ABB ACS880 - Page 352

Def / Type
FbEq 16b / 32b
DescriptionName / Range /
Selection
No.
- / real32Defines a safe frequency reference value that is used
with supervision functions such as
• 12.3 AI supervision function
• 49.5 Communication loss action
• 50.2 FBA A comm loss func
• 50.32 FBA B comm loss func
• 58.14 Communication loss action.
Frequency ref safe28.41
- / -Safe frequency reference. For scaling, see parameter
46.2.
-598.00 ... 598.00 Hz
- / uint16Enables/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 (page 85).
Critical frequency
function
28.51
1 = Enable: Critical frequencies enabled.
0 = Disable: Critical frequencies disabled.
Enableb0
1 = According to par: The signs of parameters
28.52…28.57 are taken into account.
0 = Absolute: Parameters 28.52…28.57 are handled as
absolute values.
Each range is effective in both directions of rotation.
Sign modeb1
Reservedb2…15
1 = 10000h…FFFFh
0.00 Hz / real32Defines 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 high.
Critical frequency 1
low
28.52
- / -Low limit for critical frequency 1. For scaling, see
parameter 46.2.
-598.00 ... 598.00 Hz
0.00 Hz / real32Defines 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 low.
Critical frequency 1
high
28.53
- / -High limit for critical frequency 1. For scaling, see
parameter 46.2.
-598.00 ... 598.00 Hz
0.00 Hz / real32Defines 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 high.
Critical frequency 2
low
28.54
- / -Low limit for critical frequency 2. For scaling, see
parameter 46.2.
-598.00 ... 598.00 Hz
0.00 Hz / real32Defines 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 low.
Critical frequency 2
high
28.55
352 Parameters