CONTINENTAL CONTROL SYSTEMS RWNB-3D-240-P, Installation Manual, Page: 11 / 16

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4.2.5 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.
Red Off Red Off Red Off
C
4.2.6 Overvoltage Warning
The following indicates that the line voltage is too high for this model. Disconnect power immedi-
ately! Check the line voltages and the meter ratings (in the white box on the label).
1.0sec
G R G R G R G R G R G R
G R G R G R G R G R G R
G R G R G R G R G R G R
C
B
A
4.2.7 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 customer service for assistance.
Off
Off
Off
C
B
A
4.2.8 WattNode Error
If the meter experiences an internal error, it will light all LEDs red for three or more seconds. If you
see this happen repeatedly, call customer service.
3.0sec
Red
Red
Red
C
B
A
For other LED patterns, see the Operating and Reference Guide or contact support for assis-
tance.
4.3 Monitoring
The WattNode Pulse models uses opto-isolator outputs that simulate contact closures. These
are generally connected to a data logger or similar monitoring device which can count pulses to
measure energy.
4.4 Pulse Scale Factors
See the Operating and Reference Guide for full details with equations to scale pulse counts and
frequencies to energy and power. The following describes simple scaling that works for common
situations using the variable
WHpPpA (watt-hours per pulse per CT rated amp). If you multiply the
WHpPpA by the amp rating of your CTs, the result will be the watt-hours measured each time the
meter generates a pulse.
EnergyPerPulse (WH) = WHpPpA
•
CtAmps
The standard WHpPpA values are listed in the following table. These only apply for models with
the standard 4.00 Hz full-scale pulse frequency. For other full-scale output frequencies (specified
with
Option Hz or Option Kh ), see the Operating and Reference Guide or contact support.