Commissioning; Automatic Initialization - Siemens SIPART PS2 6DR50xx Manual

Preparing for Operation
3.6

Commissioning

.
72
Once the positioner has been fitted to a pneumatic actuator, it must be
provided with electrical and pneumatic auxiliary power.
Then you can then adapt the position controller to the respective actua-
tor by parameterizing and initializing it.
Mode" operating mode (which can also if necessary be attained by
"PRST") -- "NOINI" will flash.
If the positioner has not been initialized it will be in the "P Manual
Mode" operating mode (which can also if necessary be attained by
"PRST") -- "NOINI" will flash.
This initialization can be effected in three different ways:

Automatic initialization

S
Initialization takes place automatically. Hereby the positioner deter-
mines the direction of action, the stem travel and the angle of rota-
tion, the travel times of the actuator one after the other and adapts
the control parameters to the dynamic behavior of the actuator.
Manual initialization
S
The stem travel or angle of rotation of the actuator can be set
manually, the other parameters are determined as in automatic init-
ialization. This function is useful in actuators with soft limit stops.
Copying initialization data (positioner exchange)
S
In the devices with HART function the initialization data of a posi-
tioner can be read out and copied to another positioner. This en-
ables a defective device to be changed without having to interrupt
an ongoing process by initialization.
Only a few parameters need to be set in the positioner prior to initializa-
tion. The others are defaulted so that they do not normally need to be
adjusted. You will have no problems with commissioning if you observe
the following points.
The possible operating modes and parameters, together with the
adjustment capabilities and their effects are described in chapter 4,
page 89 "Operation".
NOTE
N.B.: The operating pressure should be at least one bar greater than is
necessary for closing/opening the valve during initialization. However,
the operating pressure may not be higher than the maximum permis-
sible operating pressure of the actuator.
N.B.: The transmission ratio selector can only be set when the
positioner is open. Therefore check this setting before closing the
housing.
SIPART PS2 Manual
A5E00074631--06