Method Description Section
Setpoint pressure pre-selection pA/pB remote contact:
An input contact provides the signal to switch
from the system setpoint pressure pA to pB.
7.9.7
Master control of compressors regulated
by pressure switch
There are two possibilities of linking to a
machine regulated by pressure switch:
On machines with the same FAD,
SIGMA CONTROL 2 controls the pressure
switch via a floating relay output.
7.9.8.1
On machines supplying an unequal FAD, the
pressure ranges are matched to each other.
7.9.8.2
Tab. 61 Master control – overview
Further information Examples of clock programs for equal machine loading are given in section 7.9.9.
7.9.2 Configuring Profibus mode (SIGMA AIR MANAGER or VESIS)
Overview
■ Profibus DP-V0 Retrofit Kit required
■ Establishing the electrical connection
■ Set the remote operating mode pB.
■ Configure the Profibus interface
■ Activate the «Remote control» key
Precondition Profibus DP-V0 Retrofit Kit required
Making the electrical connections
Pin Connections
1 Spare
2 Spare
3 Profibus connection B
4 TTL signal RTS
5 Ground
6 +5 V for bus terminal
7 Spare
8 Profibus connection A
9 Spare
Tab. 62 Profibus DP pin connection
7 Initial Start-up
7.9 Configuring the machine for master control
88
Service manual Controller
SIGMA CONTROL 2 SCREW FLUID 1.1.3 9_9450 03USE
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