Changing Esd Parameters And Starting The Partial Stroke Test - Samson 3730-3 ESD Mounting And Operating Instructions

ESD functions
The condition is only active when Activa-
tion tolerance band control is set to
"On".
During the course of the test, the following
parameters are changed as specified:
4
Lower x-range value (Code 8): 0 %
4
Upper x-range value (Code 9): 100 %
4
w-ramp OPEN/CLOSED (Codes 21/22):
variable
The data can be reset in the [Status mes-
sages] folder under Reset.
2.1 Changing ESD parameters
and starting the partial
stroke test
To change ESD parameters using
TROVIS-VIEW 3, proceed as follows:
1. Enter ESD code (see section 1.3.2).
If the positioner is not operated and no
data are modified by an operating
program (DTM or TROVIS-VIEW 3) for
15 minutes, the positioner is locked
again. To make additional changes, the
ESD code needs to be entered again.
2. In the [Positioner] folder under Oper-
ating mode, set the Target mode param-
eter to "Emergency Shut Down".
3. In the [Emergency Shut Down] folder, set
the ESD operating mode parameter to
"On".
4. In the [Emergency Shut Down] folder, se-
lect the ESD operating mode parameter
to "ESD Man".
The positioner alternately displays
"ESd", the Manual reference variable w ,
and "MAN".
12
EB 8388-1 EN
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 started manually) or performed au-
tomatically at certain intervals according to
schedule (–> Test started automatically ac-
cording to schedule).
Test started manually
6. Right-click the Start step response pa-
rameter and select Execute from the con-
text-sensitive menu.
7. The test will start after the "Warning.
During test start the control valve departs
from its current position at full travel! Ex-
ecute test?" message has been con-
firmed.
The positioner displays "tEst d4".
Test started automatically according to
schedule
6. Set the Auto test time parameter to the
desired interval at which the partial
stroke test is to be repeated.
If Auto test time is set to "0", the test is
not performed.
7. In ESD operating mode , select "ESD
Auto".
The test is performed at the Auto test
time interval. The first test is started
when the interval has elapsed for the
first time.
After switching the operating mode and
returning to ESD Auto mode, the Auto
test time interval starts again.
The Time until the next automatic ESD