Hardware protection: l8 – Yaskawa G5HHP Drive User Manual

Page 304

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User Constants

8.2.7 Protection Constants: L

8 - 38

J

Hardware Protection: L8

C

t t

Name

S tti

F t

Change

Control Methods

Constant

Number

Display

Description

Setting

Range

Factory

Setting

Change

during

Opera-

tion

V/f

V/f

with

PG

Open

Loop

Vector

Flux

Vector

Page

L8-01

Protect selection for

internal DB resistor

(Type ERF)

0: Disabled (no overheating

protection)

1: Enabled (overheating protec-

0, 1

0

x

B

B

B

B

7 - 96

DB Resistor Prot

1: Enabled (overheating protec-

tion)

L8-02

Overheat pre-alarm

level

Sets the detection temperature for

the Inverter overheat detection pre-

alarm in °C.
;

The pre alarm detects when the

50 to

110

95

x

A

A

A

A

7 - 98

L8 02

OH Pre-Alarm Lvl

;

The pre-alarm detects when the

cooling fin temperature reaches

the set value.

110

95

x

A

A

A

A

7 - 98

L8-03

Operation selection

after overheat pre-

alarm

Sets the operation for when the In-

verter overheat pre-alarm goes ON.
0: Ramp to stop in deceleration

time C1-02.

1: Coast to stop
2: Fast stop in fast-stop time

C1-09.

0 to 3

3

x

A

A

A

A

7 - 98

OH Pre-Alarm Sel

C1-09.

3: Continue operation (Monitor

display only.)

;

A fault will be given in setting 0

to 2 and a minor fault will be

given in setting 3.

L8-05

Input open-phase

protection selection

0: Disabled
1: Enabled (Detects if input cur-

rent open-phase, power supply

voltage imbalance or main cir

0, 1

0

x

A

A

A

A

7 - 98

L8 05

Ph Loss In Sel

p

p

p

pp y

voltage imbalance or main cir-

cuit electrostatic capacitor dete-

rioration occurs.)

0, 1

0

x

A

A

A

A

7 - 98

L8-07

Output open-phase

protection selection

0: Disabled
1: Enabled (Output open-phase de-

tected at less than 5% of Invert-

er rated current.)

;

Output open-phase detection may

d t ti

t

k

0,1

0

x

A

A

A

A

7 - 98

L8 07

Ph Loss Out Sel

;

Output open phase detection may

occur or detection may not work

inadvertently when applied mo-

tor capacity is small for Inverter

capacity. In this case, set to 0

(Disabled.)

0,1

0

x

A

A

A

A

7 - 98

8

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