Dry Pump - WEG CFW501 V1.8X Programming Manual

HVAC Functions
P0586 – Minimum Run Time
Adjustable
Range:
Properties:
Access groups
via HMI:
Description:
It defines a minimum length of time the compressor will be kept running, not accepting a "Stop" command.
P0587 – Minimum Stop Time
Adjustable
Range:
Properties:
Access groups
via HMI:
Description:
It defines a minimum length of time the compressor will be kept stopped, not accepting a "Run" command.

18.3 DRY PUMP

This parameter group allows the user to configure the dry pump operation detection.
The dry pump detection is intended to avoid the pump driven by frequency inverter to operate at vacuum, i.e.,
without the liquid being pumped. This is done by detecting the operation speed in conjunction with the motor torque.
P1042 – Dry Pump Detection Configuration
Adjustable
Range:
Properties:
Access groups
via HMI:
Description:
This parameter defines how the dry pump detection functionality will go act in the CFW501 frequency inverter.
P1042
0 It defines will not be done the dry pump detection.
It defines the dry pump detection will be enabled and only will generate the alarm message "A0766: Dry pump
1
detected", i.e., the CFW501 frequency inverter will continue control the motor.
It defines the dry pump detection will be enabled and will generate the alarm message "A0766:
2 Dry pump detected" during motor deceleration and the fault "F0767: Dry pump detected" in the CFW501 frequency
inverter after stopping the motor.
18
18-4 | CFW501
0 to 650.00 s
cfg
HVAC
0 to 650.00 s
cfg
HVAC
0 = Disable
1 = Enable Alarm
2 = Enable Fault
cfg
HVAC
Table 18.1: Description of dry pump detection configuration
Description
Factory 5.00 s
Setting:
Factory 5.00 s
Setting:
Factory
0
Setting: