KAESER ESD 442 SFC, Technical Documentation Manual

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4 Design and Function
4.1 The controller
SIGMA CONTROL 2 controls, regulates, monitors, and protects the machine.
All parameters needed to operate KAESER rotary screw compressors can be set and displayed
using the controller. Various user-dependent password mechanisms protect the parameters.
Components
SIGMA CONTROL 2 has the following components:
■ Main Control System (MCS):
─ Industrial PC
─ Software for the control, regulation, and monitoring of the machine, for the display and mod‐
ification of settings and for communication.
─ User interface with backlit display, touch keys, LEDs, and interfaces.
─ Radio Frequency Identification (RFID):
Identification with the KAESER RFID Equipment Card
─ Slot for customer interface; optional communications module
─ SD card slot for SD/SDHC cards:
Manual loading of updates with an SC card, reading or recording process data
■ Input-Output-Module (IOM):
Modules with digital and analog inputs and outputs with their own power supply.
Fig. 3 System structure
1
Machine enclosure
2
Control cabinet
3
SIGMA CONTROL 2
4
Input/output module
5
IO bus
6
Inputs/outputs in the interior of the control
cabinet
7
Inputs/outputs in the interior of the com‐
pressor
8
Inputs/outputs for external sensors
9
Compressor
Function
The control and regulating function allows:
■ Automatic changeover of the machine from LOAD to IDLE or READY.
4 Design and Function
4.1 The controller
10
Service manual Controller
SIGMA CONTROL 2 SCREW FLUID 1.1.3
9_9450 03USE