ABB ACH550-01 User Manual page 321

ACH550 User's Manual
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
8114
LOW FREQ
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 = – Disables PFA control.
NOT SEL
1 = – Enables PFA control.
ACTIVE
Parameter listing and descriptions
3 define the switch points in terms of the drive output
= 3 (
MOTOR CTRL MODE
Range
0...1
START FREQ
: ).
SCALAR FREQ
1 to
309