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Appendix A - ACS380 in crane applications 537
A time delay (
44.204
) defines the time during which the torque reference (
44.203
) is
active and completes the electrical and mechanical tests of the crane system.
Unsuccessful torque proving trips the drive (
D100
).
See also the
Timing diagram
on page
536
.
Settings
Parameters:
44.202
Torque proving
,
44.203
Torque proving reference
,
44.204
Brake
system check time
Signals:
09.01
Crane SW1
,
09.03
Crane FW1
Warnings: -
Faults:
D100
Torque prove
Brake system checks – Brake slip
The Brake slip function examines the system for brake slips while the control program
performs Torque proving with the brake closed. If the motor actual speed exceeds
speed limit (
44.205
) during a check time (
44.204
), and stays there for longer than a
time delay (
44.206
), the drive trips on a fault (
D101
).
See,
Timing diagram
on page
536
.
Note
: In scalar motor control or in trolley and long travel movements, disable Torque
proving and Brake open torque. Select the following:
•
44.09
Brake open torque source
=
Zero
•
44.10
Brake open torque
= 0%
•
44.202
Torque proving
=
Not selected
Settings
Parameters:
44.204
Brake system check time
,
44.205
Brake slip speed limit
,
44.206
Brake slip fault delay
Signals:
09.03
Crane FW1
Warnings: -
Faults:
D101
Brake slip
ACS380 FW.book Page 537 Friday, May 4, 2018 4:18 PM
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