Badger Meter SRD/SRI Valve Positioners - Manual (Page 9)

FOUNDATION FIELDBUS SUMMARY
Mounting to the Actuator (Valve)
The SRD960 can be mounted to stroke or rotary actuators
Connection and Startup
Connect the pneumatic tubing Upon connection of supply air and a voltage source of, for example, 12V DC to the input
terminals (polarity is random), an initial startup can be carried out without any further equipment
Use the local push-buttons to change basic parameters such as type of actuator, side of installation, valve opens/closes with
increasing setpoint value, and characteristics curve of the valve (values set ex-factory: stroke actuator, mounting side: left,
valve opens with increasing setpoint value, linear characteristics curve)
Thereafter, an AUTOSTART can be performed during which the SRD960 determines independently the geometric data of the
actuator as well as control parameter, to ensure an optimized operation with the attached valve
Bus Connection
The SRD 960 FOUNDATION Fieldbus version is bus-compatible, which means that to a 2-core lead the instruments have to be
attached parallel according to IEC 1158-2 The lead serves as voltage feeder as well as for digital communication
A FOUNDATION Fieldbus can consists of one or several segments, each with an individual length of up to 1900 m An Ex-
barrier should not be further than 100 meters from a bus terminal Up to 32 instruments can be attached to a segment A
maximum of up to 240 instruments can be addressed (including repeater = connector of segments)
To activate each instrument individually, enter an individual address Ex-factory always stores the address 29h (41) This
address can be changed automatically with the NI-Configurator
System Integration
You can use the NI-Configurator to change the configuration of the SRD960 The required files (* FFO, * SYM, * CFF) can be
downloaded from our website
More informations about FOUNDATION Fieldbus see www.fieldbus.org
Figure 3: FOUNDATION fieldbus
Page 9
Foundation Fieldbus Summary
August 2014 POS-UM-00009-EN-02