IV-2-2. Application
It is special appendix for multiple pumps, which run with PI7000 family inverter to control the
multiple pumps water supply system effectively.
IV-2-3. Operation and connection notice:
※ If it is power frequency motor, probable thermal relay must be used to protect motor.
※ AC contactor with machinery chain equipment should be used between the power frequency
bypass and inverter output of aside the motor, lock logically on the electri control circuit to
avoid the short circuit of the power frequency and inverter output which damage the inverter
and equipments.
※ The phase order of the power frequency to the motor should be the same with the phase
order of the inverter output to avoid the motor reverse. Please confirm the phase order and
operate.
※ When wiring the control signal of the inverter, please leave it away with the driving line, and
do not make them in the same wire, otherwise it will lead wrong action.
※ Screen cable is used for Pressure set signal and pressure feedback signal
IV-2-4. Dimension
1. Dimension of water supply control card
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