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Trips and Fault Finding
11-6
890CS Common Bus Supply - Frames B & D; 890CD Common Bus Drive and 890SD Standalone Drive - Frames E & F
6511
Keypad
Display
6901
Keypad
Display
Description
Possible Reason for Trip
IN 2
INPUT 2 BREAK
I/O TRIPS:: INPUT 2
BREAK has gone True
♦
Check configuration to determine source of signal
STLL
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
IT
INVERSE TIME
♦
The inverse time current limit is active: motor loading
is too great; fixed or autoboost levels are too high
(Full Load Current = 150% for 60 seconds)
DB R
BRAKE RESISTOR
External dynamic braking
resistor has been overloaded
♦
Trying to decelerate a large inertia load too quickly or
too often
DB S
BRAKE SWITCH
Internal dynamic braking
switch has been overloaded
♦
Trying to decelerate a large inertia load too quickly or
too often
DISP
OP STATION
Keypad has been
disconnected from drive
whilst drive is running in
local control
♦
Keypad accidentally disconnected from drive