Abnormality Diagnostic Function And Reset Method; Details And Remedies For Various Fault Trips - Panasonic AMK3000P22 Installation Manual

 ABNORMALITY DIAGNOSTIC
FUNCTION AND RESET METHOD

5.1 Details and Remedies for Various Fault Trips

The fault trip memory stores the causes of trip in monitor modes n20 to n23.
Even if the power is cut off, the fourth to the latest causes of trip will still be held. (Details
of factory inspection are stored in the memory before delivery.)
Details and causes of
Display
abnormality
SC1 · Instantaneous overcurrent
during acceleration
SC2 · Instantaneous overcurrent at
constant speed
SC3 · Instantaneous overcurrent
during deceleration
· Instantaneous overcurrent
SC4 during acceleration/
deceleration/constant speed
· Shorted output or overcurrent
SC5
during startup
· Failure detected during
SC6
startup
OC1 · Overcurrent during
acceleration
OC2 · Overcurrent at constant speed
OC3 · Overcurrent during
deceleration
OU1 · Internal DC overvoltage
during acceleration
OU2 · Internal DC overvoltage at
constant speed
· Internal DC overvoltage
OU3
during deceleration
· Power supply voltage below
LU
85% of its rating
· The output current exceeds
125% of electronic thermal
OL setting current or 140% of
rated current of inverter for
more than 1 minute.
OH · Heat sink overheated
· External fault stop input signal
AU is input from control circuit
terminals.
· Check for any shorted output or ground.
· Eliminate sharp fluctuation at load side.
· Extend acceleration/deceleration time
(parameters P001, P002 and P317 to P322).
· Stop ON/OFF operation of magnetic
contactor at load side.
· Check for any shorted output or ground.
· Check the internal switching module
(Welcome to consult with us.)
· Check output for open phase and eliminate
sharp fluctuations at load side.
· Extend acceleration/deceleration time
(parameters P001, P002 and P317 to P322).
· Adjust torque boost level (parameter P011).
· Check for restart operation during normal operation.
· Stop ON/OFF operation of magnetic
contactor at load side.
· Extend acceleration time (parameters P001, P317,
P319 and P321).
· Eliminate sharp fluctuations at load side.
· Extend deceleratin time (parameters P002,
P318, P320 and P322)
· Measure power supply voltage and check
input for open phase.
· Check ride-through restart function.
· Check electronic thermal setting current.
· Check and adjust torque boost level
(parameter P011).
· Reduce the load.
· Check ambient temperature.
· Check if the external signal is proper and if
timing circuit is correct.
Remedies
26