Technical data

HN.50.Y1.02 11
Identification of PVPX PVPX is used as a safety device for the PVG
and dumps to tanks LS pressure in dangerous
situations. With PVG CIP it is possible to se-
lect whether PVPX is to dump the LS pressure
if a fault occurs in PVEH/PVES (pin 3).
In all cases of fault from a PVE of type
PVEH/S, PVG CIP will automatically send a
fault message on the bus so that an external
controller or similar unit is able to react to the
information. Whether PVPX is present and
whether it must be activated in the case of a
PVEH/PVES fault can be determined from the
following table.
Note: If an extra component for control of the
PVPX is not mapped, it will automati-
cally be actuated upon start-up.
Units -
PVPX can be set as follows:
0. PVPX N/A
1. PVPX present
• Controlled by external
source, e.g. joystick or
controller input
2. PVPX present:
• Controlled by alarm signal
from PVEH/S
• Controlled by external
source, e.g. joystick or
controller input
Max. -
Min. -
Standard 0
Precision -
OD index 2018 subindex 9 HEX
Connections between data
(joystick signals) and PVE,
PVPX/PVPE
Units -
Max. -
Min. -
Standard 0
Precision -
OD index 2104 HEX
System-related parameters To be able to set up and service PVG CIP
some system-related parameters have to be
set:
• Baudrate
• Node identification
• Softwiring
To set up which joystick or other sources the
PVG CIP is to listen to, the relevant COB-ID
must be set in the following OD index.
PVG CIP is able to listen to a maximum of four
different COB-IDs.
Connections to other
components on bus
Units -
Max. -
Min. -
Standard 0
Precision -
OD-index 1400 subindex 1 HEX
1401 subindex 1 HEX
1402 subindex 1 HEX
1403 subindex 1 HEX
Note: If some COB-IDs are not used, they
must be set to zero.
To set up the system the joystick on/off and
proportional functions must be directed to the
correct PVEs and PVPX/PVPE. This can be
done by connecting the PVEs to the correct
position on the COB. See example on
page 21.
Control of dump valves
To ensure that an external controller or a
joystick is able to control the PVPX, an on/off
signal can be mapped to control it. Because it
is NO (normally open) a constant voltage must
be applied to PVPX/PVPE so that it does not
dump the LS pressure and thereby deactivate
the PVG. During an alarm condition, voltage
must therefore be removed. In other words, if
a joystick is used, the button that is mapped
for PVPE/PVPX acts as a deadman’s button.