TROUBLESHOOTING
120 EMX4i User Manual 710-14888-00C
Possible cause/Suggested solution
Time-overcurrent
The EMX4i 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
Start Time
are appropriate for the application.
Related parameters: 2Q, 3S, 5O
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