252 Actual signals and parameters
STOP Detection of very low inlet pressure stops the drive. The
drive starts again if the pressure exceeds the supervision
level.
1
FAULT Detection of very low inlet pressure trips the drive on a fault. 2
4405 AI IN VERY
LOW
Supervision level for the secondary inlet pressure
monitoring function. See parameter 4401 INLET PROT
CTRL.
0.00%
0.00…100.00% Supervision level 1 = 0.01%
4406 DI STATUS
INLET
Selects the digital input for connection of a pressure switch
at the pump/fan inlet. The “normal” state is 1 (active). If the
selected input switches to 0 (inactive), the action defined by
parameter 4401 INLET PROT CTRL is executed after the
delay set by parameter 4407 INLET CTRL DLY expires.
NOT SEL
NOT SEL No digital input selected 0
DI1 Pump/fan inlet pressure monitored through digital input DI1 1
DI2 See selection DI1. 2
DI3 See selection DI1. 3
DI4 See selection DI1. 4
DI5 See selection DI1. 5
4407 INLET CTRL
DLY
Sets the delay after which the action defined by parameter
4401 INLET PROT CTRL is taken on detection of low inlet
pressure
60.0 s
0.0…1800.0 s Delay time 1 = 0.1 s
4408 INLET
FORCED REF
This reference is used after detection of low inlet pressure.
See parameter 4401 INLET PROT CTRL.
WARNING! Make sure that it is safe to continue
operation using this reference.
0.0%
-100.0…
100.0%
Forced reference 1 = 0.1%
4409 OUTLET PROT
CTRL
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.
NOT SEL
NOT SEL Primary outlet pressure supervision not used 0
ALARM Detection of high outlet pressure produces an alarm on the
control panel display.
1
All parameters
No. Name/Value Description Def/FbEq
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