CONTINENTAL CONTROL SYSTEMS WattNode Pulse User manual

WattNode ®Pulse
Quick Install Guide
Precautions
Read, understand, and follow all instruc-
tions in the “Installation and Operation
Manual” including all warnings, cautions,
andprecautionsbeforeinstallingandus-
ing the product.
PotentialShockHazardfromDangerous
High Voltage.
Different WattNode models measure circuits with
voltages from 120 Vac single-phase to 600 Vac
three-phase. These voltages are lethal! Always
adhere to the following checklist:
1) CCS recommends that a licensed electrician
install metering equipment.
2) The terminal block screws are not insulated. Do
not contact metal tools to the screw terminals if
the circuit is live!
3) If the meter is installed incorrectly, the safety
protections may be impaired.
Mounting
●Protect the meter from moisture, direct sunlight,
high temperatures, and conductive pollution
(salt spray, metal dust, etc.), using a NEMA rated
enclosure if necessary.
●Do not install the meter where temperatures fall
below -30°C or above 55°C (-22°F to 131°F).
●The meter must be installed in an electrical ser-
vice panel, a junction box, or a limited access
electrical room.
●Do not drill mounting holes with the meter
in the mounting position because the drill bit
or chuck may damage the meter and leave drill
shavings in the connectors.
The meter has two mounting holes spaced 136.6
mm (5.375”) apart (center to center). These mount-
ing holes are normally obscured by the detachable
screw terminals. Remove the screw terminals to
mark the hole positions and mount the meter.
Self tapping #8 sheet metal screws are included.
Don’t over-tighten the screws, as long term stress
on the case can cause cracking.
Electrical Service Types
Table 1 above lists the WattNode models and com-
mon circuit types. In the “Electrical Service Types”
column, when two voltages are listed with a slash
between them, they indicate the line-to-neutral / line-
to-line voltages.
Figure 1 above shows the connections for a three-
phase wye circuit. Other circuit types are similar,
but with fewer connections (no neutral for delta, no
phase C for single-phase three-wire 120V/240V).
See the full manual for more diagrams.
Connect Current Transformers
●Use only UL recognized current transformers
(CTs) with built-in burden resistors that gener-
ate 0.333 Vac (333 millivolts AC) at rated current.
●Do not use ratio or current output CTs such
as 1 amp or 5 amp output models! See the full
manual for the maximum input current ratings.
●To minimize current measurement noise, avoid
extending the CT wires, especially in noisy envi-
ronments. If it is necessary to extend the wires,
use shielded twisted pair wire 22 - 14 AWG,
rated for 300V or 600V.
●You may shorten the CT wires.
●Put jumper wires across unused CT inputs.
●Find the arrow or label “THIS SIDE TOWARD
SOURCE” on the CT and face toward the current
source: generally the circuit breaker.
To install the CTs, pass the conductor to be mea-
sured through the CT and connect the CT leads to
the meter. Always remove power before discon-
necting any live wires. Put the line conductors
through the CTs as shown in Figure 1 above.
CTs are directional. If they are mounted backwards
or with their white and black wires swapped the mea-
sured power will be negative. The meter indicates
negative measured power with flashing red LEDs.
Split-core CTs can be opened for installation around
a conductor. A nylon cable tie can be secured around
the CT to prevent inadvertent opening.
Wiring
Connect the white and black CT wires to the meter.
Excess length may be trimmed from the wires if de-
sired. Strip or trim the wires to expose 1/4" (6 mm)
of bare wire. The current transformers connect to
the six position black screw terminal block. Connect
each CT with the white wire aligned with the white
dot on the label, and the black wire aligned with the
black dot. Note the order in which the phases are
connected, as the line voltage phases must match
thecurrentphasesforaccuratepowermeasurement.
Finally record the CT rated current as part of the
installation record for each meter.
Connect Voltage Terminals
Circuit Protection
The meter must be installed with a disconnect (cir-
cuit breaker, switch, or disconnect) and overcurrent
protection (fuse or circuit breaker).
The meter only draws 10-30 milliamps, so the rating
of any switches, disconnects, fuses, and/or circuit
breakers is determined by the wire gauge, the mains
voltage, and the current interrupting rating required.
●The switch, disconnect, or circuit breaker must
be as close as practicable to the meter.
