Install Manual

3
1 Precautions
1.1 Only qualified personnel or licensed electricians should install the WattNode meter. The
mains voltages of 120 to 600 Vac 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 output (ra-
tio) 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). See 3.3.1 below.
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.
1.9 Symbols
Read, understand, and follow all instructions including warnings and precautions
before installing and using the product.
Potential Shock Hazard from Dangerous High Voltage.
Functional ground; should be connected to earth ground if possible, but is not
required for safety grounding.
UL Listing mark. This shows the UL and cUL (Canadian) listing mark.
FCC Mark. This logo indicates compliance with part 15 of the FCC rules.
Complies with the regulations of the European Union for Product Safety and
Electro-Magnetic Compatibility.
• Low Voltage Directive – EN 61010-1: 2001
• EMC Directive – EN 61327: 1997 + A1/1998 + A2/2001
V~
This indicates an AC voltage.
2 Overview
Congratulations on your purchase of the WattNode
®
Modbus
®
or WattNode Revenue for Modbus
watt/watt-hour transducer (meter). The WattNode meter enables you to make power and energy
measurements within electric service panels avoiding the costly installation of subpanels and as-
sociated wiring. It is designed for use in demand side management (DSM), submetering, energy
monitoring, billing and renewable energy applications. The WattNode meter communicates on an
EIA RS-485 two-wire bus using the Modbus RTU protocol.
The WattNode Revenue version meets the ANSI C12.1 standard for revenue metering when used
with IEEE C57.13 class 0.6 current transformers, such as the Accu-CT
®
. Certain models have been
independently certified by MET Laboratories and are listed on the California Solar Initiative (CSI)
site as approved for PBI use.
2.1 Additional Literature
See the Continental Control Systems, LLC website (www.ccontrolsys.com) for product pages,
datasheets, and support pages for all WattNode meter models and current transformers. Each
WattNode model has an Operating and Reference Guide with detailed information on the avail-
able measurements and interface.