Name: YASKAWA E1000
Brand: YASKAWA
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5.2 b: Application

154 YASKAWA ELECTRIC SIEP C710616 35D YASKAWA AC Drive E1000 Technical Manual

■ b5-21: PI Sleep Input Source

Parameter b5-21 selects the sleep function characteristic action.

When b5-21= 1, the sleep function start level (b5-15) is compared to the drive’s output (Speed Command after PI block).

This is the setting that should be used for open loop control.

It is also possible to have the sleep function start level (b5-15) compared to the drive input or setpoint. For this special

application set b5-21 = 0.

When b5-21= 2, a variation of the sleep function called “Snooze” is enabled, see parameter b5-22 to b5-27.

0: PI Setpoint

1: SFS input

2: Snooze

■ b5-22: PI Snooze Level

Sets the PI Snooze function start level as a percentage of maximum frequency.

■

b5-23: PI Snooze Delay Time

Sets the PI Snooze function delay time in terms of seconds.

■

b5-24: PI Snooze Deactivation Level

When the PI feedback drops below this level, normal operation starts again. Sets as a percentage of maximum frequency.

■

b5-25: PI Setpoint Boost Setting

Temporary increase of PI setpoint to create an overshoot of the intended PI setpoint.

■

b5-26: PI Maximum Boost Time

Associated with the Snooze Function. In cases where the temporary PI Setpoint (intended PI setpoint + PI Setpoint

Boost) cannot be reached within the PI Maximum Boost Time (b5-26), the Setpoint Boost is interrupted and the Drive

output is turned off.

■

b5-27: PI Snooze Feedback Level

This is a second method of initiating the Snooze Function. If the PI feedback level exceeds the PI Snooze Feedback Level

(b5-27), then the drive output shuts off. Once the PI feedback drops below the PI Snooze Deactivation Level (b5-24) then

normal drive and PI operation return. Snooze activates if both b5-22 and b5-27 conditions are met. There is no time delay

for deactivation. Sets as a percentage of maximum frequency.