Ateis DPAfour125 User manual

DPAfour Series User Manual
www.ateis-europe.com Page 1 of 11
www.ateis-europe.com
ATEÏS Europe BV - Sydneystraat 42 - 3047BP ROTTERDAM - NETHERLANDS
Phone [phone] - Fax [phone]
P.O. box 12172, 3004 GD, ROTTERDAM - Chamber of commerce: 24465391 Rotterdam
version
revision
date
01
02
24-02-2012
D
e
l
i
v
e
r
i
n
g
)
Y
o
u
r
)
M
e
s
s
a
g
e
Operating manual, DPA Series DPA-10UMS01-V01R04
DPAfour125, DPAfour250
AMPLIFIERS
Operating Manual

DPAfour Series User Manual
www.ateis-europe.com Page 2 of 11
1.!Introduction:............................................................................................................................3!
2.!General description .................................................................................................................3!
3.!Front Panel Features ...............................................................................................................4!
4.!Rear panel features..................................................................................................................5!
5.!Wiring Examples ....................................................................................................................7!
6.!Block Diagram ........................................................................................................................8!
7.!Technical Data Overview .......................................................................................................9!
8.!Safety Declaration.................................................................................................................10!
9.!International sales and service points ...................................................................................11!

DPAfour Series User Manual
www.ateis-europe.com Page 3 of 11
1. Introduction:
The DPAfour is a 2U high 19” rack mountable, 4-channel class-D power amplifier, transformer isolated
for 100V, 70V, 50V and low-impedance distributed loudspeaker systems.
These amplifiers have a dual voltage mains 115/230 VAC and a 24 VDC battery back-up input which
allows it to be used in combination with a battery backup system for maximum availability and
durability in an emergency evacuation system.
There are 3 types of power amplifiers available in the DPAfour range of products.
2. General description
The DPAfour (Digital Power Amplifier) is designed for any public address or voice alarm system
application.The DPAfour amplifiers were specifically developed to meet the requirements of EN54-16 and
can therefore also be used as part of fire detection and fire alarm systems.
For safety installations, each amplifier module is fitted with its own 230 VAC/24 VDC power supply for
increased system reliability. To avoid handling errors, the gain setting for each amplifier channel is set
using the potentiometer located at the back of the apparatus. In addition to standard electronic protection,
DPAfour amplifiers also have electronic and thermal protection to protect them from all potential hazards.
A fan provides forced cooling for the final power shelves and internal parts of the apparatus. It starts
automatically when the temperature reaches a certain threshold, and stops when it returns to normal
values. The functionality of the cooling system is monitored by the internal control system.
The indicators on the front panel will display the status of each amplifier: AC or DC power supply, any
internal fault and the presence of audio and/or audio overload.
The DPAfour amplifier series can be ordered with optional 115V power supply. Please contact your local
dealer or your regional Ateis branch office.

DPAfour Series User Manual
www.ateis-europe.com Page 4 of 11
3. Front Panel Features
Signal and clip indicators:
The blue LEDs used for signal indication will activate when the signal at the associated input has reached
the threshold (minimum) level. The clip LEDs will activate when the maximum permissible input level has
been reached.
Temperature:
If the device internal temperature exceeds 95 degrees C, the TEMP LED will light and the associated
amplifier will shut down until the temperature falls below 95 degrees C. The amplifier will resume function
automatically. Always ensure that a rack cabinet is sufficiently well-ventilated.
DC:
The DC LED activates when the DPAfour amplifier is powered by a 24VDC power supply.
Power:
The Power LED activates when the DPAfour amplifier is ON and powered with either 230/115VAC or
24VDC.

