Honeywell VFD CORE - Page 237

CHAPTER 12: DESCRIPTION OF PARAMETER SETTINGS
237 63-4528—04
Fig. 9. Fixed quantity control with PID – Increasing Demand
Fig. 10. Sequence of switching motors at fixed quantity control with PID – increasing demand.
M33773
FREQUENCY
PUMP MAX
STOP PUMP
DEMAND
DEMAND
INCREASING DEMAND
PUMP 4
PUMP 3
PUMP 2
DEMAND
(FLOW OR PRESSURE)
PUMP 1
PUMP 0
OFF
OFF
OFF
TOTAL
OUTPUT
VFD CORE OPERATION
OF FIRST PUMP
BY DRIVE
OFF
AC MAINS
AC MAINS
AC MAINS
AC MAINS
M33774
FREQUENCY
TIME
PUMP 3
PUMP 2
PUMP 1
0 Hz
OFF
OFF
OFF
PUMP #0
PUMP #X
PUMP #0 BY DRIVE
AC MAINS
AC MAINS
AC MAINS
P10-05
P10-06
P10-05 P10-05