Frame 2 Installation 2-11
PowerFlex® 700L Liquid-Cooled Drive User Manual
Publication 20L-UM001D-EN-P
Grounding the Drive
The customer must supply a grounding conductor between the ground lug
of the drive and the ground lug in the cabinet. For PE ground terminal
location, refer to Figure 2.15
. Tighten the ground connection to the
recommended torque shown in Table 2.B
.
Ungrounded or Resistive
Grounded Installations
PowerFlex 700L Frame 2 drives are equipped with a common mode
capacitor and MOV that are referenced to ground. To guard against drive
damage, this capacitor and MOV should be disconnected if the drive is
installed on a resistive ground or ungrounded distribution system.
Disconnecting the Common Mode Capacitor
To disconnect the 1 µF common mode capacitor from the circuit, refer to
Figure 2.11
and:
1. Disconnect the Faston wire from the 1 µF common mode capacitor.
2. Insulate the wire end by applying a wire nut or electrical tape.
3. Tie wrap the disconnected wire to keep it away from any electrical
connections.
Disconnecting the MOV from Ground
To disconnect the MOV from ground, refer to Figure 2.11 and:
1. Unbolt the ground wire lug from the MOV’s ground connection point.
Screw the bolt back into the panel.
2. Cut the lug off the disconnected ground wire and apply a wire nut to its
end.
3. Tie wrap the disconnected ground wire to keep it away from any
electrical connections.
Refer to Wiring and Grounding Guidelines for Pulse Width Modulated
(PWM) AC Drives (publication DRIVES-IN001) for more information on
ungrounded distribution systems. Note: Removing the Common Mode
capacitor and input MOVs makes the drive more vulnerable to high voltage
line spikes.
!
ATTENTION: The user is responsible for conforming with all
applicable local, national, and international codes. Failure to
observe this precaution could result in damage to, or destruction
of, the equipment.
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