WEG CFW11 Applications Manual page 27

Parameters Description
5.2.2 Sleep Mode
This group of parameters allows the user to configure the system to stop the pump when the pump motor
speed drops below a programmed threshold (low control demand). Even though apparently the pumping
control is off, the output pressure (control process variable) is still monitored for wake up and/or start level
conditions by the minimum voltage level (P1022).
P1035 – Pump Motor Speed below which Solar Pump Drive goes to Sleep Mode
Adjustable 0.0 to 300.0 Hz
Range:
Properties: CFG
Access groups via HMI:
Description:
This parameter defines the value of the pump motor speed below which the system will stop the pump
keeping the control active, i.e., will sleep.
NOTE!
A settin of " " disables the sleep mode, it means that the pump will be started or stopped
accordin to the status of the command "Run/Stop".
P1036 – Time Delay for Solar Pump Drive goes to Sleep Mode
Adjustable 1 to 3600 s
Range:
Properties: CFG
Access groups via HMI:
Description:
This parameter defines the waiting time with the value of the pump motor speed shall remain below the value
set in P1035 in order for sleep mode to be activated and the pump to be stopped.
NOTE!
The alarm message "A750: Sleep Mode Active" will be generated on the HMI of the CFW11
inverter to alert that the Solar Pump Drive is in sleep mode.
P1037 – Control Process Variable Deviation for Solar Pump Drive to Wake Up
Adjustable 0.0 to 300.0
Range:
Properties: CFG
Access groups via HMI:
Description:
This parameter defines the value to be reduced (direct PID) from the control setpoint for starting the pump and
resuming control of the pumping. Becoming this value, it is compared with the control process variable and, if
the value of the control process variable is less than this value, the condition to wake up is enabled.
5.3 PROTECTIONS
This group of parameters allows the user to configure the protections as dry pump, maximum pressure and
minimum pressure as dry pump protections, maximum pressure and minimum pressure. If the system activates
pumping without pressure control, the time parameter P1045 and P1047 must be set to "0" so that as pipe
pressure protection functions remain disabled.
SPLC
SPLC
SPLC
Application Default Setting: 0.0 Hz
Application Default Setting:
Application Default Setting:
Solar Pump Drive | 27
10 s
0.0