No.

(Hex.)

Name

Description

Default

(Range)

Ref.

L2-01

(0485)

Power Loss Ride Through Select

Sets the drive operation after a momentary power loss.

0
Disable

A momentary power loss triggers Uv1 [DC Bus Undervoltage].

1
Enabled

When power returns in the time set in L2-02 [Power Loss Ride Through Time], the drive will restart. If power does not return in the time set in L2-02, the drive will detect Uv1.

2
Enabled while CPU Power Active

When power returns and the drive control circuit has power, the drive will restart. This will not trigger Uv1.

3
Kinetic Energy Backup: L2-02

If power does not return in the time set in L2-02, the drive will detect Uv1.

4
Kinetic Energy Backup: CPU Power

When power returns and the drive control circuit has power, the drive will restart.

5
Kinetic Energy Backup: DecelStop

When power returns, the drive will continue to decelerate until the motor fully stops.

Note:

When the CPU is inactive, b1-17 [Run Command at Power Up] sets operation at power up.

0

(0 - 5)

Details

No.

(Hex.)

Name

Description

Default

(Range)

Ref.

L2-02

(0486)

Power Loss Ride Through Time

Sets the length of time that the drive will wait before it tries to restart if the DC bus voltage is less than L2-05 [Undervoltage Detection Lvl (Uv1)] after a momentary power loss.

Determined by o2-04, C6-01

(0.0 - 25.5 s)

Details

No.

(Hex.)

Name

Description

Default

(Range)

Ref.

L2-03

(0487)

Minimum Baseblock Time

Sets the minimum time to continue the drive output block (baseblock) after a baseblock.

Determined by o2-04, C6-01

(0.1 - 5.0 s)

Details

No.

(Hex.)

Name

Description

Default

(Range)

Ref.

L2-04

(0488)

Powerloss V/f Recovery Ramp Time

Sets the time for the drive output voltage to go back to correct voltage after completing speed searches.

Determined by o2-04, C6-01

(0.0 - 5.0 s)

Details

No.

(Hex.)

Name

Description

Default

(Range)

Ref.

L2-05

(0489)

Undervoltage Detection Lvl (Uv1)

Sets the voltage at which a Uv1 [DC Bus Undervoltage] fault is triggered or at which the KEB function is activated. Usually it is not necessary to change this setting.

Determined by o2-04 and E1-01

(200 V Class: 150 - 210 V, 400 V Class: 300 - 420 V)

Details

No.

(Hex.)

Name

Description

Default

(Range)

Ref.

L2-06

(048A)

Expert

Kinetic Energy Backup Decel Time

Sets the deceleration time during KEB operation used to decrease the maximum output frequency to 0.

Note:

When L2-29 = 1, 2, or 3 [Kinetic Energy Backup Method = Single Drive KEB Ride-Thru 2, System KEB Ride-Thru 1, or System KEB Ride-Thru 2] and you do KEB Auto-Tuning, the drive will automatically set this value.

0.0 s

(0.0 - 6000.0 s)

Details

No.

(Hex.)

Name

Description

Default

(Range)

Ref.

L2-07

(048B)

Expert

Kinetic Energy Backup Accel Time

Sets the acceleration time to return the frequency to the frequency reference before a power loss after canceling KEB operation.

0.0 s

(0.0 - 6000.0 s)

Details

No.

(Hex.)

Name

Description

Default

(Range)

Ref.

L2-08

(048C)

Expert

Frequency Gain at KEB Start

Sets the quantity of output frequency reduction used when KEB operation starts as a percentage of the motor rated slip before starting KEB operation.

100%

(0 - 300%)

Details

No.

(Hex.)

Name

Description

Default

(Range)

Ref.

L2-09

(048D)

Expert

KEB Minimum Frequency Level

Sets the quantity of output frequency reduction used as a percentage of E2-02 [Motor Rated Slip] when KEB operation starts.

20%

(0 - 100%)

Details

No.

(Hex.)

Name

Description

Default

(Range)

Ref.

L2-10

(048E)

Expert

Minimum KEB Time

Sets the minimum length of time to operate the KEB after the drive detects a momentary power loss.

50 ms

(0 - 25500 ms)

Details

No.

(Hex.)

Name

Description

Default

(Range)

Ref.

L2-11

(0461)

Expert

KEB DC Bus Voltage Setpoint

Sets the target value that controls the DC bus voltage to a constant level in Single Drive KEB Ride-Thru 2. Sets the DC bus voltage level that completes the KEB operation for all other KEB methods.

Determined by E1-01

(Determined by E1-01)

Details

No.

(Hex.)

Name

Description

Default

(Range)

Ref.

L2-29

(0475)

Expert

Kinetic Energy Backup Method

Sets the KEB function operation mode.

0
Single Drive KEB Ride-Thru 1

The drive monitors the DC bus voltage and uses regenerative energy from the motor to hold the DC bus voltage at the level set in L2-11 [KEB DC Bus Voltage Setpoint].

1
Single Drive KEB Ride-Thru 2

The drive uses information about the inertia of the connected machinery to find the deceleration rate necessary to keep the DC bus voltage at the level set in parameter L2-11.

2
System KEB Ride-Thru 1

The drive does not monitor the DC bus voltage. The drive decelerates for the deceleration time set in L2-06 [Kinetic Energy Backup Decel Time].

3
System KEB Ride-Thru 2

The drive uses the KEB deceleration time set in L2-06 to decelerate and it also monitors the DC bus voltage.

0

(0 - 3)

Details

No.

(Hex.)

Name

Description

Default

(Range)

Ref.

L2-30

(045E)

Expert

KEB Zero Speed Operation

Sets the operation when the output frequency decreases below the zero level (DC braking injection starting frequency) during KEB deceleration when L2-01 = 3 to 5 [Power Loss Ride Through Select = Kinetic Energy Backup: L2-02, Kinetic Energy Backup: CPU Power, or Kinetic Energy Backup: DecelStop].

0
Baseblock
 
1
DC/SC Braking

Does DC injection braking and short circuit braking as specified by [DC Inject Braking Time at Stop] and b2-13 [Short Circuit Brake Time @ Stop].

0

(0, 1)

Details

No.

(Hex.)

Name

Description

Default

(Range)

Ref.

L2-31

(045D)

Expert

KEB Start Voltage Offset Level

Sets the KEB start voltage offset.

Determined by A1-02

(200 V Class: 0 - 100 V,400 V Class: 0 - 200 V)

Details