82 Communication profiles
For example, for an ODVA Speed Reference of 900 rpm with a unit
of 0.5 rpm, the drive speed reference is:
Torque Reference (AC/DC drive object)
This attribute is the torque reference for the drive. The units are
scaled by the Torque Scale attribute of the AC/DC drive object.
See Table 5. for details.
The adapter module provides the drive with a Torque Reference in
percent of the motor nominal torque. The ODVA AC/DC drive
profile uses Newton-meter (N·m) units for the Torque Reference.
The drive torque reference is calculated as follows:
where
For example, for a 1000 Nm motor nominal torque with a unit of 1
Nm and an ODVA Torque Reference of 500, the drive torque
reference is:
Dtr
= Drive torque reference in percent of motor nominal torque
Otr = ODVA Torque Reference
Ut
= ODVA torque unit (see
11
ODVA TORQUE SCALE
on page
42
)
Mt
= Motor nominal torque in Nm.
450rpm
0.5rpm
900
Us
Osr
Dsr
=
×
=
×
=
Mt
Ut
Otr
100
Dtr
×
×
=
50
Nm
1000
Nm
1
500
100
Mt
Ut
Otr
100
Dtr
=
×
×
=
×
×
=
Summary of Contents for FDNA-01
Page 2: ...List of related manuals See section Related manuals on page 16 ...
Page 4: ......
Page 14: ...14 Safety ...
Page 22: ...22 About the manual ...
Page 32: ...32 Electrical installation ...
Page 72: ...72 Start up 3 Configure the device MAC address ...
Page 76: ...76 Start up ...
Page 96: ...96 Communication profiles ...
Page 154: ...154 Communication protocol ...
Page 162: ...162 Technical data ...
Page 166: ...166 Appendix A Varying the number of drive parameters ...