●Use circuit breakers or fuses rated for 20 amps
or less.
●The circuit breakers or fuses must protect the
mains terminals labeled ØA, ØB, and ØC. If neu-
tral is also protected, then the overcurrent pro-
tection device must interrupt both neutral and
the ungrounded conductors simultaneously.
●The circuit protection / disconnect system must
meet IEC 60947-1 and IEC 60947-3, as well as
all national and local electrical codes.
Ground
WHITE
BLACK
ØB CT
ØC CT
ØA CT
ØB
ØC
N
ØA
GND or Common
Input or Positive
Monitoring Equip-
ment or Display
P1
P2
P3
COM
Output
Status
Status
Status
WATT N ODE
®
PULSE
WNB-
WNB--P
-P
Neutral
Phase A
Phase B
Phase C
LOAD
WHITE
BLACK
WHITE
BLACK
LINE
Source
Faces
Current
Transformers
3Y-xxx
3D-xxx
Figure 1: WattNode Wiring Diagram
Model Type Line-to-
Neutral Vac Line-to- Line Vac Electrical Service Types
WNB-3Y-208-P Wye 120 Vac 208–240
Vac
1 Phase 2 Wire 120V with neutral
1 Phase 3 Wire 120V/240V with neutral
3 Phase 4 Wire Wye 120V/208V with neutral
WNB-3Y-400-P Wye 230 Vac 400 Vac 1 Phase 2 Wire 230V with neutral
3 Phase 4 Wire Wye 230V/400V with neutral
WNB-3Y-480-P Wye 277 Vac 480 Vac 3 Phase 4 Wire 277V/480V with neutral
1 Phase 2 Wire 277V with neutral
WNB-3Y-600-P Wye 347 Vac 600 Vac 3 Phase 4 Wire 347V/600V with neutral
WNB-3D-240-P Delta (or
Wye) 120–140 Vac 208–240 Vac
1 Phase 2 Wire 208V (no neutral)
1 Phase 2 Wire 240V (no neutral)
1 Phase 3 Wire 120V/240V with neutral
3 Phase 3 Wire Delta 208V (no neutral)
3 Phase 4 Wire Wye 120V/208V with neutral
3 Phase 4 Wire Delta 120/208/240V with neut.
WNB-3D-400-P Delta
(or Wye) 230 Vac 400 Vac 3 Phase 3 Wire Delta 400V (no neutral) 3 Phase 4 Wire Wye 230V/400V with neutral
WNB-3D-480-P Delta
(or Wye) 277 Vac 480 Vac 3 Phase 3 Wire 480V (no neutral) 3 Phase 4 Wire 277V/480V
Table 1: WattNode Models

Wiring
● For the line voltage wires, CCS recommends 16
to 12 AWG stranded wire, type MTW, THWN, or
THHN, 600 V.
●Do not place more than one voltage wire in a
screw terminal; use separate wire nuts or termi-
nal blocks if needed.
● Verify that the line voltages match the line-to-line
Ø-Ø and line-to-neutral Ø-Nvalues printed in the
white box on the front label.
●The meter is powered from the line voltage in-
puts: ØA(phase A) to N(neutral), or ØAto ØB
for delta models.
Always disconnect power before connecting
the line voltage inputs to the meter. Connect each
line voltage to the appropriate phase; also connect
ground and neutral (if applicable). The neutral con-
nection “N“ is not required on models starting with
WNB-3D, but we recommend connecting it to ground
if neutral is not present.
The screw terminals handle wire up to 12 AWG. Pre-
pare the voltage wires by stripping the wires to ex-
pose 1/4" (6 mm) of bare wire. Connect each voltage
line to the green terminal block as shown in Figure 1
above. Verify that the line voltage phases match the
CT phases. After the voltage lines have been con-
nected, make sure both terminal blocks are securely
installed on the meter.
When power is first applied to the meter, check that
the LEDs behave normally: if you see the LEDs flash-
ing red-green-red-green (see Figure 7 below), then
disconnect the power immediately! This indicates the
line voltage is too high for this model.
Connect Pulse Outputs
●The outputs P1, P2, and P3 should never be
connected to negative voltages, or to voltages
greater than +60 Vdc.
●The outputs are completely isolated from dan-
gerous voltages, so you can connect them at
any time.
