Preparing for Operation
38
SIP ART PS2 Manual
A5E00074631-01
- Mount the above mentioned plastic hose on the screw--type gland
and check the good fit.
- Fix the plastic hose with a cable strap to the fitting so that the
opening faces downwards.
- Make sure that the hose has no kinks and the exhaust air can flow
out unhindered.
3.3.2 Instructions for using positioners which are exposed to great
accelerations or vibrations
Great acceleration forces which may be far beyond the specified data
occur on fittings under great mechanical stress such as breaking flaps,
heavily shaking or vibrating valves as well as “steam impacts”. This
may lead to maladjustment of the slip clutch in extreme cases.
Please use the positioner with reinforced slip clutch for such
applications.
The increased torque requires a much greater force to actuate the slip
clutch.
Applications in which the measures described above are inadequate
are also conceivable. This applies for instance with continuous and
heavy vibration, increased or too low ambient temperatures and in the
case of nuclear radiation.
The separate attachment of position displacement sensor and
controller unit can help here. A universal component is available which
is suitable both for linear and rotary actuators.
You require the following:
- The position displacement sensor unit (order no. C73451-
A430-D78). This consists of a SIPAR T-PS2- housing with integrated
slip clutch, built--in potentiometer and various dummy plugs and
seals.
- The controller unit, any positioner version.
- The EMC filter plate, this is is a set together with cable clips and
M-20 screw--type cable gland and has the order number
C73451-A430-D23. The EMC filter plate must be installed in the
SIPART-PS2 positioner. The installation instructions enclosed with
the EMC filter plate explain how to assemble the components.
- A 3-wire cable for connecting the components.
This retrofit kit should always be used for the controller unit when any
actuator--mounted potentiometer (resistance 10 kohms) is to be used
instead of the position displacement sensor unit C73451-A430-D78.
External
displacement
measurement
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