Basic Components of EMK
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 +/- and common terminals wire to D1+/D1- and common on the Turntide Supervisor
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
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.
EMK Wiring Diagram
EMK Troubleshooting Steps
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:
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:
Confirm the WattNode DIP switch configuration. Make sure Modbus address and baud rate are correct.
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 you have proper line voltage but no LED activity, you must replace the WattNode.