Rockwell PowerFlex 70 User Manual

Installation/Wiring 1-11
PowerFlex 70 drives contain protective MOVs and common mode
capacitors that are referenced to ground. To guard against drive damage,
these devices should be disconnected if the drive is installed on an
ungrounded distribution system where the line-to-ground voltages on
any phase could exceed 125% of the nominal line-to-line voltage. To
disconnect these devices, remove all the jumper(s) shown in the figure
and table below. See the Wiring and Grounding Guidelines for Pulse
Width Modulated (PWM) AC Drives, publication DRIVES-IN001, for
more information on ungrounded system installation.
Figure 1.6 Typical Jumper Locations (C Frame Shown)
Figure 1.7 Phase to Ground MOV Removal
Figure 1.8 Common Mode Capacitors to Ground Removal
Disconnecting MOVs and Common Mode Capacitors
!
ATTENTION: To avoid an electric shock hazard, verify that the
voltage on the bus capacitors has discharged before removing/installing
jumpers. Measure the DC bus voltage at the +DC terminal of the Power
Terminal Block and the -DC test point. The voltage must be zero.
Frame Jumper Removes
A, B, C and D JP3 – JP2 MOV to Ground
E JP2 – JP1 MOV and Line to Line
Capacitors to Ground
Frame Jumper Removes
AN/A
B JP6 – JP5 Common Mode Capacitors to Ground
C and D JP3B – JP3A Common Mode Capacitors to Ground
E JP3 – JP4 Common Mode Capacitors to Ground
JP3 JP2
JP3A
JP3B
R
S
T
123 4
Three-Phase AC Input
Jumper
(See Table)
DC+
DC–
Converter
Common
Mode
Capacitors
Jumper
(See Table)

Rockwell PowerFlex 70 Specifications

General

Brand	Rockwell
Model	PowerFlex 70
Category	Controller
Language	English