Siemens SIPART Series - Page 141

Commissioning
7.6 Device replacement
SIPART PS2 with and without HART
Operating Instructions, 10/2013, A5E00074631-11
139
10.The new positioner is ready for operation when the displayed and noted values match.
11.Release the fixing of the actuator.
Second possibility - without communication
1. Fix the actuator at its current position mechanically or pneumatically. Use the locking
function of your mounting kit, if available.
2. Determine the actual position value. To do this, read the actual position value on the
display of the previous positioner. Note down the read value.
Note
Electronics defect
If the positioner's electronics is defective, measure the actual position value with a ruler or
protractor at the a
ctuator or valve. Convert the read value into %. Note down the
converted value.
3. Dismount the previous positioner from the actuator.
4. Attach the lever arm of the previous positioner to the new positioner.
5. To prevent interference with the ongoing process, initialize the new positioner on an
actuator with a similar stroke or swivel range. Attach the new positioner to this actuator.
Initialize the new positioner.
6. Then dismount the new, initialized positioner from this actuator.
7. Mount the new, initialized positioner on the fixed actuator.
8. If the displayed actual position value differs from the noted value, correct the deviation by
moving the friction clutch.
9. Use the buttons on the positioner to enter the parameters which deviate from the factory
setting, such as type of actuator or tight closing.
10.Change to the measured value view using the mode button (manual button), see section
"Description of operating modes (Page 107)".
11.Release the fixing of the actuator.
See also
Sequence of automatic initialization (Page 117)
Automatic initialization of linear actuators (Page 124)
Automatic initialization of part-turn actuators (Page 133)
Manual initialization of linear actuators (Page 128)
Manual initialization of part-turn actuators (Page 135)