Flowserve 3400IQ User Manual

3400IQ Digital Positioner

FCD LGENIM3401-00 – 06/06

USER INSTRUCTIONS

Installation

Operation

Maintenance

Experience In Motion

Logix 3400IQ Digital Positioner FCD LGENIM3401-00 – 06/06

Contents

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

3.1 Unpacking 5

3.2 Storage 5

3.3 Pre-installation Inspection

4 Logix 3400

4.1 Specifications 10

4.2 Positioner Operation 1

4.3 Detailed Sequence of Positioner Operations 1

5 Mounting and Installation 1

5.1 Mounting to Valtek Linear Mark One Valves 1

5.2 Mounting to Standard Valtek Rotary Valves (See Figure 4) 1

5.3 Optional Valtek Rotary Mounting Procedure (See Figure 5) 1

5.4 NAMUR Mounting Option 1

5.5 Tubing Positioner to Actuator 1

6 Wiring and Grounding Guidelines (See Figure 6) 1

6.1 FF Command Input Wiring 1

6.2 Grounding Screw 1

6.3 Segment Compliance Voltage (See Figure 7) 2

6.4 Cable Requirements 2

6.5 Intrinsically Safe Barriers 2

6.6 DD Support 2

7 Startup 22

7.1 Logix 3400

7.2 Initial DIP Switch Settings 2

7.3 Description of Configuration DIP Switch Settings 2

7.4 Description of Cal DIP Switch Settings 2

7.5 RE-CAL Operation 2

7.6 Manual Jog Calibration Operation 2

7.7 Local Control of Valve Position 2

7.8 Factory Reset 2

7.9 Logix 3400

7.10 Version Number Checking 3

7.11 375 Handheld Communicator 3

7.12 Device Description (DD) Files 3

7.13 Calibration 31

2

IQ Positioner Overview 7

IQ Local Interface Operation 22

IQ Status Condition 27

7.13.1 CALIBRATE_FLAGS 31

7.13.2 Control and Tuning 3

4
5

7

1
2
4
4
5
7
8
8
9
9
9
0
1
1
1

2
3
6
6
7
7
7

0
1
1

2

Logix 3400IQ Digital Positioner FCD LGENIM3401-00 – 06/06

7.14 Alerts 35

7.14.1 FINAL_VALUE_CUTOFF 35

7.14.2 Effects of FINAL_VALUE_CUTOFF on Operation 3

7.14.3 Soft Limits 3

7.14.4 Travel Accumulator 3

7.14.5 Cycle Counter 3

7.14.6 Position Deviation 3

7.14.7 Advanced Features 3

7.14.8 Standard vs. Advanced Diagnostics 3

7.14.9 Temperature and Pressure Units 3

7.14.10 Stroke Length 3

7.15 Characterization Retention 3

7.15.1 Initiating a Valve Signature 3

7.15.2 System Preparation 3

7.15.3 Signature Procedure 3

7.16 Step Signature 3

7.16.1 Collection of Stored Signature 3

7.17 Glossary 39

7.18 Transducer Block Parameters 4

8 Maintenance and Repair 5

8.1 Driver Module Assembly 5

8.2 Regulator 54

8.3 Checking or Setting Internal Regulator Pressure 5

8.4 Spool Valve 5

8.5 Spool Valve Cover 5

8.6 Stem Position Sensor 5

8.7 Main PCB Assembly 6

8.8 Pressure Sensor Board 6

8.9 User Interface Board 6
9 Optional Vented Design 6
10 Parts List 6
11 Logix 3400
12 Logix 3400

12.1 Valtek Mounting Kits 7

12.2 Logix O.E.M. Mounting Kits 7

12.3 NAMUR Accessory Mounting Kit Part Numbers 7
13 Frequently Asked Questions 7
14 How to Order 7
15 Troubleshooting 76

IQ Spare Parts Kits (See Figure 22 for item numbers) 68
IQ Mounting Kits 70

5
5
5
6
6
6
6
6
7
8
8
8
8
9
9

1
0
0

5
7
8
9
0
1
3
4
7

0
1
3
4

3

5

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Logix 3400IQ Digital Positioner FCD LGENIM3401-00 – 06/06

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

b

will occur if proper precautions are not taken.

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

c

damage can occur if proper precautions are not taken.

CAUTION: Indicates that minor personal injury and/or property damage can occur if proper

a

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.

2 General Information

The following instructions are designed to assist in unpacking, installing and performing mainte­nance as required on Flowserve Valtek Logix
used for all the positioners herein; however, specific numbers indicate features specific to model
(i.e., Logix 3400 indicates that the positioner has F
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 and be hazardous to personnel
and equipment, and may void existing warranties.

4

WARNING: Standard industry safety practices must be adhered to when working on this

c

or any process control product. Specifically, personal protective and lifting devices must be
used as warranted.