●Since the output wiring is near line voltage wir-
ing, use wires or cables with a 300 V or 600 V
rating.
●If this cable will be in the presence of bare con-
ductors, such as bus-bars, it should be double
insulated or jacketed.
●Forlong distances,use shielded twisted-pairca-
ble to prevent interference. With shielded cable,
connect the shield to earth ground at one end.
●If you need to add pull-up resistors, see the
manual.
The WattNode pulse outputs may be connected to
most devices that expect a contact closure or relay
input. See Figure 1 above for a basic connection.
See the “Installation and Operation Manual” for
more complex connection information.
The following table shows the pulse output channel
assignments for the standard bidirectional outputs
and for the optional per-phase outputs (Option P3).
WattNode
Outputs P1 Output P2 Output P3 Output
Standard
Bidirectional
Outputs
Positive
energy -
all phases
Negative
energy -
all phases Not used
Option P3
Per-Phase
Outputs
Phase A
positive
energy
Phase B
positive
energy
Phase C
positive
energy
Option PV
Photovoltaic
Phase
A+B pos.
energy
Phase
A+B neg.
energy
Phase C
positive
energy
Option DPO
Dual Pos.
Outputs
Positive
energy -
all phases
Negative
energy -
all phases
Positive
energy -
all phases
Table 2: Pulse Output Assignments
Installation Summary
1) Mount the WattNode meter.
2) Turn off power before installing toroidal CTs or
making voltage connections.
3) Mount the CTs around the line conductors. Take
care to orient the CTs facing the source.
4) Connect the twisted white and black wires from
the CT to the black terminal block on the meter,
matching the wire colors to the white and black
dots on the meter label.
5) Install or connect appropriate circuit breakers or
fuses and disconnects.
6) Connect the line voltage wires to the green ter-
minal block of the meter, and check that the CT
phases match the line voltage phases.
7) Connect the output terminals of the WattNode
meter to the monitoring equipment.
8) Check that all the wires are securely installed in
the terminal blocks by tugging on each wire.
9) Apply power to the meter.
10) Verify that the LEDs light correctly and don’t in-
dicate an error condition.
Power Diagnostic LEDs
The three status LEDs on the front of the meter can
help indicate correct operation. The “A”, “B”, and “C”
on the diagrams indicate the three phases.
1.0sec
1.0sec1.0sec
GreenYellowRed
GreenYellowRed
GreenYellowRed
C
B
A
Figure 2: Normal Startup
The meter displays this startup sequence whenever
power is first applied.
Green Off Green Off Green Off
Figure 3: Positive Power
Any phase with the LEDs flashing green is indicating
normal positive power. The LEDs do NOT flash at the
same rate as the pulse output(s).
Green
Figure 4: No Power
Any phase with a solid green LED indicates no power,
but line voltage is present.
Off
Figure 5: No Power - Zero Vac
Any phase LED that is off indicates no voltage on
that phase.
Red Off Red Off Red Off
C
Figure 6: Negative Power
Red flashing indicates negative power for that
phase. Reversed CTs, swapped CT wires, or CTs
not matched with line voltage phases can cause this.
1.0sec
GRGRGRGRGRGR
GRGRGRGRGRGR
GRGRGRGRGRGR
C
B
A
Figure 7: WattNode LED Overvoltage Warning
The line voltage is too high for this model. Disconnect
power immediately! Check the line voltages and the
meter ratings (in the white box on the label).
Off
Off
Off
C
B
A
Figure 8: Meter Not Operating
If none of the LEDs light, then check that the correct
line voltages are applied to the meter. If the voltages
are correct, call support for assistance.
3.0sec
Red
Red
Red
C
B
A
Figure 9: WattNode Error
If the WattNode meter experiences an internal error,
it will light all LEDs red for three or more seconds.
If you see this happen repeatedly, return the meter
for service.
For other LED flashing patterns, see the “Installa-
tion and Operation Manual” or contact support for
assistance.
©2008-11 Continental Control Systems, LLC.
3131 Indian Rd.
Boulder, CO 80301
[phone]
http://www.ccontrolsys.com
WattNode is a registered trademark of Continental
Control Systems, LLC.
Document Number: WNB-P-QIG-V17b
Revision Date: November 30, 2011