Display Messages - Monacor PA-1250D Mode D'emploi

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3) Connect the PA speakers to the screw ter-
minal SPEAKER OUTPUT (17). Make sure
that the total load of the speakers does not
exceed 250 W
; otherwise the protective
RMS
circuit will respond and reduce the volume of
the amplifier or mute it (
chapter 7).
4) To ensure continued operation of the ampli-
fier after mains failure, connect a 24 V emer-
gency power supply unit (e. g. PA-24ESP
from MONACOR) to the screw terminal
24 V (20).
5) For remote-controlled activation / deactiva-
tion, connect a switch to the screw terminal
AC PWR REMOTE (15).
6) For remote control of the amplifier (e. g. via a
PC) and for showing the operating parame-
ters of the amplifier on a display, an RS-485
interface is provided. For data transmission,
the Modbus protocol is used (
Connect the PC to the jack RS 485 IN (14).
To operate another unit by remote control,
connect this unit to the jack RS 485 OUT.
7) Finally connect the mains cable provided to
the mains jack (13) and then connect it to a
socket (230 V~ / 50 Hz). The LED STAND-BY
(12) lights up.
6 Operation
1) Press the button POWER (11) to switch on
the amplifier. The LED STAND-BY (12) is
extinguished; the LED ON (7) lights up and
the display (1) is illuminated. To switch off the
amplifier (i. e. to switch the amplifier to the
standby mode), keep the button POWER
pressed until the display is extinguished.
Alternatively, switch on / off the amplifier
by remote control via a switch connected to
the screw terminal AC PWR REMOTE (15).
When the amplifier has been switched on by
remote control, the display shows
beneath the line
STATUS
.
Note: The amplifier can only be switched on / off by
remote control when it has not been switched on
with the button POWER. To allow for remote-con-
trolled activation / deactivation even though the
amplifier has been switched on with the button
POWER, open the connected switch and then keep
the button POWER pressed until the LED STAND-
BY lights up.
2) To adjust the volume, first press the knob
PUSH / LEVEL for two seconds until
SETTING
appears on the display. Then turn
the knob to adjust the volume. Finally briefly
press the knob to exit the volume setting
menu and to memorize and lock the volume
adjusted.
The display indicates the volume adjusted:
VOLUME
[ 00 ] ... [ 99 ]
When a specific volume has been reached,
the green LED SIG (7) lights up. The red LED
CLIP lights up when the amplifier is being
overloaded; reduce the volume accordingly.
3) Make all other settings via the menu:
Note: When in a menu, press a button within 30 sec -
onds; otherwise the menu will be deactivated and
any settings you may have made will be discarded.
a) Press the button MENU (2) for two sec-
onds until
EDITING MODE
display.
b) Press the knob PUSH / LEVEL. The set-
ting menu appears (fig. 3).
BATTERY?
c) The first menu line
Use the button SELECT (3) to define if the
voltage of an emergency power supply
unit connected is to be monitored (YES) or
not (NO).
Note: If you use the unit PA-24ESP from MONA-
COR for emergency power supply, deactivate
monitoring (OFF). Since the 24 V power of the
PA-24ESP is only present in case of a mains fail-
ure, the PA-1250D would report this as a fault
even in normal mains operation.
d) To go to the next menu line, press the but-
ton MENU; to change the setting, press
the button SELECT:
H.P.F?
pass filter (200 Hz) for the input PGM IN
(18)
AMP SLEEP?
amplifier will automatically go to sleep (the
message
on the display) if the input signal is missing
page 26).
for more than one minute. After four min-
utes without an input signal, the amplifier
will change to the standby mode. As soon
as a signal is present, the amplifier will be
reactivated.
AMP CHECK?
toring of the power amplifier. If no input
signal is present at the amplifier, the power
amplifier will be checked by means of a
test signal (the interval of the test signals
can be set). If a fault is detected, the dis-
play
FAULT
Note: It is only possible to select the menu line
AMP CHEC
been deactivated. The function AMP CHECK is
automatically deactivated when the function
AMP SLEEP is activated.
Interval TIME
of the power amplifier checks (
24 hours)
e) To save the settings and exit the menu,
press the button ENTER (4).
[REMOTE]
save
the standard display reappears (fig. 1).
Note: You can exit the setting menu at any time by
pressing the button ESC (5). All the settings you
may have made will be discarded.
4) If the amplifier is connected to a PC, activate
the second setting menu to define the unit ID
and the baud rate:
a) Press the button MENU for two seconds
until
EDITING MO
VOLUME
play.
b) Press the button MENU again to activate
the second setting menu (fig. 4).
c) The first menu line
is selected. Use the button SELECT to
define the unit ID.
d) Press the button MENU to go to the next
menu line. Use the button SELECT to
define the baud rate.
e) Press the button ENTER to save the set-
tings and exit the menu.
5) Two info menus can be activated for viewing
the settings (fig. 5 and 6): To activate info
menu 1, press the knob PUSH / LEVEL; to
activate info menu 2, press the button
ENTER / INFO. Info menu 1 also shows the
flashes on the
temperature of the heat sink (
..°C
). Press the button MENU to go to the
next menu line. To exit a menu, press the but-
ton ESC / BUZZER or wait for approx. 30 sec-
is selected.
onds until the menu automatically disap-
pears.
to activate / deactivate the high-
With the setting ON, the
AMP Sleeping
starts flashing
to activate / deactivate moni-
AMP
will
show
the
message
(
chapter 7).
K when the function AMP SLEEP has
to set the time intervals
1
hour to
2
EDITING
briefly flashes on the display; then
DE flashes on the dis-
Communication ID
Temperature
6.1 Reset
If the amplifier cannot be operated properly any-
more, reset the amplifier by means of the follow-
ing two buttons:
MASTER RST (6) to reset the master micro-
processor
CPU RST (9) to reset the second microproces-
sor
Additionally, the button OCP RST (10) is avail-
able which allows you to reset the protective cir-
cuit when
OVER CURRENT
appears on the menu
(
chapter 7, paragraph "Overload").
IMPORTANT! Use a thin, non-conductive
object to press the reset buttons. If the second
microprocessor was reset by means of the but-
ton CPU RST, the master microprocessor must
also be reset by means of the button MASTER
RST for the amplifier to work properly.

