Rockwell Automation FlexPak Plus NRG DC Drive - Manual (Page 16)

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SECTION 4
STARTĆUP AND ADJUSTMENT
4.0 General - This Section provides startĆup and adĆ
justment procedures to be followed after the assembly
and installation of the controller is complete. All initial
operation checks and final adjustments to the controller
must be made in conformance to the procedures, warnĆ
ings and recommendations listed here.
DANGER
THE FLEXPAK PLUS CONTROLLER IS AT LINE
VOLTAGE WHEN AĆC LINE POWER IS CONĆ
NECTED TO THE POWER UNIT INSIDE THE
CONTROLLER. BEFORE WORKING ON, OR
TOUCHING ANY INTERNAL PARTS OF, THE
CONTROLLER, REMOVE INCOMING AĆC LINE
POWER AT THE MAIN DISCONNECT SWITCH.
PERSONAL INJURY MAY RESULT IF THIS
WARNING IS NOT FOLLOWED.
DANGER
DURING INITIAL STARTĆUP, THE CONTROLLER
AND ITS ASSOCIATED EQUIPMENT MUST BE
OPERATED AND/OR ADJUSTED ONLY BY
QUALIFIED ELECTRICAL MAINTENANCE PERĆ
SONNEL. THESE INDIVIDUALS SHOULD BE
FAMILIAR WITH THE DESIGN AND OPERATION
OF THIS EQUIPMENT AND WITH THE HAZARDS
INVOLVED. PERSONAL INJURY AND/OR DAMĆ
AGE TO THE CONTROLLER COULD RESULT
FROM UNFAMILIARITY.
4.1 Power Off Inspection - It is necessary to
make a superficial inspection of the FlexPak Plus conĆ
troller and its associated units. The purpose of this
check is to look for possible physical damage or imĆ
proper connections.
Inspect all plugĆin Modification Kits. Test each for a firm
mounting condition.
Each should be mechanically connected to the RegulaĆ
tor Module by means of a mounting post screw. Each
should be electrically connected to the Module by a seĆ
ries of parallel pins. If any of the pins are bent, improper
operation results. Examine the pins to make sure they
are perfectly parallel. Only one pin may fit through a hole
in the Kit.
Inspect all screw terminal connections on the ModificaĆ
tion Kits. Make sure the wires are firmly connected. Also
make sure that there is enough insulation on the wires
to prevent a short between the conductors.
Inspect the signal wiring from the Operator Control StaĆ
tion. A series of wires will connect to individual terminals
on a strip mounted on the Remote Operator Interface
Module. (This Module is mounted on the Regulator
Module.) Determine that all wires are firmly seated in the
terminal strip. Make sure all wires are connected.
4.2 Motor Ground Check - It may be necessary
to make a check of the drive motor to assure that no
damaging grounds - other than earth ground - exist
within the motor.
CAUTION: Although a megger may be used for this
test, if one is used, all conductors between the drive
motor and the FlexPak Plus controller are to be disĆ
connected and moved aside. The megger's high
voltage can cause damage to the controller's
circuits.
Step 1 - Attach one lead from the ohmmeter to the moĆ
tor frame to make a simple resistance check.
Step 2 - Touch the test probe to each of the two power,
two thermostat, and two field leads to the motor.
If the reading to ground on any terminal is less than
100,000 ohms, a ground condition exists.
Step 3 - If a ground condition exists, inspect the motor
thoroughly for internal shorts.
Step 4 - When the grounding condition is corrected,
reconnect the conductors from the FlexPak Plus conĆ
troller.
4.3 Power On Adjustments - Once all the preĆ
liminary powerĆoff static adjustments have been perĆ
formed with acceptable results, the aĆc line power is to
be applied to the controller, but the load is not conĆ
nected. It is important to follow these steps closely. ObĆ
serve all cautions and warnings.
DANGER
WITH AĆC POWER APPLIED AND WITH THE
POWER ON/OFF SWITCH IN THE ON POSIĆ
TION. HAZARDOUS VOLTAGE EXISTS IN THE
CONTROLLER. EXERCISE EXTREME CAUTION
WHEN PERFORMING THESE TESTS. PERĆ
SONAL INJURY CAN RESULT.