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Customer Network Interface
RJ-45 CAT5 Shielded
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Main Control Disconnect (DS1) is used to disconnect all power to the unit.
Run customer supplied power (480VAC/3PH) to DS1 according to the system schematic (fi g, 4.1.1 - 3).
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NOTE: Verify a Phase Rotation before making 480VAC connection to DS1 (L1= BRW, L2=ORG, L3=YEL)
Motor Protection Circuit Breaker UL489 (M1, M2) – Individually sized for each motor. These provide short-circuit
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protection to the motor as well as thermal overload protection.
DC Power Supply (PWS1) – Converts 480 VAC to 24 VDC for PLC, HMI, TDS sensor, and control circuit components.
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PLC Controller – Executes a program that controls the sequence and times of the operation through I/O (inputs and
outputs).
Human Machine Interface (HMI) – Executes a graphical interface program that communicates with the PLC to let the
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operator know the state of the equipment.
Main Disconnect Switch - Electrical connection point for the 480 VAC 3-phase main power.
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Control Relay (CR1) – Land the 24V request for RO water signal from the tunnel to this component.
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fi g. 4.1.1 - 2 - Customer network interface
fi g. 4.1.1 - 3 - 480VAC/3PH connection
Customer Supply
480VAC/3PH
Installation
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