DeLUX DPX12T, Installation & Operation Manual

Page: 93 / 383

SECTION 9
9-25
01/01/2014
STEP 2: SET THE METERING SELECTOR SWITCH (SW6) TO
THE "MAN" POSITION.
STEP 3: IR COMPENSATION ADJUSTMENT:
(a.) IR COMPENSATION IS PROVIDED TO OVERCOME
THE MOTOR'S NATURAL TENDENCY TO SLOW DOWN
AS LOAD INCREASES. IF THE MOTOR SLOWS DOWN
EXCESSIVELY AS IT IS LOADED, THE POT MARKED
"IR COMP" SHOULD BE ADJUSTED CLOCKWISE.
(b.) IF THE IR COMP IS ADJUSTED TOO FAR CLOCKWISE,
THE MOTOR WILL BEGIN TO OSCILLATE IN SPEED OR
"HUNT". IF THIS PULSING OF SPEED OCCURS,
ADJUST THE IR COMP COUNTERCLOCKWISE UNTIL THE
MOTOR SPEED STABILIZES.
STEP 4: MINIMUM SPEED ADJUSTMENT:
(a.) ADJUST THE MANUAL SPEED CONTROL (RV1) FULLY
COUNTERCLOCKWISE.
(b.) ADJUST THE "MIN" SPEED POT ON DC DRIVE (SCR1)
WITH A SCREWDRIVER UNTIL YOU READ 8 VDC ON
THE DC VOLTMETER (M1).
STEP 5: MAXIMUM SPEED ADJUSTMENT:
(a.) ADJUST THE MANUAL SPEED CONTROL (RV1) FULLY
CLOCKWISE.
(b.) ADJUST THE "MAX" SPEED POT ON THE DC DRIVE
(SCR1) WITH A SCREWDRIVER UNTIL YOU READ 85
VDC ON THE DC VOLTMETER (M1). NOTE: DO NOT
EXCEED 90 VDC IN MANUAL OR AUTOMATIC MODE.
THIS WILL CAUSE DAMAGE TO THE DC MOTOR.
STEP 6: MAKE SURE YOUR TAKE AWAY SYSTEM CAN HANDLE
90 VDC OUTPUT OF GRAIN. IF NOT, YOU CAN
ADJUST THE "MAX" SPEED POT ON THE DC DRIVE
(SCR1) DOWN TO MEET YOUR SYSTEM
CAPACITY. (EX. 75 VDC).
STEP 7: RECHECK THE UNLOADING RATE BY STARTING AT
STEP 4 AND VERIFY THAT THE MINIMUM AND
MAXIMUM VOLTAGES HAVE BEEN PROPERLY SET.
STEP 8: PLACE COVER ON THE DC DRIVE (SCR1).
NOTE: FOR MORE INFORMATION ON THE DC DRIVE (SCR1),
REFER TO SECTION 14 "COMPONENT LITERATURE".
7B. SEQUENCE: METERING SELECTOR SWITCH (SW6) TO "AUTO", ENERGIZING
AUTOMATIC METERING SYSTEM CIRCUIT.
NOTE: BEFORE TROUBLE SHOOTING AUTOMATIC METERING SYSTEM, MANUAL METERING
SYSTEM MUST BE OPERATIONAL. IF NOT, REFER TO SEQUENCE "7A".
ACTION: METERING SELECTOR SWITCH (SW6) TO "AUTO" POSITION, STARTS
METERING ROLLS AND DISCHARGES AT VARIABLE RATE CONTROLLED
BY SETTING OF AUTOMATIC METERING CONTROL (TC2). THE