Trips & Fault Finding 10-2AC30V series Variable Speed DriveUSING THE KEYPAD TO MANAGE TRIPSTrip MessagesIf the drive trips, then the display immediately shows a message indicating the reason for the trip. The possible trip messages are given in thetable below.ID Trip Name Possible Reason for Trip1 OVER VOLTAGEThe 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 shortThe brake resistor is open circuitTo help prevent this trip, enable the DC Link Volts Limit feature2 UNDER VOLTAGEDC link low trip:• Supply is too low/power down3 OVER CURRENTThe 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 high4 STACK FAULTStack 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 table5 STACK OVER CURRENTThe 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 willtrip. This is caused by shock loads7 MOTOR STALLThe motor has stalled (not rotating) Drive in current limit >200 seconds:• Motor loading too great• FIXED BOOST level set too high8 INVERSE TIMEA prolonged overload condition, exceeding the Inverse Time allowance, has caused the trip:• Remove the overload conditionwww.comoso.com
