GE VALUTROL MAIN CONTROL MODULE Instructions Manual page 11

START-UP
The V ALUTROL main control module is factory tested
with the complete drive system.
It
is ready to operate
provided the external power and control connections have
been properly made and the following step by step
procedures are followed:
1. Verify that the terminal board screws are tight.
2.
Verify that incoming power is the proper voltage and the
incoming wiring is complete and correct.
3.
If the diagnostic option is furnished set the diagnostic
switch to its NORMAL (center) position. Apply power
to the drive. If the green "Ready to Run" light located
on the lower left hand corner of the main control card
(MCC) is not illuminated, press and release the RESET
pushbutton on the panel below.
If
the light does not turn
on, the most probable cause is incorrect incoming phase
rotation. Remove power, reverse any two of the
incoming AC power leads and repeat.
4.
Verify that the reference voltage, SR, from 2TB(28) to
2TB(27) is variable with the external speed adjust
potentiometer. Return the potentiometer to zero volts.
5. If
the diagnostic card option is provided, set the local
speed reference
(lOe REF)
potentiometer to its center
position and switch into the diagnostic run
(OIAtJ RUN)
position. The MA or MD contactor should pick up.
Slowly turn the
LOe REF
potentiometer away from the
control until the motor starts to rotate.
If the
tachometer feedback option was selected verify that the
speed feedback signal appears on the SFB test point,
located on the bottom of the main control card (MCC) on
the left hand side has electrical polarity opposite to
signal LR from
(LOe REF).
Check motor rotation.
Check tachometer polarity. Turn the
LOC REF
potentiometer back to the center position and switch to
NORMAl.
If
the motor rotation was incorrect, remove
power and interchange the motor field connections Fl
and F2 on TBN terminal board.
6. If no diagnostic card is available set the external speed
reference potentiometer to zero volts and press the
START pushbutton. The MA or MD contactor should
pick up. Slowly turn the speed reference until the motor
starts to rotate. Check motor rotation.
If
incorrect,
remove power and interchange the motor field leads Fl
and F2 on TBN terminal board.
GEK·24994
7. Run the drive from the external speed reference up to
top speed. Adjust
MAX SPEED
as may be required. DO
NOT OVERSPEED.
8. Close and secure the doors of the power unit.
NOTE
ALWAYS READ THE COMPLETE INSTRUCTIONS
PRIOR TO APPLYING POWER OR TROUBLESHOOT-
1NG THE EQUIPMENT. FOLLOW THE START UP
PROCECURE STEP BY STEP.
READ AND HEED ALL WARNING, CAUTION, AND
NOTE LABELS POSTED ON THE EQUIPMENT.
WARNING: HIGH VOLTAGE
ELECTRIC SHOCK CAN CAUSE PERSONAL INJURY
OR LOSS OF LIFE. WHETHER THE AC VOLTAGE
SUPPLY IS GROUNDED OR NOT, HIGH VOLTAGE
TO
GROUND WILL BE PRESENT AT MANY POINTS.
WHEN TEST INSTRUMENTS ARE USED TO WORK
ON LIVE EQUIPMENT, GREAT CAUTION MUST BE
USED. WHEN ONE OF THE INSTRUMENT LEADS IS
CONNECTED TO THE CASE OR OTHER METAL PARTS
OF THE INSTRUMENT,
THIS LEAD SHOULD NOT
BE CONNECTED TO AN UNGROUNDED PART OF
THE SYSTEM UNLESS THE INSTRllMENT IS
ISOLATED FROM GROUND AND ITS METAL
PARTS TREATED AS LIVE EQUIPMENT. USE
OF
AN INSTRUMENT HAVING BOTH LEADS ISOLATED
FROM THECASEPERMITGROUNDINGOFTHECASE,
EVEN WHEN MEASUREMENTS MUST BE MADE
BETWEEN TWO LIVE PARTS.
CAUTION
DO NOT REMOVE PRINTED CIRCUIT CARDS FROM
THE EQUIPMENT WHILE POWER IS APPLIED. THIS
CAN DAMAGE THE EQUIPMENT.
11