Rockwell Automation GV3000/SE AC Drive ControlNet Network Communication Board, M/N 2CN3000 - Manual (Page 66)

4-4 GV3000/SE AC Drive ControlNet Network Communication Option Board
4.2.3 Using Scheduled Drive Feedback Data
The drive feedback data provides status to the programmable controller. This data is
sent over the ControlNet network as scheduled data, which is transmitted at the
configured update rate. However, the drive sends the feedback data to the option
board every 5 msec. Feedback data is sent to the option board regardless of the value
of parameter P.000.
7
Torque/Speed
Use this bit to select torque or speed regulation.
The drive must be configured for vector control
(P.048 = UEC and U.000 = 3).
0 = torque regulation
1 = speed regulation
8
Error Log Clear
Use this bit to reset the error log.
The error log resets when this bit transitions from 0 to 1.
The latched faults are not affected by this bit.
Word 1 –
Speed/Torque Reference
1, 2
— Use this word to control a speed or torque reference.
When using volts per hertz (V/Hz) control, a value of 4095
corresponds to the frequency in parameter P.004
(Maximum Speed).
When using vector speed regulation, a value of 4095
corresponds to the speed in parameter U.017.
When using torque regulation, a value of 4095 corresponds
to 150% of rated torque.
Word 2 –
Trim Reference
1
— Use this word to control the trim reference value. The
scaling for the trim reference is the same as the speed
reference. This word is not used for torque regulation.
Word 3 –
Inertia Compensation
1
— Use this word to provide the inertia compensation input to
the speed loop. To to use this data, you must set bit 1 of
parameter P.030.
Word 4 –
Speed PI High Limit
1
— Use this word to modify the speed loop PI high limit. The
output of the speed PI will not be greater than this value. A
value of 4095 represents 150% of the rated torque. To use
this data, set bit 2 of parameter P.030.
Word 5 –
Speed PI Low Limit
2
— Use this word to modify the speed loop PI low limit. The
output of the speed PI will not be less than this value. A
value of -4095 represents -150% of the rated torque. To use
this data, set bit 2 of parameter P.030.
1
If the drive is configured as a speed regulator, the speed reference, trim reference, inertia compensation, and PI limits are used in the
speed loop, which is evaluated every 5 msec.
2 If the drive is configured as only a torque regulator, the torque reference is used in the torque loop, which runs every 500 µsec. The fastest
network update time is 2 msec, so in torque mode the drive uses the same torque reference value a minimum of four times.
Table 4.3 – Scheduled Drive Reference Data (Continued)
Word: Bit: Description: