in unpacking, installing and performing maintenance as required on FLOWSERVE products.
Product users and maintenance personnel should
thoroughly review this bulletin prior to installing,
operating or performing any maintenance.
In most cases FLOWSERVE valves, actuators
and accessories are designed for specific applications (e.g. with regard to medium, pressure,
temperature). For this reason they should not be
used in other applications without first contacting
the manufacturer.
1.2 Terms concerning safety
The safety terms DANGER, WARNING, CAU-
TION 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.
WARNING: indicates that death, severe personal injury
and/or substantial property damage can occur if proper
precautions are not taken.
CAUTION: indicates that minor personal injury and/or
property 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 emphasised
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.
1.3 Protective clothing
FLOWSERVE products are often used in problem-
atic applications (e.g. extremely high pressures,
dangerous, toxic or corrosive mediums). In particular
valves with bellows seals point to such applications.
When performing service, inspection or repair operations always ensure, that the valve and actuator are
depressurised and that the valve has been cleaned and
is free from harmful substances. In such cases pay
particular attention to personal protection (protective
clothing, gloves, glasses etc.).
1.4 Qualified personnel
Qualified personnel are people who, on account of their
training, experience and instruction and their knowledge of relevant standards, specifications, accident
prevention regulations and operating conditions, have
been authorised by those responsible for the safety of
the plant to perform the necessary work and who can
recognise and avoid possible dangers.
1.5 Installation
DANGER: Before installation check the order-no, serial-
no. and/or the tag-no. to ensure that the valve/actuator
is correct for the intended application.
Do not insulate extensions that are provided for hot
or cold services.
Pipelines must be correctly aligned to ensure that the
valve is not fitted under tension.
DANGER: indicates that death, severe personal
injury and/or substantial property damage will
occur if proper precautions are not taken.
2
Fire protection must be provided by the user.
Page 3
User Instructions Logix 505si - LGENIM0505-00 03/09
STOP!
®
1.6 Spare parts
Use only FL OWSERVE original spare parts.
FLOWSERVE cannot accept responsibility for any
damages that occur from using spare parts or
fastening materials from other manufactures. If
FLOWSERVE products (especially sealing materials)
have been on store for longer periods check these
for corrosion or deterioration before using these
products. Fire protection for FLOWSERVE products
must be provided by the end user.
1.7 Service / repair
To avoid possible injury to personnel or damage to
products, safety terms must be strictly adhered to.
Modifying this product, substituting nonfactory parts,
or using maintenance procedures other than outlined
in this instruction could drastically affect performance
and be hazardous to personnel and equipment, and
may void existing warranties. Between actuator
and valve there are moving parts. To avoid injury
FLOWSERVE provides pinch-point-protection in the
form of cover plates, especially where side-mounted
positioners are fitted. If these plates are removed
for inspection, service or repair special attention is
required. After completing work the cover plates must
be refitted.
1.9 Valve and actuator variations
These instructions cannot claim to cover all details of
all possible product variations, nor in particular can
they provide information for every possible example of
installation, operation or maintenance. This means that
the instructions normally include only the directions to
be followed by qualified personal where the product
is being used for is defined purpose. If there are any
uncertainties in this respect particularly in the event
of missing product-related information, clarification
must be obtained via the appropriate FLOWSERVE
sales office.
2 UNPACKING
Each delivery includes a packing slip. When unpacking,
check all delivered valves and accessories using this
packing slip.
Report transport damage to the carrier immediately.
In case of discrepancies, contact your nearest
FLOWSERVE location.
Apart from the operating instructions and the
obligatory accident prevention directives valid in the
country of use, all recognised regulations for safety
and good engineering practices must be followed.
WA R N I N G : Before products ar e returned to
FLOWSERVE for repair or service FLOWSERVE must
be provided with a certificate which confirms that
the product has been decontaminated and is clean.
FLOWSERVE will not accept deliveries if a certificate
has not been provided (a form can be obtained from
FLOWSERVE).
1.8 Storage
In most cases FLOWSERVE products are manufactured
from stainless steel. Products not manufactured
from stainless steel are provided with an epoxy resin
coating. This means that FLOWSERVE products
are well protected from corrosion. Nevertheless
FLOWSERVE products must be stored adequately
in a clean, dry environment. Plastic caps are fitted
to protect the flange faces to prevent the ingress of
foreign materials. These caps should not be removed
until the valve is actually mounted into the system.
