ABB ACS850-04 series, Firmware Manual

Page: 168 / 296

168 Parameters
-30000 … 30000
rpm High limit for critical speed 2. 1 = 1 rpm
25.06 Crit speed3 lo Defines the low limit for critical speed range 3.
Note: This value must be less than or equal to the value of
25.07 Crit speed3 hi .
-30000 … 30000
rpm Low limit for critical speed 3. 1 = 1 rpm
25.07 Crit speed3 hi Defines the high limit for critical speed range 3.
Note: This value must be greater than or equal to the value of
25.06 Crit speed3 lo .
-30000 … 30000
rpm High limit for critical speed 3. 1 = 1 rpm
26
26 Constant speeds
Constant speed selection and values. An active constant
speed overrides the drive speed reference. See section
Constant speeds on page 59 .
26.01 Const speed func Determines how constant speeds are selected, and whether
the rotation direction signal is considered or not when
applying a constant speed.
26.02 Const speed sel1 When bit 0 of parameter 26.01 Const speed func is 0
(Separate), selects a source that activates constant speed 1.
When bit 0 of parameter
26.01 Const speed func is 1
(Packed), this parameter and parameters 26.03 Const speed
sel2 and 26.04 Const speed sel3 select three sources whose
states activate constant speeds as follows:
DI1 Digital input DI1 (as indicated by 02.01 DI status , bit 0). 1073742337
No. Name/Value Description FbEq
Bit Name Information
0 Const speed
mode 1 = Packed: 7 constant speeds are selectable using the three sources
defined by parameters
26.02 , 26.03 and 26.04 .
0 = Separate: Constant speeds 1, 2 and 3 are separately activated by
the sources defined by parameters
26.02 , 26.03 and 26.04 respectively.
In case of conflict, the constant speed with the smaller number takes
priority.
1 Dir ena 1 = Start dir: To determine running direction for a constant speed, the
sign of the constant speed setting (parameters
26.06 … 26.12 ) is
multiplied by the direction signal (forward: +1, reverse: -1). For example,
if the direction signal is reverse and the active constant speed is
negative, the drive will run in the forward direction.
0 = Accord Par: The running direction for the constant speed is
determined by the sign of the constant speed setting (parameters
26.06 … 26.12 ).
Source defined
by par.
26.02
Source defined
by par.
26.03
Source defined
by par.
26.04
Constant speed active
0 0 0 None
1 0 0 Constant speed 1
0 1 0 Constant speed 2
1 1 0 Constant speed 3
0 0 1 Constant speed 4
1 0 1 Constant speed 5
0 1 1 Constant speed 6
1 1 1 Constant speed 7