WEG CFW300 V1.3X, Programming Manual

Page: 156 / 157

SoftPLC
18-18 | CFW300
18
P937 – Time to Wake Up
Adjustable
Range:
0.0 to 999.9 s
Factory
Setting:
5.0 s
Properties:
Description:
This parameter defines the time the wake up mode active condition should remain to start the motor and control
the system. The control process variable must remain smaller (direct PID) or greater (reverse PID) than the
deviation defined in P936 for the time set in P937 for the motor to be started and its speed controlled. In case
the wake up condition (P937) remains inactive for some time, the timer is reset and the time count is restarted.
NOTE!
If, in the energization of the inverter, the "Run/Stop" command is active and the condition to Wake
Up is active, the time programmed in P937 will not be waited for, and thus the motor will be started
instantly.
P938 – Motor Speed to Activate the Sleep Mode
Adjustable
Range:
0.0 to 400.0 Hz
Factory
Setting:
0.0 Hz
Properties:
Description:
This parameter defines the motor speed value below which the motor will be switched off and go into the sleep
mode.
NOTE!
Setting it to “0.0 Hz” disables the sleep mode; that means the motor will be switched on or off
according to the state of the “Run/Stop” command.
P939 – Time to Activate the Sleep Mode
Adjustable
Range:
0.0 to 999.9 s Factory
Setting:
10.0 s
Properties:
Description:
This parameter defines the time the motor speed should remain below the value set in P938 for the motor to
be switched off and go into the sleep mode.
NOTE!
The alarm message “A750: Sleep Mode Active” will be shown on the HMI of the CFW300 frequency
inverter warning that the motor is in the sleep mode.
Figure 18.4 on page 18-19 shows an analysis of the PID controller operation programmed with control action in
direct mode and configured for the Sleep Mode.