ECRESO FM 100/300 W, user manual– 06/2015
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Head Office : Parc d’activites Kennedy - 20, avenue Neil Armstrong – 33700 Bordeaux-Merignac (France)
Tel +33 (0)5 57 928 928 – Fax +33 (0)5 57 928 929 –
www.worldcastsystems.com – [email protected]
2.4.4.
Protections incorporated into the PSU
All Ecreso FM and Ecreso FM Amplifier module from 300 to 2000 W have an auxiliary power block and a power block,
each having its own protections:
Against overloads: protects by limiting the current. For auxiliary power supplies, it is a protection against
shorts circuits.
Against overvoltage.
Against high temperatures (see previous section).
The main power supply voltage and the auxiliary power supply voltage are monitored as follows:
Main power supply:
if the difference between the measured voltage and the expected voltage is greater than 10%, a Warning
alarm is triggered (Alarm Volt1). Expected voltage is automatically computed.
Auxiliary power supply:
Voltage should be either 5, 12 or -12 V. if the difference between the measured voltage and the nominal
voltage is greater than 10%, a Warning alarm is triggered (Alarm Volt Aux).
For both power supplies, we are monitoring the output voltage (DC); the input is not monitored.
The current is also measured and monitored. The threshold varies depending of the power of the Ecreso FM: 10 A for
the Ecreso FM 100 W, 10 A for the Ecreso FM 300 W, 23 A for the Ecreso FM 750 W, 29 A for the Ecreso FM 1000 W,
26 A per amplifier pallet for the Ecreso FM 1500 W, 31 A per amplifier pallet for the Ecreso FM 2000 W. In case of
overshoot, a Warning alarm is triggered (Alarm Cur) and the nominal power is reduced.
