Field device coupler for a variety of fieldbus applications
The couplers for operation using the FOUNDATION™ Fieldbus H1 or PROFIBUS PA come in four-, eight- or 12-channel versions for intrinsically safe or non-intrinsically safe fieldbus devices and for installation in Zone 1 or 2. All couplers feature an innovative power management function.
All device couplers use the efficient High Power Trunk concept and are optimised for a variety of applications.
R. STAHL’s Ex i field device couplers are available with four or eight channels in two versions: A Zone 1 version, or alternatively, a cost-optimised Zone 2 version. All Ex i couplers are galvanically separated and can be operated with Zone 1 fieldbus devices using the FISCO or Entity concept.
Zone 1 Ex e couplers are suitable for four or eight non-intrinsically safe fieldbus devices. Zone 2 Ex n couplers are available with four, eight or 12 channels for ic and non-intrinsically safe fieldbus devices.
The power management function of all field device couplers keeps the current load on the trunk as low as possible at all times. Start-up currents and short-circuit currents are kept to a minimum.