VARIO
The VARIO mode is based on the DUAL control mode. The difference to DUAL is that the
idling
time
is automatically lengthened or shortened to compensate for higher or lower machine starting
frequencies.
MODULATING control
The MODULATING control is an additional mechanical regulation. It continuously changes the flow
rate within the machine's control range.
A control valve, the proportional controller, changes the degree of opening of the inlet valve when
the machine transports compressed air into the air network (LOAD)
The load and power consumption of the drive motor rises and falls with the air demand.
4.5 Options
The options available for your machine are described below.
4.5.1 Option C3/C48
SIGMA CONTROL 2 controller: Connection to control technology
Connection to various control technology systems is possible with the C3 option.
Option C3 Option C48
Main Control System (MCS):
■ Slot for a communication mod‐
ule to connect to a control
technology system
Main Control System Input Output (MCSIO):
■ Without slot for a communication module to connect to a
control technology system
■ Digital and analogue inputs and outputs integrated
Input-Output-Module (IOM):
■ Module with digital and ana‐
logue inputs and outputs
Tab. 40 Components
4.5.2 Option H1
Machine mountings
These mountings allow the machine to be anchored firmly to the floor.
Fig. 8 Machine mountings
4 Design and Function
4.5 Options
901848 21 E
Operating Manual Rotary screw compressor
SK
33
Option C1
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