Xylem IM255 AQUAVAR Intelligent Pump Controller - Manual (Page 103)

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).
If a warning or alarm is marked against a code in the following table, this means that either
a warning occurs before an alarm, or else that it is possible to specify whether a warning
or alarm should be displayed for a given fault.
This is possible, for instance, in [1–90] Motor Thermal Protection. After an alarm or trip, the
motor carries on coasting, 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.
Table 27: 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
FaultTimeout Function
3 No motor (X) [1–80] Function at
Stop
4 Input Phase Loss (X) (X) (X) [14–12] Function 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 Thermal
Protection
11 Motor thermistor over
temperature
(X) (X) [1–90] Motor Thermal
Protection
12 Torque limit X X
13 Over current X X X
14 Ground/earth fault X X
15 Hardware mismatch X X
16 Short circuit X X
Warnings and alarms
Aquavar ® Intelligent Pump Controller INSTRUCTION MANUAL 101