Rockwell Automation FlexPak Plus NRG DC Drive User Manual
Page 43
42
1.
CURRENT LIMIT:
a)
FACTORY PRESET TO 150%. ADJUST AS DESIRED FOR MAX. CURRENT 150%. (CCW DECREASES CUR-
RENT).
b)
DOT #4 IS APPROXIMATELY 100%.
2.
MAX SPEED:
a)
SET MAX. SPEED AND MIN SPEED POTS CCW.
b)
SET SPEED (OR VOLTAGE) CONTROL POT TO MINIMUM.
c)
START DRIVE AND GRADUALLY INCREASE SPEED (OR VOLTAGE) CONTROL POT TO MAXIMUM. WAIT
UNTIL SPEED STABILIZES.
d)
INCREASE MAX. SPEED POT UNTIL DESIRED MAX. SPEED (SPEED REGULATOR) OR MAX. VOLTAGE
(VOLTAGE REGULATOR) IS ATTAINED. MOTOR MUST NOT EXCEED ITS SPEED OF VOLTAGE RATING.
e)
FOR REFERENCE DOT #1 CORRESPONDS TO MAX. SPEED APPROXIMATELY 70% RATED SPEED, AND
EACH SUCCEEDING DOT ADDS 5% UNTIL DOT #7 CORRESPONDS TO 100% RATED SPEED (VOLTAGE).
DOT #8 & #9 LOCATIONS INSURE 100% CAN BE OBTAINED IN ALL DRIVES.
3.
MIN. SPEED:
a)
SET SPEED (OR VOLTAGE) CONTROL POT TO “0”.
b)
START DRIVE AND INCREASE MIN. SPEED POT CW UNTIL DESIRED MIN. SPEED (SPEED REGULATOR)
OR MIN. VOLTS (VOLTAGE REGULATOR) IS ATTAINED. WAIT UNTIL SPEED STABILIZES.
c)
FOR REFERENCE, DOT #1 NORMALLY CORRESPONDS TO MIN. SPEED OF APPROXIMATELY 3% AND EACH
SUCCEEDING DOT ADDS 5% TILL DOT #9 CORRESPONDS TO APPROXIMATELY 40% RATED SPEED. SEE
I/M.
4.
IR COMP: ONLY USED ON VOLTAGE REGULATOR SYSTEMS.
ALL OTHER SYSTEMS MUST HAVE IR COMP
POT FULLY CCW (SET TO DOT #1).
a)
RUN DRIVE UNLOADED AT MAX. RATED SPEED.
b)
LOAD DRIVE TO FULL LOAD.
c)
ADJUST IR COMP CW UNTIL SPEED IS AT THE DESIRED LEVEL. (DO NOT EXCEED RATED SPEED).
d)
TYPICAL MOTORS WILL HAVE AN IR COMP SETTING OF ABOUT DOT #3.
5.
ACCEL:
a)
SET ACCEL. POT CCW (DOT 1).
b)
START DRIVE AND TURN ACCEL. POT CW TO INCREASE ACCEL. RATE. ADJUST TO DESIRED RATE.
TO SET FAST ACCEL. RATES ACCURATELY, A CHART RECORDER OR A STORAGE SCOPE MAY BE RE-
QUIRED TO MONITOR THE SPEED (ARMATURE VOLTS OR TACH).
c)
FOR REFERENCE, DOT #9 CORRESPONDS TO AN ACCEL. RAMP RATE OF ABOUT (0 TO 100% REF-
ERENCE)/0.3 SEC. AND EACH DOT ADDS ABOUT 5 SECONDS, SO DOT #1 CORRESPONDS TO RAMP
RATE OF ABOUT (0 TO 100% REFERENCE)/45 SEC.
6.
DECEL:
a)
SET DECEL. POT CCW (DOT 1).
b)
START DRIVE AND RUN AT MAXIMUM SPEED.
c)
QUICKLY SET THE REFERENCE TO ZERO AND TURN DECEL. POT CW TO INCREASE DECEL. RATE.
ADJUST TO DESIRED RATE. TO SET FAST DECEL. RATES ACCURATELY A CHART RECORDER OR A
STORAGE SCOPE MAY BE REQUIRED TO MONITOR THE SPEED (ARMATURE VOLTS OR TACH). THIS
ADJUSTMENT MAY REQUIRE THE MOTOR TO BE LOADED IF THE DESIRED DECEL. RATE IS FASTER
THAN THE COAST-TO-REST RATE OF THE UNLOADED MOTOR.
NOTE: THE DECEL. CIRCUITS ARE NOT USED DURING A STANDARD STOP SEQUENCE UTILIZING THE
STOP SWITCH.
d)
FOR REFERENCE, DOT #9 CORRESPONDS TO A DECEL. RAMP RATE OF ABOUT (100% TO 0 REF-
ERENCE)/0.3 SEC. AND EACH DOT ADDS ABOUT 5 SECONDS, SO THAT DOT #1 CORRESPONDS TO
RAMP RATE OF ABOUT (100% TO 0 REFERENCE)/45 SECONDS.
MAINTENANCE AND SERVICE SUGGESTIONS
THE OPTIONAL METER ADAPTOR KIT, STATUS INDICATOR AND/OR DIAGNOSTOR WILL ASSIST IN DETERMIN-
ING WHETHER MAIN PCB’S ARE FUNCTIONALLY OPERATIONAL. AN UNDERSTANDING OF THE WAVEFORMS IN-
VOLVED WILL ISOLATE TROUBLE AREAS. IT IS SUGGESTED THAT THE USER BECOME FAMILIAR WITH DRIVE
VOLTAGE LEVELS WHEN EQUIPMENT IS OPERATING NORMALLY. ALL VOLTAGE LEVELS ARE NOMINAL AND MAY
INDICATE
10% OF STATED VALUE DEPENDING ON METER ACCURACY AND ACTUAL VALUE OF AC SUPPLY
VOLTAGES. SEE I/M FOR DETAILS.
W/D 30070Ć1 (Sheet 13 of 13)
Figure 5.17D - Technical Notes