Samson 3730-3 ESD, Mounting And Operating Instructions

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“.

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

12

EB 8388-1 EN

ESD functions