ABB ACS580 Firmware Manual page 237

No. Name/Value
28.51 Critical frequency
function
Bit Name
0 Crit freq
1 Sign mode
0000b...0011b
28.52 Critical frequency 1
low
-500.00...500.00
Hz
28.53 Critical frequency 1
high
-500.00...500.00
Hz
28.54 Critical frequency 2
low
-500.00...500.00
Hz
28.55 Critical frequency 2
high
-500.00...500.00
Hz
28.56 Critical frequency 3
low
-500.00...500.00
Hz
28.57 Critical frequency 3
high
-500.00...500.00
Hz
28.71 Freq ramp set
selection
Acc/Dec time 1
Description
Enables/disables the critical frequencies function. Also
determines whether the specified ranges are effective in both
rotating directions or not.
See also section Critical speeds/frequencies
Information
1 = Enable: Critical frequencies enabled.
0 = Disable: Critical frequencies disabled.
1 = According to par: The signs of parameters
into account.
0 = Absolute: Parameters
Each range is effective in both directions of rotation.
Critical frequencies configuration word.
Defines the low limit for critical frequency 1.
Note: This value must be less than or equal to the value of
28.53 Critical frequency 1
Low limit for critical frequency 1.
Defines the high limit for critical frequency 1.
Note: This value must be greater than or equal to the value of
28.52 Critical frequency 1
High limit for critical frequency 1.
Defines the low limit for critical frequency 2.
Note: This value must be less than or equal to the value of
28.55 Critical frequency 2
Low limit for critical frequency 2.
Defines the high limit for critical frequency 2.
Note: This value must be greater than or equal to the value of
28.54 Critical frequency 2
High limit for critical frequency 2.
Defines the low limit for critical frequency 3.
Note: This value must be less than or equal to the value of
28.57 Critical frequency 3
Low limit for critical frequency 3.
Defines the high limit for critical frequency 3.
Note: This value must be greater than or equal to the value of
28.56 Critical frequency 3
High limit for critical frequency 3.
Selects a source that switches between the two sets of
acceleration/deceleration times defined by parameters
28.72....
0 = Acceleration time 1 and deceleration time 1 are in force
1 = Acceleration time 2 and deceleration time 2 are in force
0.
(page 97).
28.52...28.57 are handled as absolute values.
high.
low.
high.
low.
high.
low.
Parameters 233
Def/FbEq16
0000b
28.52...28.57 are taken
1 = 1
0.00 Hz
See par.
46.02
0.00 Hz
See par.
46.02
0.00 Hz
See par.
46.02
0.00 Hz
See par.
46.02
0.00 Hz
See par.
46.02
0.00 Hz
See par.
46.02
DI5
0