Nidec D3-0023-B, Руководство пользователя

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Digistart D3: User Guide
95
Issue: G
Display Possible cause/Suggested solution
Underpower
The motor has experienced a sharp drop in power, caused by loss of load. Causes can include
broken components (shafts, belts or couplings), or a pump running dry.
Related Pr: 5E, 6B, 16D
Unsupported option
(function not available in
inside delta)
This trip is not adjustable.
The selected function is not available (eg jog is not supported in inside delta configuration).
Related Pr: None
Vibration
This is a name selected for a programmable input. See Input A trip.
VZC Fail Px
Where 'X' is 1, 2 or 3.
Internal fault (PCB fault). Contact your local supplier for advice.
This trip is not adjustable.
Related Pr: None
9.3 General Faults
This table describes situations where the soft starter does not operate as expected but does not trip or give a
warning.
Symptom Probable Cause
Starter "Not Ready"
•
Check Input A (DI4, +24V). The starter may be disabled via a
programmable input. If Pr 3A or 3F is set to Starter Disable and there is
an open circuit on the corresponding input, the Digistart D3 will not start.
The soft starter does not respond to
the START or RESET button on the
keypad.
•
The soft starter may be in Remote control mode. When the soft starter is
in Remote control mode, the Local LED on the starter is off. Press the
LCL/RMT button once to change to Local control.
The soft starter does not respond to
commands from the control inputs.
•
The soft starter may be in Local control mode. When the soft starter is in
Local control mode, the Local LED on the starter is on. Press the
LCL/RMT button once to change to Remote control.
•
The control wiring may be incorrect. Check that the remote start, stop
and reset inputs are configured correctly (see
Start/Stop control logic
on
page 24 for details).
•
The signals to the remote inputs may be incorrect. Test the signalling by
activating each input signal in turn. The appropriate remote control input
LED should activate on the starter.
The soft starter does not respond to a
start command from either the local or
remote controls.
•
The soft starter may be waiting for the restart delay to elapse. The length
of the restart delay is controlled by Pr 6G Restart Delay .
•
The motor may be too hot to permit a start. If Pr 5L Motor Temperature
Check is set to Check, the soft starter will only permit a start when it
calculates that the motor has sufficient thermal capacity to complete the
start successfully. Wait for the motor to cool before attempting another
start.
•
The starter may be disabled via a programmable input. If Pr 3A or 3F is
set to Starter Disable and there is an open circuit on the corresponding
input, the Digistart D3 will not start. If there is no further need to disable
the starter, close the circuit on the input.
NOTE
Pr 3M
Local/Remote
controls when the LCL/RMT button is
enabled.
A reset does not occur after an
Auto-Reset, when using a remote
two-wire control.
•
The remote 2-wire start signal must be removed and reapplied for a
re-start.
Non-resettable Thermistor Cct trip,
when there is a link between the
thermistor input TH1, TH2 or when
the motor thermistor connected
between TH1, TH2 is permanently
removed.
•
The thermistor input is enabled once a link is fitted and short circuit
protection has activated.
- Remove the link then load the default parameter set. This will
disable the thermistor input and clear the trip.
- Place a 1k2 Ω resistor across the thermistor input.
- Turn thermistor protection to 'Log only' (Pr 16K).