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Display
Possible cause/Suggested solution
Rating Capacity
The ASA 4.0 Advanced is operating beyond its safe capacity. Allow the starter to cool.
Related parameters: None
RTD Circuit
The smart card has detected a fault with the RTD sensor, or the RTD has activated temperature
protection.
Related parameters: 35B, 36J
SCR Itsm
The SCR current surge rating has been exceeded.
Related parameters: None
SCR
overtemperature
The temperature of the SCRs, calculated by the thermal model, is too high to allow further operation.
Wait for the starter to cool.
Related parameters: None
Starter
communication
There is a problem with the connection between the soft starter and the optional expansion card.
Remove and reinstall the card. If the problem persists, contact your local distributor.
Related parameters: None
Starts per hour
The soft starter has already attempted the maximum number of starts in the last 60 minutes. Wait before
attempting another start.
To determine when the waiting period will end, review the log.
Related parameters: 5Q
Thermistor circuit
The thermistor input has been enabled and:
•
The resistance at the input has fallen below 20
Ω
(the cold resistance of most thermistors will be
over this value) or
•
A short circuit has occurred. Check and resolve this condition.
Related parameters: None
Time-overcurrent
The ASA 4.0 Advanced is internally bypassed and has drawn high current during running. (The 10A
protection curve trip has been reached or the motor current has risen to 600% of the motor FLC setting.)
Related parameters: None
Undercurrent
The motor has experienced a sharp drop in current, caused by loss of load. Causes can include broken
components (shafts, belts or couplings), or a pump running dry.
Related parameters: 5C, 5D, 6D
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 parameters: 5K, 5L, 6H
Undervoltage
Mains voltage has fallen below the level selected. Causes can include an undersized supply or adding
a large load to the system.
Related parameters: 5G, 5H, 6F
Unsupported option
The selected function is not available (eg jog is not supported in inside delta configuration).
Related parameters: None
VZC Fail Px
Where 'X' is 1, 2 or 3.
Internal fault (PCB fault). Contact your local supplier for advice.
Related parameters: None
Zero Speed Detect
The zero speed input has not closed within the expected duration of a soft stop.
•
Check the zero speed sensor is operating correctly.
•
Check that parameters 2Q
Brake Current Limit
and 5O
Excess Start Time
are appropriate for the
application.
Related parameters: 2Q, 3S, 5O
11.3
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"
•
The reset input may be active. If the reset input is active, the starter will not operate.
"Simul" on display
•
The starter is running simulation software. This software is intended for demonstration
purposes only and is not suitable for controlling a motor. Contact your local supplier for
advice.
The soft starter does not respond to the
START
or
RESET
button on the
keypad.
•
The soft starter will only accept commands from the keypad if parameter 1A
Command
Source
is set to Remote Keypad. Check that the Local LED on the starter is on.
The soft starter does not respond to
commands from the control inputs.
•
The soft starter will only accept commands from the inputs if parameter 1A
Command
Source
is set to Digital Input. Check the setting of 1A.
•
The control wiring may be incorrect. Check that the remote start, stop and reset inputs
are configured correctly (refer to
Start/Stop
on page 18 for details).
•
The signals to the remote inputs may be incorrect. Test the signalling by activating
each input signal in turn.
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