Schneider Electric Altivar 12 Manual De Usuario

78

BBV28581  05/2010

FUn-

(continued)

PId-

(continued)

PMP-

(continued)

FtU

T

M Time delay before automatic start for the 
underload fault

0 to 6 min

0 min

If 

Atr

 = 

YES

 the drive restarts automatically after an underload fault 

ULF

 once this time delay has 

elapsed.
Minimum time permitted between an underload being detected and any automatic restart.
In order for an automatic restart to be possible, the value of 

Maximum restart time

 

tAr

 page 

 must 

exceed that of this parameter by at least one minute.

Visible only if 

Application underload time delay

 

ULt

 above is not set to 

nO

.

MdE

M Selecting the operating mode

nO

v

nO

: single variable mode

v

YES

: single variable mode with auxiliary pump

When 

MdE

 = 

YES

, output LO1 is forced to 

PMP

 (see page 

).

Visible only if 

PID feedback assignment

 

PIF

 page 

 is not set to 

nO

.

FOn

T

M Starting frequency of the auxiliary pump

0 to tFr

HSP

Above this frequency and after the pump starting time delay 

tOn

,

the auxiliary pump starts.

Visible only if 

Selecting the operating mode

 

MdE

 above is not set to 

nO

.

tOn

T

M Time delay before starting the auxiliary 
pump

0 to 999.9 s

2 s

This time is necessary to avoid the effects of transient pressure fluctuation and thus prevent oscillation 
(pump starting/stopping).

Visible only if 

Selecting the operating mode

 

MdE

 above is not set to 

nO

.

rOn

T

M Ramp for reaching the auxiliary pump 
nominal speed

0 to 999.9 s

2 s

Visible only if 

Selecting the operating mode

 

MdE

 above is not set to 

nO

.

FOF

T

M Auxiliary pump stopping frequency

0 to tFr

0 Hz

Below this frequency and after the time delay for stopping the auxiliary pump 

tOF

, the pump stops.

Visible only if 

Selecting the operating mode

 

MdE

 above is not set to 

nO

.

T

Parameter that can be modified during operation or when stopped.

I-O-

drC-

CtL-

FUN-

FLt-

COM-