Danfoss WattNode Installation guide

Installation Guide

WattNode

50/60 Hz

-30 – 50°C (-22°F to 131°F)

L × W × H: 155 mm × 85 mm × 38 mm (6.1” × 3.35” × 1.5”)

Mounting holes:

Ø5.1mm (0.200”)

CT: 0,333 V A.C. at rated current

Code Electrical Service Type (Load type)

Single Phase 2-wire with neutral 96 - 138 n.a. N and фA

080Z2144

080Z2146

Single Phase 3-wire with neutral 96 - 138 166 - 276 N and фA

Three Phase 4-wire wye (star) with neutral 96 - 138 166 - 276 N and фA

Single Phase 2-wire with neutral 184 - 264 n.a. N and фA

Three Phase 4-wire wye (star) with neutral 184 - 264 320 - 460 N and фA

Line-to-Neutral (V A.C.)

Line-to-Line (V A.C.)

Meter Powered by

Single Phase 2-wire with neutral Single Phase 3-wire with neutral Three Phase 4-wire Wye (star) with neutral

Modbus address

DIP Switch 1 2 3 4 5 6 7

Up (1) Value 1 2 4 8 16 32 64

Address Examples

1 1, Up 0, Down 0, Down 0, Down 0, Down 0, Down 0, Down

1+2+4 = 7 1, Up 1, Up 1, Up 0, Down 0, Down 0, Down 0, Down

4+16 = 20 0, Down 0, Down 1, Up 0, Down 1, Up 0, Down 0, Down

1+2+16+32+64 =115 1, Up 1, Up 0, Down 0, Down 1, Up 1, Up 1, Up

Power on and o the WattNode after setting the Modbus address

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Modbus integration with the AK-SM 800

Step 1: Set the Modbus address (see above, remember to power-cycle the WattNode) Step 2: Perform a network scan from the AK-SM 800* *For more information about data communication see document RC8AC and the AK-SM 800 manual. Pay special attention to the AK-SM 800 manual if devices with a dierent baud rate than 38.400 baud are connected to the AK-SM 800, e.g. the variable speed compressor type SLV.

Phase Status LED

All/ Single phase

All Red, Yellow,

All Red / Green

All OFF WattNode not operating.

All Red for 3 seconds

Single Green No power but line voltage is

Single OFF No voltage on this phase

Single Red continuous

LED Indication Description

Green for 3 x 1 second

continuous ashing

or more

ashing

Power up sequence

Overvoltage warning.

Line voltage too high. DISCONNECT power immediately!

Check that the wiring and voltages are correct

WattNode Error. If you see this happen repeatedly, replace the meter

present on this phase

Negative power on this phase (Reversed CT’s, swapped CT wires or CT not matching line voltage phase)

Precautions

Modbus Com LED

LED Indication Description

Green ash Valid packet for this device

Yellow ash Valid packets for dierent device

Red for 1 second Invalid packet (bad baud rate,

Red / Yellow continuous ashing

Red Address set to 0 (zero)

noise, ...)

Possible address conict (two devices with same address)

1.1 Only qualied personnel or licensed electricians should install the WattNode meter. The mains voltages can be lethal!

1.2 Follow all applicable local and national electrical and safety codes.

1.3 The terminal block screws are not insulated. Do not contact metal tools to the screw terminals if the circuit is live!

1.4 Verify that circuit voltages and currents are within the proper range for the meter model.

1.5 Use only UL listed or UL recognized current transformers (CTs) with built-in burden resistors, that generate 0.333 Vac (333 millivolts AC) at rated current. Do not use current out-

put (ratio) CTs such as 1 amp or 5 amp output CTs: they will destroy the meter and may create a shock hazard.

1.6 Protect the line voltage conductors to the meter with fuses or circuit breakers (not needed for the neutral or ground wires).

1.7 Equipment must be disconnected from the HAZARDOUS LIVE voltages before access.

1.8 If the meter is not installed correctly, the safety protections may be impaired.

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