Allen-Bradley 20A Installation Instructions Manual

Rockwell Automation Publication 750-IN011F-EN-P - June 2017 3
PowerFlex 750-Series Power Jumpers
To connect or disconnect these devices, refer to pages 5…7.
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, install an isolation transformer. See Wiring and Grounding Guidelines for PWM AC
Drives, publication DRIVES-IN001
, for more information on impedance grounded and ungrounded systems.
Recommended Power Jumper Configurations – Frames 1…7
Power Source Type
Jumper PE-A
(1) (2)
(MOV / Input Filter Caps)
(1) When MOVs are disconnected, the power system must have its own transient protection to maintain known and controlled voltages.
(2) Frame 5…7 Common DC Input drives do not have the PE-A jumper.
Jumper PE-B
(DC Bus Common Mode Caps)
Benefits of Correct Configuration on Power Source Type
Non-solid Ground
• AC fed ungrounded
• Impedance grounded
• B phase ground
• DC fed from an active
converter
Disconnected Disconnected Helps avoid severe equipment damage when ground fault occurs.
Solid Ground
• AC fed solidly grounded
• DC fed from passive rectifier,
which has a solidly grounded
AC source
Connected Connected
Reduced electrical noise, most stable operation, EMC compliance, reduced voltage stress on components
and motor bearings.
Recommended Power Jumper Configurations – Frames 8…10
Power Source Type
Jumper PE-A1
(1)
(MOV)
(1) When MOVs are disconnected, the power system must have its own transient protection to Achieve known and controlled voltages.
Jumper PE-A2
(Input Filter Caps)
Jumper PE-B
(DC Bus Common Mode Caps)
Benefits of Correct Configuration on Power Source Type
Non-solid Ground
• AC fed ungrounded
• Impedance grounded
• B phase ground
• DC fed from an active converter
Disconnected Disconnected Disconnected Helps avoid severe equipment damage when ground fault occurs.
Solid Ground
• AC fed solidly grounded
• DC fed from passive rectifier,
which has a solidly grounded
AC source
Connected Connected Connected
Reduced electrical noise, most stable operation, EMC compliance, reduced voltage
stress on components and motor bearings.
IMPORTANT Common mode capacitors are used to conform with the EMC Directives. Removing these devices can withdraw the associated directive.

Allen-Bradley 20A Specifications

General

Brand	Allen-Bradley
Model	20A
Category	Controller
Language	English