Xylem Aquavar, Instruction Manual

Page: 133 / 172

A warning remains active until its cause is no longer present. Under certain circumstances,
operation of the motor may still be continued. Warning messages may be critical, but are
not necessarily so.
In the event of an alarm, the frequency converter trips. Reset the alarm to resume
operation once the cause has been rectified.
Three ways to reset:
• Press [Reset].
• Via a digital input with the “Reset” function.
• Via serial communication/optional fieldbus.
NOTE: After a manual reset pressing [Reset], press [Auto On] to restart the motor.
If an alarm can't be reset, the reason may be that its cause has not been rectified, or the
alarm is trip-locked.
Alarms that are trip-locked offer additional protection, meaning that the mains supply
must be switched off before the alarm can be reset. After being switched back on, the
frequency converter is no longer blocked and can be reset as described above once the
cause has been rectified.
Alarms that are not trip-locked can also be reset using the automatic reset function in [14–
20] Reset Mode (Warning: Automatic wake-up is possible).
In some cases a warning will occur before an alarm is issued. This is possible, for instance,
in [1–90] Motor Thermal Protection. After an alarm or trip, the motor continues to coast,
and the alarm and warning flash. Once the problem has been rectified, only the alarm
continues flashing until the frequency converter is reset.
NOTE: No missing motor phase detection (numbers 30–32) and no stall detection is active
when [1–10] Motor Construction is set to [1] PM non salient SPM.
The following table defines whether a warning is issued before an alarm, and whether the
alarm trips the unit or trip locks the unit.
Table 32: Alarm/Warning code list
Number Description Warning Alarm/Trip Alarm/Trip Lock Parameter Reference
1 10 volts low X
2 Sensor Fault (X) (X) [6–01] Sensor Fault
Timeout Function
3 No motor (X) [1–80] Function at
Stop
4 Input Phase Loss (X) (X) (X) [14–12] Function at
Mains
ImbalanceFunction at
Sensor Fault
5 DC link voltage high X
6 DC link voltage low X
7 DC overvoltage X X
8 DC undervoltage X X
9 Inverter overloaded X X
10 Motor ETR over-
temperature
(X) (X) [1–90] Motor
Temperature
11 Motor thermistor over
temperature
(X) (X) [1–90] Motor
Temperature
12 Torque limit X X
13 Over current X X X
14 Ground/earth fault X X
15 Hardware mismatch X X
7 Warnings and alarms
Aquavar ® Intelligent Pump Controller - 150 HP to 600 HP INSTRUCTION MANUAL 131