Rockwell Automation 20L PowerFlex 700L Frame 1X Liquid-Cooled Adjustable Frequency AC Drive - Manual (Page 22)

PowerFlex 700L Frame 1X Drive Installation Instructions – Publication 20L-IN013A-EN-P – June 2009
22
The PowerFlex 700L Frame 1X drive contains protective MOVs and
common mode capacitors that are referenced to ground. To guard against
drive damage and/or operation problems, these devices must be properly
configured according to
Table 7 .
Figure 7 MOV and AC EMI Capacitor Phase to Ground
Figure 8 Common Mode Capacitors to Ground
Table 7 Recommended Power Jumper Configurations
Disconnecting MOVs and Common Mode Capacitors
!
ATTENTION: The PowerFlex 700L Frame 1X drive contains
protective MOVs and common mode capacitors that are
referenced to ground. To guard against drive damage, these
devices must be disconnected if the drive is installed on an
ungrounded, impedance or phase-grounded distribution system.
See
Table 7 for recommended jumper configurations.
!
ATTENTION: PE-A, PE-B, and PE-C jumpers must be
configured according to the recommendations in
Table 7 . The
PE-D and PE-E power jumpers must always remain connected.
R/L1
S/L2
T/L3
1
2 3 4
PE–A
1
2 3 4
PE–C
DC+
DC– PE–B
Power Source Type (1)
MOV
(PE-A)
(2)
DC Bus
Common Mode
Caps (PE-B)
Input Filter
Caps (PE-C)
Bridge
Circuit Bd
Gnd (PE-D) RTD Circuit
Bd Ground
(PE-E) Benefits Of Correct
Configuration on Power
Source Type
Unknown Connected
(3)
Disconnected
(3)
Connected
(3)
Connected
(3)
Connected
(3)
See below.
• AC fed Solidly Grounded
• DC fed from passive rectifier
which has a Solidly Grounded
AC source
Connected Connected Connected UL compliance,
Reduced electrical noise,
Most stable operation,
EMC compliance,
Reduced voltage stress on
components and motor bearings
• AC fed Ungrounded
• Impedance Grounded
• DC fed from an active converter Disconnected Disconnected Disconnected Helps avoid severe equipment
damage when ground fault
occurs
(1) It is highly recommended to accurately determine the power source type and then configure appropriately.
(2) When MOVs are disconnected, the power system must have its own transient protection to insure known and controlled voltages.
(3)
This is the factory default configuration. NOTE: The PE-D and PE-E power jumpers must be connected regardless of the power source type.