Schneider Electric Altivar 12 Manuel D’Utilisation

BBV28581  05/2010

79

FUn-

(continued)

PId-

(continued)

PMP-

(continued)

tOF

T

M Time delay before the auxiliary pump stop 
command

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

.

rOF

T

M Ramp for auxiliary pump stopping

0 to 999.9 s

2 s

Visible only if 

Selecting the operating mode

 

MdE

 above is not set to 

nO

.

nFd

M Zero flow detection period

nO to 20 min

nO

The value 0 deactivates zero flow detection.

Visible only if PID feedback assignment PIF page 70 is not set to nO.

FFd

T

M Zero flow detection activation threshold

0 to 400 Hz

0 Hz

Below this threshold, if 

nFd

 > 0 and the auxiliary pump is stopped,

zero flow detection is activated.

Visible only if 

Zero flow detection period

 

nFd

 above is not set to 

nO

.

LFd

T

M Zero flow detection offset

0 to 400 Hz

0 Hz

Visible only if 

Zero flow detection period

 

nFd

 above is not set to 

nO

.

T

Parameter that can be modified during operation or when stopped.

I-O-

drC-

CtL-

FUN-

FLt-

COM-