Amtech Axpert-Eazy Series - Appendix-B Fault Codes

Amtech
A.8
13
A
Appendix-B: Fault Codes
Sr.
No.
Fault Name
Fault Description
1
Over Current Fault
This fault indicates that
the unit has tripped due to excessive over current
(200% of the rated current). This is very fast acting. A short circuit condition
on the output will also cause the unit to display this fault. T
he drive will not
take second start before 1 minute. 3 start
s permitted in 10 minutes. After 3
starts, message will be displayed “Do not Reset, Contact AMTECH”
2
Drive
Over
Load
Fault
This fault Indicate that the output current exceeded the thermal operation time
having inverse time characteristics. When Normal-
duty is set, the standard
characteristics are 120% for one minute in respect to the motor rated current
value and 140% for 2.5 seconds. When Heavy-
duty is set, the standard is
150% for one minute in respect to the motor rated current value and
175% for
2.5 seconds. The over load counter starts after 100% load current for Normal
-duty and 105% load current for Heavy-duty.
3
Adjustable Over Current
Fault
This fault occurs when load current cross the adjustable over current level
programmed in B302 for 50 msec.
4
Under Current Fault
This fault occurs when the load current falls below the programmed under
current level (B304) for 1 second after reaching set speed.
5
U Phase
Current Sensor
Fail
It indicates that U phase current sensor has failed.
6
Over Voltage Fault
This fault occurs when the dc link voltage exceeds 785 VDC for 400
V series,
965 VDC for 500 V series and 1160 VDC for 600
V series level may be due to
increased mains voltage or regeneration. If this fault oc
curs. The fault is
instantaneous in order to protect the unit. Over voltage can be a serious
condition and can lead to failure of the semiconductor components. When an
over voltage fault occurs, the cause should be investigated and promptly
corrected. The
drive will not take second start before 1 minute. 3 starts
permitted in 10 minutes. After 3 starts, message will be displayed “Do no
t
Reset, Contact AMTECH”
7
Under Voltage Fault
This fault indicates that the unit has shut down due to the dc bus voltage
being low (below the under voltage level) after PLCT time (C509) for 3 msec
or PLCT activated 3 times in 1 minute.
8
Charging Fault
This fault occurs when dc bus voltage doesn’t reach at preset level within 5
seconds after power ON.
9
Output Phase Loss
This fault indicates that the one of the output phase has lost its current flow
(below 5%) and so the other two phases has over loaded (>70%) for
five
cycles
. This fault will not occur during speed search operation. It can be
disabled using C307. Note that
this fault will not occur if the output
terminals are open circuit.
10
Reference Missing
This fault occurs if the analog current input (4-20 mA) falls below 3 mA for 80
msec when it is selected as reference source.
11
External Fault
This fault occurs if
the external fault input selected at the terminal is missing.
This comes from the user.
12
Thermistor Over
Temperature Fault
This fault occurs if heat sink temperature
≥90 °C or <0°C for 2 second. In
cases of multiple Inverter Units, this fault is for the first Inverter Unit.
13
Auto Tuning Fault
This fault indicates that the unit has failed in the auto tuning process.
14
Emergency Stop
This fault indicates that the unit has shut down due to the emergency stop
command.
15
EEPROM Fault
This fault indi
cates that the data received from the EEPROM is incorrect.
After reset, it will store default values in the EEPROM memory.
16
Ground (
E
arth) Fault
This fault indicates that the unit has shut down due to ground fault. This fault