ABB ACS880 Firmware Manual page 14

14 Introduction to the manual
Term/abbreviation
I/O
ISU
Line-side converter
LSB
LSW
Motor-side converter
MSB
MSW
Network control
Parameter
PID controller
PLC
Power unit
PTC
RDCO-0x
RFG
RO
SSI
STO
Supply unit
TTL
UPS
Definition
Input/Output
An IGBT supply unit; type of supply unit implemented using
IGBT switching components, used in regenerative and low-
harmonic drives.
See supply unit.
Least significant bit
Least significant word
See inverter unit.
Most significant bit
Most significant word
With fieldbus protocols based on the Common Industrial
TM
Protocol (CIP ), such as DeviceNet and Ethernet/IP, denotes
the control of the drive using the Net Ctrl and Net Ref objects of
the ODVA AC/DC Drive Profile. For more information, see
www.odva.org, and the following manuals:
• FDNA-01 DeviceNet adapter module User's manual
(3AFE68573360 [English]), and
• FENA-01/-11 Ethernet adapter module User's manual
(3AUA0000093568 [English]).
User-adjustable operation instruction to the drive, or signal
measured or calculated by the drive
Proportional–integral–derivative controller. Drive speed control
is based on PID algorithm.
Programmable logic controller
Contains the power electronics and power connections of the
drive (or inverter module). The drive control unit is connected to
the power unit.
Positive temperature coefficient
Optional DDCS communication module
Ramp function generator.
Relay output; interface for a digital output signal. Implemented
with a relay.
Synchronous serial interface
Safe torque off
In large drives (> 500 kW approx.), the part of the drive that
converts AC to DC. Consists of one or more supply modules
and their auxiliary components. An IGBT supply unit (ISU) is
also capable of feeding regenerative energy back into the
supply network.
Transistor-transistor logic
Uninterruptible power supply; power supply equipment with
battery to maintain output voltage during power failure