3
Page 4
®
3 LOGIX 505si OVERVIEW
The Logix 505si is a two-wire, 4-20 mA input digital
valve positioner. The Logix 505si positioner controls
single-acting actuators with linear and rotary mountings. The Logix 505si is completely powered by the 4-20
mA input signal. The minimum input signal required to
function is 3,6 mA.
Since the positioner is insensitive to supply pressure
changes and can handle supply pressures from 1,5 to
6 barg (22 to 87 psig), a supply regulator is usually not
required; however, in applications where the supply
pressure is higher than the maximum actuator pressure rating a supply regulator is required to lower the
4 SPECIFICATIONS
User Instructions Logix 505si - LGENIM0505-00 03/09
pressure to the actuator’s maximum rating (not to be
confused with operating range). A coalescing air filter
is recommended for all applications due to the close
tolerances in the positioner.
NOTE:The air supply must conform to ISA 7.0.01or
IEC 770 (a dew point at least 10 ˚C / 18 ˚F below ambient temperature, particle size below five microns – one
micron recommended – and oil content not to exceed
one part per million).
Table 1: Input Signal
Input Signal Range4 - 20 mA
Compliance Voltage6 VDC
Voltage Supply (maximum)30 VDC
Minimum Required Operating
Current
Table 2: Stroke Output
Feedback Shaft RotationMin. 15°, max 90°
Table 3: Air Supply
Air Supply QualityFree from moisture, oil and dust
Input Pressure Range1,5 to 6,0 bar (22 to 87 psi)
Air Consumption (steady state)
3,6 mA
40° recommended for linear
applications
per IEC 770 and ISA-7.0.01
0,08 Nm³/h @ 1,5 bar
(0,047 SCFM @ 22 psi)
0,12 Nm³/h @ 6,0 bar
(0,071 SCFM @ 87 psi)
Table 5: Shipping Weights
Base Positioner without
Accessories
Table 6: Performance Characteristics (typical)
Linearity< +/- 1,0%
Resolution< 0,3%
Repeatability< 0,5%
Deadband< 0,5%
Table 7: Environmental Conditions
Operating Temperature
Standard
Operating Temperature
Low
Transport and Storage
Temperature
Operating Humidity0 to 100% non-condensing
1,2 kg (2,65 lbs)
-20 °C to +80 °C
(-4 °F to +178 °F)
-40 °C to +80 °C
(-40 °F to +178 °F)
-40 °C to +80 °C
(-40 °F to +178 °F)
Table 4: Output Signal
Output Pressure Range0 to 100% of air supply pressure
User Instructions Logix 505si - LGENIM0505-00 03/09
Local
User
Interface
4 – 20 mA
Stroke
Inner Loop
Position Feedback
1 Digital Control Circuit
2 Electro-pneumatic
Converter Module
3 Valve Position
Sensor
Inner Loop
Piezo Control
Filter / Regulator
for Supply Air
1.5 – 6.0 bar (22 – 87 psi)
Air Supply
-
Micro-
Processor
Pressure Regulator
Piezo Valve
Pneumatic
Amplifier
Control Valve
+
Input
®
Figure 1: Logix 505si Principle of Operation
5 PRINCIPLE OF OPERATION
The Logix 505si positioner is a basic digital positioner
consisting of three main modules:
1. The microprocessor based electronic control
module includes direct local user interface switches
2. The piezo valve based electro-pneumatic converter
module
3. The infinite resolution valve position sensor.
The basic positioner operation is best understood by
referring to Figure 1. The complete control circuit is
powered by the two-wire, 4-20 mA command signal. The
analog 4-20 mA command is passed to the microprocessor, where it is compared to the measured valve stem position. The control algorithm in the processor performs
control calculations and produces an output command
to the piezo valve, which drives the pneumatic amplifier.
The position of the pilot valve in the pneumatic amplifier
is measured and relayed to the inner loop control circuit.
This two-stage control provides for more responsive
and tighter control than is possible with a single stage
control algorithm. The pneumatic amplifier controls
the airflow to the actuator. The change of pressure and
volume of the air in the actuator causes the valve to
stroke. As the valve approaches the desired position,
the difference between the commanded position and
the measured position becomes smaller and the output
to the piezo is decreased. This, in turn, causes the pilot
valve to close and the resulting flow to decrease, which
slows the actuator movement as it approaches the new
6 TUBING POSITIONER TO ACTUATOR
After mounting has been completed, tube the positioner
Air connections: 1/4” NPT (standard air connection)
Auxiliary power: Pressurized air or permissible gases,
Pressure range: 1,5 – 6,0 bar (22 – 87 psi)
For connecting the air piping, the following notes should
1. The positioner passageways are equipped with
2. Supply air should meet IEC 770 or ISA 7.0.01
3. With a maximum supply pressure of 6 bar (87 psi)
4. With a n operating pressure of more than
commanded position. When the valve actuator is at the
desired position, the pneumatic amplifier output is held
at zero, which holds the valve in a constant position.
