Basic Documentation

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Siemens Actuators SAX.., SAY.., SAV.., SAL.. for valves CE1P4040en
Smart Infrastructure Functions and control 2020-01-30
Calibration takes place in the following phases:
· Actuator drives to H
0
(1), valve closes. Detection
of upper end position.
· Actuator drives to H
100
(2), valve opens.
Detection of lower end position.
· The detected values are stored (3). Then the
actuator follows the positioning signal.
· If the actuator does not detect the second end
position within an appropriate stroke range
(max. 25 mm), the first end stop will be adopted
and the actuator operates with a working range
of 20 mm.
The internal position feedback is set to 0% during calibration. For a setpoint > 0%,
the actuator detects calibration based on the deviation between setpoint and stroke
position and reports this in Register 769 with the warning “Mechanical error, device
blocked, manual intervention or calibration”. The LED on the actuator cover blinks
green, the LED on the cable adapter is red.
After calibration is completed, the actuator follows the external setpoint, the
warning is reset, the LED on the cover changes to continuous green and the cable
adapter blinks green (communication active).
Observe status indication (LED) during and after calibration (page 70).
The calibration cannot be started via the bus.
4.13.4 Manual adjustment
The actuator’s internal stroke position measurement is inactive during manual
adjustment.
The position feedback changes to 0% once the manual adjuster is pressed and
remains on the value during manual adjustment. The actuator detects manual
action based on the deviation between the setpoint and the stroke position and
after 10 seconds reports in register 769 with the warning “Mechanical error, device
blocked, manual intervention or calibration”. The LED on the actuator cover blinks
green, the LED on the cable adapter is red.
Upon return to automatic mode, the actuator synchronizes to stroke position 0%.
After the synchronization, the actuator follows the pending setpoint, the LED on the
cover changes to continuous green and, on the cable adapter, blinking green
(communication active). The warning in register 769 is reset.
4.13.5 Modbus Registers
Reg. Name R/W Range / listing Factory setting
Process values
1 Setpoint RW 0…100% = 0…10000
-
2 Forced control RW 0 = Off / 1 = Extend / 2 = Retract / 3 = Stop
3 Actual value R 0…100% = 0…10000
256 Command RW 0 = Ready or calibration in progress /
1 = Not available / 2 = Self test /
3 = Reinitialize / 4 = Remote reset
Note