Burkert 8693 User Manual

Type 8692, 8693

Positioner TopControl

Process Controller TopControl

Electropneumatic positioner

Electropneumatic process controller

Operating Instructions

Bedienungsanleitung Manuel d‘ utilisation

We reserve the right to make technical changes without notice. Technische Änderungen vorbehalten.

Sous réserve de modifications techniques.

© 2008-2011 Bürkert Werke GmbH

Operating Instructions 1111/01_EU-ML_00806169 / Original DE

Type 8692, 8693

Table of contents

	Positioner Type 8692, 8693
Table of Contents
General information and safety instructions.....................................................................................................		7
1.	Operating instructions.........................................................................................................................................................	8
2.	Authorized use.........................................................................................................................................................................	9
3.	Basic safety instructions.................................................................................................................................................	10
4.	General Information...........................................................................................................................................................	11
Description of system....................................................................................................................................................................		13
5.	Function of the positioner and combination with valve types....................................................................	14
6.	Structure of the positioner.............................................................................................................................................	17
7.	Type 8692 positioner with position controller......................................................................................................	20
8.	Type 8693 positioner with process controller......................................................................................................	24
9.	Interfaces of the positioner for the multipole model.......................................................................................	28
10.	Interfaces of the positioner for the models with cable gland.....................................................................	29
11.	Technical Data.......................................................................................................................................................................	30
Control and display elements, operating modes...........................................................................................		35
12.	Control and display elements.......................................................................................................................................	36
13.	Operating modes.................................................................................................................................................................	39
14.	Operating Levels..................................................................................................................................................................	43
Installation................................................................................................................................................................................................		45
15.	Installation...............................................................................................................................................................................	47
16.	Fluid connection...................................................................................................................................................................	57
17.	Electrical Connection 24 V DC with circular plug-in connector (multi-pole model).......................	59
18.	Electrical Connection 24 V DC with Cable Gland..............................................................................................	67
19.	Initial start-up........................................................................................................................................................................	72

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Start-up and operation of the position controller Type 8692.........................................................		77
20.	Starting up and installing the position controller Type 8692 .......................................................................	79
21.	Operation of the position controller ..........................................................................................................................	87
22.	Configuring the auxiliary functions ............................................................................................................................	92
Start-up and operation of the position controller Type 8693......................................................		125
23.	Starting up and setting up the process controller Type 8693 ..................................................................	127
24.	Operation of the process controller .......................................................................................................................	149
25.	Auxiliary functions for the process controller ...................................................................................................	154
PROFIBUS-DP.............................................................................................................................................................................................		173
26.	General Information ........................................................................................................................................................	174
27.	Technical Data ....................................................................................................................................................................	174
28.	Safety Settings if the Bus Fails . ...............................................................................................................................	175
29.	Interfaces ..............................................................................................................................................................................	175
30.	Electrical connections ....................................................................................................................................................	176
31.	Settings on the positioner . ..........................................................................................................................................	179
32.	Functional Deviations from the Standard Model .............................................................................................	184
33.	Configuration in the Profibus - DP Master . ...........................................................................................................	184
34.	Bus Status Display . .........................................................................................................................................................	187
35.	Configuration with Siemens Step7 .........................................................................................................................	188
DeviceNet	....................................................................................................................................................................................................	191
36. ........................................................................................................................................................	General Information	193
37. ..........................................................................................................................................................	Definition of Terms	193
38. ....................................................................................................................................................................	Technical Data	194
39. ................................................................................................................................	Safety Settings if the Bus Fails	195
40. ..............................................................................................................................................................................	Interfaces	195
41. ....................................................................................................................................................	Electrical connections	196
42. ....................................................................................................	Settings on the positioner in the Main Menu	200
43. .............................................................................................	Functional Deviations from the Standard Model	203
44. .........................................................................................................................	Configuration of the Process Data	204

