Rockwell Automation 1397 DC Drive Firmware 2.xx - Manual (Page 78)

4–6 Start–Up and Adjustment
Publication 1397-5.0 — June, 2001
!
ATTENTION: A megohmeter can be used for this
ground check, but all conductors between the motor
and the Drive must be disconnected. The
megohmeter’s high voltage can damage the Drive’s
electronic circuits. Disconnect all conductors between
the motor and Drive before using a megohmeter 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.
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 an ohmmeter 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.
Verify that the Drive has been installed and wired per the installation
instructions listed in Chapter 2, Installation. Of particular
importance are the following:
• Drive Mounting
• Safety Grounds
• General Wiring
• Secure mounting of all connections and components
!
ATTENTION: Failure to follow wiring guidelines set
forth in Chapter 2 Installation, may result in machine
malfunction or personal injury.
Record Data
To assist with Start-Up, the information listed in the Pre-Power
Checklist Table must be recorded. This information includes:
• Drive Nameplate Data.
• Motor Nameplate Data.
• Tach/Encoder Data (if applicable).
• Field Supply Type.
• Installed drive options such as AC line disconnects, dynamic
braking, etc.
IMPORTANT: Record all Regulator Board & Option jumper
settings for future reference when replacing parts.
Motor Ground Check
Pre–Power Checks