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Siemens
Actuators SAX.., SAY.., SAV.., SAL.. for valves
CE1P4040en
Building Technologies
Functions and control
2018-12-05
4.12 Forced control Z
Forced control is affected by changeover of acting direction. It uses the following
operating modes:
Z-mode
No function
Fully open
Fully closed
Overriding
positioning signal “Y“
by 0…1000
Ω
Conn
ec
tion
s
Tran
s
mi
s
si
on
Equal-percentage or
linear characteristic
Equal-percentage or
linear characteristic
Contact “Z“ not
connected,
valve follows
positioning signal ”Y”
Contact “Z“ is
connected directly to
“G“,
positiong signal ”Y” has
no impact
Contact “Z“ is
connected directly to
“G0“,
positiong signal ”Y”
has no impact
Contact “Z“ is
connected to “M“ via
resistor “R“,
starting point at 50
Ω
,
end point at 900
Ω
,
positioning signal ”Y”
has no impact
The operating modes "Z" shown are based on factory setting "direct acting" and a
"push to open" valve.
SA..61.. only
Note