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542 Appendix A - ACS380 in crane applications
Settings
Parameters:
76.31
Motor speed match
Signals:
09.01
Crane SW1
,
09.03
Crane FW1
Warnings:
D200
Brake slip at standstill2
Faults:
D105
Speed match
Crane warning masking
The Crane warning masking function masks the predefined crane control warnings.
The masked warnings do not appear in the event logger or on the control panel
Parameter:
31.205
Crane warning masking
Signals:
09.01
Crane SW1
Warnings: -
Faults: -
Dead-band function
The accuracy of an analog input signal near zero is poor. With the Dead-band
function, you can freeze the speed reference for a defined band area (that is, dead
band) or ignore a low speed reference caused by possible crane vibrations on the
joystick.
The function re-scales the analog signal based on the dead-band settings, and then
calculates a new speed reference.
Example
In the example:
• Analog input reference (AI1) comes from the joystick:
- Par.
12.18
AI1 max
= 10 V
- Par.
12.17
AI1 min
= 0 V
- Par.
12.20
AI1 scaled at AI1 max
= 1500
• 0…5 V gives the reverse speed reference.
• 5 V is the joystick zero position.
• 5…10 V gives the forward speed reference.
ACS380 FW.book Page 542 Friday, May 4, 2018 4:18 PM
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