Parker ac890 - Page 455

D-59 Programming
890CS Common Bus Supply - Frames B & D; 890CD Common Bus Drive and 890SD Standalone Drive - Frames B, C & D
FLYCATCHING
SETUP::MOTOR CONTROL::FLYCATCHING
Designed for all Motor Control Modes.
This block performs a directional speed search. It allows the Drive to seamlessly catch a spinning motor before controlling the
motor to the desired setpoint. This is especially useful for large inertia fan loads, where drafts in building air ducts can cause a
fan to `windmill’.
Parameter Descriptions
VHZ ENABLE
PREF: 69.01
Default: FALSE
Range: FALSE / TRUE
Enables flycatching in Volts/Hz Control mode when TRUE.
VECTOR ENABLE
PREF: 69.15
Default: FALSE
Range: FALSE / TRUE
Enables flycatching in Vector Control mode when TRUE.
START MODE
PREF: 69.02
Default: 0
Range: See below
The mode of operation for the flycatching sequence software.
Enumerated Value : Start Mode
0 : ALWAYS
1 : TRIP OR POWERUP
2 : TRIP
SEARCH MODE
PREF: 69.03
Default: 0
Range: See below
The type of speed search carried out by the flycatching sequence.
Enumerated Value : Search Mode
0 : BIDIRECTIONAL
1 : UNIDIRECTIONAL