Elenos INDIUM Series User Manual

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5.6 Protections
The device has a protection system, partly integrated and partly optional, related to har-
dware and software.
5.6.1 Software protections
5.6.1.1 IPF (Intelligent Proportional Foldback)
IPF is an intelligent system that reduces the output power in case of unbalanced load
avoiding shutdown.
5.6.1.2 IPC (Intelligent Power Control)
The IPC shall, under proper operation, to maintain constant output power by +/-1% of
target set, independent of changes in voltage, temperature or load.
This contributes largely to make the apparatus insensitive to the conditions in which he
is forced to operate.
The IPC also helps to optimize the RF efficiency, leading the MOSFET to work at maxi-
mum efficiency, minimizing the total power consumption.
5.6.1.3 Safety Management (option “Lifextender”) ®
The Safety Management is a set of algorithms that perform real-time analysis of tran-
smitter functional state and operates to maintain the output power provided, depen-
ding on the type and extent of any anomalies (internal or environmental) to be arise.
The Safety Management can command a reduction in output power depending on the
anomaly seriousness that has occurred. The algorithms operate at different levels and in
different sections of the apparatus: Thermal Management on RF group, Current Manage-
ment on power supply, Thermal Management on power supply, Fault Management on
RF group, Fault Management on power supply, Cooling Management on fans group.
Thermal Management on RF group (Lifextender) ®
If the temperature measured at the MOSFETs exceed the value of 72 ° C it involves an
initial level of Derating, operating to reduce the temperature by reducing output po-
wer. The power reduction is the minimum possible to reach a thermal equilibrium at a
temperature below 72 degrees. The reduction of output power, with this first derating,
never exceeds 40%. In other words, the output power remains above 60% of that set
by the user, and it does not activate “- 3 dB” alarm.
This first level of Derating is effective in almost all cases.
If this Derating is not enough (very rare), it involves a second level that, reducing the
power, reaches a state of thermal equilibrium compatible with the safe operation of the
device, even if under - 3 dB (the alarm is forwarded).
In case of ineffectiveness also of this second derating (case of external conditions that
are not compatible with the safe operation of the apparatus) the transmitter is turned
off.
In this case, THERMAL DERATING provides a hysteresis of 10 ° C before restore the ap-
paratus to normal operation. After three unsuccessful attempts, the control logic block
apparatus.
Current management on power supply (Lifextender) ®
It is activated when it exceeded the maximum current for continuous operation of
power supply. This value is set below the limit of output current, and it represents the
threshold that can be exceeded for short periods (up to 1 minute each time).
If this condition occurs, it is enabled “PSU current derating” and ALC management algo-
rithm to normal operating condition is replaced by another in which the VDS and Bias
control is given by power setting and, with even higher priority, by the current supplied
Product description

Elenos INDIUM Series Specifications

General

Brand	Elenos
Model	INDIUM Series
Category	Transmitter
Language	English