ABB ACS880 PCP User Manual

Parameters 231
28.51 Critical frequency
function
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 59).
00b
0000b…0011b Critical frequencies configuration word. 1 = 1
28.52 Critical frequency 1
low
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.
0.00 Hz
-500.00…500.00 Hz Low limit for critical frequency 1. See par.
46.02
28.53 Critical frequency 1
high
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.
0.00 Hz
-500.00…500.00 Hz High limit for critical frequency 1. See par.
46.02
28.54 Critical frequency 2
low
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.
0.00 Hz
-500.00…500.00 Hz Low limit for critical frequency 2. See par.
46.02
28.55 Critical frequency 2
high
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.
0.00 Hz
-500.00…500.00 Hz High limit for critical frequency 2. See par.
46.02
28.56 Critical frequency 3
low
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 high.
0.00 Hz
-500.00…500.00 Hz Low limit for critical frequency 3. See par.
46.02
28.57 Critical frequency 3
high
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 low.
0.00 Hz
-500.00…500.00 Hz High limit for critical frequency 3. See par.
46.02
No. Name/Value Description Def/
FbEq16
Bit Name Information
0 Enable 1 = Enable: Critical frequencies enabled.
0 = Disable: Critical frequencies disabled.
1 Sign mode 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.

ABB ACS880 PCP Specifications

General

Output current	Up to 5200 A
Input voltage	380-690 V
Power range	5600 kW
Cooling method	Air or liquid
Protection class	IP21, IP54
Communication interfaces	Ethernet, CANopen