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b5-15 Sleep Function Start Level
Setting Range: 0.0 to 200.0 Hz
Factory Default: 0.0 Hz
b5-16 Sleep Delay Time
Setting Range: 0.0 to 25.5 Seconds
Factory Default: 0.0 Seconds
The Sleep Function can be programmed to prevent running the Drive when the PI loop output or the speed command is so low
that no usable work is being done and/or equipment damage may result. The Sleep Function can be Enabled by entering a
value in parameter b5-15. If the Drive's output drops below the level set by the Sleep Function Start Level (b5-15) and
remains there at least as long as the delay time determined by the Sleep Delay Time (b5-16), then the Drive's internal Run
command drops out and the Drive output ceases. Though the Drive's output has ceased, all other Drive functions continue.
Once the Drive's theoretical output returns to a level above the Sleep Function Start Level (b5-15) and remains above that
level for at least the Sleep Delay Time (b5-16), the internal Run command returns and the Drive output begins again. The b5-
16 Delay Time prevents oscillation about the sleep level.
Note: The sleep function can be used even if the PI function is disabled (b5-01 = "0: Disabled").
b5-17 PI Accel/Decel Time
Setting Range: 0.0 to 25.5 Seconds
Factory Default: 0.0 Seconds
This is a soft start function that is applied to the PI setpoint analog input. Instead of having nearly instantaneous changes in
signal levels, there is a programmed ramp applied to level changes. When changing setpoints the error can be limited by
gradually ramping the setpoint through the use of parameter b5-17.
b5-18 PI Setpoint Selection
Setting
0
Disabled (factory default)
1
Enabled
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t
Outpu
Output
Sleep Level
b5-15
Fig 5.18 Sleep Function Response
Description
Programming 5 - 20
Upper Limit
d2-01
Speed Command
Speed Command
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