Chromalox CFW, Руководство по эксплуатации оборудования, Страница: 66 / 84

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The CT repeat period is kept to a minimum for each power value (whereas in ZC mode the period is always fixed
and not optimized).
parameter defines the minimum number of conduction cycles settable from 1 to 10.
In the following example, the parameter = 2.
HSC - Half single cycle
This mode corresponds to Burst Firing that manages ON and OFF half-cycles. It is useful for reducing
the flickering of filaments with short/medium-wave IR lamp loads. With these loads, to limit operating
current with low power, it is useful to set a minimum power limit (for example Lo.P = 10%, ref “CFW-IR
operation guide”).
NB.: This mode is NOT allowed with inductive loads (transformers) It is used with resistive loads in singlephase,
star with neutral, or open delta configuration
Example of operation in HSC mode with power at 33 and 66%.
Phase Angle (PA)
This mode controls power on the load via modulation of trigger angle q
if power to be transferred to the load is 100%, q = 180°
if power to be transferred to the load is 50%, q = 90°
Resistive load
Inductive load