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7.0.0 FAULT FINDING
7.1.0 System default
If the red SYS led is lit, the logic board is defective.
• Check that the EPROM firmware memory is correctly plugged into the amplifier.
• Check for the possible presence of any conducting dust that may result in short-circuits on the logic board.
7.2.0 Stored defaults
In order to simplify the diagnostic and the maintenance, the defaults are displayed and processed with the priority
described below. For safety reasons, the power must be turned off to reset some defaults that require the handling
of the amplifier; in this case, the reset is automatic when power is turned on again. If power is not turned off, do
not forget to make a RESET immediately after the fault reset (pin 13 of X4 or Reset command in the BPCW
software).
7.2.1 “Busy” default
• If the BUSY default is continuously displayed after applying power to the amplifier, the selftesting
procedure has failed and the board is not ready for operation.
• If the BUSY default is continuously displayed after the execution of the AUTOPHASING function,
the procedure has failed because of an external cause or the calculated parameters are wrong. Check
that the ENABLE input is open. Then check that the motor is uncoupled and the shaft movement is
free during the procedure.
• If the BUSY default is continuously displayed after the execution of the AUTOTUNING function,
the procedure has failed because of an external cause or the calculated parameters are wrong. Check
that the ENABLE input is open. Then check that the motor is uncoupled and the shaft movement is
free during the procedure.
• If the BUSY default is continuously displayed after the execution of the Offset compensation
function, the offset voltage is exceeds 1 Volt. Check the voltage on the speed input command during
the procedure.
• If the BUSY default is continuously displayed after the execution of the Programmation function in
the ENCODER RESOLUTION module, the amplifier encoder output memory is out of operation.
7.2.2 “EEPROM” Default
• Check the presence of the EEPROM and check its correct orientation.
• If the default remains, the EEPROM is not correctly initialized or is not compatible with the amplifier
software.
7.2.3 Motor overtemperature
If the default appears when starting the amplifier:
• Check the configuration of the MN and OP jumpers with regard to the motor type.
• Check the connection between the thermal switch and the amplifier on the front panel X1 connector
or the X6 connector on the back of the rack.
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