User Manual

2
Siemens CE1N4581en
Smart Infrastructure 2020-07-09
Application
To operate Siemens 2-port and 3-port valves:
● Types V..G44.., VVG55.., and VVG549..
● 5.5 mm stroke
Used as control and shutoff valves in heating and ventilation plants.
Together with the ASK30 mounting kit, all former Landis & Gyr valves with 4 mm or 5.5 mm
stroke can also be operated: X3i.., VVG45.., VXG45.., VXG46.., VVI51...
Functions
Function Description Type
3-position control A 3-position signal controls the actuator via connection terminals Y1
or Y2. The desired position is transmitted to the valve.
SAS31..
SAS81..
Modulating control The modulating positioning signal provides stepless motor control.
The positioning signal range (DC 0...10 V / DC 4...20 mA / 0...1000
Ω) corresponds to the positioning range (closed...open, or 0…100%
stroke) in a linear manner.
SAS61..
Positioning signal and
characteristic changeover
Setting with DIL switch.
Factory setting SAS..:
● Characteristic curve: log = Equal percentage (switch set to Off)
● Positioning signal: DC 0...10 V (switch set to Off)
Position feedback U Signal returned to acquire the position via input.
Forced control
(Z-mode)
Forced control helps override automatic mode and is implemented
via higher control.
Calibration Carry out during initial commissioning. The actuator drives to the top
or bottom end position; the measured values are saved.
SAS61..
SAS61../MO
Valve seat detection The actuators have power-dependent seat detection. After
calibration, the exact valve stroke is stored in the actuator's memory.
Foreign body detection After clogging is detected, three attempts are made to get past
clogging. If unsuccessful, the actuator continues to following the
positioning signal only within a limited range, and the LED blinks red.
Modbus RTU (RS-485), not
galvanically isolated
Setpoint 0...100 % valve position
Actual value 0...100 % for valve position
Override control Open / Close / Min / Max / Stop
Setpoint monitoring and backup mode
SAS61../MO