DPAfour Series User Manual
www.ateis-europe.com Page 5 of 11
4. Rear panel features
AC Power Inlet:
The 3 pin IEC connector is located in the centre of the amplifier rear panel. It accepts a standard mains
power lead fitted with an IEC connector.
AC/DC Fuse Receptacles:
Both AC and DC power inputs are protected by means of electronic fuses. There are no serviceable parts
inside of the amplifier case.
Power Switch:
The power switch is located next to the power inlet on the rear panel. When the power switch is in the “ON”
position, the front panel power LED will be lit.
24VDC battery backup connector:
The DPAfour amplifier can be operated with battery backup. The connector is located on the central part of
the amplifier rear panel. This 24VDC power supply can be used where AC power is not available or
according to EN54 as a secondary supply. When in use, the front panel Power LED will activate in addition
to the front panel DC LED.
CAUTION! If connected directly to a battery unit, this connection should be externally fused with
50A max.
This is not required when connected to the Ateis BECS150 Charger and Supply unit
Channel 1-4 Audio Output:
For each amplifier channel, there is a dedicated Audio Output connector for connection of a single selection
from a 4Ohm loudspeaker load or one of a 50V, 70V or 100V line loudspeaker load not to exceed the rating
of the amplifier output. For each load type, the Com point is the –ve terminal. The 4Ohm, 50V, 70V and
100V are the +ve terminals for each load type.
Channel 1-4 Inputs:
For each channel, there is a Euro terminal block balanced input. Each input offers gain adjustment as
required.
General Fault Output Contact:
The fault contact indicates an amplifier fault by giving an opening contact. (NC)
Service Request Output Contact:
The Service Request contact indicates that maintenance is needed. This is indicated by giving an opening
contact. (NC)
Lamp Test Input Contact:
By closing this input contact, all LEDs on the front display of the amplifier will activate.
Spare Input Contact:
For future use.
Configuration switches:

DPAfour Series User Manual
www.ateis-europe.com Page 6 of 11
Switch Nr.
Function
1
ON
OFF
The indicators on the front side will comply with the requirements
of EN54-16. 9 (most indicators are off)
All indicators will be working.
2
ON
OFF
Sleep modus disabled when working on battery power.
Sleep modus enabled (wake up is done by 18 – 20 KHz
monitoring tone)
3
ON
OFF
Sleep modus disabled when working on battery power.
Sleep modus enabled (wake up is done by 18 – 20 KHz
monitoring tone)
4
No function.

DPAfour Series User Manual
www.ateis-europe.com Page 7 of 11
5. Wiring Examples
Diva-8 DPA wiring example with DPA ch 1&2 combined *
IDA8 & DPA wiring example
* In case of combined DPA channels, gain settings should be set at
equal level for both channel 1&2 and/or 3&4

DPAfour Series User Manual
www.ateis-europe.com Page 8 of 11
6. Block Diagram

DPAfour Series User Manual
www.ateis-europe.com Page 9 of 11
7. Technical Data Overview
Power supply DPAfourxx
Unit
DPAfour125
DPAfour250
Nominal AC input voltage
V
115 or 230, 50-60 Hz internally selectable
AC input voltage range
%
+/- 15
Peak inrush current
A
<10
Nominal DC input voltage
V
24
DC input voltage range
V
19-30
Idle power consumption AC all channels on
W
12
15
Idle power consunption AC all channels standby
W
1 – 2
Idle current DC channels standby
mA
30
AC fuse rating
A
6,3 AT-H250V
8 AT-H250V
DC fuse rating
A
30AF-H
50AF-H
Overall power efficienty 230VAC input
max ouput power @1kHz
%
83
Overall power efficienty DC input
max ouput power @1kHz
%
94
95
Power consumption
Standby
A
0,03
0,03
Surveillance
A
1,45
1,65
1/8 Power
A
4,5
8,77
1/2 Power
A
11,25
21,93
Max Current
A
22,5
43,85
Amplifier DPAfourxx
Continuous nominal output power per channel
driven into nominal load @1kHz 30° c ambient
W
125
80Ω/62,5nF
250
40Ω/62,5nF
Continuous nominal output power per channel
driven into nominal load @1kHz 55° c ambient
W
TBA
TBA
Nominal balanced input level for 100V output
@1kHz and nominal load
V
0,775
Balanced input level trim range for 100V output
@1kHz and nominal load
V
0,775 – 8
Max balanced input level
V
8
Input impedance @1kHz
Ω
20K
Input common mode rejection @<1kHz
dB
>60
Frequency response(-3dB)
Hz
50-20k
80Ω/62,5nF
50-20k
40Ω/62,5nF
Output voltage drop between no load and nominal
load
dB
<1 80Ω/62,5nF
<1 40Ω/62,5nF
S/N ref nominal power @1kHz 22Hz–22kHz
dB
>90 80Ω/62,5nF
>90 40Ω/62,5nF
THD nominal power -3dB @1kHz 22Hz–22kHz
%
<0,1 80Ω/62,5nF
<0,1 40Ω/62,5nF
Crosstalk between channel 50Hz-20kHz nominal
load
dB
<-70 80Ω/62,5nF
<-70 40Ω/62,5nF
Connectivity
Main AC input socket
IEC-3
DC input socket
PHOENIX PC6-16/2-G1-10, 16
Audio input socket
3 pin PHOENIX 3,81mm
Audio output socket
5 pin PHOENIX 5,08mm
Nominal output voltage taps
V
0V31,6-50-70-100
0V31,6-50-70-100
RS485 interface
4 pin PHOENIX 3,81mm
Mechanical
Front panel width
mm
482
Back panel width
mm
445
Height
mm
88,5
Width
mm
370
Net. Weight
Kg
14
18
Gross weight (including packaging)
Kg
15,5
19,5
Package dimensions
mm
150x460x600