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45.	Bus Status Display..........................................................................................................................................................	207
46.	Configuration Example 1..............................................................................................................................................	208
47.	Configuration Example 2..............................................................................................................................................	211
Maintenance and troubleshooting..............................................................................................................................		213
48.	Maintenance........................................................................................................................................................................	214
49.	Error messages and malfunctions Type 8692..................................................................................................	216
50.	Error messages and malfunctions Type 8693..................................................................................................	218
Disassembly............................................................................................................................................................................................		223
51.	Disassembly........................................................................................................................................................................	224
Packaging, storage and disposal..................................................................................................................................		227
52.	Packaging and transport..............................................................................................................................................	228
53.	Storage..................................................................................................................................................................................	228
54.	Disposal.................................................................................................................................................................................	228
Accessories............................................................................................................................................................................................		229
55.	Accessories.........................................................................................................................................................................	230
General Rules (Appendix).........................................................................................................................................................		231
56.	Selection criteria for continuous valves...............................................................................................................	232
57.	Properties of PID controllers......................................................................................................................................	234
58.	Adjustment rules for PID controllers.....................................................................................................................	240
Operating structure of the positioner (Appendix)....................................................................................		245
59.	Operating Structure........................................................................................................................................................	246
Tables for customer-specific settings (appendix).....................................................................................		253
60.	Settings of the freely programmable characteristic Type 8692 and Type 8693.............................	254
61.	Set parameters of the process controller Type 8693...................................................................................	255
Mastercode (Appendix)..............................................................................................................................................................		257
62.	Mastercode..........................................................................................................................................................................	258

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Table of contents

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General information and safety instructions

Table of Contents

1.	OperaTIng instructions........................................................................................................................................................		8
	1.1.	Symbols.......................................................................................................................................................................................	8
2.	Authorized use..............................................................................................................................................................................		9
	2.1.	restrictions................................................................................................................................................................................	9
3.	Basic safety instructions...............................................................................................................................................		10
4.	General InformaTIOn.............................................................................................................................................................		11
	4.1.	Contact address...................................................................................................................................................................	11
	4.2.	Warranty....................................................................................................................................................................................	11
	4.3.	Master code............................................................................................................................................................................	11
	4.4.	Information on the internet............................................................................................................................................	11

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General Information

Safety Instructions

1.Operating instructions

The operating instructions describe the entire life cycle of the device. Keep these instructions in a location which is easily accessible to every user and make these instructions available to every new owner of the device.

Warning!

The operating instructions contain important safety information!

Failure to observe these instructions may result in hazardous situations.

• The operating instructions must be read and understood.

1.1.Symbols

Danger!

Warns of an immediate danger!

• Failure to observe the warning may result in a fatal or serious injury.

Warning!

Warns of a potentially dangerous situation!

• Failure to observe the warning may result in serious injuries or death.

Caution!

Warns of a possible danger!

• Failure to observe this warning may result in a moderately severe or minor injury.

Note!

Warns of damage to property!

• Failure to observe the warning may result in damage to the device or the equipment.

Indicates important additional information, tips and recommendations.

refers to information in these operating instructions or in other documentation.

→→designates a procedure which you must carry out.

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General Information

Safety Instructions

2.Authorized use

Incorrect use of the positioner Type 8692 and Type 8693 may be a hazard to people, nearby equipment and the environment.

The device is designed to be mounted on pneumatic actuators of process valves for the control of media.

•Do not expose the device to direct sunlight.

•Use according to the permitted data, operating conditions and conditions of use specified in the contract documents and operating instructions, as described in chapter “Description of system” - “11. Technical data“ in this manual and in the valve manual for the respective pneumatically actuated valve.

•The device may be used only in conjunction with third-party devices and components recommended and authorised by Bürkert.

•In view of the large number of options for use, it is essential prior to installation to study and, if necessary, to test whether the positioner is suitable for the specific application case.

•Correct transportation, correct storage and installation and careful use and maintenance are essential for reliable and problem-free operation.

•Use the positioner Type 8692 and Type 8693 only as intended.

