Product Overview - Hach SC4200c Profibus Instructions D'utilisation

2.1.4 Precautions for hazardous location installation
Explosion hazard. Only qualified personnel should conduct the installation tasks described in this
section of the manual. This equipment is suitable for use in Class 1, Division 2, Groups A, B, C & D
Hazardous Locations with specified sensors and options appropriately certified and rated for Class I,
Division 2, Group A, B, C & D , Zone 2, Group IIC Hazardous Locations.
Explosion hazard. Do not remove or replace modules while power is supplied to the controller unless
there are no ignitable gases in the area.
Explosion hazard. Do not connect or disconnect electrical components or circuits to the equipment
unless power has been removed or the area is known to be non-hazardous.
Explosion hazard. Connect only peripheral components that are clearly marked as certified for Class
1, Division 2 Hazardous Locations.
Never connect any sensor or digital or analog module to an SC Controller that is not clearly marked
as certified for Class 1, Division 2 Hazardous Locations.

2.2 Product overview

The sc controllers are the platform for all intelligent probes and analyzers. The sc platform is a fully
digital communication system based on the open Modbus standard.
When a Profibus network module is installed, the sc controllers can be configured to give the full
range of standardized method values and parameters.
The controller is compatible with master class 1 (PLC SCADA) and master class 2 systems, e.g.,
engineering stations.
An overview of the system is shown in
Figure 1 System overview
1 sc controller (Slave)
2 Programmable logic controller (Master class 1)
D A N G E R
D A N G E R
D A N G E R
D A N G E R
Figure 1.
3 PC with software (Master class 2 e.g., PC with
CP5611 card installed)
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