ABB ACS880-x04, Руководство по прошивке

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Program features 53
Configuration of HTL encoder motor feedback
1. Specify the type of the encoder interface module (parameter 91.11 Module 1 type
= FEN-31 ) and the slot the module is installed into ( 91.12 Module 1 location ).
2. Specify the type of the encoder ( 92.01 Encoder 1 type = HTL ). The parameter
listing will be re-read from the drive after the value is changed.
3. Specify the interface module that the encoder is connected to ( 92.02 Encoder 1
source = Module 1 ).
4. Set the number of pulses according to encoder nameplate
( 92.10 Pulses/revolution ).
5. If the encoder rotates at a different speed to the motor (ie. is not mounted directly
on the motor shaft), enter the gear ratio in 90.43 Motor gear numerator and
90.44 Motor gear denominator .
6. Set parameter 91.10 Encoder parameter refresh to Refresh to apply the new
parameter settings. The parameter will automatically revert to Done .
7. Check that 91.02 Module 1 status is showing the correct interface module type
( FEN-31 ). Also check the status of the module; both LEDs should be glowing
green.
8. Start the motor with a reference of eg. 400 rpm.
9. Compare the estimated speed ( 01.02 Motor speed estimated ) with the measured
speed ( 01.04 Encoder 1 speed filtered ). If the values are the same, set the
encoder as the feedback source ( 90.41 Motor feedback selection = Encoder 1 ).
10. Specify the action taken in case the feedback signal is lost ( 90.45 Motor feedback
fault ).
Example 1: Using the same encoder for both load and motor feedback
The drive controls a motor used for lifting a load in a crane. An encoder attached to
the motor shaft is used as feedback for motor control. The same encoder is also used
for calculating the height of the load in the desired unit. A gear exists between the
motor shaft and the cable drum. The encoder is configured as Encoder 1 as shown in
Configuration of HTL encoder motor feedback above. In addition, the following
settings are made:
• ( 90.43 Motor gear numerator = 1)
• ( 90.44 Motor gear denominator = 1)
(No gear is needed as the encoder is mounted directly on the motor shaft.)
•
90.51 Load feedback selection = Encoder 1
• ( 90.53 Load gear numerator = 1)
• 90.54 Load gear denominator = 50
The cable drum turns one revolution per 50 revolutions of the motor shaft.
•
( 90.61 Gear numerator = 1)