Program features 47
to
to apply the new
parameter settings. The parameter will automatically revert to
7. Check that
is showing the correct interface module type
(
). 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 (
) with the measured
speed (
01.04 Encoder 1 speed filtered
). If the values are the same, set the
encoder as the feedback source (
).
10. Specify the action taken in case the feedback signal is lost (
).
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:
•
(
= 1)
•
(
= 1)
(No gear is needed as the encoder is mounted directly on the motor shaft.)
•
•
(
= 1)
•
= 50
The cable drum turns one revolution per 50 revolutions of the motor shaft.
•
(
= 1)
•
(
= 1)
(These parameters need not be changed as position estimate is not being used
for feedback.)
•
= 7
•
= 10
The load moves 70 centimeters, ie. 7/10 of a meter, per one revolution of the
cable drum.
The load height in meters can be read from
, while
displays the rotational speed of the cable drum.
Jogging
The jogging function enables the use of a momentary switch to briefly rotate the
motor. The jogging function is typically used during servicing or commissioning to
control the machinery locally.
Summary of Contents for ACS860
Page 1: ... ABB INDUSTRIAL DRIVES ACS860 primary control program Firmware manual ...
Page 4: ......
Page 10: ...10 Table of contents ...
Page 18: ...18 Using the control panel ...
Page 24: ...24 Control locations and operating modes ...
Page 54: ...54 Program features ...
Page 78: ...78 Program features ...
Page 90: ...90 Application macros ...
Page 342: ...342 Additional parameter data ...
Page 380: ...380 Fault tracing ...
Page 381: ...Fault tracing 381 ...
Page 382: ...382 Fault tracing ...
Page 436: ...436 Control chain diagrams ...
