ABB DriveIT ACH550-01 User Manual page 316

Code Description
8123 PFA ENABLE
Selects PFA control. When enabled, PFA control:
• Switches in, or out, auxiliary constant speed motors as output
demand increases or decreases. Parameters 8109
to 8114
output frequency.
• Adjusts the speed regulated motor output down, as auxiliary
motors are added, and adjusts the speed regulated motor output
up, as auxiliary motors are taken off line.
• Provides Interlock functions, if enabled.
• Requires 9904
0 =
NOT SEL
1 =
ACTIVE
312
3 define the switch points in terms of the drive
LOW FREQ
MOTOR CTRL MODE
– Disables PFA control.
– Enables PFA control.
ACH550 User's Manual
Range
0...1
= 3
SCALAR
Parameter listing and descriptions
START FREQ
.
1