ABB ACS560, Firmware Manual

Page: 244 / 514

244 Parameters
Mul (ref1 × ref2) The multiplication of the reference sources is used as
frequency reference 1. 3
Min (ref1, ref2) The smaller of the reference sources is used as frequency
reference 1. 4
Max (ref1, ref2) The greater of the reference sources is used as frequency
reference 1. 5
28.21 Constant frequency
function Determines how constant frequencies are selected, and
whether the rotation direction signal is considered or not
when applying a constant frequency. 0b0001
0b000...0b1111 Constant frequency configuration word. 1 = 1
No. Name/Value Description Def/FbEq16
Bit Name Information
0 Const freq
mode 1 = Packed: 7 constant frequencies are selectable using the three
sources defined by parameters
28.22 , 28.23 and 28.24 .
0 = Separate: Constant frequencies 1, 2 and 3 are separately activated
by the sources defined by parameters
28.22 , 28.23 and 28.24
respectively. In case of conflict, the constant frequency with the smaller
number takes priority.
1 Direction
enable 1 = Start dir: To determine running direction for a constant speed, the
sign of the constant speed setting (parameters
22.26 … 22.32 ) is
multiplied by the direction signal (forward: +1, reverse: -1). This
effectively allows the drive to have 14 (7 forward, 7 reverse) constant
speeds if all values in
22.26 … 22.32 are positive.
WARNING: 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
22.26 … 22.32 ).
2 Frequency step Frequency step: 1 = Freq step enable; 0 = Freq step disable
3…15 Reserved