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Idiomas disponibles
Troubleshooting
Number of flashes
Alarm
Alarm description
Alarm recovery period
Consecutive alarms for
hard reset
Action to recover alarm
Troubleshooting
Number of flashes
Alarm
Alarm description
Alarm recovery period
Consecutive alarms for
hard reset
Action to recover alarm
Troubleshooting
Number of flashes
Alarm
Alarm description
Alarm recovery period
Consecutive alarms for
hard reset
Action to recover alarm
Troubleshooting
22/02/19
HDMS Troubleshooting Guide - Rev 1.0
5
Locked rotor
This alarm is triggered when I
ms approx.)
I
= current measured on main winding (R)
RUN
I
= current measured on L/L1 (current drawn from mains)
TOT
Note: Unless the value of FLC is modified via Modbus, the default value of FLC = Ie.
5 minutes
5
The alarm will self-recover after 5 minutes.
• Check that the HDMS model is suitably rated for the motor.
• Check motor windings resistance to check if motor is damaged.
6
Excess ramp-up time
The HDMS limits the maximum motor start time to a maximum of 1 second. If the motor
does not reach full speed within this time, the HDMS will trigger this alarm.
5 minutes
5
The alarm will self-recover after 5 minutes.
• Check that the HDMS model is suitably rated for the motor.
• Check motor windings resistance to check if motor is damaged.
• Check for high pressure difference during start
• Check the mains voltage level during motor start. In case of too low voltage, the HDMS
might not supply enough current to start the load.
• Check that the run capacitor has the correct capacitance value according to manufac-
turer recommednations.
• Check that main (R) winding is connected properly.
7
Over-temperature
The HDMS is equipped with a NTC sensor. If the measured temperature ≥ 72ºC (and lower
than -30ºC) for ≥ 0.5 s the HDMS will trigger this alarm.
5 minutes
(or longer depending on the cooling time required for the temperature to settle to within the
permissible temperature limits)
5
The alarm will self-recover.
• Check that the HDMS surrounding temperature and ensure that there is enough ventila-
tion around it
• Check for sources with high heat dissipation
• Make sure that the number of starts per hour specified is not exceeded
≥ 8 x Ie OR I
is ≥ 8 FLC for at least 5 mains cycles (100
RUN
TOT
EN
4
Carlo Gavazzi Ltd.
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