TROUBLESHOOTING
Display
Possible cause/Suggested solution
FLC too high
The EMX3 can support higher motor full load current values when connected to the motor using inside
delta configuration rather than in-line connection. If the soft starter is connected in-line but the
programmed setting for parameter 1A
Motor Full Load Current
is above the in-line maximum, the soft
starter will trip at start (see
Minimum and Maximum Current Settings
on page 82).
If the soft starter is connected to the motor using inside delta configuration, the soft starter may not be
correctly detecting the connection. Contact your local supplier for advice.
Related parameters: 1A, 9B
Frequency
The mains frequency has gone beyond the specified range.
Check for other equipment in the area that could be affecting the mains supply, particularly variable
speed drives and switch mode power supplies (SMPS).
If the EMX3 is connected to a generator set supply, the generator may be too small or could have a
speed regulation problem.
Related parameters: 4J, 4K, 4L, 16F
Ground Fault
Test the insulation of the output cables and the motor. Identify and resolve the cause of any ground
fault.
NOTE
Ground fault protection is only available if the RTD/PT100 and ground fault protection
card is fitted.
Related parameters: 4O, 4P, 16N
Heatsink
overtemperature
Check if cooling fans are operating. If mounted in an enclosure, check if ventilation is adequate.
Fans operate during Start, Run and for 10 minutes after the starter exits the Stop state.
NOTE
Models EMX3-0023B to EMX3-0053B and EMX3-0170B do not have a cooling fan.
Models with fans will operate the cooling fans from a Start until 10 minutes after a
Stop.
Related parameters: 16L
High Level
This is a name selected for a programmable input. Refer to Input A trip.
High Pressure
This is a name selected for a programmable input. Refer to Input A trip.
Input A trip
One of the soft starter's inputs is set to a trip function and has activated. Check the status of the
inputs to identify which input has activated, then resolve the trigger condition.
Related parameters: 6C, 6D, 6E, 6A, 6B, 16G
Instantaneous
overcurrent
There has been a sharp rise in motor current, probably caused by a locked rotor condition (shearpin)
while running. This may indicate a jammed load.
Related parameters: 4E, 4F, 16D
Internal fault X
The EMX3 has tripped on an internal fault. Contact your local supplier with the fault code (X).
Related parameters: None
L1 phase loss
L2 phase loss
L3 phase loss
During pre-start checks the starter has detected a phase loss as indicated.
In run state, the starter has detected that the current on the affected phase has dropped below 2% of
the programmed motor FLC for more than 1 second, indicating that either the incoming phase or
connection to the motor has been lost.
Check the supply and the input and output connections at the starter and at the motor end.
Related parameters: None
L1-T1 shorted
L2-T2 shorted
L3-T3 shorted
During pre-start checks the starter has detected a shorted SCR or a short within the bypass contactor
as indicated. If the starter is connected in-line with the motor, consider using PowerThrough to allow
operation until the starter can be repaired.
NOTE
PowerThrough is only available with in-line installations. If the starter is installed
inside delta, PowerThrough will not operate.
The starter will trip on Lx-Tx Shorted on the first start attempt after control power is
applied. PowerThrough will not operate if control power is cycled between starts.
Related parameters: 15D
72
| User Manual (710-04840-00M)
Содержание EMX3-0023B
Страница 1: ...EMX3 Soft Starter USER MANUAL ...