Rockwell Automation WebPak 3000 DC Drives Hardware Reference, Installation and Troubleshooting - Manual (Page 33)

C
HAPTER
3
Drive Setup and Adjustment 3-1
Drive Setup and Adjustment
ATTENTION: Only qualified electrical personnel familiar with the construction and
operation of this equipment and the hazards involved should install, adjust, operate
and/or service this equipment. Read and understand this section in its entirety
before proceeding. Failure to observe this precaution could result in bodily injury or
loss of life.
3.1 Perform a Power Off Inspection
Inspect the Drive and modification kits for possible physical damage or improper connections.
Verify that the wiring of the operator's station and the wiring to the Drive is made with sufficient
bare wire to make a good electrical connection. The removal of an excessive length of
insulation may needlessly expose conductors resulting in the possibility of shorts or safety
hazards.
3.2 Test Equipment Needed
ATTENTION: Do not use a megohmmeter for continuity checks in the drive. The
high voltage of the megohmmeter can damage the drive's electronic circuits.
Failure to observe this precaution could result in damage to, or destruction of, the
equipment.
A volt-ohmmeter having a sensitivity of 20,000 ohms per volt may be used.
3.3 Perform a Motor Ground Check
ATTENTION: A megohmmeter can be used for this motor ground check, but all
conductors between the motor and the drive must be disconnected. The
megohmmeter’s high voltage can damage the drive's electronic circuits. Disconnect
all conductors between the motor and the drive before using a megohmmeter for
this motor ground check. Failure to observe this precaution could result in damage
to, or destruction of, the equipment.
The DC Motor frame and conduit box should be connected to a good earth ground per the
motor instruction manual.
Verify that there is no path to ground in either the DC Motor armature circuit, the shunt field
circuit or the thermostat circuit. Connect one lead of a standard ohm reading meter to the motor
frame and the other lead to the two armature leads, then to the two field leads and to the two
thermostat leads. If a reading of less than 100,000 ohms is observed, a ground condition exists
and MUST be corrected before power is applied.