AXYS IndustryAmp PB-800

Transcription

1 AXYS IndustryAmp PB-800 Datasheet by Geert de Vries

2 IndustryAmp PB-800 datasheet User s Notice: No part of this document including the software described in it may be reproduced, transmitted, transcribed, stored in a database system or translated without the express written permission of Duran Audio BV. Documentation kept by the end-user for backup purposes is excluded from the above mentioned. All products and corporate names mentioned in this document may be registered trademarks or copyrights of their respective companies. They are used here for indicative purposes only. The information contained in this document has been carefully checked for accuracy, however no guarantee is given with respect to the correctness. Duran Audio BV accepts no responsibility or liability for any errors or inaccuracies that may appear in this document or the products and/or software described in it. Specifications and information contained in this document are subject to change at any time without notice. is a registered trademark of Koxkampseweg 10 P.O. box CB Zaltbommel the Netherlands Phone: Fax: info@duran-audio.com /GdV/PB800_1.0/1.0

3 IndustryAmp PB800 intelligent power amplifier unit. General. The PB800 is a multi channel power amplifier that is intended for use in distributed 70V/100V professional Audio installations. The unit is composed of a high power switch mode supply, eight separate power amplifiers and a 2-in, 8-out digital signal processor unit. The unit is accommodated in a 3 HE 19 rack enclosure. Amplifiers. The full complementary class B amplifiers are equipped with rugged industrial power mosfet devices capable of handling large currents without risk of failure. The large phase margin within the feedback loop keeps the amplifiers stable under any load condition. Power supply. The PB800 is equipped with a high-power switch mode power supply. The power supply is specially designed for audio applications, featuring soft knee over current protection and very high peak power capability. Active power factor correction keeps the mains harmonics at low levels while increasing the input voltage range from 90V to 270V without interruption or manual changeover. A low-power stand-by switch mode auxiliary supply enables shut down of the main supply under network control. Signal processing unit. A digital signal processor unit controls the amplifier units. The board contains 2 analog audio inputs and 8 analog outputs. A digital AES/ABU input is optional. The digital processing is performed by a 32 bit floating point DSP. The DSP software provides various functions in order to attenuate, delay, equalize, filter, compress or limit the separate audio signals for all individual output channels, or perform special algorithms necessary for dedicated active array control. All software is stored in non-volatile memory, enabling the unit to start up and operate autonomous without host control unit. Audio AD and DA conversion is performed by high performance 18bit 50Ksample converters. A dedicated DLC (dynamic level control) circuit prevents the AD converter input from being overdriven. Surveillance. The surveillance routines are performed by a RISC (reduced instruction set computer) which is located on the processor board. It monitors a large amount of surveillance related parameters. These include: pilot tone detection on both inputs, load monitoring on each output, temperatures of heat sink and ambient, amplifier functionality, fan speed, ambient noise sensing microphone presence and DSP status. The RISC software enables the PB800 to take intelligent autonomous decisions such as switching to a second input channel in case a pilot tone is lost, or acoustical output level adaptation the to the ambient noise level without any central intervention. All possible reported failures can be mapped onto a dedicated free-floating failure relay /GdV/IPB800_1.0/1.0 3

4 Inputs and Outputs. All power-amplifier outputs are equipped with high-grade toroidal output transformers to provide 100V/70V/ 50V outputs. Two 50V windings can be put in series in order to combine two amplifier channels to one channel with double power rating. All loudspeaker terminals are protected by means of gas discharge devices against voltage spikes. Both inputs are transformer insulated and can be adapted to interface at 0dBV level or 100V input. Network. The RISC also manages the network functionality of the device. This network is based on a RS485 full duplex party-line hardware platform in which each PB800 has its own address. By using a host PC, the user can monitor all surveillance related parameters, send one line control commands or upload new DSP code or process settings to any combination of addresses. All surveillance related and DSP related software inside the PB800 is stored in non-volatile RAM, restoring the last settings automatically after power up. 2 in 8 DSP matrix FET amplifiers Impedance surveillance circuits High power Output relays transformers Surge protection Input transformer RS485 Optical isolated interface Failure relay Output termination block Mains power Power supply unit fig. 1 Functional diagram of the PB /GdV/PB800_1.0/1.0

5 Specifications Electrical: Inputs - Sensitivity 0 dbu (line input) and +36 dbu (100V input) - Type Transformer balanced - Impedance (balanced) 6800 Ω (line input) and 2 MΩ (100V input) - CMRR 1KHz, 50Hz DSP module - Type 32-bit floating point, 50 MFLOPS - Memory 32k/128k words SRAM, 2 x 8k bytes EEPROM - ADCs 2 - channel 18 bit sigma-delta converters - DACs 8 - channel 18 bit sigma-delta converters - Sample frequency 48.8 khz - Signal processing - Pre-delay (< 335 bit, < bit) - Equalizer and compensation filtering - Noise gate - Gain and autogain adaptation Control unit - Network interface type Serial full-duplex RS-485, 19k2 baud, optically isolated - Maximum number of units 126 units and 1 controlling device (host PC) - Remote surveillance - General status (DSP running, signal present etc.) - Individual amplifier monitoring scheme - Load impedance monitoring (short, open) - Fan speed - Temperature heatsink - Temperature ambient - Ambient SPL - Pilot tone detection (individual inputs) - Remote control - DSP functionality (software) - DSP parameters (gain, equalizer etc.) - Zone settings - Autogain parameters - Shut down main power supply - Failure - Bypass mode - Failure detect relay (with external connector) - Load surveillance min detection threshold - Load surveillance pilot freq. 22KHz - Load surveillance pilot level 22KHz - Pilot tone detection threshold 5V rms - Pilot tone detection capture range <26dBV - Failure relay 19KHz-28KHz SPDT 1A / 100V max failure relay status indicated at front by bi-color LED Power amps - Type Full complementary FET class B - Power 100 W rms /channel - Protection - Thermal, intelligent power reduction - Safe operating area (SOAR) - DC failure - Mains undervoltage/overvoltage - Power supply overload - Voltage spikes on all inputs and outputs - Output transformers - Toroidal - Taps - 70V, 100V (50V internal) - Nominal load - 70V - Loudspeaker terminal Surge protection clamping /GdV/IPB800_1.0/1.0 5

6 Power supply AXYS IndustryAmp PB-800 data sheet rev 20KA Switch-mode, power factor correction, standby supply - Mains voltage 90 to 270V - Power consumption - 60 W idle PF W standby (main power supply shut down) - 110W load monitoring active (all outputs 100Ohms) VA peak PF Max. inrush current at cold switch on 20A during 1 mains period Long term mains current limited to 6A rms by means of a resetable over current protection integrated in mains switch. General: Dynamic range >89dB THD 1KHz 50Vrms in 100Ohms 50Hz 10KHz 50Vrms in 100Ohms Connections RS485 Wago series 231 Audio inputs Wago series 231 Failure Wago series 231 Ambient noise and remote temp. Sensor Loudspeaker output terminals (0-70V-100V) Wago series 231 Mains Wago cage clamp series 256 ( mm²) Neutric Powercon Temperature range (ambient) 0 to 40 o C Dimensions (H x W x D) 3HE 19 enclosure 132 x 484 x 335mm Weight Finish 22.7 kg Nickel plated /GdV/PB800_1.0/1.0

7 fig. 2 Rear view of the IndustryAmp PB /GdV/IPB800_1.0/1.0 7

8 is a registered trademark of Koxkampseweg 10 P.O. box CB Zaltbommel the Netherlands Phone: Fax: info@duran-audio.com