ABB ACQ580, Firmware Manual

Page: 176 / 422

172 Parameters
28.41 Frequency ref safe Defines a safe frequency reference value that is used with
supervision functions such as
•
12.03 AI supervision function
• 49.05 Communication loss action
• 50.02 FBA A comm loss func .
• 80.17 Maximum flow protection
• 80.18 Minimum flow protection
0.00 Hz
-500.00…500.00
Hz Safe frequency reference. See par.
46.02
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 51 ).
0000b
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
No. Name/Value Description Def/FbEq16
Bit Name Information
0 Crit freq 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.