6
English
Operating Instructions
bar-positurn2 and bar-positrol
Safety instructions and warnings:
Operator of positurn/positrol:
Authorized persons are instructed how to
operate bar-positurn and bar-positrol after
they read and understood this instruction
completely.
Operator for installation and service:
Authorized persons are instructed in all
points of the positioner after they read and
understood this instruction completely.
In its standard form, the bar-positurn2 /
positrol is designed and manufactured for
actuators with a closing direction for valves
in a clockwise manner (cw). The actuator
undertakes the basic position with a clo-
sed valve. In the case of corresponding
units, the basic position corresponds to so-
called safety effect „current-free closed“.
In the initialisation process, the positioner
adjusts to the defined actuator pivoting
range. The analog activation is triggered
from the control point and effects the pro-
portional allocation of the defined pivoting
angle to the set value (input) signal.
In a similar manner, the defined pivoting
angle is allocated an analog positioning
signal. Binary signals are formed additio-
nally at the start and end of the pivoting
range. Electrical connection is made at ter-
minal blocks inside the unit.
Pneumatic connection is made directly at
the external solenoid valves for positurn.
The pneumatic connection of the positrol
is made at the housing.
The bar-positurn2 is mounted
• with a bracket onto actuators with inter-
face acc. to VDI/VDE 3845
• or directly onto actuators type actubar.
Solenoid valves are fitted to standard inter-
faces with type-related material.
The bar-positrol is mounted
•
directly onto actuators with interface
acc. to VDI/VDE 3845 with a maximum
shaft diameter up to 70 mm and a shaft
heigth of 30 mm.
Functional Description:
Overview of versions
Product
Version
Actuator type
In case of power failuer
bar-positurn
PN2-D
double acting
fail to stay
bar-positrol
PL-D
double acting
fail to stay
bar-positurn
PN2-S
double acting
fail to close / open
bar-positrol
PL-S
double acting
fail to close / open
bar-positurn
PN2-E
single acting
fail to close / open (depending of springs)
bar-positrol
PL-E
single acting
fail to close / open (depending of springs)
