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52
CHAPTER 8 – Troubleshooting
SMT-BD2/m
CHAPTER 8 - TROUBLESHOOTING
1 - SYSTEM FAULT
If the red
SYS
led is lit when the amplifier is on, the logic board is off duty.
Check that the EPROM firmware memory is correctly plugged on the amplifier.
Check for the possible presence of any conducting dust that may involve short-circuits on the amplifier logic
board.
2 - STORED FAULTS
If a fault occurs on the amplifier, it can generate the detection of several other faults which are only a
consequence of the initial one. In order to simplify diagnostic and maintenance, the faults are displayed and
processed with the priority described below. For safety reasons, the power must be turned off before cancelling
some faults that require the handling of the amplifier or the connectors.
2.1
-
"BUSY"
FAULT
If the BUSY fault is continuously displayed after power on, the auto-test procedure has failed and the control
board is not operating correctly.
If the BUSY fault is continuously displayed after starting the motor phasing procedure by the
RUN
input at
power up (incremental encoder configuration without HES) , the procedure has failed because of an external
cause and the calculated phase value is wrong. Check that the
Motor encoder resolution
parameter value is
correct. Check that the
Motor parameters
(
Pole pairs
and
Phase order
) values are correct. Check that the
ENABLE
input is activated. Check that the limit switches inputs are not activated. Check that the motor is not
locked and the shaft movement is free during the procedure execution.
If the BUSY fault is continuously displayed after the execution of the
Auto-phasing
procedure, the procedure
has failed because of an external cause and the calculated parameters are wrong. Check that the
Motor
encoder resolution
parameter value is correct. Check that the
ENABLE
input is activated. Check that the
limit switches inputs are not activated . Check that the motor is unloaded and the shaft movement is free
during the procedure execution.
If the BUSY fault is continuously displayed after the execution of the
Auto-tuning
procedure, the procedure
has failed because of an external cause and the calculated parameters are wrong. Check that the
ENABLE
input is activated. Check that the limit switches inputs are not activated. Check that the motor shaft movement
is free during the procedure execution.
If the BUSY fault is continuously displayed after the execution of the
Offset compensation
procedure, the
offset is exc/- 0.3 Volts. Check for the voltage value on the analog speed limitation input during the
procedure execution. Check that the analog inputs wiring answers the requirements of
If the BUSY fault is continuously displayed after the execution of a
HOME
sequence, the homing procedure
has failed because of an external cause. Check that the homing sequence
Time out
parameter value is
compatible with the application. Check that the encoder marker pulse is enabled by the
ZM
jumper if a homing
sequence with the
Zero
detection is programmed.
2.2
-
"EEPROM"
FAULT
Check for the presence of the EEPROM and check its correct orientation and mounting.
If the fault remains, the EEPROM is not correctly initialized (CHECKSUM error) or is not compatible with the
amplifier software version. In this case, renew the parameters setting and the sequence transfer from the PC
to the amplifier, then execute the
Save parameters to EEPROM
procedure.