF

2

) KS

2

) KG

01

02

3
4

2

0

MD

1

D6

E

04

40

0G

00

49

flowserve.com

Logix 3400MD Digital Positioner FCD LGENIM3404-00 – 9/09

15 Troubleshooting

Table XVIII: Troubleshooting

Failure Probable Cause Corrective Action

Voltage of supply source is not high enough Verify that voltage source can supply at least 9 V

No LED is blinking

Erratic communications

Unit does not respond to Final
Value commands

Valve position reading is not what
is expected

Position is driven fully open or
closed and will not respond to
command

Sticking or hunting operation of
the positioner

* Final Value Cutoff

Current draw incorrect

Maximum cable length or cable impedance exceeded

Improper grounding Terminate and ground segment properly.

Interference with I.S. barrier Must use FF-compatible I.S. barrier

Host FB card not configured or connected correctly Check connections and configurations of card

Unit is in Auto mode Put in OOS mode

Error occurred during calibration

Positioner tubing backwards Re-tube the actuator

Stem position sensor mounting is off 180° Remount position sensor

Stroke not calibrated Perform RE-CAL

Tight shutoff is active Verify settings using PC or handheld software

Customer characterization or soft stops active Verify customer characterization and soft stops

Stroke not calibrated Check DIP switch settings and calibrate valve stroke

Inner-loop hall sensor not connected Verify hardware connections

Wrong air action entered in software

Actuator tubing backward Verify ATO/ATC actuator tubing

Driver module Electro-pneumatic converter malfunctioning Replace driver module

Control parameter inner-loop offset is too high/low Adjust inner-loop offset and see if proper control resumes

Contamination of the driver module

Control tuning parameters not correct Adjust gain settings using local gain switch

Packing friction high

Corroded or dirty spool valve Disassemble and clean spool valve

Verify current draw of device (23 mA) and that of other
devices on the loop aren’t pulling too much current

Check cable conduction size, length and capacitance. Refer
to Section 6.4, “Cable Requirements”

Check blink codes on positioner and correct
calibration error. Recalibrate

Check ATO (Air-to-open) and ATC
(Air-to-close) settings. Recalibrate

Check air supply for proper filtering and meeting ISA
specifications ISA-7.0.01. Check the spool valve for
contamination

Enable the stability DIP switch on the local interface and
recalibrate. If problem persists, enable pressure control with
handheld communicator or SoftTools and recalibrate

NOTE: Refer to blink codes for self diagnostics of other errors. See document #VLAIM0046. Refer to Logix 3400/1400 Reference Manual for Fieldbus
related troubleshooting.

50

Logix 3400MD Digital Positioner FCD LGENIM3404-00 – 9/09

51

flowserve.com

Flowserve Headquarters

5215 N. O’Connor Blvd.
Suite 2300
Irving, TX 75039
Phone: [phone]

FCD LGENIM3404-00 Printed in USA.

To find your local Flowserve representative:

For more information about Flowserve Corporation, visit
www.flowserve.com or call USA 1 800 225 6989

Flowserve Corporation
Flow Control

1350 N. Mt. Springs Parkway
Springville, UT 84663
USA
Phone: [phone]

Flowserve (Austria) GmbH

Control Valves - Villach Operation
Kasernengasse 6
9500 Villach
Austria
Phone: [phone]

Flowserve Australia Pty Ltd.

14 Dalmore Drive
Scoresby, Victoria 3179
Australia
Phone: [phone]

China

585, Hanwei Plaza
7 Guanghau Road
Beijing, China 100004
Phone: [phone]

Flowserve India Controls Pvt.
Ltd

Plot #4 1A, E.P.I.P., Whitefield
Bangalore Kamataka
India 560 066
Phone: [phone]

Flowserve Essen Gmbh

Manderscheidtstr. 19
45141 Essen
Germany
Phone: [phone]

Flowserve S.A.S.

7, Avenue de la Libération - BP 60
63307 Thiers Cedex
France
Phone: [phone]

Flowserve Pte Ltd.

12 Tuas Avenue 20
Singapore 638824
Singapore
Phone: [phone]

NAF AB

Gelbgjutaregatan 2
SE-581 87 Linköping
Sweden
Phone: [phone]

Kämmer Valves INC.

1300 Parkway View Drive
Pittsburgh, PA 15205
USA
Phone: [phone]

Flowserve Corporation has established industry leadership in the design and manufacture of its products. When properly selected, this Flowserve product is designed to perform its intended
function safely during its useful life. However, the purchaser or user of Flowserve products should be aware that Flowserve products might be used in numerous applications under a wide
variety of industrial service conditions. Although Flowserve can (and often does) provide general guidelines, it cannot provide specific data and warnings for all possible applications. The pur­chaser/user must therefore assume the ultimate responsibility for the proper sizing and selection, installation, operation, and maintenance of Flowserve products. The purchaser/user should
read and understand the Installation Operation Maintenance (IOM) instructions included with the product, and train its employees and contractors in the safe use of Flowserve products in
connection with the specific application.

While the information and specifications contained in this literature are believed to be accurate, they are supplied for informative purposes only and should not be considered certified or as
a guarantee of satisfactory results by reliance thereon. Nothing contained herein is to be construed as a warranty or guarantee, express or implied, regarding any matter with respect to this
product. Because Flowserve is continually improving and upgrading its product design, the specifications, dimensions and information contained herein are subject to change without notice.
Should any question arise concerning these provisions, the purchaser/user should contact Flowserve Corporation at any one of its worldwide operations or offices.

© 2009 Flowserve Corporation, Irving, Texas, USA. Flowserve is a registered trademark of Flowserve Corporation.

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