ABB ACS560, Firmware Manual

Page: 220 / 514

220 Parameters
22.20 Ext2 speed function Selects a mathematical function between the reference
sources selected by parameters
22.18 Ext2 speed ref1 and
22.19 Ext2 speed ref2 . See diagram at 22.18 Ext2 speed
ref1 .
Ref1
Ref1 Signal selected by Ext2 speed ref1 is used as speed
reference 1 as such (no function applied).
0
Add (ref1 + ref2) The sum of the reference sources is used as speed reference
1. 1
Sub (ref1 - ref2) The subtraction ([ 22.11 Ext1 speed ref1 ] - [ 22.12 Ext1 speed
ref2 ]) of the reference sources is used as speed reference 1.
2
Mul (ref1 × ref2) The multiplication of the reference sources is used as speed
reference 1. 3
Min (ref1, ref2) The smaller of the reference sources is used as speed
reference 1. 4
Max (ref1, ref2) The greater of the reference sources is used as speed
reference 1. 5
22.21 Constant speed
function Determines how constant speeds are selected, and whether
the rotation direction signal is considered or not when
applying a constant speed. 0b0001
0b0000...0b1111 Constant speed configuration word. 1 = 1
No. Name/Value Description Def/FbEq16
Bit Name Information
0 Constant speed
mode 1 = Packed: 7 constant speeds are selectable using the three sources
defined by parameters
22.22 , 22.23 and 22.24 .
0 = Separate: Constant speeds 1, 2 and 3 are separately activated by
the sources defined by parameters
22.22 , 22.23 and 22.24 respectively.
In case of conflict, the constant speed 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…15 Reserved