Eltorque QT250 - 1.11 About this user manual

Introduction
Page 12 of 92
User Manual QT250 and QT800 gen 2.5, ID 2021 2.3 20. April 2021
Term
Description
IACS
International Association of Classification Societies
IAS
Integrated Automation System.
ICS
Integrated Control System.
IMO
International Maritime Organization
LR
Lloyd’s Register.
MAST
Maximum allowable stem torque/thrust.
MD
Material Declaration.
MEPC
The Marine Environment Protection Committee
OSI model
Open Systems Interconnection model. The model is a conceptual model that
standardizes communication systems without regard to the underlying internal
structure. The model partitions a communication system into abstraction layers.
Out of range
Definition of position. The outgoing shaft is outside the defined position area.
PF
Power factor
PCB
Printed circuit board.
PLC
A Programmable Logic Controller is a digital computer used for automation of
industrial processes, such as control of machinery on factory assembly lines,
measurement and control of process plants etc.
RSW
Refrigerated sea water system
SDoc
Supplier Declaration of Conformity.
SOLAS
Safety Of Life At Sea – conversion under IMO concerning safety for personnel and ships at
sea.
SPC
Statistical process control
VA
Voltampere
UPS
Uninterruptable power supply.
Valve
A valve is a device that controls the flow of materials (gases, fluidized solids,
slurries, or liquids) by opening, closing, or partially obstructing various
passageways.
Actuator
A device for control of valves in various process control systems.
Valve top
flange
The flange on top of the valve which integrates the actuator. Key parameters to
be aware of are summarized in 3.3 Technical specification on page 19. As an
example, butterfly valves typically comprise four screw holes for the flange
integration and a square stem for valve operation.
Within range
Definition of position. The outgoing shaft is within the defined position area.
This user manual describes the guidelines for installation, setup and operation of
QT250 and QT800 in a valve control system. The valid products for this manual
are listed in Table 2: Product overview on page 8.
Chapter 1 introduces the product and this manual.
This chapter is intended for all reader groups.
Chapter 2 informs on health, safety and environment issues.
The reader group for this chapter is for supervisors, technical support and
technical management personnel.