Maintenance - Metso LCP9H Installation Maintenance And Operating Instructions

6
closing for emergency shut down valve and
opening for the emergency blowdown (venting)
valve.
❑
The button face is user selectable (open/close).
There are two faceplates in the delivery of the
LCP9H box.
NOTE:
When the button is pushed and released, the valve will
be driven to the safety position; i.e. it will close the
valve if it is the emergency shutdown valve and it will
open the valve when it is the emergency blowdown
(venting) valve.
4.1.2 Reset button
❑
The purpose of the Reset push button is to return
the valve to the normal operating position after
the emergency trip.
❑
The Reset button is operational only when the
mA signal from the safety system (or RCI9H) to
VG9000H is in the normal state, i.e. above
16.0 mA.
❑
The Ready to Reset LED is lit when mA signal
from the safety system (or RCI9H) to VG9000H is
above 16.0 mA, i.e. in the normal state. The
Reset button is then operational.
❑
Push and release the Reset button to return the
valve to the normal operating position.
NOTE:
Make sure to push the Reset button only when it is safe
to return the valve to the normal operating position.
4.1.3 Test button
❑
The purpose of the Test button is to start the par-
tial stroke test (PST) manually or to cancel the
manual partial stroke test of the emergency isola-
tion valve.
❑
The stroke size of the test can be set via DTM or
from the LUI (Local User Interface) of the
VG9000H. See VG9000H manual 7VG970en for
details.
❑
The manual test via LCP9H uses the same stroke
size than manual
VG9000H itself.
❑
To start the PST test, press and release the Test
button and the Test LED will be illuminated.
❑
To stop the ongoing manual PST test, press and
release the Test button and the manual PST test
will be cancelled. The valve will return to its nor-
mal operating position.
❑
It is also possible to cancel the manual PST test
even if it is started via HART or LUI.
4.1.4 Reset LED
❑
The Reset LED (also known as ready to reset) is
turned on when mA signal from the safety sys-
tem (or RCI9H) to the VG9000H is in the normal
state (above 16.0 mA) and the Reset button has
PST programmed into
not yet been pushed. It indicates that the Reset
button can be used.
NOTE:
Make sure to push the Reset button only when it is safe
to return the valve to the normal operating position.
4.1.5 Open and closed LEDs
❑
Open and closed LEDs indicate the valve posi-
tion and whether the emergency isolation valve is
open or closed.
❑
If the valve is in the intermediate state both LEDs
are turned off.
❑
The position information is taken from the posi-
tion information of the VG9000H safety valve con-
troller.
4.1.6 Test LED
❑
The function of the Test LED is to indicate when
the Test button is pushed and the PST test with
VG9000H has started. See Section 4.1.3. for the
Test button functionality.
❑
The Test LED will be turned on when the Test but-
ton is pushed and released. It will be on also dur-
ing the Test Warning Time. The Test Warning
Time is the VG9000H parameter and can only be
seen and changed in the DTM. See the separate
DTM manual for further details.
❑
The Test LED will also be turned on during other
tests: pneumatics test, automatic or manual PST
and ETT. See the VG9000H or DTM manuals for
other test details.
❑
The LED will blink few times if the test starting
fails.
4.1.7 Alarm LED
❑
The Alarm LED indicates the alarm state in the
VG9000H.
❑
If the Alarm LED is turned on, it means that the
Alarm status is activated in the VG9000H.
❑
The Alarm LED will blink, if the communication
between the LCP9H and the VG9000H is discon-
nected or not functional, or if the External
Devices parameter in the VG9000H is not
defined as "LCP". That parameter can only be
changed via HART or LUI.
5

MAINTENANCE

NOTE:
LCP9_ maintenance must only be carried out by Metso
certified service personnel.
Under normal service conditions there is no require-
ment for regular maintenance.
Lamp test
Push the Test button for more than 10 seconds. All the
LEDs will then be turned on and off after one another in
the following sequence: open, close, reset, test, alarm.
After the lamp test, the LEDs which were turned on
prior to this testing will be turned on.
7 LCP9H 70 en