Cable Break Detection
VPPI-… -A4-…
³
2 mA
Cable break detection active. With analogue
input values below 2 mA, the error "Cable break"
is displayed and the valve moves to the normal
position.
<
500 mV
Cable break detection inactive.
VPPI-… -V1-…
³
500 mV
Cable break detection active. With analogue
input values below 500 mV, the error "Cable
break" is displayed and the valve moves to the
normal position.
Tab. 17 Cable Break Detection
Zero Point Suppression
Valve variant
Menu setting "Pressure
min"
Response with setpoint value
<
0.7 % Full scale
0 MPa
Exhaust to 0 bar and keep the exhaust open.
VPPI-… -... L… H-…
>
0 MPa
Active control on "Pressure min".
–
0.1 MPa
Valve moves to normal position.
VPPI-… -1V1H-…
>
–
0.1 MPA
Active control on "Pressure min".
VPPI-… -1V0H-…
–
Active control on "Pressure max".
Tab. 18 Zero Point Suppression
Setpoint values
<
0.7 % Full scale above the minimum input value ("Input min") are interpreted as
the lowest input value in order to suppress noise at the input signal
è
Fig.14. Depending on the valve
variant and the minimum input pressure, there may be a special response in this area
è
Tab. 18 Zero Point Suppression.
Technical Data
26
Festo — VPPI-...-D — 2019-12
