Rockwell Automation 25B PowerFlex 520-Series Adjustable Frequency AC Drive Quick Start - Manual (Page 2)

2 Rockwell Automation Publication 520-QS001A-EN-E - March 2014
PowerFlex 520-Series Adjustable Frequency AC Drive
General Precautions
ATTENTION:
• Before installing, configuring, operating or maintaining this product, read this document and the documents
listed in the Additional Resources section for installing, configuring, or operating equipment. Users should
familiarize themselves with installation and wiring instructions in addition to requirements of all applicable
codes, laws, and standards.
• Installation, adjustments, putting into service, use, assembly, disassembly, and maintenance shall be carried out by suitably
trained personnel in accordance with applicable code of practice.
• If this equipment is used in a manner not specified by the manufacturer, the protection provided by the equipment may be
impaired.
• Solid state equipment has operational characteristics differing from those of electromechanical equipment. Safety Guidelines for
the Application, Installation and Maintenance of Solid State Controls, publication SGI-1.1, available from your local Rockwell
Automation sales office or online at
http://www.rockwellautomation.com/literature describes some important differences
between solid state equipment and hard-wired electromechanical devices.
ATTENTION: The drive contains high voltage capacitors which take time to discharge after removal of mains supply. Before
working on drive, ensure isolation of mains supply from line inputs [R, S, T (L1, L2, L3)]. Wait three minutes for capacitors to
discharge to safe voltage levels. Failure to do so may result in personal injury or death.
Darkened display LEDs is not an indication that capacitors have discharged to safe voltage levels.
ATTENTION: Only qualified personnel familiar with adjustable frequency AC drives and associated machinery should plan or
implement the installation, start-up and subsequent maintenance of the system. Failure to comply may result in personal injury
and/or equipment damage.
ATTENTION: This drive contains ESD (Electrostatic Discharge) sensitive parts and assemblies. Static control precautions are
required when installing, testing, servicing or repairing this assembly. Component damage may result if ESD control procedures are
not followed. If you are not familiar with static control procedures, reference A-B publication 8000-4.5.2, “Guarding Against
Electrostatic Damage” or any other applicable ESD protection handbook.
ATTENTION: An incorrectly applied or installed drive can result in component damage or a reduction in product life. Wiring or
application errors, such as undersizing the motor, incorrect or inadequate AC supply, or excessive ambient temperatures may result
in malfunction of the system.
ATTENTION: The bus regulator function is extremely useful for preventing nuisance overvoltage faults resulting from aggressive
decelerations, overhauling loads, and eccentric loads. However, it can also cause either of the following two conditions to occur.
1. Fast positive changes in input voltage or imbalanced input voltages can cause uncommanded positive speed changes;
2. Actual deceleration times can be longer than commanded deceleration times
However, a “Stall Fault” is generated if the drive remains in this state for 1 minute. If this condition is unacceptable, the bus
regulator must be disabled (see parameter A550 [Bus Reg Enable]). In addition, installing a properly sized dynamic brake resistor
will provide equal or better performance in most cases.
ATTENTION: Risk of injury or equipment damage exists. Drive does not contain user-serviceable components. Do not disassemble
drive chassis.