VLT
®
Series 3500
102
FREQUENCY0000000
VOLTAGE0LOW00000
60.0 Hz
VOLTAGE LIMITS
Drive input voltage 200 through 230 V 380 through 415 V 440 through 500 V all Type 3575-3800
DC Bus AC Input DC Bus AC Input DC Bus AC Input DC Bus AC Input
Undervoltage fault trip 210 150 400 285 460 325 470 330
Voltage warning, low 235 170 440 310 510 360 480 340
Voltage warning, high 370 260 665 470 800 565 790 560
Overvoltage fault trip 410 290 730 515 880 620 850 600
Warning Messages
Warning messages also appear in the third line of the dis-
play.
Warning messages
List of Common Warning Messages
The following warnings may be seen. They are listed below
with an explanation of the cause of the problem.
Low Voltage Warning (VOLTAGE LOW):
The DC bus voltage is below the warning limit. The inverter
is still operating.
High Voltage Warning (VOLTAGE HIGH):
The DC bus voltage is above the warning limit. The inverter
is still operating.
Undervoltage (UNDER VOLTAGE):
The DC bus voltage is below the undervoltage limit of the
inverter. The inverter has stopped and a fault trip will follow
after the time delay selected in parameter 311. See the
table below.
Overvoltage (OVER VOLTAGE):
The DC bus voltage is above the overvoltage limit of the in-
verter. The inverter has stopped and a trip will follow when
the delay selected in parameter 311 has passed. See the
table below.
Current Limit (CURRENT LIMIT):
The motor current is higher than the value entered in pa-
rameter 209, Current Limit. A fault trip will follow after the
time delay selected in parameter 310.
Overcurrent (OVER CURRENT):
The peak current limit of the inverter (approximately 250%
of the rated current) has been exceeded. After 7 to 11 sec-
onds a fault trip will follow.
Reference Fault (REF FAULT):
An analog input signal with a “live zero” has been chosen
such as 4 to 20 mA, 1 to 5 V or 2 to 10 V, for terminal 53 or
60. The warning is activated when the signal level is below
half the minimum level.
No Motor (NO MOTOR):
The motor check function in parameter 313 detects that no
motor has been connected to the drive’s output.
Low Frequency Warning (LO FREQ WARN):
The output frequency is lower than the value selected in pa-
rameter 210.
High Frequency Warning (HI FREQ WARN):
The output frequency is higher than the value selected in
parameter 211.
Low Current Warning (LO CURR WARN):
The output current is lower than the value selected in pa-
rameter 212.
High Current Warning (HI CURR WARN):
The output current is higher than the value selected in pa-
rameter 213.
Motor Overloaded (MOTOR TIME):
According to the motor electronic thermal relay protection
(ETR), the motor is too hot. Parameter 315 must be set to
give a warning.
Inverter Overloaded (INVERT TIME):
According to the drive’s electronic thermal protection, the
drive is close to tripping because of overload (too high a
current for too long a time). The counter for drive electronic
thermal protection has reached 98%, 100% results in a trip.
24 V Fault (NO 24 VOLT):
The 24 V DC supply to the control card is not present.
EEPROM Fault (EEPROM ERROR):
EEPROM fault. Data changes are not saved when AC
power is removed.
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