Yaskawa iQpump Controller Programming Manual Manual de usuario descargar pdf (Pagina 154)

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154 YASKAWA TM.iQp.07 iQpump Controller Programming Manual

Table 63 Parameters

Table 64 Fault <0034>

Parameter

No.

Addr.

Hex

Parameter Name

Digital Operator Display

Description Range Default

Location

P1-16 87F

Loss of Prime Time

Prime Time Loss

Delay time before a Loss of Prime fault occurs. Pump protection

criteria specified in P1-14 must be met for the drive to fault. On fault

the drive will coast to a stop.

0 ~ 600 s 20 s Programming

Fault Display Description Cause Countermeasures

LOP

Loss of Prime

Loss of Prime Fault-

Pump has lost its prime.

If the output current drops below the P1-14 Prime Loss Level for

the time specified in P1-16 and the output frequency is at a high

enough level, a “Loss of Prime” fault occurs

Possible causes: Dry Well, Air in System, No Water

Allow the system to pump water

again (must have resistance in

pump).

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