30
warning 6, voltage warning low (dc link voltage low):
The intermediate circuit voltage (dc) is below the undervolt-
age limit of the control system, see table on the next page. The
inverter is still active.
alarm 7, overvoltage (dc over voltage):
If the intermediate circuit voltage (dc) exceeds the inverter
overvoltage limit (see table on the next page), the inverter
will trip. Furthermore, the voltage will be stated in the display.
alarm 8, Undervoltage (dc under voltage):
If the intermediate circuit voltage (dc) drops below the inverter
lower voltage limit (see table on this page), the inverter will trip
after 3 - 28 sec., depending on unit. Furthermore, the voltage
will be stated in the display. Check whether the supply voltage
matches inverter motor.
warning/alarm 9, Inverter overload (Inverter time):
The electronic, thermal inverter protection reports that the
inverter is about to cut out because of an overload (too high
current for too long). The counter for electronic, thermal inverter
protection gives a warning at 95% and trips at 100%, while giving
an alarm. The inverter cannot be reset until the counter is
below 90%.
trip/alarm/warning limits:
fc motor Series 3 × 380 - 480
Undervoltage 410[vdc]
Voltage warning low 440[vdc]
Voltage warning high 760[vdc]
Overvoltage 760[vdc]*
760v in 5 sec. or 800v immediately.
The voltages stated are the intermediate circuit voltage of
the inverter.
alarm 11, Motor thermistor (Motor thermistor):
If a thermistor is mounted and parameter 128 is set to Enable [1],
the fc motor will trip if the motor gets too hot..
warning 12, Current limit (Current limit):
The current is higher than the value in parameter 221
(in motor operation).
alarm 13, Over Current (Over Current):
The inverter peak current limit (approx. 230% of the rated
current) has been exceeded. The inverter will trip, while giving
an alarm. Turn o the inverter and check whether the motor
shaft can be turned.
alarm 14, Earth fault (Earth fault):
There is a discharge from the output phases to earth, either
between the inverter and the motor or in the motor itself.
alarm 15, Supply fault (Switch mode fault):
Fault in the switch mode power supply (internal 24 v supply).
Contact Armstrong.
alarm 16, Short-circuiting (Curr. short circuit):
There is short-circuiting on the motor terminals or the motor
itself. Contact Armstrong.
alarm 17, Standard bus timeout (std Bus timeout):
There is no communication to the inverter (when using serial
communications). The warning will only be active when
parameter 514 has been set to another value than o. If param-
eter 514 has been set to stop and trip, it will first give a warning
and then ramp down until it trips, while giving an alarm.
Parameter 513 Bus time interval could possibly be increased.
warning 33, Out of frequency range:
This warning is active if the output frequency has reached
parameter 201 Output frequency low limit or parameter 202
Output frequency high limit.
warning/alarm 34, hpfb error (hpfb alarm):
The profibus communication is not working correctly.
alarm 35, Inrush fault (Inrush fault):
This warning occurs when the unit has been switched on too
many times within one minute.
warning/alarm 36, Over temperature
(Over temperature):
A warning occurs at 78°c and the inverter trips at 90°c. The
unit can be reset when the temperature is below 70°c.
alarm: 37 Internal error (Internal error):
An error has occurred in the system. Contact Armstrong.
9.1 internal led descriptions
The led’s (shown in figure 4, page 15) can be used to determine the
status of the Design Envelope pump when an lcp is not available.
safety, risk of death
To view the led’s the cover will need to be removed
with the power supply switched on. This is very dan-
gerous and all necessary precautions should be taken
to eliminate the risk of electrocution.
led 300-304
led 300 (red): Fault trip
led 301 (yellow): Warning
led 302 (green): Power on
led 303-304: Communication (lcp or rs485)
note:
If led301 flashes slowly then the pump has been given a stop
command via an lcp (keypad) and can only be started by an lcp
start command.
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