The Syncmaster is a computer controlled hydraulic lifting
system that provides a safe lifting system for your large scale
engineering / maintenance projects. The DSL-series
synchronous lift system allows for up to 16 power packs to be
controlled by one master unit giving a maximum of 128 individually
controlled cylinder points. Note that this is the control box
only and each job requires a tailored solution for your lifting
requirements which our team can assist you with.
- SINGLE ACTING OR DOUBLE ACTING CYLINDERS
The valving allows for use of single or double acting cylinders.
The cylinders are controlled in two banks of 4 per power pack.
- NUMBER OF CYLINDERS
Each power pack can control up to eight cylinders, or groups of
cylinders. The power packs can be linked together for control by
one master unit. Up to 16 power packs can be 'daisy chained'
together, giving up to 128 individually controlled valve points.
These valve points can control one cylinder or a group of
cylinders.
- CYLINDER LOCATIONS
The system can store the 'X', 'Y' and 'Z' co-ordinates for each
cylinder, as required by lift type. Not all lift types require all
the positional data.
- NUMBER OF SLAVE SYSTEMS
Each additional power pack controlling eight cylinders is
designated as a slave system. The master unit can control up to 15
additional 8 valve power packs, giving a total of up to 128
individually controlled cylinders or groups of cylinders.
- PRESSURE TRANSDUCERS
The DURAPAC SLS system has available pressure transducers for
control of individual cylinders, as well as total cylinder load and
pressure. This is used in the 'Centre of Mass' function, for load
measuring and for pressure driven load control.
- CYLINDER AREAS AND STROKES
To calculate the load per cylinder and the correct displacement,
the program needs the cylinder piston and rod effective area, and
the stroke. This is selected from drop down menus for DURAPAC
cylinders, or manual entry of the information for other
cylinders.
- TYPES OF LIFT
- a. CORRECTION LIFT. Where the lifting surface needs to be
adjusted to bring it to a plane. An example would be one corner of
a building that has dropped. Each cylinder is given its' start and
finish position for the lift. In this case, 'X' and 'Y' position
data for the cylinders are not required.
- b. TILTING LIFT. Where the item being lifted needs to be
set to a different angle, but the lifting plane does not need
correction. For this type of lift, 'X', 'Y' and 'Z' data are
required for each cylinder.
- c. UNIFORM LIFT. Where the stroke of all cylinders is the
same. This is the simplest lift case, and does not require 'X' and
'Y' location data.
- d. MANUAL LIFT. Where each cylinder is manually jogged to
the required position. This may be used as part of the set-up for
an automated lift, or as a lift adjustment feature.
- e. PRESSURE LOAD. Where each cylinder advances until a
certain pressure is reached. Used to pre-load the structure and
lifting point to minimise the variance between the cylinder
displacement and the load displacement. Also used when applying a
set or stepped load as in the testing of pylons, anchors etc. There
are up to 5 load increments (including load reduction), duration of
each in minutes, and tolerance for the applied load. In this mode,
the cylinder live data field shows the current pressure or
tonnage.
- PRESSURE LIMITS
For an individual cylinder or for all cylinders. This can be
entered as load or pressure with the alternative value being auto
filled based on the cylinder data that has been entered.
- MAXIMUM LIFT 'SPEED'
This is the valving switching on and off to limit the displacement
per unit time rather than the actual cylinder speed. The absolute
cylinder speed is a product of pump flow rate and cylinder
effective area. As neither of these is variable within the program,
the only control available is to open and close the valve to limit
the displacement of the cylinder over a given time. You can use
manual flow control to slow the lift rate, and there is the extra
cost option of a VSD to vary pump output.
- LOAD AND CYLINDER DISPLACEMENT VARIANCE
CONTROL
The DURAPAC DSL system has available two linear transducers per
lifting point. One for monitoring the cylinder displacement, and
one for the load displacement. As there is the possibility that the
loading of the cylinder may cause some undefined amount of sinking
of the cylinder, or deformation of the load, the operator will be
able to put a limit on the difference between these two
displacements.
- CENTRE OF MASS
The DURAPAC DSL system is able to describe a boundary using either
two ('X','Y') points (diagonal corners of a rectangle), or a centre
point and radius (polar), to define an area outside of which the
centre of mass line of action must not move. This is a safety
feature for use in the levelling of tall or uneven loads.
- DATA RECORDING
Recording of data (displacement, pressure) is available over an
operator defined time base. This data can be down loaded and
exported into Microsoft Excel for further analysis and for record
keeping.