DPAfour Series User Manual
www.ateis-europe.com Page 10 of 11
8. Safety Declaration
•Do not expose the DPAfour to extreme temperatures, direct sunlight, humidity, or dust, which could
cause fire or electrical shock hazard.
•Keep away water or other liquids from the DPAfour, otherwise fire or electrical shock may result.
•This unit is equipped with a single pole disconnect device (fuse) in the phase (live) wire. If an un-polarised
mains connection is used, the receptacle the unit is connected to must be equipped with a two pole disconnect device
(fuse) of appropriate rating!
•Connect the power cord only to an AC outlet of the type stated in this Owner's Manual or as
marked on the unit, otherwise fire and electrical shock hazard results.
•When disconnecting the power cord from an AC outlet always grasp the plug. Never pull the cord.
A damaged power cord is a potential risk of fire and electrical shock hazard.
•Avoid touching power plugs with wet hands. Doing so is a potential electrical shock hazard.
•Observe the correct polarity when operating the DPAfour from a DC power source. Reversed
polarity may cause damage to the unit or the batteries.
•Avoid placing heavy objects on power cords. A damaged power cord is a fire and electrical shock
hazard.
•Do not cut, scratch, bend, twist, pull, or heat the power cord. A damaged power cord is a fire and
electrical shock hazard. Ask your ATEÏS dealer for replacement.
•Immediately turn off the unit, remove the power cord from the AC outlet and consult your ATEÏS
dealer in any of the following circumstances:
•Smoke, odour, or noise coming from the unit.
•Foreign objects or liquids falling inside the DPAfour.
•The unit has been dropped or the shell is damaged.
•The power cord is damaged.
If you continue using the DPAfour, fire and electrical shock may result.
•Do not drop or insert metallic objects or flammable materials into the unit as this may result in fire
and electrical shock.
•Do not remove the DPAfour 's cover, as there are exposed parts inside carrying high voltages that
may cause an electrical shock. Contact your ATEÏS dealer if internal inspection, maintenance, or repair is
necessary.
•Do not try to make any modifications to the DPAfour. This is a potential fire and electrical shock
hazard.
•Slots and openings in the unit are provided for ventilation. To ensure reliable operation and to
prevent overheating of the unit, these openings must not be blocked or covered!
•Leave enough space above and below the unit to provide good ventilation of the DPAfour. If the
airflow is not adequate, the DPAfour will overheat and may cause a fire.

DPAfour Series User Manual
www.ateis-europe.com Page 11 of 11
•To prevent the unit from falling and causing personal injury and/or property damage, avoid installing
or mounting the unit in unstable locations.
•Operate the DPAfour in an environment with a free-air temperature of between 0 °C and 55 °C (32
°F and 130 °F).
•Turn off all audio equipment when making any connections to the DPAfour, and make sure to use
adequate cables.
•Do not use benzene, thinner, or chemicals to clean the DPAfour. Use only a soft, dry cloth.
•If the DPAfour is moved from a cold place (e.g., overnight in a car) to a warmer environment,
condensation may form inside the unit, which may affect performance. Allow the DPAfour to acclimatize
for about one hour before use.
9. International sales and service points