Filter
Top Products
5–2 Troubleshooting MN735
Display
Trip Message and Meaning Possible Reason for Trip
Motor loading too great
FIXED BOOST level set too high
DC LINK RIPPLE
A dc link ripple alert
Supply imbalance in a 3–phase system
Poor supply regulation in a 1–phase system
CURRENT LIMIT
Software overcurrent trip
See OVERCURRENT above
TERMINAL 3 OVERLOAD AIN2 overload – overcurrent applied in Current
mode
TERMINAL 4 OVERLOAD +10V REF overload warning – 10mA maximum
TERMINAL 5 OVERLOAD AOUT overload – 10mA maximum
TERMINAL 9 OVERLOAD DIN3 overload – 20mA maximum
TERMINAL 10 OVERLOAD DOUT2 overload – 20mA maximum
Product Code Error Switch unit off/on. If persistent, return unit to
factory
Calibration Data Error Switch unit off/on. If persistent, return unit to
factory
Configuration Data Error
General Failures
Problem Possible Cause Remedy
Inverter will not power–up Fuse blown Check supply details, fit correct fuse.
Check Product Code against Model
No.
Faulty cabling Check all connections are
correct/secure.
Check cable continuity
Inverter fuse keeps blowing
Faulty cabling or
connections wrong
Check for problem and rectify before
replacing with correct fuse
Faulty Inverter Contact Eurotherm Drives
Cannot obtain power–on
state
Incorrect or no supply
available
Check supply details
Motor will not run at
switch–on
Motor jammed Stop the Inverter and clear the jam
Motor runs and stops Motor becomes jammed Stop the Inverter and clear the jam
Open circuit speed reference
potentiometer
Check terminal