MPA SERIES POWER AMPLIFIERS
The ETS Solutions MPA Series amplifier family is a wide frequency band digital switching (Class D) Power Amplifier designed with latest state-of-the-art technology. A number of builtin features in the amplifier allow vibration testing to be simple and easy.
The MPA amplifier series are made for continuous operation with each configuration adaptable to any existing or new air-cooled / water cooled electro dynamic shaker. Amplifier outputs range from 1kVA to 300 kVA.
PERFORMANCE
High conversion efficiency (greater than 90%) for energy saving
High modulation switching frequency
Low total harmonic distortion (< 0.5% at typical testing frequency)
High signal to noise ratio (> 65%)
Exceeds ISO Peak current rating of 4-Sigma
USER INTERFACE
Intelligence microprocessor logic control and monitoring system
Interactive system interface
Green back lit LCD for system status and diagnostic messages
Auxiliary Interlock Unit (AIU) for additional safety interlock I/O points (Optional)
Remote control panel via RS485 communication (Optional)
SAFETY AND RELIABILITY
Soft-Start and Soft-Stop circuits
Detailed scope of system interlock protections
International compliance to safety and EMC standards
Totally air cooled amplifier designed for continuous and safe thermal operation
All-encompassing fuse protection for high current system components
Designed to reduce reliance on mechanical switch gears with CPU logic controlled
Complies with USA, European and International safety and EMC regulations
SYSTEM MAINTENANCE
12 kVA power modules configured with two self-reliant sub 6 kVA modules
Interchangeable compact size power modules
Space saving compact size designs
Easy maintenance and rapid servicing
Worldwide spare parts support
POWER MODULE
Modular and compact sized power output modules are designed with the latest solid state MOSFET technology to ensure optimum performance reliability and overall system efficiency (> 90%). Pulse-width modulated commands from the logic module drive the power modules conversion of DC power rectified from AC line power into variable amplitude and frequency driving power for the shaker. Switching command signals are optically isolated and routed via a ribbon cable. Ample heat sinking and cooling fans are incorporated to allow continuous safe thermal operation. Output driven at rated 120 V rms voltage and 50 A current per module with reserve capacity to provide peak currents of at least 3 times the RMS levels. Designed to reduce the loss of power during a failed component, the 12 kVA power module is made up of two self-reliant 6 kVA sub modules. Each sub module operates independently in the event when the other is out of action. Built-in operation and fault LED lights provide a quick source to identify the failed sub module.
LOGIC CONTROL UNIT
Managed by high-speed microprocessor logic unit, the intelligence logic control system assures high output power with maximum safety protection. High switching frequency delivers low distortion with full power output over a broad frequency band.
Control logic modulator handles generation of pulse-width modulated driving commands to the power output modules. System digital and analogue feedbacks are optically isolated and processed by the highspeed microprocessor unit. System status and fault indications are realtime displayed on the green back lit LCD panel. Fault occurrences are relayed as interactively on the LCD panel with alarm indication. Solid state relay ensures electrical power control. Power modules operating status are on-line monitored by the control logic modulator. Any over-current, short-circuit or over-temperature situation will prompt an instantaneous system halt. An optional remote control panel can be connected to the logic module via RS485 communication port. The remote control panel allows full system control at a distance control room of up to 500m.