2.1.Restrictions

If exporting the system/device, observe any existing restrictions.

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General Information

Safety Instructions

3.Basic safety instructions

These safety instructions do not make allowance for any

•contingencies and events which may arise during the installation, operation and maintenance of the devices.

•local safety regulations; the operator is responsible for observing these regulations, also with reference to the installation personnel.

Danger!

Danger – high pressure!

• Before loosening the lines and valves, turn off the pressure and vent the lines.

Risk of electric shock!

• Before reaching into the device or the equipment, switch off the power supply and secure to prevent reactivation!

• Observe applicable accident prevention and safety regulations for electrical equipment!

General hazardous situations.

To prevent injury, ensure that:

• the system cannot be activated unintentionally.

• Installation and repair work may be carried out by authorised technicians only and with the appropriate tools.

• After an interruption in the power supply or pneumatic supply, ensure that the process is restarted in a defined or controlled manner.

• The device may be operated only when in perfect condition and in consideration of the operating instructions.

• The general rules of technology apply to application planning and operation of the device.

• Do not put any loads on the body (e.g. by placing objects on it or standing on it).

• Do not make any external modifications to the device bodies. Do not paint the body parts or screws.

Note!

Electrostatic sensitive components / modules!

• The device contains electronic components which react sensitively to electrostatic discharge (ESD). Contact with electrostatically charged persons or objects is hazardous to these components. In the worst case scenario, they will be destroyed immediately or will fail after start-up.

•Observe the requirements in accordance with EN 100 015 - 1 and 5 - 2 to minimise or avoid the possibility of damage caused by sudden electrostatic discharge!

•Also ensure that you do not touch electronic components when the power supply voltage is present!

The positioners Type 8692 and Type 8693 were developed with due consideration given to the accepted safety rules and is state-of-the-art. However, dangers can still arise.

Failure to observe this operating manual and its operating instructions as well as unauthorized tampering with the device release us from any liability and also invalidate the warranty covering the devices and accessories!

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General Information

Safety Instructions

4.General Information

4.1.Contact address

Germany

Bürkert Fluid Control System

Sales Center

Chr.-Bürkert-Str. 13-17

D-74653 Ingelfingen

Tel. + 49 (0) 7940 - 10 91 111

Fax + 49 (0) 7940 - 10 91 448

E-mail: [e-mail]

International

Contact addresses can be found on the final pages of the printed operating instructions.

And also on the Internet at:

www.burkert.com

4.2.Warranty

The warranty is only valid if the positioner Type 8692 and Type 8693 is used as intended in accordance with the specified application conditions.

4.3.Master code

Operation of the device can be locked via a freely selectable user code. In addition, there is a non-changeable master code with which you can perform all operator control actions on the device. This 4-digit master code can be found in the Appendix of these operating instructions in the chapter entitled “Master code”.

If required, cut out the code and keep it separate from these operating instructions.

4.4.Information on the internet

The operating instructions and data sheets for Type 8694 can be found on the Internet at:

www.burkert.com

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General Information

Safety Instructions

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Description of system

Table of Contens

5.	Function of the positioner and combinaTIOn with valVE.Types.................................................		14
	5.1. Models of the positioner.................................................................................................................................................		15
	5.2. Features of the valve types............................................................................................................................................		16
6.	Structure of the positioner........................................................................................................................................		17
	6.1.	representation......................................................................................................................................................................	17
	6.2.	Features....................................................................................................................................................................................	18
	6.3. Function diagram of the positioner with single-acting actuator................................................................		19
7.	Type 8692 Positioner with position controller.........................................................................................		20
	7.1.	Schematic representation of the positioner Type 8692.................................................................................	21
	7.2.	Properties of the position controller software.....................................................................................................	22
8.	Type 8693 positioner with process controller.........................................................................................		24
	8.1.	Schematic representation of the process control.............................................................................................	25
	8.2.	Functions of the process controller software......................................................................................................	26
9.	InterfACES.OF.The positioner for the mulTIPOLE.MODEL.....................................................................		28
10.	InterfACES.OF.The positioner for the models with cable gland..............................................		29
11.	Technical DaTA.............................................................................................................................................................................		30
	11.1. Safety positions after failure of the electrical or pneumatic auxiliary power.....................................		30
	11.2. Factory settings of the positioner..............................................................................................................................		31
	11.3. Specifications of the positioner..................................................................................................................................		32
		11.3.1. Conformity.................................................................................................................................................	32
		11.3.2. Standards..................................................................................................................................................	32
		11.3.3. Operating conditions..............................................................................................................................	32
		11.3.4. Mechanical data.......................................................................................................................................	32
		11.3.5. Electrical data...........................................................................................................................................	32
		11.3.6. Pneumatic Data........................................................................................................................................	33
		11.3.7. Type label...................................................................................................................................................	34

