Trouble shooting
Chapter 11
180
1SFC132003M0201
11:3 General problems and faults
Status
Possible cause
Solution
Motor humming / starts without
given start signal.
Shorted thyristor.
By-pass contactor stuck in
closed position.
• Check and replace.
• Check and correct the reason.
Bad motor sound during start
and operation.
Inside Delta connection wrong.
• Check and correct the wiring.
Bad motor sound during stop.
Wrong ramp time for stop.
• Try different ramp times (some adjust-
ments can be necessary for best
result).
Motor does not start when giving
start command using the hard-
ware inputs.
Control wiring not correct
Start and stop command given
at the same time.
Keypad is in Local Control menu.
• Check connections for start and stop.
• Check that start and stop command is
not given at the same time.
• Check that the keypad is not in Local
Control menu.
• Check that parameter Fieldbus Ctrl is
set to No.
Motor does not start when giving
start command using the fieldbus
communication.
Setting of fieldbus parameter
wrong.
• Check that parameter Fieldbus Ctrl is
set to Yes.
• Check that bit "Enable" is used.
• Check that programmable inputs have
correct settings.
Displayed current in LCD does
not correspond to motor current.
Inside Delta connection.
• If the softstarter is connected Inside
Delta, the current displayed is 58%
(
) of the motor current.
Displayed current in LCD is not
stable.
The motor is too small.
The load on the motor is too
small.
(current is out of measuring
range).
• Check that the softstarter corresponds
to the motor size.
• Increase the load if possible.
• Check that softstarter and motor sizes
correspond.
Loading of parameters does
not work properly.
Fieldbus settings.
• See chapter Fieldbus for actual field-
bus type.
1
3
(
)
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Содержание PST105
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Страница 8: ...Chapter 8 1SFC132003M0201 Notes ...
Страница 10: ...Introduction 10 1SFC132003M0201 ...
Страница 14: ...Introduction Chapter 1 14 1SFC132003M0201 ...
Страница 15: ...15 1SFC132003M0201 Chapter 2 Quickstart Connection 17 Configuration 18 Start of the motor 18 Quickstart ...
Страница 16: ...Quickstart 16 1SFC132003M0201 ...
Страница 20: ...Description 20 1SFC132003M0201 ...
Страница 34: ...Description Chapter 3 34 1SFC132003M0201 ...
Страница 36: ...Mounting 36 1SFC132003M0201 ...
Страница 40: ...Mounting Chapter 4 40 1SFC132003M0201 ...
Страница 42: ...Connection 42 1SFC132003M0201 ...
Страница 60: ...Connection Chapter 5 60 1SFC132003M0201 ...
Страница 62: ...Human Machine Interface HMI 62 1SFC132003M0201 ...
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Страница 76: ...Setting and configuration 76 1SFC132003M0201 ...
Страница 120: ...Fieldbus communication option 120 1SFC132003M0201 ...
Страница 123: ...123 1SFC132003M0201 Chapter 9 Maintenance Regular maintenance 125 Service and repair 125 Maintenance ...
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Страница 130: ...Chapter 130 1SFC132003M0201 ...
Страница 178: ...Trouble shooting 178 1SFC132003M0201 ...
Страница 188: ...Trouble shooting Chapter 11 188 1SFC132003M0201 ...
Страница 189: ...189 1SFC132003M0201 Chapter 12 Diagrams Circuit diagram PST30 PST300 191 Circuit diagram PSTB370 PSTB1050 192 Diagrams ...
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