P11.00

Phase loss protection

0x00–0x11

LED ones:

0: Input phase loss   protection disable

1: Input phase loss   protection enable

LED tens:

0: Output phase loss   protection disable

1: Output phase loss   protection enable

11

○

P11.01

Frequency-decreasing at sudden power loss

0: Disable

1: Enable

0

○

P11.02

Frequency decreasing ratio at sudden power   loss

Setting range:   0.00Hz/s–P00.03 (Max. frequency)

After the   power loss of the grid, the bus voltage drops to the sudden   frequency-decreasing point, the VFD begin to decrease the running frequency   at P11.02, to make the VFD generate power again. The returning power can   maintain the bus voltage to ensure a rated running of the VFD until the recovery of power. 

Note:

1. Adjust   the parameter properly to avoid the stopping caused by VFD protection during   the switching of the grid.

2. Disable input   phase loss protection to enable this function.

10.00

Hz/s

○

P11.03

Overvoltage stall protection

0:Disable

1: Enable

1

○

P11.04

Voltage   protection of overvoltage stall

120–150%(standard bus voltage)( 380V)

136%

○

120–150%(standard bus voltage)( 500V)

132%

120–150%(standard bus voltage)(660V)

120%

P11.05

Current limit action selection

The actual   increasing ratio of motor speed is lower than the ratio of output frequency   because of the big load during ACC running. It is necessary to take measures   to avoid overcurrent fault and the VFD trips.

Ones: current limit:

0: Invalid

1: Valid

Tens: overload alarm   of hardware current limit (for factory commissioning)

0: Valid

1: Invalid

01

◎

P11.06

Automatic current limit

During the running   of the VFD, it will detect the output current and compare it with the limit   level defined in P11.06. If it exceeds the level, the VFD will run at stable   frequency in ACC running, or the VFD will derate to run during the constant   running. If it exceeds the level continuously, the output frequency will keep   on decreasing to the lower limit. If the output current is detected to be   lower than the limit level, the VFD will accelerate to run.

Setting range of P11.06: 50.0–200.0%

Setting range of   P11.07: 0.00–50.00Hz/s

160.0%

◎

P11.07

Frequency-decreasing ratio during current   limit

10.00

Hz/s

◎

P11.08

Overload pre-alarm of motor/VFD

The output current   of the VFD or the motor is above P11.09 and the lasting time is beyond   P11.10, overload pre-alarm will be output.

Setting range of   P11.08:

Enable and define   the overload pre-alarm of the VFD or the motor.

Setting range: 0x000–0x131

LED ones:

0: Overload   pre-alarm of the motor, corresponding to the rated current of the motor

1: Overload pre-alarm   of the VFD, corresponding to the rated current of the VFD

LED tens:

0: The VFD continues   to work after underload pre-alarm

1: The VFD continues   to work after underload pre-alarm and the VFD stops to run after overload   fault

2: The VFD continues   to work after overload pre-alarm and the VFD stops to run after underload   fault

LED hundreds :

0: Detection all the   time

1: Detection in   constant running

Setting range of   P11.09: P11.11–200%

Setting range of   P11.10: 0.1–3600.0s

0x000

○

P11.09

Overload pre-alarm detection

150%

○

P11.10

Overload pre-alarm detection time

1.0s

○

P11.11

Underload pre-alarm detection

If the VFD current   or the output current is lower than P11.11, and its lasting time is beyond   P11.12, the VFD will output underload pre-alarm.

Setting range of   P11.11: 0–P11.09

Setting range of   P11.12: 0.1–3600.0s

50%

○

P11.12

Underload pre-alarm detection time

1.0s

○

P11.13

Output terminal action during fault

Select the action of   fault output terminals on undervoltage and fault reset.

0x00–0x11

LED ones:

0: Action under   fault undervoltage

1: No action under   fault undervoltage

LED tens:

0: Action during the   automatic reset

1: No action during   the automatic reset

0x00

○

P11.14

Speed deviation detection 

0.0–50.0%

Set the speed   deviation detection time.

10.0%

○

P11.15

Speed deviation detection time

This parameter is   used to see the speed deviation detection time.

Setting   range of P11.15: 0.0–10.0s

0.5s

○

P11.16

Automatic   frequency-decreasing at voltage drop

0: Invalid

1: Valid; ensure rated output torque when voltge   drop

0

○