Check First When You Have A Trouble - Mitsubishi Electric FR-HC2-7.5K Instruction Manual

Check first when you have a trouble

4.7

Check first when you have a trouble

Trouble
Converter does not operate properly.
POWER lamp is unlit.
Charge lamp is unlit.
Reactor heats up abnormally.
Unable to run the inverter.
Abnormal acoustic noise is generated from the
reactor.
Breaker trips.
136
Check the connection.
 Check if the wiring is performed correctly.
 Check if appropriate power supply voltage is applied.
 Check if the phase sequence is correct.
If the phase sequence is correct, check for the short circuit across
terminals SOF and SD and across terminals RES and SD.
Check the connection.
 Check if the connection is performed correctly.
 Check if the main circuit terminals R/L1, S/L2 and T/L3 are wired correctly.
 Check for any damage to the inrush current limit resistor
Check the connection.
 Check if the connection is performed correctly.
 Check if the main circuit terminals R4/L14, S4/L24 and T4/L34 are wired
correctly.
Check the connection.
 Check if the order of the reactor 1 and the reactor 2 is correct.
Check the setting.
 Check if the parameter setting of the inverter is correct. (Parameter setting
method differs by the inviter series. For the parameter setting method, refer to
page 55.)
Check if the phase sequence is correct.
Check the connection.
 Check if the wiring is performed correctly.
 Check if appropriate power supply voltage is applied.
 Check if the phase sequence is correct.
Check the above points, identify the cause of the trip and remove it before turning ON
the breaker power .
Checkpoint