7 Display Messages

The display indicates various operating modes
and faults. If there is an acoustic warning signal
in case of a fault, press the button BUZZER (5)
to deactivate this signal.
Inputs
Priority Input
Be Careful..
This message keeps flashing on the display as
long as a signal is present at the input PRIORITY
IN (19). The input PGM IN (18) is muted.
AMP Sleeping
Be Careful..
This message is displayed when the input signal
is missing for one minute and
ON
the line
AMP SLEEP?
of setting menu 1. The
amplifier is in the sleep mode. It is switched on
again when the button ESC (5) or the knob
PUSH / LEVEL is pressed or when the input sig-
nal is present again. If the signal is missing for
four minutes, the amplifier will change to the
standby mode and the LED STAND-BY will
flash. The amplifier will change from standby
mode to operation mode as soon as an input sig-
nal is present or the button POWER (11) is
pressed.
Power supply
AC Line Check
LOW VOLTAGE
This message appears when the mains voltage
falls below approx. 190 V. In this case, the power
amplifier is switched off.
VOLUME
STATUS
[ .. ]
[ BATT.]
If the amplifier is connected to an emergency
power supply unit and the mains voltage fails,
the amplifier will switch to the emergency power
supply. If the setting
YES
was selected in the line
BATTERY?
of setting menu 1, the display will
[BATT.]
alternately show
and
beneath the line
STATUS
.
Battery Check
LOW VOLTAGE
This message appears when the voltage of the
emergency power supply unit falls below approx.
21 V and the setting
YES
was selected in the line
GB
has been set in
[Normal]
9

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