Kromschröder IC20

The actuators are designed for all applications
that require precise, controlled rotary
movement between 0° and 90°.
The combination of actuator and butterfly
valve is designed for flow adjustment and for
regulating flow rates. IC and butterfly valve
or IC 20 and linear flow control VFC can also
be delivered ready assembled.
The IC is controlled by a continuous signal or
three-point step signal.
In addition to setting the Min. and Max. positions
using infinitely adjustable switching
cams, floating limit switches mean that additional
switching positions such as for ignition
and high-fire rate positions can be set.
A standard Service switch allows the device
to be switched from Automatic to Manual
mode and a position indicator which can be
read from the outside drastically simplifies
the commissioning procedure.

An integrated feedback potentiometer offers
the option of monitoring the current position
of the actuator. This checking function can be
used in automation processes.

The behaviour of the actuator, e.g. if the input
signal falls below the minimum limit in the
event of cable discontinuity, can be set using
DIP switches.
Fluctuations or interference in the input signal
are suppressed by an adjustable potentiometer.
In the case of continuous control, the
input signal can be adapted to the minimum
and maximum adjustment angles manually
or automatically. This calibration process can
be visualised using LEDs. The continuous signal
offers the option of monitoring the current
position of the actuator.

The actuator IC 20 can be mounted directly
onto the butterfly valves BVG, BVGF, BVA,
BVAF, BVH or BVHS. The combination IB.. is
designed to adjust volumes of gas, cold and
hot air and flue gas on gas and air appliances
and flue gas lines. IB.. is designed
for control ratios up to 10:1 and is suitable
for regulating flow rates for modulatingcontrolled
combustion processes.

The combination of IC 20 and linear flow
control VFC is called IFC and is designed to
adjust volumes of gas and cold air on various
appliances. IFC is designed for control ratios
up to 25:1 and is suitable for regulating flow
rates for modulating-controlled combustion
processes.