Critical Speeds; Settings; Constant Speeds - ABB ACS310 User Manual

Critical Speeds

A Critical Speeds function is available for applications where it is necessary to avoid
certain motor speeds (drive output frequencies) or speed bands (output frequency
bands) because of eg mechanical resonance problems. The user can define three
critical frequencies or frequency bands.

Settings

Parameter group

Constant speeds

It is possible to define seven positive constant speeds. Constant speeds are selected
with digital inputs. Constant speed activation overrides the external speed reference.
Constant speed selections are ignored if
• PID reference is being followed, or
• drive is in local control mode.
This function operates on a 2 ms time level.
Settings
Parameter group
Constant speed 7
parameter group
30 FAULT
Phone: 800.894.0412 - Fax: 888.723.4773 - Web: www.clrwtr.com - Email: info@clrwtr.com
25 CRITICAL SPEEDS
12 CONSTANT SPEEDS
(1208 CONST SPEED 7) is also used for fault functions. See
FUNCTIONS.
Program features 127