Forced Control Z - Siemens Acvatix SAX Series Basic Documentation

SA..61.. only
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Siemens
Building Technologies
4.12

Forced control Z

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