Installation Instructions
Document No. 129-561
Installation Instructions
June 15, 2016
Siemens Industry, Inc. Page 7 of 8
To initiate the calibration process insert a flat-blade
screwdriver into the calibration slot to short out the two
sides of the slot. See Figure 19.
Figure 19. Step 1—Bridge Contact.
During calibration, the actuator detects the valve’s end
positions and files the exact stroke in its internal
memory. Calibration takes place in three phases:
Actuator drives to H
0
(1), retracting actuator stem.
Detection of upper end position.
Actuator drives to H
100
(2), extending actuator
stem. Detection of lower end position.
The detected values are stored (3). Then the
actuator follows the applied control signal.
Observe the status indication (LED) during and after
calibration. See Figures Figure 20 and Table 2.
Figure 20. Step 2—Check LED.
Table 2. LED Indication and Status.
LED
Indication
Operating state
Remarks,
troubleshooting
Green
On
Automatic mode
Normal operation
Blinking
Calibration
Wait until calibration is
finished
(then green or red light)
In manual mode
Manual adjuster in
MAN position
Red
On
Calibration error
Start calibration again
Blinking
Detection of
foreign object
Check valve / actuator
Off
Off
No power or
electronics faulty
Check operating
voltage
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.
SAX61.03U Function Check
Perform the function check for modulating actuators
after calibration with a point test according to the
following table:
Table 3. Modulating Function Check.
Connection
Terminals
Actuator
Response
Position
Feedback
(U)
Y
6V
13.6 mA
Actuator’s stem
extends (60%)
6V
Y
5V
12 mA
Actuator’s stem
retracts (50%)
5V
“Z” connected to
“G”
Actuator’s stem
extends to 100%
10V
“Z” connected to
“G0”
Actuator’s stem
retracts to 0%
0V
After successful completion of the function check, the
actuator is ready for normal operation.
SAX81.03U Function Check
Perform the function check for three-position actuators
according to the following table: