Rockwell Automation MinPak Plus DC Drive User Manual - Manual (Page 32)

5:1
5: Troubleshooting
General
DANGER
ONLYQUALIFIED ELECTRIĆ
CAL PERSONNEL FAMILIAR
WITH THE CONSTRUCTION
AN OPERATION OF THIS AND
THE HAZARDS INVOLVED
SHOULD INSTALL, ADJUST,
AND/OR SERVICE THIS
EQUIPMENT. READ AND UNĆ
DERSTAND THIS MANUAL IN
ITS ENTIRETYBEFORE PROĆ
CEEDING. FAILURE TO OBĆ
SERVE THIS PRECAUTION
COULD RESULT IN SEVERE
BODILYINJURYOR LOSS OF
LIFE.
This Section details troubleshooting
information for the MinPak Plus
Single Phase DĆC Drive. Figures 5Ć1
and 5Ć2 show the controller
schematic and technical data.
DANGER
SERVICING IS DONE WITH
POWER ON. EXERCISE EXĆ
TREME CARE AS HAZARDĆ
OUS VOLTAGE EXISTS. FAILĆ
URE TO OBSERVE THIS
PRECAUTION COULD REĆ
SULT IN SEVERE BODILY
INJURYOR LOSS OF LIFE.
Wiring Errors
Wiring errors, loose or grounded
wiring are common problems
encountered inhibiting operation of
a drive. Verify installation wiring has
been correctly executed and that
the controller is free of loose
terminations and grounded
conductors.
AĆC Line and Power
Input
Verify that the applied AĆC power is
correct for the specific drive, i.e.
either 115 or 230 volts. If the drive is
being applied on 50HZ power,
ensure that the Wire AĆC Power to
the Controller" setĆup procedure of
section 4 in this instruction manual
has been properly followed. If an
isolation transformer has been
installed on the incoming AĆC
power, verify it's output voltage and
that it has been properly connected.
Verify that the AĆC line fuses have
been correctly sized per Table 2Ć3.
The AĆC and DĆC power conductors
should have been sized per the
National Electric Code.
DĆC Motor
CAUTION: a meggar may be
used for this motor ground
check, but all conductors beĆ
tween the motor and the drive
must be disconnected. The
meggar's high voltage can
cause serious damage to the
drives electronic circuits. FailĆ
ure to observe this precaution
could result in damage to, or deĆ
struction of, the equipment.
Recheck all motor connections for
firmness and correct identification.
Verify that there is no path to
ground in either the DĆC motor
armature circuit, the shunt field
circuit or the thermostat circuit.
Connect one lead of a standard
ohm meter to the motor frame and
the other lead to the two armature
leads, the two thermostat leads and
to the two field leads. If a reading of
less than 100,000 ohms is
observed, a ground condition exists
and MUST be corrected before
power is applied. Check that the
field winding is not open or shorted.
Verify the continuity of the motor
thermostat and its proper
connection to controller terminals
32 and 132. If a motor overload has
been installed, verify that it's circuit
maintains continuity in the 32 to 132
circuit.
Remote M Contactor
When the M Contactor has been
supplied by others, verify that the
connection of those circuits is
according Figure 3Ć5 or Figure 3Ć6.
The harnesses must be correctly
wired to the regulator pin
connectors.
Optional Kits
Verify that each of the added
optional kits have been installed
correctly according to the
appropriate instructions. Reference
Figure 5Ć3 for schematics of
modification kits.
Troubleshooting
Flowcharts
These troubleshooting flowcharts
are provided to assist in the analysis
of drive operational problems.
Flowcharts are not all inclusive, this
information is intended to focus
attention on common causes of
drive problems and to bring
attention to possible causes and
checking techniques. See Figures
5Ć4 through 5Ć9 for available
troubleshooting flowcharts.