Yaskawa E7L Drive Bypass - Manual (Page 127)

Programming 5 - 35
b5-22 PI Snooze Level
Setting Range: 0 to 100%
Factory Default: 0%
b5-23 PI Snooze Delay Time
Setting Range: 0 to 3600 Seconds
Factory Default: 0 Seconds
b5-24 PI Snooze Deactivation Level
Setting Range: 0 to 100%
Factory Default: 0%
The Snooze Function is a variation on the Sleep Function. The Snooze function must be selected by setting parameter
b5-21= “2: Snooze”. Once the Snooze Function is selected, the Drive monitors the output frequency. If the output frequency
drops below the PI Snooze Level (b5-22), and stays below that level for at least the PI Snooze Delay Time (b5-23), the Drive
output shuts off. This is different from the Sleep Function because it is the feedback that must drop below the PI Snooze
Deactivation Level (b5-24) before normal Drive output will begin again. See Figure 5.19 on the following page.
b5-25 PI Setpoint Boost Setting
Setting Range: 0 to 100%
Factory Default: 0%
Just before the Snooze Function is activated, the PI Setpoint can be temporarily increased to create an overshoot of the
intended PI Setpoint. The temporary boost is determined by the PI Setpoint Boost Setting (b5-25). Once the temporary boost
level is reached (or the PI Maximum Boost Time (b5-26) is exceeded), the Drive output shuts off (snoozes) and the intended PI
Setpoint returns. From this point on, the Snooze Function operates normally and the Drive output returns when the feedback
level drops below b5-24. See Figure 5.19 on the following page.