ABB ACS550-01 User Manual page 76

76
5 = 3 ,4 ( ) – Defines digital inputs as the speed reference source (motor potentiometer control).
DI U D R
• Digital input 3 increases the speed (the
DI
• Digital input 4 decreases the speed (the
DI
• A Stop command resets the reference to zero (the
• Parameter 2205
6 = 3 ,4 – Same as above (
DI U D
• A Stop command does not reset the reference to zero. The reference is stored.
• When the drive restarts, the motor ramps up (at the selected acceleration rate) to the stored reference.
7 = 5 ,6 – Same as above (
DI U D
8 = – Defines the fieldbus as the reference source.
COMM
9 = + 1 – Defines a fieldbus and analog input 1 (
COMM AI
Reference Correction below.
10 = * 1 – Defines a fieldbus and analog input 1 (
COMM AI
Reference Correction below.
11 = 3 , 4 ( ) – Same as
DI U D RNC
• Changing the control source (
12 = 3 ,4 ( ) – Same as
DI U D NC
• Changing the control source (
13 = 5 ,6 ( ) – Same as
DI U D NC
• Changing the control source (
14 = 1+ 2 – Defines an analog input 1 (
AI AI
Analog Input Reference Correction below.
15 = 1* 2 – Defines an analog input 1 (
AI AI
Analog Input Reference Correction below.
16 = 1- 2 – Defines an analog input 1 (
AI AI
Analog Input Reference Correction below.
17 = 1/ 2 – Defines an analog input 1 (
AI AI
Analog Input Reference Correction below.
Analog Input Reference Correction
Parameter values 9, 10, and 14...17 use the formula in the following table.
Value AI reference is calculated as following:
Setting
C + B C value + (B value - 50% of reference value)
C * B C value * (B value / 50% of reference value)
C - B (C value + 50% of reference value) - B value
C / B (C value * 50% of reference value) / B value
Where:
• C = Main Reference value
( = for values 9, 10 and
COMM
= 1 for values 14...17).
AI
• B = Correcting reference
( = 1 for values 9, 10 and
AI
= 2 for values 14...17).
AI
Example:
The figure shows the reference source curves for value
settings 9, 10, and 14...17, where:
• C = 25%.
• P 4012
SETPOINT MIN
• P 4013
SETPOINT MAX
• B varies along the horizontal axis.
Start-Up
U
D
2 controls the reference signal's rate of change.
ACCELER TIME
3 ,4 ( )), except:
DI U D R
3 ,4 ), except that
DI U D
3 ,4 ( ) above, except that:
DI U D R
1 to 2,
EXT EXT
3 ,4 above, except that:
DI U D
1 to 2,
EXT EXT
5 ,6 above, except that:
DI U D
1 to 2,
EXT EXT
1) and analog input 2 (
AI
1) and analog input 2 (
AI
1) and analog input 2 (
AI
1) and analog input 2 (
AI
= 0.
= 0.
stands for "up").
stands for "down").
stands for "reset").
R
5 and 6 are the digital inputs used.
DI DI
1) combination as the reference source. See Analog Input
AI
1) combination as the reference source. See Analog Input
AI
2 to 1, to ) does not copy the reference.
EXT EXT LOC REM
2 to 1, to ) does not copy the reference.
EXT EXT LOC REM
2 to 1, to ) does not copy the reference.
EXT EXT LOC REM
2) combination as the reference source. See
AI
2) combination as the reference source. See
AI
2) combination as the reference source. See
AI
2) combination as the reference source. See
AI
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0
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ACS550 User's Manual
17 (/)
9, 14 (+)
10, 15 (*)
16 (-)
100%
B