Yaskawa iQpump Controller Programming Manual - Manual (Page 154)

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
Menu
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).