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Description of system

5.Function of the positioner and combination with valve types

Positioners Type 8692 and Type 8693 are electropneumatic positioner for pneumatically actuated control valves with single-acting or double-acting actuators.

Together with the pneumatic actuator the positioner forms an optical and functional unit.

The control valve systems can be used for a wide range of control tasks in fluid technology and, depending on the application conditions, different process valves belonging to series 2300 or 2103 from the Bürkert range can be combined with the positioner. Angle-seat valves, diaphragm valves or ball valves fitted with a control cone are suitable.

“Figure 1” shows an overview of the possible combinations of positioner and different pneumatically actuated valves. Different actuator sizes and valve nominal widths, not illustrated here, are available for each type. More precise specifications can be found on the respective data sheets. The product range is being continuously expanded.

Positioner

Type 8692

Type 8693

with diaphragm valve Type 2103

with slanted seat valve Type 2300

Figure 1: Overview of possible combinations

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Description of system,

5.1.Models of the positioner

The positioner is available in 2 versions:

Type 8692 - Positioner with positioning control

The position of the actuator (stroke) is regulated according to the position set-point value. The position set-point value is specified by an external uniform signal (or via field bus).

Type 8693 - Positioner with process control

The positioner is linked to a control circuit. The position set-point value of the valve is calculated from the process set-point value and the actual process value via the control parameters (PID controller). The process set-point value can be set by an external signal.

Pneumatically actuated piston actuators and rotary actuators can be used as a actuator. Both single-acting and double-acting actuators are offered in combination with the positioner.

For single-acting actuators, only one chamber is aerated and deaerated during actuation. The generated pressure works against a spring. The piston moves until there is an equilibrium of forces between compressive force and spring force.

For double-acting actuators the chambers on both sides of the piston are pressurised. In this case, one chamber is aerated when the other one is deaerated and vice versa. In this design, no spring is installed in the actuator.

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Description of system

5.2.Features of the valve types

	Slanted seat control		Diaphragm valves		Ball valves		Flap valves
	valves / screw-down
	stop globe control
	valves
Types	• 2702		• 2730		• 2652		• 2672
	• 2712		• 2103		• 2655		• 2675
	• 2300		• 2731		• 2658
	• 2301
Features	•	incoming flow under	•	medium is hermeti-	•	scrapable	•	unaffected by
		seat		cally separated from	• minimum dead			contamination
				the actuator and
	•	closes smoothly				space	•	little pressure loss
				environment
								compared to other
	•	straight flow path of			•	unaffected by
			•	cavity-free and self-				valve types
		the medium				contamination
				draining body design
							•	inexpensive
	•	self-adjusting			•	little pressure loss
			•	any flow direction
		stuffing box for high				compared to other	•	low construction
				with low-turbulence
		leak-tightness				valve types		volume
				flow
			•	steam-sterilizable	•	seat and seal can
						be exchanged in the
			•	CIP-compliant		three-piece ball valve
			•	closes smoothly		when installed
			•	actuator and dia-	Information
				phragm can be	Can be used as
				removed when the	process controller only
				body is installed
Typical	•	water, steam and	•	neutral gases and	•	neutral gases and	•	neutral gases and
media		gases		liquids		liquids		liquids
	•	alcohols, oils, pro-	•	contaminated,	•	clean water	•	slightly aggressive
		pellants, hydraulic		abrasive and	•	slightly aggressive		media
		fluids		aggressive media
						media
	•	salt solutions, lyes	•	media of higher
		(organic)		viscosity
	•	solvents
Table 1:	Features of the valve types

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Description of system,

6.Structure of the positioner

The positioners Type 8692 and Type 8693 consist of the micro-processor controlled electronics, the position measuring system and the control system.