®

3400IQ digital positioners. Series 3000 is the term

oundation Fieldbus protocol). See Logix 3400IQ

Logix 3400IQ Digital Positioner FCD LGENIM3401-00 – 06/06

3 Unpacking and Storage

3.1 Unpacking

1. While unpacking the Logix 3400IQ 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 lifting straps, be aware the

c

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.

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 3400IQ Digital Positioner FCD LGENIM3401-00 – 06/06

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.

Desiccant packet

6

Logix 3400IQ Digital Positioner FCD LGENIM3401-00 – 06/06

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

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 3400IQ Positioner Overview

The Logix 3400IQ digital positioner is a two-wire Foundation Fieldbus compliant digital valve
positioner. The positioner is configurable through the local user interface. The Logix 3400IQ
the FF protocol to allow two-way remote communications with the positioner. The Logix 3400IQ
positioner can control both double- and single-acting 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.

utilizes

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7

OO

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

Logix 3400IQ Digital Positioner FCD LGENIM3401-00 – 06/06

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

8

Figure 2: System Positioning Algorithm

Sensor

-

+

+

+

+

Summer

Integration

I

Offset

Loop

Inner

+

-

Gmult

Pmin

Pmax

Deviation

FOUNDATION

Fieldbus

Signal

Command In

(AO Block)

FOUNDATION

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 3400IQ Digital Positioner FCD LGENIM3401-00 – 06/06

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Logix 3400IQ Digital Positioner FCD LGENIM3401-00 – 06/06

4.1 Specifications

Table I: Electrical Specifications

Power Supply

IS Fisco compliant

Communications FF Protocol ITK 4.6x

Operating Current 23 mA

Maximum Voltage 36.0 VDC

Table II: Environmental Conditions

Operating Temperature Range Standard

Transport and Storage
Temperature Range

Operating Humidity 0 - 100% non-condensing

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

Two-wire, 9-32 VDC

FF compatible

-40° to 176°F

(-40° to 80°C)

-40° to 176°F (-40° to 80°C)

Table III: Physical Specifications

Housing Material Cast, powder-painted aluminum, stainless steel

Soft Goods Buna-N / Florosilicone

Weight

8.3 pounds (3.9 kg) aluminum

20.5 pounds (9.3 kg) stainless steel

Table IV: Positioner Specifications

Deadband <0.1% full scale

Repeatability <0.05% full scale

Linearity <0.5% (rotary), <0.8%, (sliding stem) full scale

3

Air Consumption <0.3 SCFM (0.5 Nm

Air Supply 30-150 psig (ISA 7.0.0.1 compliant)

/hr) @ 60 psi (4 bar)

10

Logix 3400IQ Digital Positioner FCD LGENIM3401-00 – 06/06

Table V: Hazardous Area Certifications

Intrinsically Safe

(PENDING)

Explosion Proof

Approved

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

Class II, III, Div 1, Groups E, F, G

(See Figure 1 for installation
requirements.)

Intrinsically Safe

(PENDING)

Flameproof

(PENDING)

CE Compliant

FISCO Compliant

II 1G EEx ia IIC T4, T5

T4 Ta = -40°C to 80°C

T5 Ta = -40°C to 35°C

IP 65

II 2 GD EEx d IIB + H2

T5, Ta = -40°C to 80°C

IP65

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

Class II, III, Div 1, Groups E, F, G

T6 Ta = 60°C

NEMA/TYPE 4X

4.2 Positioner Operation

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

The Logix 3400IQ 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 char-

acterization 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

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Logix 3400IQ Digital Positioner FCD LGENIM3401-00 – 06/06

position the stem, after any characterization or user limits have been evaluated, is called the Control
Command.

The Logix 3400IQ
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
compared against the
the inner-loop control to move the spool up or down, depending upon the deviation. The inner-loop
then quickly adjusts the spool position. The actuator pressures change and the stem begins to
move. The stem movement reduces the deviation between
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 temperature-compensated 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 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.

uses a two-stage, stem-positioning algorithm. The two stages consist of an

Control Command is

Stem Position. If any deviation exists, the control algorithm sends a signal to

Control Command and Stem Position.

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

• 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.

• Write to Final_Value to change command.

• Actuator is tubed and positioner is configured air-to-open.

Given these conditions, 50 represents a
is disabled so the
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

OOS.

Command source of 50 percent. Custom characterization

Command source is passed 1:1 to the Control Command. Since zero deviation

null or balanced spool position.

Assume the input signal changes from 50 to 75. The positioner sees this as a
of 75 percent. With
is the difference between
where 50 percent is the present stem position. With this positive deviation, the control algorithm

12

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 the top of the actuator. This new
pressure differential causes the stem to start moving towards the desired position of 75 percent. As

Linear characterization, the Control Command becomes 75 percent. Deviation

Control Command and Stem Position: Deviation = 75% - 50% = +25%,

Command source

Logix 3400IQ Digital Positioner FCD LGENIM3401-00 – 06/06

Logix 3400IQ

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

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.

