Bell & Gossett P2001489 Integrated Technologic with Sensorless Control - Manual (Page 41)

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 will have tripped. Alarms must be reset
to restart operation once their cause has been rectified. This may be done in four ways:
1. By using the [RESET] control button on the LCP.
2. Via a digital input with the “Reset” function.
3. Via serial communication/optional fieldbus.
4. By resetting automatically using [Auto Reset] function.
After a manual reset using the [RESET] control button on the LCP, the [AUTO ON] or
[HAND ON] button must be pressed to restart the motor.
Trip-locked alarm
If an alarm cannot be reset, the reason may be that its cause has not been rectified, or the
alarm is trip-locked (see also table on following page).
NOTICE:
Disconnect and lock out electrical power before installing or servicing the unit.
• Alarms that are trip-locked offer additional protection, means 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 may
be reset as described above once the casue 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 and alarm is marked against a code in the table on the following page, this
means that either a warning occurs before an alarm, or it can be specified whether it is a
warning or an alarm that is to 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 on the frequency converter. Once the problem has been
rectified, only the alarm continues flashing.
Table 15: Alarm/Warning code list
Number Description Warning Alarm/Trip Alarm / Trip Lock Parameter Reference
1 10 volts low X
2 Live zero error (X) (X) 6–01
3 No motor (X) 1–80
4 Mains phase loss (X) (X) (X) 14–12
5 DC link voltage high X
6 DC link voltage low X
7 DC over voltage X X
8 DC under voltage X X
9 Inverter overloaded X X
10 Motor ETR over
temperature
(X) (X) 1–90
11 Motor thermistor over
temperature
(X) (X) 1–90
12 Torque limit X X
13 Over current X X X
14 Earth fault X X X
15 Hardware mismatch X X
Troubleshooting
Integrated Technologic ® with Sensorless Control INSTRUCTION MANUAL 39