Yaskawa iQpump Controller Programming Manual - Manual (Page 167)

YASKAWA TM.iQp.07 iQpump Controller Programming Manual 167
◆ P2-13 No-Flow Detection Time
Setting Range: 0.0 ~ 1000.0 s
Factory Default: 5.0 s
The iQpump drive can be configured to activate a no-flow condition by programming the No-Flow Activation Level (P2-11) and No-Flow
Detection Bandwidth (P2-12). The no-flow detection activates when the motor rpm remains within the programmed bandwidth (P2-12)
for a time programmed in the No-Flow Detection Time (P2-13).
The No-Flow Detection Time (P2-13) works in conjunction with the No-Flow Detection Bandwidth (P2-12) and the No-Flow Feedback
Level (P2-15).
Refer to the No-Flow Activation Level (P2-11) for more details.
◆ P2-14 No-Flow Stabilization Time
Setting Range: 0.0 ~ 1000.0 s
Factory Default: 5.0 s
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, the system setpoint will be lowered by the value programmed in the No-Flow Setpoint Compensation (P2-
16) for a specific time as programmed by the No-Flow Stabilization Time (P2-14). After the time programmed in P2-14 has elapsed, the
system setpoint will return to the original setting.
The No-Flow Stabilization Time (P2-14) works in conjunction with the No-Flow Setpoint Compensation (P2-16).
Refer to the No-Flow Activation Level (P2-11) for more details.
◆ P2-15 No-Flow Delta Feedback Level
Setting Range: 0.0 ~ 6000.0
Factory Default: 1.0
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, the feedback level is monitored and compared to the system setpoint. If the difference between the system
setpoint and the feedback level exceeds the No-Flow Delta Feedback Level (P2-15) for a time specified by the No-Flow Feedback Delay
Time (P2-17), the drive will enter a “sleep” mode.
The No-Flow Delta Feedback Level (P2-15) works in conjunction with the No-Flow Feedback Delay Time (P2-17). The units for this
parameter are determined by the System Units (P1-02).
Refer to the No-Flow Activation Level (P2-11) for more details.
Note: The feedback detection direction can be selected by programming No-Flow Feedback Detection Direction (P2-19).
◆ P2-16 No-Flow Setpoint Compensation
Setting Range: 0.0 ~ 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 more details.