CHAPTER 7
MAINTENANCE
Entire Contents Copyright 2004 by Adaptive Power Systems, Inc. (APSI) • All Rights Reserved • No reproduction without written authorization from APSI.
APS-3000P Series 7 - 2 OM-001-03000-00P-03.9
System Design
APS-3000P Series power converters are high power Pulse Width Modulated (PWM)
switching amplifiers. The internal switching frequency is 10 kHz. This frequency is
200 times higher than the lowest operating frequency (50 Hz) and 25 times higher than
the highest operating frequency (400 Hz). The choice of switching frequency provides
high resolution and ensures removal of high frequency harmonics. The all-digital
control circuitry meters and displays system outputs, in addition to generating control
signals. The system is microprocessor-based. Firmware in a proprietary EEPROM
allows APS-configuration upgrades.
THIS EQUIPMENT CONTAINS HIGH ENERGY, LOW IMPEDANCE CIRCUITS!!
LETHAL POTENTIALS ARE CONTAINED WITHIN THE CABINET.
CARE MUST BE EXERCISED WHEN SERVICING THIS EQUIPMENT
IN ORDER TO PREVENT SERIOUS OPERATOR INJURY OR EQUIPMENT DAMAGE.
OBSERVE THE FOLLOWING --- WHEN SERVICE AND MAINTENANCE ARE REQUIRED:
• REMOVE ALL JEWELRY FROM ARMS AND NECK WHEN SERVICING THIS EQUIPMENT.
THIS PREVENTS THE POSSIBILITY OF SHORTING THROUGH THE JEWELRY AND CAUSING
BURNS TO THE OPERATOR.
• WEAR SAFETY GLASSES WHEN SERVICING THIS EQUIPMENT TO PREVENT EYE INJURY
DUE TO FLYING PARTICLES CAUSED BY ACCIDENTAL SHORT CIRCUIT CONDITIONS.
• DO NOT REMOVE ANY PANEL OR COVER WITHOUT FIRST REMOVING THE INPUT POWER
BY OPENING ALL CIRCUIT BREAKERS.
• SERVICE OTHER THAN EXTERNAL CLEANING SHOULD BE REFERRED TO PERSONNEL
AUTHORIZED BY THE FACTORY TO SERVICE THIS EQUIPMENT. THERE ARE NO USER-
SERVICABLE INTERNAL PARTS.
System Block Diagram
If you are interested in how the APS-3000P works, you can learn more by reviewing
the System Block Diagram on the following page. Please note, the block diagram is
supplied for information purposes only. There are no serviceable components available
to the user.
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