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Operation

The positioner can be operated on site using
the rotary pushbutton (see section 2.1.1
“On-site operation“). Alarms are indicated
on the LCD and issued over the fault alarm
output (condensed status).

The

TROVIS-VIEW 3

software allows for

convenient operation when communicating
through the SAMSON SSP interface proto-
col. Thanks to DD and the FDT/DTM con-
cept, the ESD functions can easily be inte-
grated into the process control system or as-
set management system.

The instructions concerning operation in the
following sections refer to operation with
TROVIS-VIEW 3.

Note!

All parameter settings entered in the

user interface need to be downloaded to the
positioner to become effective.

1.2

ESD functions

ESD mode

In ESD mode, the safety shut-off valve is
moved to a specific set point within its work-
ing range. The valve does not perform any
control tasks anymore. The valve is fully
closed in case of an emergency.

In its basic setting, the positioner behaves
similar to a solenoid valve, which keeps the
attached valve to a set position, e.g. open.

For test purposes, the partial stroke test can
either be started manually (ESD Man) or
triggered automatically according to sched-
ule (ESD Auto).

Partial stroke test

The partial stroke test integrated into the
positioner can prevent a normally open
valve or a valve in its end position from
seizing up or getting jammed.

As the course of the partial stroke test is
plotted, the dynamic control response can
also be analyzed.

During the test, the valve is moved out of the
end position or from a start value either in
steps or in a ramp function until it reaches a
defined final value. Then, the valve is moved
back again to its initial position.

The partial stroke test is performed, for ex-
ample between 10 and 15 % of the rated
travel, starting from the end position while
the plant is running, yet without disrupting
plant operation. The start and stop values
for the partial stroke test can be configured
by the user.

The following test cancellation conditions
provide additional protection against the
valve slamming shut and moving past the fi-
nal value:

4

Valve position x

4

Drive signal y

4

Maximum test time is exceeded

4

Tolerance range exceeded

The course of the

controlled variable x, ref-

erence variable w, setpoint deviation e, and
drive signal y parameters is saved in the
positioner, assigned to the operating hours
counter.

The

dead time, T63, T98, overshooting, rise

time, and response time parameters of a
step response test are analyzed separately

4

EB 8388-1 EN

Description

Содержание 3730-3 ESD

Страница 1: ...ectropneumatic Positioner Type 3730 3 ESD Version With HART communication Mounting and Operating Instructions EB 8388 1 EN Firmware version 1 4x Edition November 2006 Fig 1 ESD mode in SAMSON TROVIS V...

Страница 2: ...ting the diagnostic ESD log 7 2 ESD functions 8 2 1 Changing ESD parameters and starting the partial stroke test 12 2 1 1 On site operation 13 2 2 Analyzing measured data 13 2 2 1 Condensed state Faul...

Страница 3: ...s active the positioner keeps the attached valve to a set position e g open The valve does not per form any control tasks anymore In AUTO operating mode the positioner can be used to control the attac...

Страница 4: ...ording to sched ule ESD Auto Partial stroke test The partial stroke test integrated into the positioner can prevent a normally open valve or a valve in its end position from seizing up or getting jamm...

Страница 5: ...ositioner 1 3 1 Converting TROVIS VIEW 3 The TROVIS VIEW 3 version must match the software version of the positioner When establishing communication or ex changing data between the PC and the position...

Страница 6: ...ng mode The ESD code can be found on page 21 Remove the code or make it unreadable to prevent unauthorized use Entering the code on the positioner Default OFF Turn Code 3 Press Turn ON Press Display s...

Страница 7: ...ion Select Print in the File menu to add further information 1 In the File menu select Print Options to choose the scope of the diagnostic log After installing updating the TROVIS VIEW software custom...

Страница 8: ...SD mode parameter in the Diagnosis folder under Emergency Shut Down is set to On In ESD mode the safety shut off valve is specifically moved to the set point of the valve working range parameter Requi...

Страница 9: ...before the test starts Starting from the Step start position pos 2 the valve moves to the defined end position Step end parameter pos 3 The valve re mains in this position for the time defined by the...

Страница 10: ...ction Fig 2 right The ramp function is active when the Activa tion of the ramp function parameter is set to On Note A step before the partial stroke test can be prevented by allocating the value of th...

Страница 11: ...e value falls below the adjusted valve position range 10 to 110 The condition is only active when Activa tion x control is set to On 4 y control value The test is cancelled when the value falls below...

Страница 12: ...s ESd the Manual reference variable w and MAN 5 Set the parameters in the Emergency Shut Down folder as desired The further course of action depends on whether the test is to be started manually Test...

Страница 13: ...when the positioner is in ESD Man operating mode 4 Setting the reference variable Manual w using Code 1 4 Setting the ESD parameters using Code 49 see section 2 5 Starting the partial stroke test 1 Se...

Страница 14: ...ead time s 4 T63 s 4 T98 s 4 Rise time s 4 Settling time s 2 2 1 Condensed state Fault alarm output The Fault alarm output parameter allows you to define which type of alarm is issued by the hardware...

Страница 15: ...easured values of the parame ters determined during the partial stroke test are listed in the Measured data folder 2 4 Resetting ESD TROVIS VIEW 3 Diagnosis Emergency Shut Down Reset ESD Using the Res...

Страница 16: ...l angle is displayed in when the positioner is initialized Otherwise the sensor position in relation to the central axis is indicated in degrees 3 Unlocking the positioner configuration OFF ON ESC OFF...

Страница 17: ...0 0 0 The test is cancelled when the valve position falls below this value E2 Activation y control On Off Off Activates or deactivates y monitoring Activation only makes sense when the partial stroke...

Страница 18: ...led x values outside the toler ance band occurred F5 Max test time exceeded Test not completed within the maximum test duration and therefore cancelled F6 Test manually cancelled Test cancelled by the...

Страница 19: ...no further settings need to be entered EB 8388 1 EN 19 EXPERT test functions Operating mode Code 0 EXPERT functions Test requirements AUtO As in EB 8388 EN MAN ESD mode ESD Man Data logger Statistica...

Страница 20: ...the con trol system and the asset management sys tem As shown in Fig 4 no solenoid valve is re quired since the positioner similar to the so lenoid valve is certified for safe shutdown When the energy...

Страница 21: ...tegrated into the positioner terminals 81 82 is used to gether with an existing external solenoid valve to trigger the data logger EB 8388 1 EN 21 Notes on applications ESD code 1732 24 V 4 20 mA 81 8...

Страница 22: ...22 EB 8388 1 EN...

Страница 23: ...EB 8388 1 EN 23...

Страница 24: ...SAMSON AG MESS UND REGELTECHNIK Weism llerstra e 3 60314 Frankfurt am Main Germany Phone 49 69 4009 0 Fax 49 69 4009 1507 Internet http www samson de EB 8388 1 EN 2007 01...

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