Sleep Mode - WEG CFW100 Programming Manual

APPLICATIONS
P934 - PID Controller Sampling Period
Range:
Properties:
Description:
This parameter defines the sampling time of the PID controller.
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NOTE!
Table 14.3 on page 14-4
be controlled by the PID controller.
P935 - Filter for the PID Controller Control Setpoint
Range:
Description:
This parameter configures the time constant of the 1st order filter to be applied to the PID controller control setpoint,
and it is intended to reduce sudden changes in the control setpoint value of the PID controller.

14.1.4 Sleep Mode

This parameter group allows the user to set the operation conditions of the sleep mode.
Sleep Mode is a controlled system state in which the control demand is zero or almost zero, and, at this moment,
the motor driven by the frequency inverter may be switched off. That prevents the motor from running at a low
speed, doing little or nothing for the controlled system. Even if the motor is apparently OFF, the process variable
continues to be monitored so that, when necessary, the controlled system can start the motor again according to
the conditions of the wake up mode.
Wake Up Mode switches on the motor when the difference between the control process variable and the control
setpoint is greater than a certain programmed value.
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NOTE!
The sleep mode only actuates if the PID controller is enabled and in the automatic mode.
DANGER!
!
When the inverter is in the sleep mode, the motor may spin at any moment because of the process
conditions. If you wish to handle the motor or execute any kind of maintenance, power down the
inverter.
P936 - Deviation of the Control Process Variable to Wake Up
Range:
Description:
This parameter defines the value to be subtracted from (direct PID) or added to (reverse PID) the control setpoint to
start the motor and return to the system control. This value is compared to the control process variable, and, if the
control process variable value is smaller (direct PID) or greater (reverse PID) than this value, the wake up condition
14
is enabled.
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NOTE!
This parameter will be viewed according to the selection of the parameters for the SoftPLC engineering
unit (P510 and P511).
14-14 | Micro Mini Drives
0.050 to 9.999 s
cfg
suggests setting values for the sampling time according to the process to
0.000 to 9.999 s
-99.99 to 99.99