to the actuator using the appropriate compression fitting connectors:
free of moisture and dust in according with IEC 770 or
ISA 7.0.01.
be observed:
screws, which remove medium and coarse size dirt
from the pressurized air. If necessary, they are easily
accessible for cleaning.
requirements. A coalescing filter should be installed in
front of the supply air connection Z. Now connect the
air supply to the filter, which is connected to the Logix
500 Series positioner.
a regulator is not required.
6 bar (87 psi), a reducing regulator is required. The
5
Page 6
Internal Housing
EARTH Terminal
User Instructions Logix 505si - LGENIM0505-00 03/09
®
Table 10: Connection Table
Connection Description
+11 Input+ 4..20 mA
Y
Z
4-20 mA Signal
-12 Input- 4..20 mA
Y (0⇒) Pneumatic output signal (outlet)
Z (0⇐) Air supply
Shielded Cable
Connect Shield at Source Ground
-
4-20 mA Current Source
+
Figure 2: Wiring Diagram
flow capacity of the regulator must be larger than the
flow capacity of the positioner (7 Nm3/h @ 6 bar / 4,12
scfm @ 87 psi).
5. Connect the outlet connector Y of the positioner
to the actuator with tubing, independent of the action
(direct or reverse).
7 WIRING AND GROUNDING GUIDELINES
Electrical connections: signal cable with cable passage
(NPT or M20 x 1,5) to terminals 2 x 2,5 mm
Input signal: 4 – 20 mA
NOTE:Observe the minimum requirements of voltage
and equivalent electrical load: 6,0 VDC / 300 Ω / at
20 mA
The performance is ensured only for a minimum input
current of 3,6 mA.
For wiring, the following notes should be observed:
NOTE:The input loop current signal to the Logix 505si
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. (Figure 2)
Connect the 4-20 mA current source to terminals +11
and -12 (Figure 2).
Grounding Screw
The grounding screw, located inside the positioner
cover, 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. The grounded screw
must not be used to terminate signal shield wires.
Compliance Voltage (Figure 3)
Output compliance voltage refers to the voltage limit
the current source can provide. A current loop system
consists of the current source, wiring resistance, barrier
resistance (if present), and the Logix 505si impedance.
The Logix 505si requires that the current loop system
allow for a 6,0 VDC drop across the positioner at maximum loop current.
CAUTION:Never connect a voltage source directly
across the positioner terminals. This could cause permanent circuit board damage.
6
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User Instructions Logix 505si - LGENIM0505-00 03/09
510
Controller
Voltage
Compliance
Voltage
12V
®
Figure 3: Compliance Voltage
In order to determine if the loop will support the Logix
505si, perform the following calculation:
Available Voltage = Controller Voltage (@Current
- Current
MAX
*(R
barrier
+ R
The calculated available voltage must be greater than
6.0 VDC in order to support the Logix 505si.
Example: DCS Controller Voltage = 19 V
R
R
CURRENT
barrier
= 25 Ω
wire
= 300Ω
MAX
= 20 mA
Voltage = 19 V - 0,020 A*(300Ω + 25 Ω)
= 12,5 V
The available voltage 12,5 V is greater than the required
6.0 V; therefore, this system will support the Logix
505si. The
to 300 Ω
Logix 505si has an input resistance equivalent
at a 20 mA input current.
wire
MAX
)
)
6V
505si
In the event of a severe electrostatic discharge near the
positioner, the device should be inspected to ensure
correct operability. It may be necessary to recalibrate
the Logix 505si positioner to restore operation.
8 STARTUP
8.1 Logix 505si Local Interface Operation
The Logix 505si local user interface allows the user to
configure the operation of the positioner, tune the response, and calibrate the positioner. The Local interface
consists of a quick calibration button for automatic zero
and span setting. There is also a switch block containing 4 switches. For indication of the operational status
or alarm conditions there are 3 LEDs on the local user
interface. This document describes the setting and use
of the Logix 505si user interface.
8.2 Initial DIP Switch Setting
Before placing the unit in service, set the DIP switches
to the desired control options. For a detailed description
of each DIP switch setting, see sections below.
NOTE:The switch settings except the gain modifier
are activated only by pressing the Quick-Cal button.
The gain modifier switch is active at all times.
