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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
ConnectionsTransmission
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