Nidec POWERDRIVE FX 100T, Installation Manual

Page: 32 / 40

32
TRIPS - DIAGNOSTICS
POWERDRIVE FX Installation guide
4729 en - 2017.08 / c
6.2 - Alarms
Alarms may appear during drive operation.
These alarms are for information only, in order to warn the
user: the drive continues to operate but may switch to fault
mode if no corrective action is taken.
The LEDs display alternately "A.L." and a number that can be
used to identify the alarm by means of the table below (this
number corresponds to the value of parameter 10.97 ).
Code No. Meaning
A.L.
1
to
4
User alarm 1 ( 10.54 )
to
User alarm 4 ( 10.57 )
6 Motor overload ( 10.17 )
7 Drive overheating (
10.18
)
8 Microcontroller overoccupancy
9 Rectifier
10 Emergency operation (see menu 20)
6.3 - Trips
If the drive trips, the output bridge is inactive and the drive no
longer controls the motor.
The LEDs display alternately "t.r." and a number that can
be used to identify the trip by means of the table below (this
number corresponds to the value of parameter 10.99 ). For
trips numbered higher than 100, only the last 2 digits are
displayed with a point displayed on both LEDs to indicate the
hundred.
Example :
/ : indicates trip no. 1
/ : indicates trip no. 101
After consulting the table, follow the procedure below:
- Make sure that the drive is disabled (STO-1 and STO-2
terminals open)
- Isolate the drive power supply
- Carry out the necessary checks in order to eliminate the
reason for the trip
- Activate the STO-1 and STO-2 inputs to cancel the trip
• Opening and then closing the STO-1/STO-2 drive
enable terminals may cancel the trip. If the Run FWD or
Run reverse terminal is closed at the time of resetting,
the motor may or may not start immediately, depending
on the setting of Ctr.06 ( 06.04 ).
No. Reason for trip Possible cause and corrective actions
1 DC bus undervoltage
• Check the quality of the power supply (voltage dips)
• Check the input fuses
2 DC bus overvoltage
• Check that the mains voltage is within the permitted
tolerance
• Check the quality of the power supply (commutation
notches or transient overvoltages)
3 Overcurrent at drive output
• Check the motor insulation
• Check the motor cables (connections and insulation)
• Check the quality of the mains supply
5
Motor current imbalance: vectorial sum of the 3 motor
currents not zero
• Check the motor insulation
• Check the cable insulation
6 Loss of a motor phase
Check the motor cable and resistance values between
motor phases
7
The speed is higher than (1.3 x 01.06 ) or
(
01.06
+ 1000 min
-1
)
Check the drive settings
8
The drive overload level exceeds the conditions defined in
section 1.4.2
• Check the drive is suitable for the load
• Check the ambient temperature
9 Internal protection of phase U IGBTs Check the motor and cable insulation
10 Overheating of the rectifier bridge IGBTs
• Clean the cabinet dust filters
• Check the drive ventilation units are working correctly
• Check that the product air inlet temperature is not outside
the limits
11 The measured position does not vary (only if the
MDX-ENCODER option is present)
• Check the encoder wiring
• Check that the motor shaft turns
13
The encoder u, v, w commutation signals are not
connected correctly (only if the MDX-ENCODER option is
present)
Check the conformity of the encoder wiring