GE Industrial Solutions AF-600 FP Redundant Drive Panels - Manual (Page 10)

DEH40634 AN 11-1018 Rev.02, 09/26/2011
1. Operator Devices
Your Redundant Drive panel is equipped with several panel door mounted operator devices, which may
include the following: one (1) through-the-door, lockable, input device disconnect handle; two (2) operator
selector switches; and five (5) indicator lights. The operation of these devices is explained in this section. Refer
to the Drive Terminal Board I/O section of this manual and wiring diagrams for specifics on wiring
connections.
Input Disconnect
The purpose of the panel-mounted input disconnect with through-the-door
handle is to provide a local, lockable method of removing all AC input power
from the Redundant Drive panel and AF 600 FP drive.
If your panel includes a Non-fusible Disconnector/Fusible Disconnector, in
addition to providing a manual method of applying and removing AC input
power from the Redundant Drive panel, the Disconnector also provides short
circuit protection for the panel components and the motor.
Drive1-Off- Drive2 The setting of this selector switch determines whether power to the motor will
be from the adjustable frequency drive1 (“Drive1” position) or from drive2
(“Drive2” position). This selector can be changed “on-the-fly” without first
completely stopping the motor. However, when changing from “Drive1” to
“Drive2” mode a short delay is required to be inserted by the operator
(approximately 10 seconds) to allow time for the motor’s rotor flux to decay.
.
WARNING: Although input power is removed from the drive in
the “Off” position this does not guarantee that dangerous voltage levels
are absent. The AF 600 FP drives contain capacitors, which can maintain
dangerous voltage levels for an extended period following removal of AC
input power.
Before touching any potentially live parts of the frequency inverter or
drive, it is always advisable to wait at least 20 mins if not specified.
380-480V, 150-300 HP, wait at least 20 minutes
Shorter time is allowed only if indicated on the nameplate for the
specific unit.
Do not manually drain capacitors.
Always check bus voltage with proper meter before working on drive.
NOTE: In the event of a drive1 fault need to move switch to “drive2”
from “drive1” Vice-versa.
WARNING: Potential arc flash and shock hazard
Do not perform any maintenance/work when panel is
Energized. Follow local work rules and proper Personal
Protective Equipment (PPE).
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