Sonix 350-d Technical Manual
Green
Red
Status
On
Off
Amplifier is operating normally
Off
On
Shutdown condition – amplifier temporarily
inactive for MosFET protection, when the
MosFET drive is overloaded
On
Slow flashing Amplifier has been in shutdown mode but is now
operating normally
ote:
N
When in Shutdown mode, every ~10 seconds the amplifier will
try to return to normal operation and will carry on if fault condition is no
longer present.
5.1.7 Temperature
Indicates the temperature inside the amplifier:
Green
Red
Status
On
Off
Internal temperature below the limit set in the
configuration
Off
On
Temperature Fault condition – internal
temperature exceeded the limit set in the
configuration
On
Slow flashing Temperature fault had been detected but is now
clear
There are two Temperature Set Point settings in the
350-d configuration:
•
Temperature Set Point 1 - when internal temperature
exceeds this value, fans on the unit will speed up to
their maximum capacity,
•
Temperature Set Point 2 – exceeding this value
triggers Temp Fault.
See the SAS Product Manual for details.
ote:
N
Those values refer to temperature inside the 350-d unit and not
the ambient temperature. All values are in °C.
5.1.8 Hot Standby
Indicates 350-d’s Hot Standby status:
Green
Status
On
Amplifier configured as a Hot Standby
Slow flashing
Unit in fault, amplifier replaced by Hot Standby amplifier
5.1.9 Audio Output Level
Indicates the output audio level:
Green
Status
Green
Audio level low
Orange
Audio level in nominal range
Red
Audio level approaching maximum level
5.1.10 AC Power status
Indicates status of the ac power supply:
Green
Red
Status
On
Off
AC power present
Off
On
AC power missing – amplifier in fault
On
Slow flashing AC power was missing but is now restored
ote:
N
This indication will only work if the unit is supplied from both ac
and battery power sources. If battery backup supply is not connected
the unit will shut down completely.
5.1.11 DC PSU status
Indicates status of the internal 48 V dc supply:
Green
Red
Status
On
Off
Internal 48 V dc present
Off
On
Internal 48 V dc out of specification or not
present
On
Slow flashing Internal 48 V dc is now restored
Warning:
AC power may still be present!
Care should be taken when fault-finding or
disconnecting the unit!
5.1.12 Fuse status
ote:
N
Indicates external fuse status:
Green
Red
Status
On
Off
Fuse good
Off
On
Fuse blown
ote:
N
With this fault there are no other LEDs visible on the unit.
Warning:
AC power may still be present!
Care should be taken when fault-finding or
disconnecting the unit!
5.2 Rear panel fault outputs
See section 3.4.6 for details of operation.
5.3 Front button operation
Front panel button has several functions and each button
press will result in highlighting them in order from top to
bottom. Activation of the selected (highlighted) function
is automatic after a few seconds of no button activity. If
button is pressed while the last function is highlighted,
selection is cleared, and no function will be activated.
Figure 13 below illustrates this:
18
SONIX 350-D TECHNICAL MANUAL
TM367 / A May 2022 www.eaton.com
