Monitoring According To Iec 60849 - B&R PLC PP15 Reference Manual

2.6

Monitoring according to IEC 60849

The sound reinforcement system is monitored in the d&b amplifiers. Both
the connected loudspeakers (Output loop ⇒ Load monitoring) and the
incoming signal (Input loop ⇒ Input monitoring) are monitored. For
further details, refer to the 'Load monitoring' and 'Input monitoring'
sections in the respective amplifier software manuals.
In addition, the amplifier incorporates a permanent self-monitoring
function.
The PP15 communicates with the amplifier via the CAN-Bus and
displays error messages from the amplifier at a central location point
(see 2.3.4 Digital outputs (DO) on page 11).
Since amplifier boot time and power-up time can take longer than 10 s,
the power of the PP15 must be backed up by a UPS (uninterruptible
power supply) to ensure the PP15 is ready for operation at all times.
Since the internal error logbook of the PP15 is restricted to 50 entries,
the digital output "AutoReset" indicates whenever the PP15 was
automatically reset and restarted.
B&R PLC PP15 for use with the, d&b Remote network, Reference manual (1.1 EN) Page 14 of 16