General Description; Type 6520 Namur Valve With 24 V Connection; Type 6520 Namur Valve With Profibus-Pa Connection; Profibus-Pa - Burkert 6520 NAMUR Instructions De Service

2

GENERAL DESCRIPTION

Type 6520 NAMUR valve for the control of process valves with electrical
connections, available with either a 24 V connection or with a PROFIBUS-PA
connection to DIN 19245 T 4.
2.1

Type 6520 NAMUR Valve with 24 V connection

• Pilot-driven pneumatic valve with a piezo valve as the pilot control
• Very low switching and standby current
2.2

Type 6520 NAMUR Valve with PROFIBUS-PA connection

• Controlled with the PROFIBUS-PA
• De-central device for efficient collaboration with a central automation
equipment (e.g., process control system)
• High process security due to bi-directional transmission of signal
- Switching commands from the process control system to the valve
- Sensor signals for registration of the valve setting of the process valve
2.3

PROFIBUS-PA

The PROFIBUS-PA connects the automation system and the process control
system with the de-central field devices. It uses the extended PROFIBUS-DP
protocol together with transmission techniques according to IEC 1158-2. PROFI-
BUS-PA meets the special requirements of process technology, e.g., for the
chemical and petro-chemical sectors:
• Uniform application profile for process automation and full inter-operability
between different PROFIBUS-PA devices
• Linking of the process automation with PROFIBUS-PA to the general
automation via PROFIBUS-DP using the transmission technique according
to EIA RS485 or optical waveguides
20 Type 6520