Fault Diagnosis And Solutions - Powtran PI7800 User Manual

b13: motor parameter measurement
The parameter is set to achieve motor's dynamic measurement of parameters.
Please disconnect the motor and load(run without load).
When b13=1, inverter start to measure parameters automatically.
When keyboard displays "CAL1": stator resistor measure, motor stops.
When keyboard displays "CAL2":rotor resistor, leakage inductance measure,
motor stops.
When keyboard displays "CAL3": mutual inductance measure, motor runs in
high speed, pay attention.
The measurement could be stopped by pressing "STOP" key.
Please prepare to run the motor well before setting, the motor will run in a high
speed during the measurement .The measurement will end with "CAL3"
diapapears.
b1 resets to 0 after measurement. The measured parameters will be stored
automatically to b05~b09.
b14: Rotate speed display plus
Adjust the display of motor's actual running speed, refer to F00 monitor select: 6
Actual motor speed.
b15: Percentage linkage modulus
The only number which differentiate other inverters.
The set range 1~127 is the address of slave inverters that could receive
command and send the state of such slave inverters.
F73=128, the inverter is set to be one host inverter in the percentage linkage.
There is only one host inverter in one percent application.
Set frequency of slave inverter=percentage linkage modulus X frequency of host
inverter
The running state of slave inverter is controlled by host inverter.
b16: Reserved
b17: Reserved
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S VI. F P D
ECTION UNCTION ARAMETER ESCRIPTION
factory setting: 0
factory setting: 100.0%
factory setting: 1.00
factory setting: 0
factory setting: 0
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Section VII.

Fault Diagnosis and Solutions

Problems Possible causes
Control mode setting
Check F05.
Keyboard
is wrong
can not
Frequency setting is
control
Check F04.
wrong
Control mode setting
Potentiom
Check F05.
is wrong
eter can't
regulate
Frequency setting is
Check F04.
speed
wrong
LED monitor indicates
error message
No voltage exists
Check the voltage at R，S or T and
between terminals P
charging circuit.
and N.
The
Check the control mode and frequency
motor U, V or W terminals
parameter. Check the terminal
does produce no output or
condition if it is operated by an external
not abnormal output.
terminal.
rotate
Re-start after
powering down or Remember the set operating state.
free run
Too much load on the
Check and lower the load.
motor
System is disturbed or instant over
fault display OC-P
current
OC signal from current self-inspected
fault display OC-C
citcuit impact
fault display OC-FA OC signal from drive circuit
Output over current and current exceed
fault display OC-2 1.5~3 times of motor's rated current
(G/S: 2; F: 1.5; Z/M/T: 2.5;H:3).
Over Over current during Reset or modify the parameters of the
current acceleration functions F09, F18, F19.
OC
Over current during Reset or modify the parameters of the
deceleration functions F10, F20, F21.
Over current during
Check the load change and eliminate it.
operation
Over current during
Check if there is slight short circuit or
starting or operation
grounding.
from time to time
Check the earthing wire, screened
Disturbance
cable grounding and terminals.
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Solutions