ABB ACS150 series

Actual signals and parameters
104
1
Par. 2502 = 18 Hz
2
Par. 2503 = 23 Hz
3
Par. 2504 = 46 Hz
4
Par. 2505 = 52 Hz
Parameters in the Long parameter mode
Index
Name/Selection
Description
Def
25 CRITICAL SPEEDS
Speed bands within which the drive is not allowed to operate.
A Critical Speeds function is available for applications where it is necessary
to avoid certain motor speeds or speed bands because of for example,
mechanical resonance problems. The user can define three critical speeds or
speed bands.
2501 CRIT SPEED SEL
Activates/deactivates the critical speeds function. The critical speed function
avoids specific speed ranges.
Example: A fan has vibrations in the range of 18 to 23 Hz and 46 to 52 Hz. To
make the drive to jump over the vibration speed ranges:
- Activate the critical speeds function.
- Set the critical speed ranges as in the figure below.
f
output
(Hz)
52
46
23
18
f
reference
(Hz)
1 2 3 4
0 = OFF
0 = OFF
Inactive
1 = ON
Active
2502 CRIT SPEED 1 LO
Defines the minimum limit for critical speed/frequency range 1.
0.0 Hz
0.0…500.0 Hz
Limit. The value cannot be above the maximum (parameter 2503 CRIT
SPEED 1 HI).
2503 CRIT SPEED 1 HI
Defines the maximum limit for critical speed/frequency range 1.
0.0 Hz
0.0…500.0 Hz
Limit. The value cannot be below the minimum (parameter 2502 CRIT
SPEED 1 LO).
2504 CRIT SPEED 2 LO
See parameter 2502 CRIT SPEED 1 LO.
0.0 Hz
0.0…500.0 Hz
See parameter 2502.
2505 CRIT SPEED 2 HI
See parameter 2503 CRIT SPEED 1 HI.
0.0 Hz
0.0…500.0 Hz
See parameter 2503.
2506 CRIT SPEED 3 LO
See parameter 2502 CRIT SPEED 1 LO.
0.0 Hz
0.0…500.0 Hz
See parameter 2502.
2507 CRIT SPEED 3 HI
See parameter 2503 CRIT SPEED 1 HI.
0.0 Hz
0.0…500.0 Hz
See parameter 2503.