About the manual 19
Terms and abbreviations used in this manual
General terms and abbreviations
Term Explanation
Command word See Control word.
Communication module Communication module is a name for a device
(eg, a fieldbus adapter) through which the drive
is connected to an external communication
network (eg, a fieldbus). The communication
with the module is activated with a drive
parameter.
Control word 16-bit or 32-bit word from master to slave with
bit-coded control signals (sometimes called the
Command word).
DCU profile Drive Control Unit profile, native profile used in
the ACS350 and ACS355 drives
DTC Direct Torque Control is a motor control method
for AC drives. DTC allows accurate control of
both motor speed and torque without pulse
encoder feedback from the motor shaft.
FBA profile Fieldbus Adapter profile, native profile used in
the ACQ810, ACS850 and ACSM1 drives
FDNA-01 DeviceNet
adapter module
One of the optional fieldbus adapter modules
available for ABB drives. FDNA-01 is a device
through which an ABB drive is connected to a
DeviceNet serial communication bus.
LSW Least significant word
MSW Most significant word
Parameter An operating instruction for the drive.
Parameters can be read and programmed with
the drive control panel, drive PC tools or
through the adapter module.
Profile Adaptation of the protocol for certain application
field, for example, drives.
In this manual, drive-internal profiles (eg, DCU
or FBA) are called native profiles.
RFG Ramp Function Generator
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