6. Control Functions and Parameter Settings
6-49
B44-0~3
Multipump control
Multi-pump control refers to operating up to six pumps in one water system, one pump is
variable speed controlled and up to five more controlled ON/OFF by the digital outputs
provided in the VAT2000. The water pressure in the pipe system is controlled to be constant
according the setting input in the VAT2000´s PID.
As standard the drive provide control up to 3 ON/OFF controlled pumps. By using optional card
U2KV23RYO, then operation is allowed up to 5 pumps
PSO1
U,V,W
Speed controlled
Pump
ON / OFF Pump 1
ON / OFF Pump 2
ON / OFF Pump 3
ON / OFF Pump 4
ON / OFF Pump 5
Pressure transducer
PSO2
PSO3
PSO4
PSO5
0-10V or 4-20mAPressure feedback (AUX or FSI)
U2KV23RYO
PID
FSV or FSI
VAT2000
Pressure
setting
Converter
Example of system configuration
(when operating five ON/OFF control pumps)
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