Schneider Electric Altivar 12 사용자 설명서

BBV28581  05/2010

95

FLt-

(continued)

USb-

USb

M Undervoltage fault management

0

O
1

Behavior of the drive in the event of an undervoltage

v

Detected fault and R1 relay open.

v

Detected fault and R1 relay closed.

StP

M Undervoltage prevention

nO

nO

rMP

Behavior in the event of the undervoltage fault prevention level being reached

v

No action (freewheel)

v

Stop following an adjustable ramp 

.

StM

T

M Undervoltage ramp deceleration time

0.0 to 10.0 s

1.0 s

Ramp time if 

 = 

FLt-

(continued)

Strt

M IGBT test

nO

nO

YES

v

No test

v

The IGBTs are tested on power up and every time a run command is sent. These tests cause a slight 
delay (a few ms). In the event of a fault, the drive will lock. The following faults can be detected:

- Drive output short-circuit (terminals U-V-W): SCF display
- IGBT: xtF, where x indicates the number of the IGBT concerned

IGBT short-circuited: x2F, where x indicates the number of the IGBT concerned

LFL1

M 4-20 mA loss behavior

nO

nO

YES

v

Fault ignored. This configuration is the only one possible if 

 is not greater than 3 mA or if 

.

v

Freewheel stop.

InH

M Detected fault inhibition assignment

nO

nO

L1H
L2H
L3H
L4H

To assign fault inhibit, press and hold down the “ENT” key for 2 s.

v

Function inactive

v

L1h:

 LI1 active high

v

L2h:

 LI2 active high

v

L3h:

 LI3 active high

v

L4h:

 LI4 active high

Following detected faults can be inhibited:

InFb

, 

SOF

, 

tnF

,

OHF

, 

OLF

, 

OPF1

, 

OPF2

, 

OSF

, 

SLF1

, 

SLF2

, 

SLF3

, 

tJF

, and 

USF

.

Enabling the fault inhibition parameter 

InH

 will disable the drive controller protection features.

• 

InH

 should not be enabled for typical applications of this equipment.

• 

InH

 should be enabled only in extraordinary situations where a thorough risk analysis demonstrates that the 

presence of adjustable speed drive protection poses a greater risk than personnel injury or equipment damage.

  To change the assignment of this parameter press the “ENT” key for 2 s.

T

Parameter that can be modified during operation or when stopped.

I-O-

drC-

CtL-

FUN-

FLt-

COM-

2 s

2 s