powersoft D-Cell504 IS, Руководство пользователя

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D-Cell504
User Guide
SECTION 3 – FEATURES
Protections
1) Clip limiter:
Acts as input stage gain reduction since Input/Output comparation detects differences exceeding 1% THD.
Time constants are defined for +3dB input drive respect to input sensitivity:
Attack time = 5mS ; Hold time =10mS ; Decay time = 70mS
2) Average Power Limiter:
Acts as input gain reduction to reach a stationary output power of 120W independently to load conditions.
Integration constant delay Time=
4 sec.
3) Average High Frequency Limiter:
Acts as input gain reduction to reach a stationary output voltage of -K*(dB) respect to full output swing for
frequencies above 7 KHz
4) Average Current Protection:
Acts as amplification stage shutdown (mute) when average output current of 7.5 A
rms
is measured.
5) Peak Current Shut Down:
Acts as output stage switching process inhibition.
Self resetting after 2 Seconds.
Tripping point= 35 A
6) Temperature Protection:
Acts reducing the output stage gain above temperature level of 85°C (temperature on output power devices
proximity).
T plate <80°C= TEMPOUT not active
T plate
≥ 80°C= TEMPOUT active (turns on/off and the led blinks slowly )
T plate ≥ 85°C= TEMPOUT active (turns on/off and the led blinks fast )
T plate ≥ 90°C= Output Shutdown; TEMPOUT steady on
Temperature
Detector
VCA
input
Output
Stage
output
Peak Current Detector
Average Power Detector
Average Hi-Freq. Detector
Average Current Detector
Input-Output Comparator