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Bosch Security Systems | 2011-02
Praesideo 3.5 | Installation and User Instructions | 10 | Events en | 420
Event message:
Amplifier missing
Originator:
Amplifier channel of a basic amplifier in which the fault
occurred.
Extra information:
----
Description:
Logs the absence of an amplifier channel (based on
missing battery and mains power supply).
Resolve:
When the fault disappears or when the unit
disconnects.
Recommended action:
Check whether both CAT-5 cables between the multi
channel interface and the basic amplifier channel are
correctly connected.
Event message:
Amplifier initialization failure
Originator:
Power amplifier channel in which the fault occurred.
Extra information:
----
Description:
Logs the inability of a power amplifier to return from
the standby mode.
Resolve:
When the fault disappears or when the power
amplifier disconnects.
Recommended action:
Switch the power amplifier off and on again.
Event message:
Amplifier overheat
Originator:
Amplifier channel in which the fault occurred.
Extra information:
This fault event cannot be generated by LBB4428/xx
Power Amplifiers.
Description:
Logs the overheat (> 85 °C) of an amplifier channel.
The system decreases the audio level with 3 dB. This
fault event can occur even when the power amplifier is
disabled with the configuration software.
Resolve:
When the fault disappears or when the power
amplifier disconnects. If this fault is
acknowledged/reset, any Redundant Supply 24V in
the same amplifier channel will also be
acknowledged/reset.
Recommended action:
Check if the fans of the power amplifier operate
correctly. Also check the ambient temperature of the
rack. If necessary, use forced cooling.
Event message:
Amplifier overheat: (amplifier channel) muted
Originator:
Amplifier channel in which the fault occurred.
Extra information:
This fault event cannot be generated by LBB4428/xx
Power Amplifiers.
Description:
Logs the overheat (> 90 °C) of an amplifier channel.
The system mutes all amplifier channels in the power
amplifier. This fault can occur even when the power
amplifier is disabled with the configuration software.
Resolve:
When the power amplifier disconnects or when the
fault is resolved automatically.
Recommended action:
Check if the fans of the power amplifier operate
correctly. Also check the ambient temperature of the
rack. If necessary, use forced cooling.