Analog Actuator Interface Modulating Service The Bray Controls Series 66 DeviceNet Analog Interface enables a Pneumatic Valve Positioner to operate in Modulating service when connected to a DeviceNet network. Commands from the network can direct the Positioner to move the Valve Actuator to any position between fully open and fully closed, inclusive. Actual valve position sensed by the Positioner can be transmitted to other devices over the network. Module status, including both network and diagnostic information, can be transmitted over DeviceNet and visually displayed through LED indicators. Both power and data wiring are supplied through a single DeviceNet cable connection. The Series 66 DeviceNet Analog Actuator Interface is microprocessor controlled, or smart, using firmware specifically designed to complement the capabilities of Bray Pneumatic Valve Positioners. It produces one 4-20 mA DC analog output (AO) to drive the Positioner, and reads one 4-20 mA DC analog input (AI) valve position signal from the retransmission feature. The Process Controller or PLC communicates with both analog I/O points through a single network address, or MAC ID. Both I/O points, as well as some diagnostic parameters, are continuously monitored and accessible through the DeviceNet connection. DeviceNet is an economical fieldbus network used to connect industrial devices such as sensors, actuators and motors while providing access to the intelligence present in these devices. DeviceNet allows up to 64 devices to communicate with each other over a single cable that supplies both communication and power. This simplifies field wiring, enhances functionality, and reduces total system cost. The Series 66 DeviceNet Analog Actuator Interface is easy to install and configure. Network wiring is done through a single DeviceNet standard five-pin connector, similar to plugging a mouse or keyboard into a personal computer. Configuration is done with Electronic Data Sheet (EDS) files without adjusting potentiometers or selector switches. All configuration settings are saved in non-volatile memory so they will survive power outages. An entire Actuated Valve Assembly (shown above) requires only a single DeviceNet connector and one air supply connection to operate. Bray Controls
Open the catalog to page 1Mounting The Series 66 DeviceNet Analog Actuator Interface has two 0.184” holes for remote mounting away from the actuated valve. When supplied as part of a Bray DeviceNet Actuated Valve Assembly, a mounting kit is used to attach the Interface to the top of the Pneumatic Actuator as shown in the cover picture. Weatherproof cables are used to connect the Interface to the Positioner. Series 66 DeviceNet Analog Actuator Interface Specifications Address Range Network Data Rate 125, 250, or 500 kbps (Software Settable) DeviceNet Messaging Polled and Explicit Message Connections Bus: Five Pin Mini-Style...
Open the catalog to page 2Series 66 DeviceNet Analog Actuator Interface Connection Diagram INPUT / OUTPUT: 3 (-) BLUE Series 66 I/O Connector: 1 = 4-20 mA Output (Command to Positioner) 2 = 4-20 mA Output (Return) 3 = 4-20 mA Input (Feedback from Positioner) 4 = 4-20 mA Input (Return) 4 ( ) BLACK 1 (+) BROWN 2 ( ) WHITE DeviceNet Five Pin Male Mini-Connector Bray Controls 13333 Westland East Blvd Houston, TX 77041 www.bray.com
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