GE Fuji Electric MICRO-SAVER AF-300, Руководство для стартапов

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6-1
6. Troubleshooting
6.1 Before Proceeding with Troubleshooting
WARNING
If any of the protective functions have been activated, first eliminate the cause. Then, after checking that the all run
commands are set to OFF, reset the alarm. Note that if the alarm is reset while any run commands are set to ON, the
drive may supply power to the motor and cause it to start.
Injury may occur.
– Even though the drive has interrupted power to the motor, if voltage is applied to the main circuit power input
terminals L1/R, L2/S and L3/T (L1/L and L2/N for 1-phase voltage input), then voltage may also be present at
the drive output terminals U, V, and W.
– Some residual electric charge may remain in the intermediate dc circuit capacitor even after the power is turned
off. It may take some time until the intermediate dc circuit voltage reaches a safe level. Before touching any part
of the circuit, wait for at least five minutes after the power has been turned off, and verify that the dc voltage
between main circuit terminals P (+) and N (-) is less than 25 V using a multimeter.
Electric shock may occur.
Follow the procedure below to resolve any problems.
(1) If a connection has been performed incorrectly, refer to Chapter 2, Subsection 2.3.4 “Wiring for Main Circuit
Terminals and Ground Terminals.”
(2) Is an alarm code displayed on the LED monitor?
Quick reference table of alarm codes
Alarm
code
Name
Refer
to
Alarm
code
Name
Refer
to
OC1
Overcurrent protection p.6-10
OH4 PTC thermistor for motor protection p.6-15
OC2 dbH Overheat protection for braking resistor p.6-16
OC3 OL1 Electronic thermal overload relay p.6-17
OU1
Overvoltage protection p.6-11
OLU Overload protection p.6-17
OU2 Er1 Memory error p.6-18
OU3 Er2 Remote keypad communications error p.6-19
LU Undervolatge protection p.6-12 Er3 CPU error p.6-19
L Input phase loss protection p.6-13 Er6 Operation protection p.6-20
OPL Output phase loss protection p.6-13 Er8 RS485 communications error p.6-20
OH1 Overheat protection for heat sink p.6-14
ErF Data save error during undervoltage p.6-21
OH2 External alarm input p.6-15
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