Trips & Fault Finding
10-2
AC30V series Variable Speed 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
OVER VOLTAGE
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
To help prevent this trip, enable the DC Link Volts Limit feature
2
UNDER VOLTAGE
DC link low trip:
Supply is too low/power down
3
OVER CURRENT
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
STACK FAULT
Stack self protection
Instantaneous overcurrent detected by the power stack. Refer to OVERCURRENT in this table.
Instantaneous over voltage event. Refer to OVER VOLTAGE in this table
5
STACK OVER CURRENT
The motor current exceeded the capabilities of the power stack.
Instantaneous overcurrent detected by the power stack. Refer to OVERCURRENT in this table.
6
CURRENT LIMIT
V/Hz mode only: If the current exceeds 200% of stack rated current for a period of 1 second, the drive will
trip. This is caused by shock loads
7
MOTOR STALL
The motor has stalled (not rotating) Drive in current limit >200 seconds:
Motor loading too great
FIXED BOOST level set too high
