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L7: torque limit, L8: drive protection – Yaskawa CIMR-LU Drives User Manual

Page 192

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B Parameter Table

192

YASKAWA ELECTRIC TOEP C710616 38F YASKAWA AC Drive L1000A Quick Start Guide

L7: Torque Limit

L8: Drive Protection

No.

Name

Description

Setting

L7-01

Forward Torque Limit

Sets the torque limit value as a percentage of the motor rated torque. Four individual
quadrants can be set.

Default: 200%
Min: 0%
Max: 300%

L7-02

Reverse Torque Limit

Default: 200%
Min: 0%
Max: 300%

L7-03

Forward Regenerative
Torque Limit

Default: 200%
Min: 0%
Max: 300%

L7-04

Reverse Regenerative
Torque Limit

Default: 200%
Min: 0%
Max: 300%

L7-16

Torque Limit Process at
Start

0: Disabled
1: Enabled

Default: 1
Min: 0
Max: 1

No.

Name

Description

Setting

L8-02

Overheat Alarm Level

An overheat alarm will occur if the heatsink temperature exceeds the level set in L8-
02.

Default:

<4>

Min: 50

°C

Max: 150

°C

L8-03

Overheat Pre-Alarm
Operation Selection

0: Ramp to stop. A fault is triggered.
1: Coast to stop. A fault is triggered.
2: Fast Stop. Decelerate to stop using the deceleration ramp in C1-09. A fault is
triggered.
3: Continue operation. An alarm is triggered.

Default: 3
Min: 0
Max: 3

L8-05

Input Phase Loss
Protection Selection

Selects the detection of input current phase loss, power supply voltage imbalance, or
main circuit electrolytic capacitor deterioration.
0: Disabled
1: Enabled always
2: Enabled during operation
3: Enabled during constant speed
Setting 1 cannot be selected for 600 V class drives.

Default:

<4>

Min: 0
Max: 3

L8-06

Input Phase Loss Detection
Level

When ripple is observed in the DC bus, expansion of the input bias is calculated and
becomes the input phase if the difference between the max and minimum values of the
ripple are greater than L8-06.
Detection Level = 100% = Voltage class

× (determines standards for setting values)

Default:

<4>

Min: 0.0%
Max: 50.0%

L8-07

Output Phase Loss
Protection Selection

0: Disabled
1: Enabled (triggered by a single phase loss)
2: Enabled (triggered when two phases are lost)
3: Fault at phase loss at start or when two phases lost mid-operation
Note: Setting 3 is available in the control mode V/f or OLV for drives with software
versions PRG: 7200 or later.

Default: 0
Min: 0
Max: 3

L8-09

Output Ground Fault
Detection Selection

0: Disabled
1: Enabled

Default: 1
Min: 0
Max: 1

L8-10

Heatsink Cooling Fan
Operation Selection

0: Run with timer (Fan operates only during run and for L8-11 seconds after stop.)
1: Run always (Cooling fan operates whenever the drive is powered up.)
2: Temperature controlled (Cooling fan operated depending on the temperature of the
drives heatsink.)

Default: 0
Min: 0
Max: 2

L8-11

Heatsink Cooling Fan Off
Delay Time

Sets a delay time to shut off the cooling fan after the Up/Down command is removed
when L8-10 = 0.

Default: 60 s
Min: 0 s
Max: 300 s

L7-01

L7-03

L7-02

L7-04

Output Torque

Positive Torque

REV

Negative Torque

FWD

Motor
r/min

Regeneration

Regeneration

2

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