Sonance Sonamp 875D SE, Instruction Manual

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7
SONAMP ® 875D SE 8-CHANNEL AMPLIFIER
Protection Circuits
Thermal Protection
If the amplifier’s cooling vents are blocked, or it is installed with inadequate ventilation the amplifier may
exceed its safe operating temperature. If the amplifier’s internal temperature exceeds 154°F (68°C) it
will self-protect, and the following will occur:
• The audio output to all connected zones will shut OFF.
• The front-panel P
ROTECTION
LEDs (see
Figure 3) will illuminate yellow.
• An over-temp message will be sent via RS-232.
Once a safe temperature (<67°C) is reached, the Protection LEDs will all extinguish. You can then
re-activate the amplifier, either by switching the front-panel Power button OFF and ON or by a ‘Power’
command if the amplifier is being serial controlled.
IIM MPPO ORRTTAAN NTT:: BBeeffoorree rree-aaccttiivvaattiinngg tthhee aam mpplliiffiieerr,, ccoorrrreecctt tthhee pprroobblleem m tthhaatt ccaauusseedd tthhee
oovveerr-tteem mppeerraattuurree ccoonnddiittiioonn ((vvoolluum mee sseett ttoooo hhiigghh,, iinnaaddeeqquuaattee vveennttiillaattiioonn,, eettcc..))
NOTE: If you’re serial-controlling the 875D SE you can poll the amplif ier at any time and its internal
temperature will be repor ted to the control device.
Over-Current Protection
If an over-current condition occurs in a zone, that zone will shut OFF for 5 seconds and its P
ROTECTION
LEDs will flash ON
and OFF. The zone will then turn back ON. If the over-current condition continues the zone will shut OFF for 6 seconds,
its P
ROTECTION
LEDs will flash, then it will turn back ON. If the over-current condition continues this process will repeat,
with the wait time increasing by 1 second each time. When the wait time reaches 10 seconds the zone will LOCK, the
zone’s P
ROTECTION
LEDs will continually illuminate and the amplifier must be powered OFF using the front-panel P
OWER
button (or a serial command, if the amp is being controlled via RS-232). BB ee ff oo rr ee tt uu rr nn ii nn gg tt hh ee aa m m pp ll ii ff ii ee rr O O N N aa gg aa ii nn ,,
cc oo rr rr ee cc tt w w hh aa tt ee vv ee rr ii ss cc aa uu ss ii nn gg tt hh ee oo vv ee rr -- cc uu rr rr ee nn tt cc oo nn dd ii tt ii oo nn ii nn tt hh ee zz oo nn ee (( ss pp ee aa kk ee rr ii m m pp ee dd aa nn cc ee tt oo oo ll oo w w ,, vv oo ll uu m m ee tt oo oo
hh ii gg hh ,, ss hh oo rr tt -- cc ii rr cc uu ii tt ,, ee tt cc .. )) ..
PROTECTION
BBE ON
ACTIVE
Figure 3:
F
RONT
-P
ANEL
S
TATUS
LEDs