The Logix 505si digital positioner has been designed to
operate correctly in electromagnetic (EM) fields found
in typical industrial environments. Care should be taken
to prevent the positioner from being used in environments with excessively high EM field strengths (greater
than 10 V/m). Portable EM devices such as hand-held
two-way radios should not be used within 30 cm of the
device.
Ensure proper wiring and shielding techniques of the
control lines, and route control lines away from electromagnetic sources that may cause unwanted noise.
An electromagnetic line filter can be used to further
eliminate noise (FLOWSERVE Part Number 10156843).
Operation of CONFIGURATION DIP switch Setupa. 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.
7
Page 8
Configuration
STOP!
Switches
User Instructions Logix 505si - LGENIM0505-00 03/09
®
LED Status
Lights
Quick-Cal
Switch
Figure 4: Logix 505si Local Interface
b. Split range - Split range selection is used to limit the
action control region to either 4 - 12 mA or 12 - 20 mA.
Thisallows two valves to be controled from the same
4 - 20 mA control line.
•Full: The 505si uses the full 4 - 20 mA range to control
the valve.
•Split: The 505si uses either 4 - 12 or 12 - 20 mA to
control the valve.
c. 4 - 12 (12 - 4) or 12 - 20 (20 - 12) is used to select the
range used for control. This switch is only active when
the full/split switch is in the split position.
d. Gain Switch – This switch adjusts the position control
algorithm of the positioner for standard or low gain.
•Standard: Placing the switch to the left opmizes
the response for low friction, high performance control
valves. This setting provides for optimum response
times when used with most low friction control valves.
•Low: Placing the switch to the right reduces the gain. It
also optimizes the response for valves and actuators with
8
4-20 mA Input
high friction levels. This setting slightly slows the
response and will normally stop limit cycling that can
occur on high friction valves.
WARNING:During the Quick-Cal operation the valve
may stroke unexpectedly. Notify proper personnel
that the valve will stroke, and make sure the valve is
properly isolated.
8.3 QUICK-CAL Operation
The QUICK-CAL button is used to locally initiate a
calibration of the positioner. Pressing and holding the
QUICK-CAL button for approximately 3 seconds will initiate the calibration. The settings of all the configuration
switches are read and the operation of the positioner
adjusted accordingly. A QUICK-CAL can be aborted at
any time by briefly pressing the QUICK-CAL button and
the previous settings will be retained. 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. (see the section 9 for
an explanation of the various light sequences)
8.4 Factory reset
Hold Quick cal button while applying power and all of
the internal variables including calibration will be reset
to factory defaults. The positioner must be re-calibrated
after a factory reset.
Page 9
User Instructions Logix 505si - LGENIM0505-00 03/09
®
9 STATUS CODES
Logix 505si Status Condition Codes
ColorsIdentifierIndication and resolution
G - - -
GGGG1No errors, alerts, or warnings.
GGGY2MPC active - The command is below the 1% command limit for tight shutoff feature. This is a normal
GGYR3LED test mode, Initializing - This sequence should only be visible for 3 sequences when powering up the unit.
Y - - -Any sequence starting with a yellow light indicates that the unit is in a special calibration or test mode, or that there
YYYY4Relay not operating during calibration – Most Likely the Air supply is not connected. Could also be due to a bad
YYYR5Command minimum saturated - Calibration error indicating that the 4-20 mA signal corresponding to the minimum
YYRR6Command span - Calibration error indicating that the 4-20 mA signal was below the minimum calibration span.
YYRY7 Command maximum saturated - Calibration error indicating that the 4-20 mA signal corresponding the maximum
YRRR9Feedback span - The range of motion of the position feedback arm was too small. Check for loose linkages and/or adjust
YRRY10Feedback 100 saturated - Calibration error indicating that the position sensor was out of range during the calibration. To
YRYY12Feedback no-motion during calibration - Indicates that there was no motion of the actuator based on the current
YRYG13Setting IL offset (during Stroke calibration) - An automatic step in the calibration process that is done with the valve
YRYR14Feedback 0 saturated - Calibration error indicating that the position sensor was out of range during the valve a 50%
15Stroke Calibration in Progress - Calibration sequence started using the local quick-cal button. It may be cancelled
YRGY16Unable to set IL offset during QUICK-CAL – This may occur on very large or small actuators on the first calibration
YRGR17Feedback unstable during calibration - Check for loose linkages or loose positioner sensor. This error may be
Any sequence starting with a Green light flashing first is a normal operating mode and indicates that there are no
internal problems.
condition for a closed valve. To clear the condition, adjust the command signal above the specified MPC value, or
disable the feature by moving the Tight Shutoff switch to the off position and recalibrating.
was a calibration problem.
pneumatic relay, failed electronics, or a loose or bad connector from the electronics to the relay.
command was too low. Adjust the signal to higher range and re-do the calibration. This error may be cleared by briefly
pushing the quick-cal button, which will force the positioner to use the parameters from the last good calibration.
