220
Faults – Causes – Remedies
Starter does not start, no fault displayed
• If the display does not light up, check the power supply to the drive.
• The assignment of the “Fast stop” or “Freewheel” functions will prevent the drive starting if the corresponding logic inputs are not
powered up. The ER40 then displays
[Freewheel]
(nSt)
in freewheel stop and
[Fast stop]
(FSt)
in fast stop. This is normal since
these functions are active at zero so that the drive will be stopped safely if there is a wire break.
• Make sure that the run command input or inputs are activated in accordance with the selected control mode (
[2/3 wire control]
(tCC)
and
[2 wire type]
(tCt) parameters,
page
77
).
• If the reference channel or command channel is assigned to a communication bus, when the power supply is connected, the drive
will display
[Freewheel]
(nSt)
and remain in stop mode until the communication bus sends a command.
Faults, which cannot be reset automatically
The cause of the fault must be removed before resetting by turning off and then back on.
AI2F, EnF, SOF, SPF, and tnF faults can also be reset remotely by means of a logic input or control bit (
[Fault reset]
(rSF)
parameter,
page
174
).
EnF, InFA, InFb, SOF, SPF, and tnF faults can be inhibited and cleared remotely by means of a logic input or control bit (
[Fault inhibit
assign.]
(InH)
parameter, page
185
).
Fault
Name
Probable cause
Remedy
AI2F
[AI2 input]
• Non-conforming signal on analog
input AI2
• Check the wiring of analog input AI2 and the value of the
signal
bOF
[DBR overload]
• The braking resistor is under excessive
stress
• Check the size of the resistor and wait for it to cool down
• Check the
[DB Resistor Power]
(brP)
and
[DB Resistor value]
(brU) parameters,
page
188
.
bUF
[DB unit sh. Circuit]
• Short-circuit output from braking unit
• Check the wiring of the braking unit and the resistor
• Check the braking resistor
CrF1
[Precharge]
• Load relay control fault or charging
resistor damaged
• Switch the drive off and then back on again
• Check the internal connections
• Inspect/repair the drive
CrF2
[Thyr. soft charge]
• DC bus charging fault (thyristors)
EEF1
[Control Eeprom]
• Internal memory fault, control card
• Check the environment (electromagnetic compatibility)
• Turn off, reset, return to factory settings
• Inspect/repair the drive
EEF2
[Power Eeprom]
• Internal memory fault, power card
FCF1
[Out. contact.
stuck]
• The output contactor remains closed
although the opening conditions have
been met
• Check the contactor and its wiring
• Check the feedback circuit
HdF
[IGBT
desaturation]
• Short-circuit or grounding at the drive
output
• Check the cables connecting the drive to the motor, and the
insulation of the motor
• Perform the diagnostic tests via the
[1.10 DIAGNOSTICS]
menu.
ILF
[internal com. link]
• Communication fault between option
card and drive
• Check the environment (electromagnetic compatibility)
• Check the connections
• Check that no more than 2 option cards (max. permitted)
have been installed on the drive
• Replace the option card
• Inspect/repair the drive
InF1
[Rating error]
• The power card is different from the
card stored
• Check the reference of the power card
InF2
[Incompatible PB]
• The power card is incompatible with the
control card
• Check the reference of the power card and its compatibility
InF3
[Internal serial link]
• Communication fault between the
internal cards
• Check the internal connections
• Inspect/repair the drive
Содержание ER40-G
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