Kval 990-HQ, Service Manual

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Network System Overview
2-4
990-HQ Service Manual
Network System Overview
A PLC controls the 990-HQ assembly line. The 990-HQ PLC can process multiple analog and
digital inputs, and output arrangements. The system can handle extended temperature ranges,
immunity to electrical noise, and resistance to vibration and impact.
Figure 2- 2 below, shows the PLC connections in the 990-HQ. The PLC is located in the Main
Electrical Panel. From the PLC, connections are made to coupler interfaces located near the sec-
tions they control. See your machine’s schematic package for detailed wiring information.
Tip: Lights should be blinking at these locations. If no light is observed there could be
a bad wire or component
The next sections has general information on locations of the nodes on the machine and general
information about the inputs and inputs. For detailed wiring information refer to machine’s elec-
trical drawings.
FIGURE 2- 2.
Network Connections Block Diagram