ABB RDNA-01, User Manual

Page: 51 / 88

Communication profiles
51
Figure 3. State transition diagram
Speed Actual (AC/DC Drive Object)
This attribute indicates the actual speed at which the drive is
operating. The units are scaled by the SpeedScale attribute of the
AC/DC Drive Object.
Torque Actual (AC/DC Drive Object)
This attribute indicates the actual torque at which the drive is
operating. The units are scaled by the Torque Scale attribute of
the AC/DC Drive Object.
ABB Drives communication profile
The control word and the status word
The Control Word is the principal means for controlling the drive
from a fieldbus system. It is sent by the fieldbus master station to
the drive through the adapter module. The drive switches between
its states according to the bit-coded instructions on the Control
Word, and returns status information to the master in the Status
Word. For more information see the
Firmware manual of the drive.
Non existent
Not ready
Power on
Power on
Power on AND
Start-up
Ready
state
condition
Enabled
Stopping
Power on AND
not RDY
RDY
FWD OR REV
DEC=0
Fault stop
ALM=1
Faulted
FaultRst
ALM=1
ALM=1
DEC=0
Power off
DEC=1
ALM=1
ALM = Alarm
DEC = Deceleration
FWD = Forward
RDY = Ready
REV = Rewind