7-2
Trips and Fault Finding
605C Frequency Inverter
Using the Operator Station to Manage Trips
Trip Messages
If the Inverter trips, then the display immediately shows a message indicating the reason for the
trip. The possible trip messages are given in the table below.
Trip Message and Meaning
Possible Reason for Trip
LINK OVERVOLTS
The Inverter internal dc link voltage is
too high
The supply voltage is too high
Trying to decelerate a large inertia load too quickly
The brake resistor is open circuit
LINK UNDERVOLT
The Inverter internal dc link voltage is
too low
The supply voltage is too low
The supply has been lost
A supply phase is missing
OVERCURRENT
The motor current being drawn from the
Inverter is too high
Trying to accelerate a large inertia load too quickly
Trying to decelerate a large inertia load too quickly
Application of shock load to motor
Short circuit between motor phases
Short circuit between motor phase and earth
Motor output cables too long or too many parallel
motors connected to the Inverter
Fixed or auto boost levels are set too high
HEATSINK TEMP
The Inverter heatsink temperature is too
high
The ambient air temperature is too high
Poor ventilation or spacing between Inverters
EXTERNAL TRIP
User trip caused via control terminals
+24V not present on external trip (e.g. terminal 16,
Macro 1).
INPUT 1 BREAK
A signal break has been detected on
analog input 1 (terminal 1)
Analog input is incorrectly configured for 4-20mA
operation
Break in external control wiring
INPUT 2 BREAK
A signal break has been detected on
analog input 2 (terminal 2)
Analog input is incorrectly configured for 4-20mA
operation
Break in external control wiring
MOTOR STALLED
The motor has stalled (not rotating)
Motor loading too great
Current limit level is set too low
Stall trip duration is set too low
Fixed or auto boost levels are set too high
I*t TRIP
The motor current drawn from the
Inverter has exceeded the user set I*t
levels
Motor loading is too great
I*t threshold level is set too low
I*t upper limit level is set too low
I*t time duration is set too low
BRAKE RESISTOR
External dynamic braking resistor has
been overloaded
Trying to decelerate a large inertia load too quickly or
too often
BRAKE SWITCH
Internal dynamic braking switch has
been overloaded
Trying to decelerate a large inertia load too quickly or
too often
Summary of Contents for 605C
Page 16: ...1 4 Getting Started 605C Frequency Inverter ...
Page 22: ...2 6 An Overview of the Inverter 605C Frequency Inverter ...
Page 50: ...4 14 Operating the Inverter 605C Frequency Inverter ...
Page 66: ...5 16 The Operator Station 605C Frequency Inverter ...
Page 156: ...8 2 Routine Maintenance and Repair 605C Frequency Inverter ...
Page 184: ...10 22 Parameter Specification 605C Frequency Inverter ...
Page 212: ...13 6 Application Notes 605C Frequency Inverter ...
Page 214: ...14 2 Serial Communications 605C Frequency Inverter ...
Page 236: ......