Yaskawa iQpump Programming Manual - Manual (Page 140)

140 YASKAWA TM.iQp.02 iQpump Drive Programming Manual
■
P2-16 No-Flow Setpoint Compensation
Setting Range: 0.0 to 6000.0
Factory Default: 1.5
The iQpump drive can be configured to activate a no-flow detection by programming the No-Flow Activation Level (P2-11). When the
no-flow detection is activated and the No-Flow Detection Time (P2-13) has elapsed, the system setpoint will be lowered by the value
programmed in the No-Flow Setpoint Compensation (P2-16) for the time programmed in No-Flow Stabilization Time (P2-14).
The No-Flow Setpoint Compensation (P2-16) works in conjunction with the No-Flow Stabilization Time (P2-14). The units for this
parameter are determined by the System Units (P1-02).
Refer to the No-Flow Activation Level (P2-11) for further description.
■ P2-17 No-Flow Feedback Delay Time
Setting Range: 0.0 to 1000.0 sec
Factory Default: 2.0 sec
The iQpump drive can be configured to activate a no-flow detection by programming the No-Flow Activation Level (P2-11). When the
no-flow detection process is activated, and the system setpoint has returned to the original value, the feedback will be monitored. If the
feedback level is within the No-Flow Delta Feedback Level (P2-15), a specific delay time can be programmed in the No-Flow Feedback
Delay Time (P2-17) before the drive enters a “sleep” mode.
The No-Flow Feedback Delay Time (P2-17) works in conjunction with the No-Flow Delta Feedback Level (P2-15).
Refer to the No-Flow Activation Level (P2-11) for further description.
■
P2-18 No-Flow Motor RPM Sample Time
Setting Range: 0.0 to 1000.0 sec
Factory Default: 2.0 sec
The iQpump drive can be configured to activate a no-flow detection by programming the No-Flow Activation Level (P2-11). The no-
flow detection function monitors the motor RPM. The motor RPM monitor sample rate can be programmed in the No-Flow Motor RPM
Sample Time (P2-18).
Refer to the No-Flow Activation Level (P2-11) for further description.
■ P2-19 No-Flow Feedback Detection Direction
The iQpump drive can be configured to activate a no-flow detection by programming the No-Flow Activation Level (P2-11). When the
no-flow detection process is activated, and the system setpoint has returned to the original value, the feedback will be monitored. The
direction of the feedback upon return of the no-flow detection can be selected by programming the No-Flow Feedback Detection
Direction (P2-19).
The No-Flow Feedback Detection Direction (P2-19) works in conjunction with the No-Flow Delta Feedback Level (P2-15).
Refer to the No-Flow Activation Level (P2-11) for further description.
Setting Description
0 Outside Bandwidth (P2-15) ( factory default)
1 Inside Bandwidth (P2-15)