7 LCP9H 70 en 7
4.1 Functionality
The functionality of the LCP9H push buttons and pur-
pose of the LEDs are described below in 4.1.1-7.
Functionality of the LCP9H is lost in the following cases:
❑If the 24 V DC supply power is disconnected
❑If there is no communication between the LCP9H
and the VG9000H, e.g. the cable is broken or
disconnected
❑If the polarity of wires is incorrect
❑If the Loop A (7, 8) and Loop B (9, 10) wires are
mixed in the VG9000H
These above-mentioned cases do not affect the valve
position. Alarm LED is blinking in those cases.
The buttons need to be pushed (0.2–10 seconds) and
released to perform the desired function.
4.1.1 Close / Open button
❑This functionality is only available in LCP9H.
LCP9HW and LCP9HEW do not have the valve
close/open functionality.
❑The purpose of the Close / Open button is to
manually close or open the valve depending on
the assembly and configuration of the valve. It
means that this will drive the valve to safety posi-
tion.
❑The button face is user selectable (open/close).
This applies to LCP9H only and there are two
faceplates in the delivery of the LCP9H box.
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.
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 HART
(DTM, EDD) or from the LUI (Local User Inter-
face) of the VG9000H. See VG9000H manual
7VG970en for details.
❑The manual test via LCP9H uses the same stroke
size than manual PST programmed into
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
with this Test button even if the test is started via
HART or LUI.
4.1.4 Ready-To-Reset LED
❑The Ready-To-Reset LED is turned on when mA
signal from the safety system (or RCI9H) to the
VG9000H is in the normal state (above 16.0 mA)
and the Reset button has not yet been pushed. It
indicates that the Reset button can be used.
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 and the triggering limits are user
selectable.
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 via HART (DTM, EDD).
❑The Test LED will also be turned on during other
tests: pneumatics test, automatic or manual PST
and ETT. See the VG9000H manual for other test
details.
❑The LED will blink few times if the test starting
fails.
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.
NOTE:
When the button is pushed and released, the valve will
be driven to the normal operating position; i.e. it will
open the valve if it is the emergency shutdown valve
and it will close the valve when it is the emergency
blowdown (venting) valve
NOTE:
Make sure to push the Reset button only when it is safe
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.
