Delta CFP2000 Series User Manual page 424

Frequency when Switching Motors at Fixed Quantity Circulation (Hz)

Settings 0.0–599.00 Hz
Sets the drive's output frequency at which the system prepares to switch motors.

Action when Fixed Quantity Circulation Breaks Down
Settings 0: Turn off all output
Frequency for Stopping Auxiliary Motor (Hz)

Settings 0.00–599.00 Hz
 When the output frequency is smaller than the Pr.12-08 and remains at the time setting for
Pr.12-04, the CFP2000 shuts down the motors one by one.
 Fixed Quantity Control with PID
In this mode, the CFP2000 can control up to eight motors to increase flow quantity and pressure
range control.
The CFP2000 connects directly to a main motor while the rest of the motors use mains electricity
and are controlled by a relay. When controlling flow quantity, the motors are in parallel connection.
When controlling pressure range, the motors are in series connection.
To increase the flow quantity or pressure range, the CFP2000 increases the main motor's
pressure from 0 Hz to the largest operating frequency. If necessary, the CFP2000 switches the
motors to use mains electricity in sequence. See sequential diagram 12-8 and 12-9.
1: Motors powered by mains electricity continues to operate
Chapter 12 Description of Parameter SettingsCFP2000
12.1-12-9
Default: 60.00
Default: 0
Default: 0.00