ABB ACQ580 - Page 173

Parameters 169
Control panel (ref
copied)
Panel reference (03.01 Panel reference, see page 106) for
the previous control location is used as the reference when
the control location changes if the references for the two
locations are of the same type (eg
frequency/speed/torque/PID); otherwise, the actual signal is
used as the new reference.
19
Level control Parameter 76.07 LC speed ref (output of the Level control
function).
30
Other Source selection (see Terms and abbreviations on page 100). -
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.
0001b
0000b…0011b Constant frequency configuration word. 1 = 1
No. Name/Value Description Def/FbEq16
Ext1 -> Ext2
Ext1 reference
Ext2 reference
Active reference
t
Inactive reference
Reference
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…15 Reserved