The controller SIGMA CONTROL 2 can operate in the following control modes:
■ DUAL
■ QUADRO
■ VARIO
■ CONTINUOUS
■ DYNAMIC
■ MODULATING control
DUAL
In the DUAL control mode, the machine is switched back and forth between LOAD and IDLE to
maintain the machine working pressure between the preset minimum and maximum values. When
maximum pressure is reached, the machine switches to IDLE. When the preset
idling time
has
lapsed, the machine switches to READY.
The
idling time
is factory set according to the maximum starting frequency of the compressor mo‐
tor. The shorter the
idling time
setting, the sooner (and more frequently) the motor is stopped.
QUADRO
In contrast to the DUAL control mode, the machine will switch from LOAD to READY in
QUADRO mode after periods with low compressed air consumption.
After periods with a high compressed air consumption, the machine will switch from LOAD to
READY after passing through IDLE.
In this control mode, the controller requires two times to be specified: The
minimum run-time
and
the
off-time
.
The shorter these times are set, the sooner (and more frequently) the motor / engine is stopped.
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.
CONTINUOUS
In the CONTINUOUS control mode, the machine is switched back and forth between LOAD and
IDLE, in order to maintain the machine's working pressure between the preset minimum and maxi‐
mum values. When maximum pressure is reached, the machine switches to IDLE. However, the
machine does not switch to READY.
DYNAMIC
In contrast to the DUAL control mode, the machine will switch from LOAD to READY in DYNAMIC
mode at a low compressor motor temperature.
And from LOAD via IDLE to READY at a high compressor motor temperature.
The lower the drive motor / engine temperature, the sooner (and, therefore, more often and longer)
it is stopped.
5 Design and Function
5.7 Operating modes and control modes
48
User Manual Controller
SIGMA CONTROL 2 SCREW FLUID ≥5.1.2 No.: 9_9450 13 USE
Option C1
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