WEG CFW501 V1.8X, Programming Manual, Page: 184 / 192

HVAC Functions
18-26 | CFW501
18
P1076 – Value for Low Level Alarm of the Process Variable of the External PID
Controller
Adjustable
Range:
-32768 to 32767
Factory
Setting:
2
Properties:
Access groups
via HMI:
HVAC
Description:
This parameter defines the value below which it will be considered low level for the process variable of the
external PID controller according to its engineering unit.
NOTE!
This parameter will be viewed according to the selection of the parameters for the engineering unit
2 (P0512 and P0513).
P1077 – Time for Low Level Alarm of the Process Variable of the External PID
Controller
Adjustable
Range:
0.00 to 650.00 s
Factory
Setting:
5.00 s
Properties:
Access groups
via HMI:
HVAC
Description:
This parameter defines the time with the low level condition of the process variable of the external PID controller,
so that the alarm message “A0786: Low level alarm of the process variable of the external PID controller” will
be generated. With P1075 programmed for 2, the fault “F0787: Low level fault of the process variable of the
external controller” will be generated after the motor driven by the CFW501 frequency inverter is decelerated
and is no longer spinning.
NOTE!
The value set to 0.00 s disables the alarm detection.