
Chapter 5 - DIAGNOSTICS AND FAULT FINDING
584S Frequency Inverter
5-5
ALARMS
If the drive trips then the display immediately shows a message indicating the reason for the trip. Alarm conditions
are reset by removing and re-applying the RUN signal on terminal 20. The alarm message can be cleared from the
display by pressing the "E" key. However the message will be stored in the drive's non-volatile memory. It can be
retrieved by using the
LAST ALARM
menu.
The error message contained in the
LAST ALARM
menu can be cleared by simply pressing the down arrow key
while viewing this parameter. This operation also clears the alarm message from the drive's non volatile memory.
The possible alarm messages are:
LINK UNDERVOLTS
The DC link voltage is too low. Possible reasons for this alarm message are:
(a)
The mains voltage is too low;
(b)
The mains supply has been lost;
(c)
One of the three phases of the supply is missing.
LINK OVERVOLTAGE
The DC link voltage is too high. Possible reasons for this alarm message are:
(a)
The mains voltage is too high;
(b)
Trying to decelerate a large inertia load too quickly.
LINK OVERCURRENT
The DC link current is too high. Possible reasons for this alarm message are:
(a)
Trying to accelerate a large inertia load too quickly;
(b)
Trying to decelerate a large inertia load too quickly;
(c)
Application of shock load;
(d)
Short circuit between motor phases;
(e)
Short circuit between motor phase and earth;
(f)
Too long output cables or too many parallel motors;
(g)
Voltage boost set too high.
HEATSINK TEMP
The drive heatsink temperature is too high. Possible reasons for this alarm
message are:
(a)
The ambient air temperature is too high;
(b)
A drive cooling fan has failed.:
(c)
Poor ventilation.
MOTOR TEMP
The motor temperature is too high. Possible reasons for this alarm message
are:
(a)
Prolonged operation of the motor at low speed without forced
cooling;
(b)
Excessive load;
(c)
Motor voltage rating incorrect:
(d)
Voltage boost set too high.
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