The minimum calibration span is 3.0 mA. This error may be cleared by briefly pushing the quick-cal button, which
will force the positioner to use the parameters from the last good calibration or if the and
simultaneously the calibrated span will be used even though it is less than the recommended range.
pushing the quick-cal button, which will force the positioner to use the parameters from the last good calibration.
c
ommand was too high. Adjust the signal a lower range and re-do the calibration. This error may be cleared by briefly pushing the
quick-cal button, which will force the positioner to use the parameters from the last good calibration.
the feedback pin to a position closer to the follower arm pivot to create a larger angle of rotation. Also check the air supply
to make sure the system is properly connected. This error may be cleared by briefly pushing the quick-cal button, which
will force the positioner to use the parameters from the last good calibration.
correct the condition, adjust the positioner mounting, linkage or feedback potentiometer to move the position sensor back
into range then restart the calibration. This error may be cleared by briefly pushing the quick-cal button, which will force the
positioner to use the parameters from the last good calibration.
stroke time configuration. Check linkages and air supply to make sure the system is properly connected. If the time
out occurred because the actuator is very large then simply retry the Quick cal and the positioner will automatically
adjust for a larger actuator by doubling the time allowed for movement. This error may be cleared by briefly pushing
the quick-cal button, which will force the positioner to use the parameters from the last good calibration.
a 50% position. This must be completed for proper operation.
position. This must be completed for proper operation. calibration. To correct the condition, adjust the positioner
mounting, linkage or feedback potentiometer to move the position sensor back into range then restart the calibration.
This error may be cleared by briefly pushing the quick-cal button, which will force the positioner to use the parameters
from the last good calibration.
by briefly pushing the quick-cal button.
attempt. The Logix 505 will automatically adjust parameters for future calibrations. To Continue briefly push the
quick-cal button to acknowledge and restart quick-cal.
cleared by briefly pushing the quick-cal button, which will force the positioner to use the parameters from the last
good calibration.
buttons are pressed
may be cleared by briefly
9
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User Instructions Logix 505si - LGENIM0505-00 03/09
®
Logix 505si Status Condition Codes
ColorsIdentifierIndication and resolution
YGRY23Analog output span too small - The span must be calibrated to a range greater than 3.0 mA. This error may be
cleared by briefly pushing the quick-cal button, which will force the positioner to use the parameters from the last
good calibration.
R - - -Any sequence starting with a red light indicates that there is an operational problem with the unit.
RRYY25Piezo voltage - (bad electronic assembly - replace.)
RYYR26Relay not operating – Most Likely the Air supply is disconnected. Could also be due to a bad pneumatic relay, failed
electronics, or a loose or bad connector from the electronics to the relay.
RYRY27Relay failed – Could be due to a bad pneumatic relay, failed electronics, or a loose or bad connector from the
electronics to the relay.
RGRR28Position Deviation – Indicates that he position has exceeded a fixed 20% error between command and position
for a period of time 5 times longer than the recorded stroke time. This error is usually seen when the positioner is
first mounted and powered up before a stroke calibration has been done. If the positioner is properly calibrated,
the air supply is correct, and the linkage is properly adjusted this error normally indicates that there is a mechanical
problem in the positioner, actuator, or valve that is preventing the valve from stroking properly. If a regulated air
supply connected to the actuator properly strokes the valve this indicates a bad positioner and should be replaced
if a calibration does not clear the error.
10
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User Instructions Logix 505si - LGENIM0505-00 03/09
®
10 TROUBLESHOOTING LOGIX 505SI DIGITAL POSITIONERS
Failure Probable Cause Corrective action
No LED is blinking 1. Current source below 3.6 mA
2. Incorrect wiring polarity
Unit does not respond
1.Error occurred during calibration 1. Correct calibration error. Recalibrate
to analog commands
Valve position reading is
not what is expected
1. Stroke not calibrated
2. Stem position sensor mounting
is off 180 degrees
Position is driven fully
open or closed and will
not respond to command
1. Stroke not calibrated1. Calibrate valve stroke
2. Inner-loop hall sensor not connected2. Verify hardware connections
3. Wrong air action set on DIP switch3. Check ATO (Air-to-open) and ATC