7 VG9H 70 en
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2
TRANSPORTATION, RECEPTION AND
STORAGE
The safety controller is a sophisticated instrument, handle it
with care.
Check the controller for any damage that may have
occurred during transportation.
Store the controller preferably indoors, keep it away
from rain and dust.
Do not unpack the device until installing it.
Do not drop or knock the controller.
Keep the flow ports and cable glands plugged until
installing.
Follow instructions elsewhere in this manual.
3
MOUNTING
3.1
General
If the ValvGuard is supplied with valve and actuator, the
tubes are mounted and the ValvGuard adjusted in accord-
ance with the customer’s specifications.
The controller is equipped for connection according to VDI/
VDE 3845.
Shaft coupling alternatives for the controller for Metso
actuators are shown in Fig. 7.
For mounting parts for Metso actuators, see 11.3 - 11.5.
3.2
Mounting on Metso actuators with
VDI/VDE mounting face
See figures in Section 11.3.
Mount the H-shaped coupling (47) to the shaft.
Apply the thread-locking compound to the screw
(48) and tighten firmly.
Remove all protective plastic plugs from the pneu-
matic connections.
BJ and other single acting actuators:
mount a
metal plug (53) with sealant to the C1 connection.
Set the direction arrow of the actuator in the direc-
tion of the valve closure member and attach the ear
(2) to the indicator cover in the position shown in
Section 11.3. Secure the screw of the ear using e.g.
Loctite and tighten firmly.
Attach the bracket (1) to the ValvGuard.
Attach the bracket (1) to the actuator. The shaft cou-
pling of the ValvGuard must fit into the ear (2) so that
the pointer is located in the position shown in Fig. 7.
3.3
Mounting on linear actuator with
IEC 60534 mounting face
See figure in Section 11.5
Attach the feedback arm with spacer to the control-
ler shaft. Note the position of the pointer on the
shaft as in 11.5. Apply thread locking compound to
the screws and tighten firmly. Attach the spring to
the feedback arm as shown in Section 11.5.
Mount the controller mounting bracket loosely to
the yoke of the actuator.
Remove all plastic plugs from all actuator connec-
tions (3 pcs.).
Mount the controller loosely to the mounting
bracket guiding the pin on the actuator stem to the
slot of the feedback arm.
Align the bracket and the controller with the actua-
tor stem and adjust their position so that the feed-
back arm is approximately at a 90° angle to the
actuator stem (in the mid-stroke position).
Tighten the controller mounting bracket screws.
Adjust the distance of the controller to the pin on
the actuator stem so that the pin stays in the lever
slot at full stroke. Ensure also that the maximum
angle of the lever does not exceed 45° in either
direction. Maximum allowed travel of the lever is
shown in Section 11.5. Best control performance is
achieved when the feedback lever utilises the maxi-
mum allowed angle (±45° from horizontal position).
The whole range should be at least 45°.
Make sure that the controller is in right angle and
tighten all the mounting bolts.
Ensure that the controller complies with previous
steps. Check that the actuator pin does not touch
the controller case throughout the entire stroke of
the actuator. If the actuator pin is too long it may be
cut to size.
NOTE:
The enclosure of ValvGuard meets the IP66 protection
class according to EN 60529. Cable entry needs to be
plugged according to IP66 and it is not allowed to mount
the ValvGuard in a position where the cable entry is point-
ing upwards.
Based on good mounting practice, the recommended
mounting position is electrical connections placed down-
wards. This recommendation is shown in our mounting
position coding for control valves.
If these requirements are not fulfilled, and the cable gland
is leaking and the leakage is damaging ValvGuard or other
electrical instrumentation, our warranty is not valid.
NOTE:
Special care must be taken that the shaft position has
been set according to marking in VG9000H housing and
the pointer in the shaft. Also make sure that the positioner
fail action parameter (PFA) is set correctly (Section 4.4.3).
Fig. 7
Mounting on Metso actuator with VDI/VDE mount-
ing face
C2
S
C1
The pointer on the coupling must
stay in this sector
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