Figure 3: Linear Mark One Control Valve Mounting

13

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Logix 3400IQ Digital Positioner FCD LGENIM3401-00 – 06/06

5 Mounting and Installation

5.1 Mounting to Valtek Linear Mark One Valves

To mount a Logix 3400IQ 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 corre
sponding 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

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.

14

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.

3

⁄16" from being flush with mounting pad.

Logix 3400IQ Digital Positioner FCD LGENIM3401-00 – 06/06

Positioner Bolts ¼-20 (4)*

* Located in ap propriate

hole pattern as indicated on
bracket. (25, 5 0, 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 3400IQ

Digital Positioner

Bracket Bolts

-18 (2, not shown)

5

/

16

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

Figure 4: Standard Rotary Mounting

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

• ½" 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.

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

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Logix 3400IQ Digital Positioner FCD LGENIM3401-00 – 06/06

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

5. Using a ½" end wrench and two

⁄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

1

⁄16" past the take-off arm. When properly adjusted,

securely tighten the bracketing bolts.

Orienting the Take-off Arm for Final Lock Down

1. Tube the Logix 3400IQ

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.

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.

16

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

Logix 3400IQ Digital Positioner FCD LGENIM3401-00 – 06/06

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WARNING: Failure to follow this procedure will result in positioner and/or linkage

c

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)

Figure 5: Optional Rotary Mounting

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

• ½" open-end wrench

1. Using a ½" open-end wrench and two 5⁄16-18 x ½" bolts, attach bracket to actuator transfer case

pads. Leave bracket loose to allow for adjustment.

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Logix 3400IQ Digital Positioner FCD LGENIM3401-00 – 06/06

2. Using four ¼-20 x ½" bolts and a 7⁄16" open-end wrench, fasten 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.

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 will occur to the positioner

c

and/or linkage. Check air action and stroke direction carefully before initiating
operation.

5.4 NAMUR Mounting Option

Logix 3200IQ 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 3400IQ 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 3400IQ
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

18

been tubed. The top output port is called
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:

but is not required. In applications where the supply

Output 1. It should be tubed to the side of the actuator that

Logix 3400IQ Digital Positioner FCD LGENIM3401-00 – 06/06

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 orienta
tion 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.

6 Wiring and Grounding Guidelines (See Figure 6)

WARNING: This product has electrical conduit connections in either thread sizes ½" NPT

c

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.

-

6.1 FF Command Input Wiring

The Logix 3400IQ 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 3400IQ 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.

NOTE: The Logix 3400IQ 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.

flowserve.com

19

Figure 6: Field Termination

Shielded Cable

FF Signal

Connect Shield at Source

Housing EARTH
Terminal

External
Bonding
Location

FF Field
Terminators

Environmental
Seal

Logix 3400IQ Digital Positioner FCD LGENIM3401-00 – 06/06

20

WARNING: The green grounding screw must not be used to terminate signal shield wires.

c

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
3400IQ positioner voltage. The Logix 3400IQ 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 3400IQ

digital positioner by performing the following

calculation.

Voltage = Compliance Voltage (@ 23 mA) –

23 mA • (R

barrier

+ R

)

wire

Equation 1

Logix 3400IQ Digital Positioner FCD LGENIM3401-00 – 06/06

+

-

R

barrier

(if present)

R

wire

FF
Signal
Source

Compliance

Voltage

Logix

3400IQ

Current

23 mA

9 VDC min

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

Example:

DCS Compliance Voltage = 19 VDC

R

= 300 Ω

barrier

R

= 25 Ω

wire

Current

= 23 mA

max

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.

Figure 7: Compliance Voltage

6.4 Cable Requirements

The Logix 3400IQ 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.

6.6 DD Support

The DD for the Logix 3400IQ can be downloaded from either the flowserve website: www.flowserve.
com or the F

oundation Fieldbus website: www.Fieldbus.org.

21

flowserve.com

Logix 3400IQ Digital Positioner FCD LGENIM3401-00 – 06/06

LEDs

DIP Switch Block

Jog Buttons

Rotary
Selector
Switch

RE-CAL Button

7 Startup

Figure 8: Local User Interface

7.1 Logix 3400IQ Local Interface Operation

The Logix 3400IQ 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 configura
tors. The local interface consists of a RE-CAL button for automatic zero and span setting, along
with two jog buttons (
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.

and ) for spanning valve/actuators with no fixed internal stop in the open

-

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 3400IQ 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.

22

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

Logix 3400IQ Digital Positioner FCD LGENIM3401-00 – 06/06

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.

Other Select
Flags parameter in the transducer block.

Optional Pos. Characterization

If the Pos. Characterization switch is set to Other then this 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

set-up using a properly configured 375 handheld or other host software.
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.)

Other if another characteristic is desired, which is set in conjunction with the Control_

Custom is selected, the positioner will be characterized to a custom table that must be

Custom characterization

23

flowserve.com

Figure 9: Default Custom Characterization

% 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

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

24

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

Logix 3400IQ Digital Positioner FCD LGENIM3401-00 – 06/06

% Control Command