Yaskawa iQpump Controller Programming Manual - Manual (Page 150)

150 YASKAWA TM.iQp.07 iQpump Controller Programming Manual
The iQpump drive can be configured to display a High Feedback (HFB) alarm when the feedback level rises above the programmed High
Feedback Level (P1-09) for the time programmed in the High Level Fault Delay Time (P1-10).
Setting P1-10 to a value of 0 will disable this function.
The High Level Fault Delay Time (P1-10) works in conjunction with High Feedback Level (P1-09).
If P1-01 = 3, the function will stop all drives running on the network when the system fault occurs. <0034>
This function is active during operation in the Hand Mode, Auto Mode, Pre-charge, and Thrust-Bearing Mode.
◆ P1-11 Maximum Setpoint Difference
<0032>
Setting Range: 0.0 ~ 6000.0
Factory Default: 0.0 (system units P1-02)
The iQpump drive can be configured to display a Not Maintaining Setpoint (NMS) fault when the difference between the setpoint and the
feedback exceeds the Maximum Setpoint Difference (P1-11). When the Maximum Setpoint Difference has been exceeded, the drive will
trip on NMS fault and will coast to a stop when the fault occurs.
The faults Not Maintaining Setpoint (NMS), Loss of Prime (LOP), High Feedback / High Water (HFB / HW), Low Feedback / Low
Water (LFB / LW), Low Flow (LOWFL), High Flow (HIFLO), and Accumulated Level (ACCUM) are considered System Faults. When
these faults occur, all the drives in the network need to be stopped and prevented from running until the fault is cleared or auto-
restarted.
<0034>
When a system fault is detected on a drive, the iQpump MEMOBUS / Modbus Network sends out a system message to all other drives
informing them of the fault, stopping any drives that are running, and preventing any drives from running until the fault is no longer
present. Resetting the fault on the drive will clear the message.
<0034>
When Fault Restarts are enabled (L5-01 > 0, P4-07 and P4-08 set appropriately), system faults do not consume L5-01 attempts, but
instead uses a new parameter P9-22 System Fault Retry. The system fault retry attempts apply to all the drives on the network and gets
incremented when a drive with a system fault auto-restarts. For proper operation, P9-22 should be set the same for all drives on the
iQpump MEMOBUS / Modbus Network (P1-01 = 3).
Setting P1-11 to a value of 0 will disable this function. This function is only active during operation in the Auto Mode.
The Maximum Setpoint Difference (P1-11) works in conjunction with the Not Maintaining Setpoint (P1-12). The units for this parameter
are determined by the System Units (P1-02).
If P1-01 = 3, the function is active on the lead drive, but will stop all drives running on the network when the system fault occurs. Refer to
Figure 114. <0034>
Parameter
No.
Addr.
Hex
Parameter Name
Digital Operator Display
Description Range Default
Menu
Location
P1-10

609
High Feedback Level Fault
Delay Time
Hgh Lvl FLT Time
System will fault HFB / HW “High Feedback / Water Fault” when feedback
level rises above the programmed level for a time specified in P1-10.
On fault the drive will coast to a stop.
This function is active during running in all operation modes. If
P1-01 = 3, function will stop all drives running on the network when the fault
occurs (system fault).
0 ~ 3600 s 2 s Programming
 Denotes that parameter can be changed when the drive is running.
Parameter
No.
Addr.
Hex
Parameter Name
Digital Operator Display
Description Range Default
Menu
Location
P1-11

106
Maximum Setpoint Difference
Max Set-Pnt Diff
When system is running and the difference between setpoint and
feedback exceeds level in P1-11 for the time specified in P1-12 the
drive will trip on a NMS “Not Maintaining Setpoint” fault. On fault
the drive will coast to a stop.
A value of 0 disables this function. This function is only active during
running while operating in auto mode. If P1-01 = 3, function is active
on the lead drive but will stop all drives running on the network when
the fault occurs (system fault).
0.0 ~
6000.0
0.0
(system
units
P1-02)
Programming
 Denotes that parameter can be changed when the drive is running.