© 2014 SPX CORPORATION
4
Form No. 1000773
Rev. 0 August 12, 2014
In the context of this Instruction sheet, the following words have the meaning as
described:
Accuracy
Difference in measurement unit (usually mm or inch) be
-
tween the load movement of the leading vs the lagging lifting
point.
Actuation
time
Time period during which the spool of the directional valve
as well as the spool of a 2-position-2-way valve to at least
one hydraulic circuit is energized.
Displacement mode
Operational mode in which the PLC unit determines the
Actuation time of each 2-position-2-way valve and thus keep
the movement of the load within the preset accuracy.
Displacement sensor
Device to measure the movement of the load as a result of
the
application of forces generated by hydraulic cylinders
Forced
zero
Starting point of the controlled load movement achieved by
pressing the "Reset" button. For Displacement mode only
Hydraulic
circuit
Hydraulic Cylinder connected to a 2-way-2-position valve
and the return line of the pump unit via a hydraulic hose
Lifting
point
The location on the load where force generated by hydraulic
cylinders is applied
Manual mode
The operator is solely responsible and in
control of the movement of each cylinder while using
manual mode!
Operational mode in which the PLC unit
does NOT have any automated control function.
Measuring
system
Set of analog displacement sensor, sensor cable and
analog pressure sensor, one each per hydraulic circuit
Motion
Control
Any type of movement or translocation of a heavy load by
means of forces generated by hydraulic cylinders operated
by and under the control of a PLC-based control system
GLOSSARY
WARNING