ABB FENA-01, User Manual

Page: 171 / 388

EtherNet/IP – Communication profiles 171
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. See parameter 24 ODVA TORQUE SCALE for
details.
The drive provides the adapter module with a torque actual in
percent of the Motor Nominal Torque. The ODVA AC/DC drive
profile uses Newton-meter (N·m) units for the torque actual. The
ODVA Torque Actual is calculated as follows:
where
For example, for a 1000 N·m Motor Nominal Torque with a unit of
1 N·m and a drive torque actual of 50%, the ODVA Torque Actual
is:
Dta = Drive Torque Actual in Percent of Motor Nominal Torque
Ota = ODVA Torque Actual
Ut
= ODVA Torque Unit (see 24 ODVA TORQUE SCALE on page 126 )
Mt = Motor Nominal Torque in N
·
m.
Ut 100
Mt Dta
Ota
×
×
=
500
Nm 1 100
Nm 1000 50
Ut 100
Mt Dta
Ota
=
×
×
=
×
×
=