Rockwell Automation 20B PowerFlex 700 Installation Instructions - Frames 0…6 - Manual (Page 44)

44 Rockwell Automation Publication 20B-IN019E-EN-P - July 2013
PowerFlex 700 Adjustable Frequency AC Drive – Frames 0…6
Table 9 - Recommended Power Jumper Configurations
To connect or disconnect these devices, refer to pages 45 through 51 .
In addition, on an ungrounded distribution system where the line-to-ground
voltages on any phase could exceed 125% of the nominal line-to-line voltage, an
isolation transformer must be installed. See Wiring and Grounding Guidelines
for PWM AC Drives, publication DRIVES-IN001 for more information on
impedance grounded and ungrounded systems.
Jumper Installation, Removal and Storage
PowerFlex 700 drives utilize plug-in style jumpers and jumper wires. Most drives
have a jumper storage area inside the front cover. Store extra jumpers or jumpers
that have been removed in this location for use at a later time.
Insulating Jumper Wires
Some drives are designed to utilize nylon screws and spacers to
insulate jumper wires from ground and secure them to the chassis.
The components must be installed as shown.
Power Source Type
(1)
(1) It is highly recommended to accurately determine the power source type and then configure appropriately.
MOV/Input
Filter Caps
(2)
(2) When MOVs are disconnected, the power system must have its own transient protection to ensure known and controlled voltages.
DC Bus
Common
Mode Caps
Benefits Of Correct Configuration
on Power Source Type
Solid Ground
• AC fed, solidly grounded
• DC fed from passive rectifier that
has an AC source and solid ground
Connected Connected • Reduced electrical noise,
• Most stable operation,
• EMC compliance,
• Reduced voltage stress on
components and motor bearings.
Non-Solid Ground
• AC fed ungrounded
• Impedance grounded
• High resistive ground
• B phase ground
• Regenerative unit such as common
DC bus supply & brake
• DC fed from an active converter
Disconnected Disconnected • Helps avoid severe equipment
damage when ground fault occurs.
IMPORTANT Common mode capacitors are used to conform with the EMC directives.
Removing these devices can withdraw the associated directive.