248 Actual signals and parameters
4409
OUTLET PROT
CTRL
NOT SEL
Enables, and selects the mode of, the primary supervision of pump/fan outlet pressure.
Note: Outlet protection is active only when the active reference is PID.
0 = NOT SEL – Primary outlet pressure supervision not used.
1 = ALARM – Detection of high outlet pressure produces an alarm on the control panel
display.
2 = PROTECT –
Detection of high
outlet pressure
produces an alarm
on the control panel
display. The output of
the PI controller is
ramped down
(according to
parameter 4417 PID
OUT DEC TIME) to
the forced reference
(set by parameter
4416 OUTLET
FORCED REF). The
drive will revert to the
original reference if
the pressure
subsequently falls
below the supervision level.
The following diagram describes the outlet pressure supervision function.
3 = FAULT – Detection of high outlet pressure trips the drive on a fault.
4410
AI MEAS OUTLET
NOT SEL
Selects the analog input for pump/fan outlet pressure supervision.
0 = NOT SEL – No analog input selected.
1 = AI1 – Pump/fan outlet pressure monitored through analog input AI1.
2 = AI2 – See selection AI1.
4411
AI OUT HI LEVEL
0.00 … 100.00% 1 = 0.01% 100.00%
Sets the supervision limit for the primary outlet pressure measurement. If the value of
the selected analog input exceeds this limit, the action defined by parameter 4409
OUTLET PROT CTRL is taken after a delay set with parameter 4415 OUTLET CTRL
DLY expires. Supervision level
4412
VERY HIGH CTRL
NOT SEL
Enables, and selects the mode of, the secondary outlet pressure supervision function.
The function uses the analog input selected by parameter 4410 AI MEAS OUTLET.
0 = NOT SEL – Secondary outlet pressure monitoring not used.
1 = STOP – Detection of very high outlet pressure stops the drive. The drive will start
again if the pressure falls below the supervision level.
2 = FAULT – Detection of very high outlet pressure trips the drive on a fault.
4413
AI OUT VERY HIGH
0.00 … 100.00% 1 = 0.01% 100.00%
Supervision level for secondary outlet pressure monitoring function. See parameter
4409 OUTLET PROT CTRL. Supervision level
Group 44: Pump protection
Code Description Range Resolution Default S
Measured outlet
pressure
4415
EXT2 reference
(from PID1OUT)
4413
4411
4417
4416
t
t
To Next Page
Loading...
