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IMTP(D) 2.2 – ITTP(D) 2.2/4.0/5.5/7.5 - ELECTROIL
ENG
4 Motor overheating
Motor thermal protection related to nominal current set, for motor
insulations saving at high temperatures. Automatic re-start; final
stop after 10 consecutive occurrences
5 Dry working Null input flow or air presence;
Automatic re-start; final stop after 5 consecutive occurrences
6 Pressure sensor problem Pressure sensor output problem
Automatic re-start; final stop after 10 consecutive occurrences
7 Minimum flow The pump stop for minimum flow limit achievement. It’s a normal
working condition of the system (no demand
of water on the delivery) even thug is on the alarm list,
Automatic re-start; no limits
8 Enable OFF Opened contact EN: stop the motor; the motor restart when the
contact will close again
9 Input Voltage under limit Input voltage under the minimum working limit.
Automatic re-start; final stop after 10 consecutive occurrences
10 Delivery/Suction Pressure
Transducers inverted
Inversion delivery/suction on the pressure reading, caused by an
uncorrected wiring (only for Differential pressure control mode).
Table 12: Alarm list for IMTP(D)-ITTP(D) 2.2 M
6.4.2 Alarm list for Inverter models ITTP(D) 4.0 – 5.5 – 7.5:
Number
Alarm Type Description
1 Current Peak Immediately stop probably caused by short-circuit
Automatic re-start; final stop after 10 consecutive occurrences
2 Over-Voltage Normally caused by over voltage pick supply. Automatic re-start;
final stop after 10 consecutive occurrences
3 Inverter Temperature Over temperature IGBT protection (90°C)
Automatic re-start; final stop after 10 consecutive occurrences
4 I
2
T exceeded Motor thermal protection related to nominal current set, for motor
insulations saving at high temperatures. Automatic re-start; final
stop after 10 consecutive occurrences
5 Dry working No flow on the suction or air presence;
Automatic re-start; final stop after 5 consecutive occurrences
6 Pressure transducer problem Pressure sensor output problem
Automatic re-start; final stop after 10 consecutive occurrences
7 Minimum flow The pump stop for minimum flow limit achievement. It’s a normal
working condition of the system (no demand
of water on the delivery) even thug is on the alarm list,
Automatic re-start; no limits
8 Enable OFF Opened contact EN: stop the motor; the motor restart when the
contact will close again
9 Over-temperature
microprocessor
The microprocessor temperature exceed a limit value, then the
system must stop until the temperature return low.
Automatic re-start; final stop after 10 consecutive occurrences
10 Over-current High current combined with a low limited velocity. Automatic re-
start; final stop after 10 consecutive occurrences
11 Braking current peak Current peak on the braking resistors; Automatic re-start; final
stop after 10 consecutive occurrences
12 Error current reading Mistake on the current reading; the motor stop to prevent
possible damage caused by the faulty current control.
Automatic re-start; final stop after 10 consecutive occurrences
13 Input Voltage under limit Input voltage under the minimum working limit.
Automatic re-start; final stop after 10 consecutive occurrences
14 Unbalanced current Unbalanced currents on the three phases (>15% on RMS value)
Automatic re-start; final stop after 10 consecutive occurrences
15 INPUT-OUTPUT cables inverted Connection error: Voltage supply connected on the output and
Motor cable connected on the entrance: reverse in order to
enable the motor
16 Delivery/Suction Pressure
Transducers inverted
Inversion delivery/suction on the pressure reading, caused by an
uncorrected wiring (only for Differential pressure control mode).
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