EtherNet/IP – Communication profiles 169
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. See parameter
23
ODVA SPEED SCALE
for
details.
Scalar mode
When the drive is operating in the scalar mode, the drive provides
the adapter module with a frequency actual. The ODVA AC/DC
drive profile uses rpm units for the speed actual. The ODVA Speed
Actual is calculated as follows:
where
For example, for a 4-pole 60 Hz motor (Mss = 1800 rpm) with a
unit of 1 rpm and a Drive Frequency Actual of 30 Hz, the ODVA
Speed Actual is:
Osa = ODVA Speed Actual
Dfa = Drive Frequency Actual in Hz
Us
= ODVA Speed Unit (see
23
ODVA SPEED SCALE
on page
125
)
Mf
= Motor Nominal Frequency in Hz
Mss = Motor Synchronous Speed in rpm (not Motor Nominal Speed).
Us
Mf
Mss
Dfa
Osa
×
×
=
900
1rpm
60Hz
1800rpm
30Hz
Us
Mf
Mss
Dfa
Osa
=
×
×
=
×
×
=
Summary of Contents for FENA-01
Page 4: ......
Page 20: ...20 Safety instructions ...
Page 32: ...32 Introduction to the manual ...
Page 38: ...38 Overview of the Ethernet network and the FENA 01 11 21 module ...
Page 42: ...42 Mechanical installation ...
Page 46: ...46 Electrical installation ...
Page 48: ......
Page 94: ...94 Modbus TCP Communication profiles ...
Page 106: ...106 Modbus TCP Communication protocol ...
Page 112: ...112 Modbus TCP Diagnostics ...
Page 114: ......
Page 154: ...154 EtherNet IP Start up 3 In the Select Module window select ETHERNET MODULE ...
Page 180: ...180 EtherNet IP Communication profiles ...
Page 246: ......
Page 304: ...304 PROFINET IO Start up ...
Page 374: ...374 AppendixA PROFIdriveparametersandI MrecordsofPROFINETIO ...