Lcp9H And Lcp9Hw Local Control Panels For Vg9000H; General; Technical Description; System Architecture - Metso LCP9H Installation Maintenance And Operating Instructions

7 LCP9H 70 en
1 LCP9H and LCP9HW Local Control
Panels for VG9000H
1.1

General

The Local Control Panels LCP9H and LCP9HW are
designed to be used together with the VG9000H safety
valve controller. Later on in this manual LCP9H_ name is
used when both versions (LCP9H and LCP9HW) are in
question. This manual only describes the Local Control
Panel LCP9H_ wiring, configurations and functions. See
the VG9000H manual (7VG92H70en) for detailed infor-
mation, functionality and wiring connections and
options for the VG9000H.
1.2

Technical description

LCP9H permits the emergency isolation valve to be
closed (or opened) locally (close/open functionality, see
4.1.1 for details). This functionality is removed from
LCP9HW. They permit the valve to be returned to the
normal operating position when the trip initiators are
normal (manual reset functionality, see 4.1.2 for
details). There is also the option for functional testing
Fig. 1 General wiring of LCP9H_ / VG9000H
1.4

Markings

The Local Control Panel is equipped with an identifica-
tion plate sticker (Fig. 2).
Fig. 2 Identification plate
Serial
communication
Air supply
1. ValvGuard VG9000H
2. Pneumatic actuator
3. Local Control Panel LCP9H_
(PST) of the emergency isolation valve (test functional-
ity, see 4.1.3 for details).
LCP9H_ also has indicators (LEDs) for the valve posi-
tion (open/close), ready to reset, testing and alarm sta-
tus (see 4.1.4-7 for LED details).
All the buttons are lockable with e.g. padlock (max.
shackle dia. 5 mm).
1.3

System architecture

The Local Control Panel LCP9H_ is connected to the
VG9000H with a dual pair twisted cable. Communica-
tion between the devices is handled by a current loop.
The LCP9H_ also needs a 24 V DC power supply. Refer
to the general wiring of the LCP9H_ in Fig. 1. See
detailed wiring information in section 3.2.
If the LCP9H_ is used in intrinsically safe installations,
an isolator will be needed for the 24 V DC power sup-
ply, see 1.5 for compatible isolators.
AO (mA)
from safety system (or from RCI9H)
24 V DC supply
(via isolator if required)
1.5

Technical specifications

VG9000H compatibility
Compatible with VG9_H_L2_ versions.
See the VG9000H type coding for further details of
different VG9000H versions.
Temperature range
-20° to +65 °C
Electronics
Electrical connection:
max. 2.5 mm
2 pcs. of cable glands, possible cable
dimensions 6–11 mm
Power consumption:
400 mW
Power supply:11–24 V DC, 50 mA
Output is short circuit protected
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