Echelon Lumewave CPD 3000 Lighting Controller - Manual (Page 18)

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Working with the CPD 3000 and the target driver/ballast is required to determine
the limits for the best scaling of the nviLampValue.value to the actual control
signal. These values must be set before the nciPowerProfile initialization can
be determined.
LC Alarm Management
The LC provides rich support for status bits which are derived from the power
measurement chip included in CPD 3000 hardware. Alarms require
characterization of nominal operating conditions defined by various CP fields
described in this section. The current existing alarm conditions are always
reflected in nvoControlData.faults before any time filters are applied. The
alarms reported in nvoControlData.faults have no filters applied and are
potentially quite dynamic at the transition. The CPD 3000 applies several filters
to limit the frequency of alarm events. First, at each state transition (OFF to ON,
or WARMUP to ON) Alarms are not checked for 120s. Second, the network
variable nvoLCstatus contains latched versions of the fault bits that have a 60
second active before setting condition as reported in nvoControlData.faults.
If a defined condition exists of 60s, the alarm flag in nvoLcStatus is set and it
will persist until power to the CPD 3000 is cut, action is taken by updating the
value of nviStatReset, or UNVTcontrolCfg.ClrTm minutes have expired after
the lamp is switched OFF at sunrise.
It is important to understand how alarm conditions are filtered to prevent nuance
alarm conditions. Alarms are only checked if the CPD 3000 state is OLC_ON or
OLC_OFF
. If the output level or the state is changed, alarm conditions are not
checked for 120s. If you reset the CPD 3000 at T = 0s, and set control the line
voltage to 100VAC with a 120V nciControlCfg.supplyVoltage value, the
nvoControlData
.faults.lowSupplyVoltage flag will not be set until T = 130s
(the transition from OLC_COOLDOWN occurs 10s after reset). To be registered as a
fault in nvoLcStatus, the condition of low supply voltage must exist for an
additional 60s. The flag in nvoLcStatus is latched, and will not be cleared until
the configured time after the CPD 3000 switches the load OFF at sunrise, as
described below.
CP Field Type Notes
nciControlCfg.supplyVoltage SNVT_volt Nominal supply voltage for
the installed streetlight
segment. (Default - 240V)
nciControlCfg.defaultLev SNVT_lev_cont Value to use at reset, or if
maxRcvTmo
expires.
(Default: 100%)
nciControlCfg.maxRcvTm SNVT_time_sec
The time used to determine
if communication to the
segment controller no
longer exists. At this point,
the RcvTmo alarm is
triggered, and the fixture is