HVAC Functions
18-4 | CFW501
18
P0586 – Minimum Run Time
Adjustable
Range:
0 to 650.00 s Factory
Setting:
5.00 s
Properties: cfg
Access groups
via HMI:
HVAC
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:
0 to 650.00 s Factory
Setting:
5.00 s
Properties: cfg
Access groups
via HMI:
HVAC
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:
0 = Disable
1 = Enable Alarm
2 = Enable Fault
Factory
Setting:
0
Properties: cfg
Access groups
via HMI:
HVAC
Description:
This parameter defines how the dry pump detection functionality will go act in the CFW501 frequency inverter.
Table 18.1: Description of dry pump detection configuration
P1042 Description
0 It defines will not be done the dry pump detection.
1
It defines the dry pump detection will be enabled and only will generate the alarm message “A0766: Dry pump
detected”, i.e., the CFW501 frequency inverter will continue control the motor.
2
It defines the dry pump detection will be enabled and will generate the alarm message “A0766:
Dry pump detected” during motor deceleration and the fault “F0767: Dry pump detected” in the CFW501 frequency
inverter after stopping the motor.
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