Interfaces
Interface Connection Marking
Ethernet 10/100 Base T RJ 45 socket X1
IO bus 9-pole SUB-D pins X2
RS485–FC (USS interface) 9-pole SUB-D socket X3
COM modules,
slot for communications module
Module optional for:
Profibus, Modbus,
Profinet, Devicenet
X4
SD card, SD card slot SD/SDHC card X5
The positions of the interfaces X1–X5 are marked on the rear of the controller.
Tab. 12 Interfaces
Identification with RFID Equipment Card
Feature Value
Hardware on the SIGMA CONTROL 2 controller RFID write/read device
Hardware (external) KAESER Equipment Card
Recognition distance [in] Max. 2
Frequency [MHz] 13.56
Tab. 13 RFID
2.1.2 Input/output modules
There are three different types of input/output modules with different amounts of inputs and out‐
puts.
The actually available number of input/output modules depends on the machine type and the avail‐
able options.
Refer to the machine's wiring diagram for the input/output modules installed in your equipment.
Every input/output module is equipped with:
■ Internal temperature monitoring
■ Internal undervoltage monitoring
■ LED indication of operational status
IOM 1
Input/Output Input/output module 1
Internal, into
the control
cabinet
available in
parallel on
both sides
External, into
the compres‐
sor interior
Digital input (DI), 24 VDC 4 10 2
Analog input current (AII), 0–20 mA – 1 2
Analog input resistor (AIR), PT100 – 1 3
Digital output relay (DOR), 250 VAC, 8 A 8 – –
Digital output transistor (DOT), 24 VDC, 0.5 A – 2 1
2 Technical Data
2.1 SIGMA CONTROL 2 Controller
9_9450 03USE
Service manual Controller
SIGMA CONTROL 2 SCREW FLUID 1.1.3
5
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