CHAPTER 12: DESCRIPTION OF PARAMETER SETTINGS
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When the drive’s output frequency reaches the setting value of Pr10-06, the system will start preparing to switch motors.
When the output frequency is smaller than the setting value of Pr10-08 and remains at the time set ii ng of Pr10-04, motors will be
shut down one by one.
Fixed quantity control with PID
In this mode, VFD CORE can control up to 8 motors to increase controlling flow quantity and pressure range.
VFD CORE connects directly to a main motor while the rest of motors are using mains electricity and controlled by a relay. When
controlling flow quantity, motors will be in parallel connection. When controlling pressure range, motors will be in series
connection
If need to increase flow quantity or pressure range, VFD CORE will increase the main motor’s pressure from 0Hz to the largest
operating frequency. If necessary, VFD CORE will switch in sequence the motors to use mains electricity. See two sequential
diagrams below.
10 - 06 Frequency when switching motors at fixed quantity circulation (Hz)
Factory Setting: 6000
Settings 0.0 to 600.00 hz
10 - 07 Action to do when Fixed Quantity Circulation breaks down
Factory Setting: 0
Settings 0: Turn off all output
1: Motors powered by mains electricity continues to operate
10 - 08 Frequency when stopping auxiliary motor (Hz)
Factory Setting: 0
Settings 0.00 to 600.00 hz
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