Omron V1000 User Manual Download

Page: 327 / 411

No.

Name

Description

Range

Def.

Control

Mode

Addr.

Hex

Pg.

V/f O

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

0,1

<56>

A A A

4B1

204

L8-07

Output Phase Loss

Protection

Selects the output phase loss detection.

0: Disabled

1: Enabled (triggered by a single phase loss)

2: Enabled (triggered when two phases are lost)

Output phase loss is detected when operating with less than

5% of the drive rated current. Detection can mistakenly occur

if the motor is too small relative to the drive capacity rating

(this parameter should be disabled in such cases).

0 to 2

A A A

4B3

204

L8-09

Output Ground Fault

Detection Selection

Selects the output ground fault detection.

0: Disabled

1: Enabled

0, 1

<12>

A A A

4B5

205

L8-10

Heatsink Cooling Fan

Operation Selection

Controls the heatsink cooling fan operation.

0: Fan On-Run Mode - Fan will operate only when the drive

is running and for L8-11 seconds after stop.

1: Fan always on - Cooling fan operates whenever the drive

is powered up.

0, 1

A A A

4B6

205

L8-11

Heatsink Cooling Fan

Operation Delay Time

This parameter sets the delay time for the cooling fan to shut

off after the run command is removed when L8-10 = 0.

0 to 300

60 s

A A A

4B7

205

L8-12

Ambient Temperature

Setting

Used to input the ambient temperature. This value adjusts the

drives oL2 detection level.

-10 to 50 40 °C A A A

4B8

205

L8-15

oL2 Characteristics Selection

at Low Speeds

Sets the oL2 characteristics at output frequencies below 6 Hz.

0: No oL2 level reduction below 6 Hz.

1: oL2 level is reduced linearly below 6 Hz. It is halved at 0

Hz.

0,1

A A A

4BB

205

L8-18

Soft CLA Selection

Selects the software current limit function. Typically no

adjustment is required.

0: Disabled

1: Enabled

0,1

A A −

4BE

205

L8-19

Frequency Reduction Rate

during oH Pre-Alarm

Specifies the frequency reference reduction gain at overheat

pre-alarm when L8-03 = 4.

0.1 to 1.0

0.8

A A A

4BF

204

L8-29

Current Unbalance Detection

(LF2)

Selects the detection of unbalanced output currents caused

by faulty devices in the output circuit.

0: Disabled

1: Enabled

0 to 1

− − A

4DF

206

L8-35

Installation Method

Selection

Selects the installation type:

0: IP20/Open-Chassis Drive

1: Side-by-Side Mounting

2: NEMA Type 1 Drive

3: Finless Drive or External Heatsink Installation

0 to 3

<12>
<25>

Α Α A 4ECH

206

L8-38

Carrier Frequency

Reduction

Provides protection to the IGBTs by reducing the carrier

frequency at low speeds.

0: Disabled

1: Enabled below 6 Hz

2: Enabled for the whole speed range

0 to 2

<12>

A A A

4EF

206

L8-40 Carrier Frequency Reduction

Time

Sets the time for that the drive continues running with

reduced carrier frequency after the carrier reduction

condition has gone (see also L8-38).

A setting of 0.00 s disables the carrier frequency reduction

time.

0.00 to

2.00

0.50 A A A

4F1

207

L8-41

High Current Alarm

Selection

Configures an alarm when the output current exceeds 150%

of the drive rated current.

0: Alarm disabled.

1: Alarm enabled.

0,1

A A A

4F2

207

<2> Default setting value is dependent on parameter A1-02, Control Method Selection. The value shown is for A1-02 = 0-V/f Control.
<7> Default setting value is 120% when C6-01 is set to 1 (ND) and 150% when C6-01 is set to 0 (HD).
<9> Default setting value is dependent on parameter E1-01, Input Voltage Setting.
<10> Default setting value is dependent on parameter E5-01, Motor Code Selection.
<12> Default setting value is dependent on parameter o2-04, Drive Model Selection.
<24> Values shown here are for 200 V class drives. Double the value when using a 400 V class drive.
<25> Parameter setting value is not reset to the default value during drive initialization, A1-03 = 1110, 2220, 3330.
<29> Setting value 2 is not available A1-02 = 5-PM OLV Control. When enabled, the drive stops accelerating when it exceeds the value of L3-02,

Stall Prevention Level. The drive decelerates after 100 ms and begins accelerating again after restoring the current level.

<31> Use caution when working with regenerative loads as motor speed can exceed the frequency reference during overvoltage suppression function

operation. Set to "Disable" when motor speed needs to accurately match the frequency reference, and also when using a braking resistor. An
ov fault may still occur even when this function is enabled if there is a sudden increase in the regenerative load.

<50> The setting range depends on the control mode set in A1-02. For PM OLV Control the setting range is 0 to 2.

B.2 Parameter Table

326

SIEP C710606 20 OYMC AC Drive - V1000 User Manual

7/16/2008-13:23