Trips and Fault Finding
7-2
650G AC Drive
Using the Keypad to Manage Trips
Trip Messages
If the drive trips, then the display immediately shows a message indicating the reason for the
trip. The possible trip messages are given in the table below.
ID
Trip Name
Possible Reason for Trip
1 OVERVOLTAGE
The drive internal dc link voltage is too high:
The supply voltage is too high
Trying to decelerate a large inertia load too quickly;
DECEL TIME time too short
The brake resistor is open circuit
2 UNDERVOLTAGE
DC link low trip:
Supply is too low/power down
3 OVERCURRENT
The motor current being drawn from the drive is too high:
Trying to accelerate a large inertia load too quickly;
ACCEL TIME time too short
Trying to decelerate a large inertia load too quickly;
DECEL TIME time too short
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 drive
FIXED BOOST level set too high
4 HEATSINK
Drive heatsink temperature > 100ºC:
The ambient air temperature is too high
Poor ventilation or spacing between drives
5 EXTERNAL
TRIP
The external trip input is high:
Check configuration to identify the source of the signal
(non-standard configuration)
6 INVERSE
TIME
A prolonged overload condition, exceeding the Inverse Time
allowance, has caused the trip:
Remove the overload condition - refer to Chapter 5:
P
12
7 CURRENT
LOOP
A current of less than 1mA is present when 4-20mA setpoint
is selected:
Look for a wire break
8 MOTOR
STALLED
The motor has stalled (not rotating) Drive in current limit
>200 seconds:
Motor loading too great
FIXED BOOST level set too high
9 ANIN
FAULT
AIN2 overload on terminal 3:
Overcurrent applied in Current mode to terminal 3
10 BRAKE RESISTOR
External dynamic brake resistor has been overloaded:
Trying to decelerate a large inertia too quickly or too
often
11 BRAKE
SWITCH
Internal dynamic braking switch has been overloaded:
Trying to decelerate a large inertia too quickly or too
often
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