Current Transformer Connections

Installed around the existing power wiring being monitored.

Must be in order with the voltage connections

CT1 installed on Phase A(L1)

CT2 installed on Phase B(L2)

CT3 installed on Phase C(L3)

MODBUS Connection

MODBUS +/- and common terminals wire to D1+/D1- and common on the Turntide Supervisor

Communication DIP-Switches

Switches 4 and 8 will always be in the UP position and the other switches will be in the DOWN position.

Switch 4 being UP represents device ID #8.

Switch 8 being UP represents 19200 baud rate.

Line Voltage Connections

Terminals A, B, & C represent L1, L2, and L3, respectively.

The power wiring should come from the same voltage source that serves the existing motor.

Make sure to ground the device to the unit ground block

Current Transformer

One current transformer (CT) per phase. Make sure that the arrow on the CT label is pointing towards the power source and AWAY from the motor.

Verify that the WattNode is properly grounded to the unit. Verify terminals for phases A, B, and C to the unit power distribution block.

Verify that the current transformers (CTs) are installed properly:

• Terminal CT1 on WattNode corresponds with CT located on existing motor power L1
• Terminal CT2 on WattNode corresponds with CT located on existing motor power L2
• Terminal CT3 on WattNode corresponds with CT located on existing motor power L3
• Verify that the arrows on the CTs are facing away from the motor and towards the power source. If one of the CTs isn’t operating normally, replace the CT.

Verify the Modbus connections.

Positive, Negative, and Common on the WattNode must wire to Positive, Negative, and Common on the Turntide Supervisor.

Check the Modbus cable for polarity:

• WattNode A- to Supervisor D1-
• WattNode B+ to Supervisor D1+
• WattNode C to Supervisor COM

Confirm the WattNode DIP switch configuration. Make sure Modbus address and baud rate are correct.

• Switches 4 and 8 DIP are in the UP position – ON
• All other switches in the DOWN position - OFF
• Switches 1-7 set the device address
• Switch 8 sets the baud rate (S8 down=9600, S8 up=19200)

Do a tug test on all the 20 wiring connections made when installing the WattNode to make sure they are secure.

Verify the CTs are wired to the WattNode with the white wire on top.

When power is first applied to the WattNode, verify the status the LEDs:

If the LEDs are flashing red-green- red-green continuously, then disconnect the power immediately! This indicates the line voltage is too high for the WattNode.

• If ALL the LEDs are blinking green, the motor is ON.
• If only one LED is green, the motor is OFF.
• Verify that the Com (Modbus) LED is flashing green. If other devices are connected in a daisy chain, the Modbus LED will alternate green and yellow.

If you have proper line voltage but no LED activity, you must replace the WattNode.