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)	Line-to-Neutral	Line-to-Line	Meter Powered by
Code	Electrical Service Type (Load type)	(V A.C.)	(V A.C.)	Meter Powered by
		(V A.C.)	(V A.C.)

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

080Z2144	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

080Z2146	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
	Three Phase 4-wire wye (star) with neutral	184 - 264	320 - 460	N and фA

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

Modbus address
Modbus address	DIP Switch	1	2	3	4	5	6	7
	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 off 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 different 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/	LED Indication	Description
Single
phase

All	Red, Yellow,	Power up sequence
	Green for 3 x 1
	second

All	Red / Green	Overvoltage warning.
	continuous	Line voltage too high.
	flashing	DISCONNECT power immediately!

All	OFF	WattNode not operating.
		Check that the wiring and voltages
		are correct

All	Red for 3 seconds	WattNode Error.
	or more	If you see this happen repeatedly,
		replace the meter

Single	Green	No power but line voltage is
		present on this phase

Single	OFF	No voltage on this phase

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

Modbus Com LED

LED Indication	Description

Green flash	Valid packet for this device

Yellow flash	Valid packets for different device

Red for 1 second	Invalid packet (bad baud rate,
	noise, ...)

Red / Yellow	Possible address conflict (two
continuous flashing	devices with same address)

Red	Address set to 0 (zero)

Precautions

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

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

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

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

1.5Use 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 output (ratio) CTs such as 1 amp or 5 amp output CTs: they will destroy the meter and may create a shock hazard.

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

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

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

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