ABB ACS560 - Page 244

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 f req uency 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.
1Direction
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