•
mains operation remote control ON/OFF
•
battery operation remote control ON/OFF
•
monitoring and fault message transmission via the PROMATRIX Manager DPM 4000; in accordance
to DIN EN 60849 standard
−
thermal overload of the mains transformer
−
thermal overload of power output stages 1 to 4
−
monitoring of the functioning of the power output stages 1 to 4 via pilot tone signal (optional, only with
NRS 90206 installed)
−
ground fault detection for loudspeaker lines 1 to 4 (optional, only with NRS 90207 installed)
−
measuring of input and output level peaks 1 to 4
−
measuring of output voltages / levels of the power outputs 1 to 4
−
measuring of output currents of the power outputs 1 to 4
−
monitoring of connected loads 1 to 4 via current-voltage-measuring
−
recognition of amplifier type including user-definable name
−
reading of software revision of the remote module
−
reading of error flags
−
reading of the output configuration
−
recognition of extensions NRS 90206 and NRS 90207
•
switching the input monitor / output monitor 1 to 4 to the monitor bus
•
pilot tone signal ON/OFF (optional, only with NRS 90206 installed)
•
ground fault error flags reset
Note
Prior to the first operation of the amplifier DPA 4411, you have to set the amplifier address
using the two Hexadecimal Code switches ADDRESS (18) (refer to the PROMATRIX
handbook) and using a waterproof marker pen mark the setting in the ADDRESS label field
on the rear panel of the appliance.
By sending the corresponding command via the serial port REMOTE CONTROL (13) of the remote
module, this function is activated from the PROMATRIX Manager DPM 4000 (see PROMATRIX
handbook).
7. Indicators And Fault Notification
7.1 STANDBY Indicator
When correctly connected and with mains voltage and/or battery voltage present, the green STANDBY
indicator (4) lights.
7.2 READY Indicator
The power amplifier DPA 4411 provides a power-on delay of approximately 3 s to prevent switch clicks
from becoming audible. If after this period of time no faulty condition has been detected, the green READY
indicator (7) lights and the mute-relays pull. When thermal overload of the mains transformer or of one of
the power output stages is detected, the corresponding green READY indicator (7) will not light and the
according mute-relay drops. If, with the NRS 90206 extension installed the pilot-threshold (see paragraph
9.1) is declined, the corresponding green READY indicator (7) goes out but the amplifier stays operational
and a fault message gets transmitted to the PROMATRIX Manager DPM 4000.
7.3 PROTECT Indicator
In case of thermal overload of the mains transformer or of a power output stage is detected, the red
PROTECT indicator (5) will light. During thermal overload of the mains transformer, all mute-relays drop
while during thermal overload of a power output stage, only the according mute-relay drops. After the
mains transformer or the power amplifier have regained their normal temperature, the red PROTECT
indicator (5) automatically goes out and the appliance recovers normal operation mode. The faulty
condition could have been caused by either overload, too high environmental temperature, or by an error
in the ventilation system. A fault-message is transmitted to the PROMATRIX Manager DPM 4000.
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