RUN
NO
YES
LAMP
(CONTROL BY
ON?
EXT. INPUTS)
NO
(CONTROL
STOP COMMAND
BY DIGITAL
OPERATOR)
TERMINALS 11 AND 2)
DIGITAL
OPERATOR
ASSEMBLY
IS FAULTY.
REPLACE.
[ MOMENTARY INPUT ]
TERMINALS 11 AND 1)
TROUBLESHOOTING CHART 6.1
MOTOR DOES NOT ROTATE
"CHARGE" LAMP
ON MAIN PC BOARD
RATED VOLTAGE
ACROSS TERMINALS
L1(R), L2(S), AND L3(T)?
NO
SHOWN ON
ALPHA-NUMERIC
DISPLAY U1-10,
INPUT STATUS
3-WIRE CONTROL
STILL ON?
YES
(OPEN CIRCUIT
BETWEEN
NO
RUN
COMMAND ON?
NO
(CLOSED CIRCUIT
BETWEEN
YES
APPROX. 15VDC FROM
TERMINAL 15(+) TO 17?
PROPER FREQUENCY
REFERENCE INPUT?
(TERMINAL 17(–) TO 13 ( U1-15 ),
14 ( U1-16 ), OR 16 ( U1-17 ) )
NO
LIT?
YES
NO
YES
FAULT
YES
DISPLAY?
FWD RUN/STOP
CLOSE
& REV RUN/STOP
BOTH OFF?
STOP
(OPEN CIRCUITS FROM
COMMAND
TERMINAL 11 TO
INPUT.
TERMINALS 1 AND 2)
FWD RUN/STOP
& REV RUN/STOP
INPUT RUN
COMMAND.
(CLOSED CIRCUITS FROM
TERMINAL 11 TO
TERMINALS 1 AND 2)
NO
YES
NO
YES
A
TO NEXT
PAGE
6-11
CHECK CIRCUIT
BREAKER, MAGNETIC
CONTACTOR AND
INPUT POWER.
GO TO APPROPRIATE
CHART, 6.5 THRU 6.13.
2-WIRE CONTROL
INPUT A
YES
RUN/STOP
COMMAND.
NO
RELEASE
ONE
YES
BOTH ON?
RUN/STOP
COMMAND
INPUT.
NO
DRIVE'S
CONTROL POWER
CIRCUIT IS FAULTY.
CHECK EXTERNAL
CIRCUITS FOR
PROBLEM AND
REPAIR.