dooch Q-Drive NQ-0075-S, User Manual, Page: 73 / 80

[CHAPTER 7 CAUSE OF FAULT AND REACTION]
7-6
| DOOCHPUMP
Er-10 (Low Voltage Trip-tLv)
Cause
ㆍ
Occurred when the power supply voltage is low
ㆍ
Occurred when the connected load is larger than the power capacity
Reaction
ㆍ
Check the drive input voltage.
ㆍ
Check the power capacity.
It is possible to check the DC Link voltage on FND display part.
Er-11 (High Voltage Trip-tOv)
Cause
ㆍ
Occurred when the deceleration time (dr-23) is short comparing to the load inertia.
ㆍ
Occurred when the drive input voltage is too high.
Reaction
ㆍ
Increase the deceleration time (dr-23).
ㆍ
Check the driver power supply voltage.
It is possible to check the DC Link voltage on FND display part.
Related Function Function Name Ref. Page
6-18 Falling Time dr-23
Er-12 (Motor Overload Operation Trip-tOL)
Cause
ㆍ
It generates an alarm and stops operation to protect the motor when the load is above the
overload trip level of the motor rated current (dr-31) and the motor operates for more than
overload trip time (dr-32). That is, if the rated current of the motor is 10[A], the overload trip
level is 120%, and the overload trip time is 5 seconds, the overload operation trip will be
generated when the pump operates above 12[A] of output current for more than 5 seconds.
Reaction
ㆍ
Check the rated current of the motor (on the nameplate) and the rated current setting (dr-12).
It is possible to check the DC Link voltage on FND display part.
Related Function Function Name Ref. Page
Motor Capacity dr-10
dr-12 Rated Current of Motor
6-16
6-18
6-19
dr-30 Motor Overload Trip Selection
dr-31 Motor Overload Trip Level
dr-32 Motor Overload Trip Time
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