Page 245 - Bürkert

Digital electropneumatic Process Controller for the integrated
mounting on process control valves

8693 • Compact stainless steel design
• Graphic display with backlight
• Easy start-up of process controller and
positioner
• Comprehensive range of additional
software functions
• Internal control air channel
• Profibus DPV1 or DeviceNet (option)

The compact Process Controller, Type 8693, is optimised for integrated Dimensions [mm] (see datasheet for more details)
mounting on the pneumatic actuators in the process valve series, Type
23XX/2103 and is specially designed for the requirements of a hygienic Ausführung Anschluss Multipol
process environment.

The actual value of the process factor is directly supplied to the device as
4-20 mA, PT100 or a frequency signal. The process controller calcu-
lates the setpoint for the subordinated positioner through the variance
comparison. Due to the analogue feedback all analogue values on the
controlling level can be transferred.
C
The parameterization of process controller and positioner can be carried
out automatically.
A
The easy handling and the selection of additional software functions are
done either on a big graphic display with backlight and keypad or over a
PC interface.
B
The Positioner registers the valve position without deterioration through
a contact-free, analog position sensor. The control of single- or double- A B C
acting actuators is done without internal air consumption. Communication 91 71.2 156
interfaces such as Profibus DPV1 or DeviceNet and analogue as well as
binary feedback can also be chosen.
Technical data (cont.)
Technical data Supply pressure Low air flow rate 0-7 bar
1)
High air flow rate 3-7 bar
Material Air input filter Exchangeable (mesh aperture ~0.1 mm)
Body PPS, stainless steel
Cover PC Actuator system Low air flow rate: Ø Actuator 70/90 mm
Sealing EPDM High air flow rate: Ø Actuator 130 mm
Power supply 24V DC +/-10% Position detection module Contact-free, wear-free
Residual ripple 10%, no technical direct current! Stroke range valve spindle 3-28 mm (3-45 mm on request)
Setpoint setting 0/4 to 20 mA and 0 to 5/10 V Installation as required, preferably with actuator in upright
position
Input resistance 0/4 to 20 mA: 180 Ω
0 to 5/10 V: 19 k Ω Type of protection IP65/67 acc. to EN 60529 (NEMA 4x in prepara-
tion)
Sensor input 4-20 mA (180 Ω input resistance)
frequency 0-1000 Hz (17 kΩ input resistance) Power consumption < 5 W
PT100 -20 to +220 °C (resolution < 0.1 °C) Electrical connection
Control medium neutral gases, air DIN ISO 8573-1 Multipole connection M12, 8-pin or 4-pin
Dust concentration Class 5 (<40 µm particle size) Cable gland 2xM16x1.5 (Cable Ø10 mm) on terminal screws
2
Particle density Class 5 (<10 mg/m ) 3 (1.5 mm )
Pressure condensation point Class 3 (<-20 °C) Bus communication Profibus DPV1, DeviceNet
Oil concentration Class 5 (<25 mg/m ) 3 Protection class 3 acc. to VDE 0580
Ambient temperature 0 °C to +55 °C Conformity CE acc. to EMV2004/108/EG
Control air ports Push-in connector (external Ø 6 mm or ¼”) or 1) The supply pressure has to be 0.5 - 1 bar above the minimum required pilot pressure for
threaded ports G 1/8”
the valve actuator.

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