ABB ACS880 Series, Firmware Manual

Page: 352 / 764

Def / Type
FbEq 16b / 32b Description Name / Range /
Selection No.
- / real32 Defines 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 safe 28.41
- / - Safe frequency reference. For scaling, see parameter
46.2 .
-598.00 ... 598.00 Hz
- / uint16 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 (page 85) .
Critical frequency
function 28.51
1 = Enable: Critical frequencies enabled.
0 = Disable: Critical frequencies disabled. Enable b0
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 mode b1
Reserved b2…15
1 = 1 0000h…FFFFh
0.00 Hz / real32 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 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 / real32 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 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 / real32 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 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 / real32 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 low .
Critical frequency 2
high 28.55
352 Parameters