PDF Operating Manual CAT Electro Hydraulic Control 14 Functions - 486 KB
This is the operating manual for the Caterpillar Electro-Hydraulic Control system with 14 functions.
It explains how to operate the advanced controls, configure settings, and understand system feedback.
For operators of machinery equipped with this system, this guide is essential for maximizing efficiency and utilizing all available features safely.
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Operating Manual
Elektro-Hydraulic Control
- 14 Functions -
Doc. no.: 8154 051 000 BA 00
DBT GmbH
Industriestraße 1 Telefon: +49 (0) 23 06 / 709 - 0 Email: [email protected]
D-44534 Lünen Telefax: +49 (0) 23 06 / 709 - 421 Internet: www.dbt.de
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Conditions of operation
Conditions of operation
Use in conformance with specifications
The electrohydraulic control has been designed and manufactured
exclusively as part of the control system for shields. It is only al-
lowed to be used in connection with an electronic control unit, such
as for example a PM4.
Use the electrohydraulic control only as intended.
Intended uses are:
J The electrohydraulic control is combined with an electronic con-
trol unit − as for example a single control unit of type PM4. To-
gether they form a control unit designed to operate the functions
of a shield support. The two devices are part of an adjacent con-
trol system for electrohydraulic shield supports for use in under-
ground mining. The electrohydraulic control is an essential com-
ponent of this electrohydraulic shield control. Operation of the
functions is not allowed to be made direct by pressing the but-
tons of the electrohydraulic control, but via the respective single
control unit which must be located in one of the adjacent shields.
By means of this control unit the pilot valves of the control block
are actuated manually or program−controlled.
J Additionally, there are two exceptional circumstances under
which the control block also serves as direct "control unit":
E
− emergency operation and
DBT GmbH, Lünen 2004
− repair operation.
In these cases the individual functions of the electrohydraulic
shield support are executed direct at the pilot valve of the elec-
trohydraulic control. Thus, the functions of the shield can be op-
erated even if the single control unit is locked out or has failed −
but only in well−founded exceptions and under strict observance
of the special safety regulations of the mine operator for these
cases.
Unauthorized use
Uses which are not expressly stated as intended are regarded as
unauthorized uses and are not permissible.
Unauthorized use::
J Use of the electrohydraulic control as "control unit" to operate
the functions of the shield in normal operation.
Actuating the shields exclusively by pushing a button on the pilot
valve block is unauthorized use since operation of the shield
functions must be performed from an adjacent shield.
By unauthorized uses you endanger yourself and others. You
could be severely injured or even killed. Therefore only use the
electrohydraulic control as intended!
DBT does not accept any liability for the consequences of unautho-
rized uses.
Electrohydraulic Control 14−Functions
2.4
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Storage
Storage and transport
This chapter contains important information on the correct storage
and transport of the elektrohydraulic control.
Observance of the instructions and tips will increase the service life
of the elektrohydraulic control. You will also be able to carry out the
transport work quicker and more safely.
Careful attention to the points in this chapter will help you to simplify
your day−to−day work.
Storage
Storage of new equipment
corrosion protection The surfaces of the equipment are provided with a temporary corro-
sion protection. If stored properly, the equipment parts will be pro-
tected for six months referred to the date of delivery.
Prior to delivery the hydraulically operated equipment will be tested
and operated at the DBT site using the anti corrosive and anti freez-
ing fluid HYDROCOR® CV50*). This fluid remains in the hydraulic
system for transport and a following short−time storage period.
HYDROCOR ® CV50 is freeze−proof down to − 40 degrees Celsius
and protects the metallic materials against corrosion.
HYDROCOR ® CV50 is equipped with a color indicator, which is re-
sponsive on the pH−value of the fluid. The color of the fluid will
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DBT GmbH, Lünen 2004
change from "red" to "yellow" in case the pH−value drops. A yellow
colored fluid indicates insufficient corrosion protection.
For further particulars on the properties of HYDROCOR® CV50
please refer to the respective data sheet of the manufacturer.
exposure to Protect the equipment against direct exposure to sunlight.
sunlight Store the electrical equipment, electronic components, spare parts of
rubber or plastic − such as seals and hoses − and hydraulic fluids
only in closed rooms at temperatures of 15 °C to 25 °C.
natural ageing Even with proper storage, seals and hoses are subject to natural
ageing. A storage period of approx. two years is therefore recom-
mended for these parts.
moisture and dirt Protect all hydraulic elements during storage in a suitable manner
against the ingress of dirt and moisture. The connecting surfaces of
the hydraulic components must be protected against corrosion and
closed with blind plates. Hydraulic plug−type connections and the
connectors of the electric cables must be closed with suitable caps
or plugs.
short−term storage During short−term storage (approx. 4 weeks) of equipment outdoors,
but at temperatures above freezing, electrical components need not
be removed. Such components must, however, be particularly pro-
tected against environmental influences, including high tempera-
tures, for example by suitable covers or sheathings for the controls
and by additionally covering the equipment.
long−term storage If the equipment is to be stored for more than 6 months, the cavities
in the hydraulic components must be completely filled with a pre-
serving fluid such as e.g. HYDROCOR® CV 50. This fluid must have
corrosion−protection properties and should be frost−proof within the
respective temperature range of the application. All ports must be
*) HYDROCOR ® CV50 is a trade name of Theunissen, Chemische Fabriken
GmbH, Wuppertal / Germany
Doc. no.:8154 051 000 BA 00 VEVE / 01
3.3
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Connections
Connections
The connection ports for the hydraulic lines are located on the rear
of the control valve block.
Fig. 15: Rear view of the electrohydraulic control
13 11 9 4 1 5 3 8
14 12 10 6 2
P
T 7
3
SP
Hydraulic connections
large−volume consumers connections: 5 x DN 20 socket, plug−type
marking: 3, 3, 5, 7, 8
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flow rate: max 400 l/min
DBT GmbH, Lünen 2004
application: large−volume consumers
low−volume consumers connections: 10 x DN 10 socket, plug−type
marking: 1, 2, 4, 6, 9, 10, 11, 12, 13, 14
flow rate: max 80 l/min
application: low−volume consumers
pressure supply, tank line connections: 2 x DN 25 socket, plug−type
and accumulator cartridge 1 x DN 20 socket, plug−type
marking: P − pressure supply, DN 25
T − tank line, DN 25
SP − accumulator cartridge socket, DN20
application: pressure supply to the system,
return line to the tank
socket for accumulator cartridge
Doc. no.:8154 051 000 BA 00 VEVE / 01
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