A new white paper highlights the use of the ROUTE-MASTER® Fieldbus System from MooreHawke – a division of Moore Industries-International, Inc. – in Intrinsically-Safe (I.S.) applications for Yokogawa Control Systems. The paper addresses FISCO or Entity devices located in Class I, Division 1 or Zone 0/1 locations. ROUTE-MASTER is a recommended option by Yokogawa to power I.S. fieldbus segments.
The ROUTE-MASTER system has a patented “split architecture” giving each segment the availability of two trunks at 350mA – the highest segment current to any I.S. FOUNDATION fieldbus or PROFIBUS PA system. This allows up to 16 fieldbus devices to be powered by each trunk. Special plug-to-plug connections designed for Yokogawa host systems allow for reduced wiring and easier commissioning. The ROUTE-MASTER device couplers have I.S. rated spur connections that allow technicians to perform live work in hazardous areas including Zone 0 IIC or Class I Div 1 Groups ABCD.
ROUTE-MASTER couplers also feature Automatic Segment Termination, which eliminates common problems such as over- and under-termination while ensuring that local parts of a segment remain functioning if remote parts are accidentally disconnected. Further protection is offered by a “Fold-Back” technique that provides automatic and fully auto-resetting spur short-circuit protection to prevent segment failure caused by single device faults.
The “Intrinsically-Safe Fieldbus Applications for Yokogawa Control Systems” white paper gives end users a clear understanding of the competitive advantages of the ROUTE-MASTER system and provides useful installation information and real-world examples of its use in I.S. applications.