Veikong gpd 515/g5 Startup Manual page 214

CHECK CON-
NECTIONS FOR
PROBLEM AND
REPAIR.
PROPER
CONNECTIONS
FROM DRIVE
TO PG
(ENCODER)?
YES
NO
TROUBLESHOOTING CHART 6.1 (Continued)
VOLTAGE PRESENT ACROSS
OUTPUT TERMINALS
T1(U), T2(V) AND T3(W)?
PROPER CONNECTIONS
NO
CONTROL METHOD?
V/F w/ PG Flux Vector
PROPER
CONNECTIONS
FROM DRIVE
TO PG
(ENCODER)?
NO YES
VOLTAGE PRESENT AT
MOTOR TERMINALS
T1(U), T2(V) AND T3(W)?
VOLTAGE BALANCED
BETWEEN PHASES, AT
T1(U), T2(V) AND T3(W)?
FROM
A
PRECEDING
PAGE
YES
FROM DRIVE TO
MOTOR?
YES
V/F Open Loop Vector
TORQUE LIMIT
SETTING
CORRECT?
YES
YES
YES
LOAD TORQUE
TOO LARGE?
NO
(WITHIN 2%)
YES
MOTOR
IS FAULTY.
6-12
NO
DRIVE
IS FAULTY.
SET TORQUE LIMIT
(ANALOG INPUT, OR
NO
L7-01 & L7-02 ) TO
PROPER VALUE.
CHECK FOR
PROBLEM IN MOTOR,
NO
MECHANICAL
SYSTEM OR BRAKE.
- REDUCE LOAD
TORQUE (DISCON-
NECT LOAD).
- REPLACE DRIVE
WITH ONE OF
LARGER CAPACITY.
NO
DRIVE
IS FAULTY.