The appliance is designed using three-wire technology. Operation of the positioner is controlled by four keys and a 128x64 dot matrix graphic display.

The pneumatic control system for single or double-acting actuators consists of two or four solenoid valves.

6.1.Representation

Transparent cap

Body casing

Pressure limiting valve (for protection against too high internal pressure in

case of error)

Electrical connection module	Exhaust air connection	Pilot air port
(here with circular plug-in connectors)	(label: 3)	(label: 1)

Control module with

display and keys

(View without transparent cap)

Additional

Exhaust air connection (connection: 3.1)

only with Type 23xx and 2103

with pilot-operated control system for high air output (actuator size ø 125 / 130)

Figure 2:

Structure

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Description of system

6.2.Features

•Models.

for single-acting or double-acting valve actuators.

•Position measuring system.

Non-contact and therefore non-wearing position measuring system.

•Microprocessor-controlled electronics. for signal processing, control and valve control.

•Control module.

Operation of the device is controlled by four keys. The 128x64 dot matrix graphics display enables you to display the set-point or actual value and to configure and parameterize via menu functions.

•Control system.

The control system consists of 2 solenoid valves for single-acting actuators or four solenoid valves for doubleacting actuators. In single-acting actuators, one valve serves for the aeration and another for the deaeration

of the pneumatic piston actuator. Double-acting actuators feature 2 valves for aeration and deaeration. The solenoid valves operate according to the rocker principle and are controlled with a PWM voltage via the controller. Doing so achieves a higher flexibility with regard to actuator volume and final control speed. The directaction model has an orifice of DN 0.6. On larger pneumatic actuators the solenoid valves feature diaphragm reinforcers to increase the maximum flow and therefore improve the dynamics (DN 2.5).

• Position feedback (optional).

One inductive proximity switch.

When the valve reaches an upper or a lower position, this can be relayed e.g. to a PLC via binary outputs. By means of set-screws, the operator can change the inductive proximity switch or limit positions.

• Pneumatic interfaces

1/4” connections with different thread forms (G, NPT)

Hose plug-in connection

• Electrical interfaces

Circular plug-in connector or cable gland

•Body.

The body of the positioner is protected from excessively high internal pressure, e.g. caused by leaks, by a

18 pressure limiting valve.

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Type 8692, 8693

Description of system,

6.3.Function diagram of the positioner with singleacting actuator

The black lines describe the function of the position controller (Type 8692). The process controller (Type 8693) includes the position controller and the functions which are illustrated in grey.

Process actual value

Process set-point

value

Process

Nominal position

controller

External position

set-point value

Position

Actual

controller

Positioner

position

Control system

Position

1

measuring

2

system

Pneumatic actuator (single-acting)

Valve

Control system

1:Aeriation valve

2:Bleed valve

Compressedair supply

Exhaust air

Sensor

Process actual value (flow, pressure, level, temperature, et cetera.)

Figure 3: Function diagram

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Description of system

7.Type 8692

Positioner with position controller

The position measuring system records the current position (POS) of the pneumatic actuator. The position controller compares this actual position value with the set-point value (CMD), which is definable as norm signal. In case of a control deviation (Xd1), a pulse-width modulated voltage signal is sent to the control system as a manipulated variable. If there is a positive control difference in single-acting actuators, the air inlet valve is controlled via output B1. If the control difference is negative, the bleed valve is controlled via output E1. In this way the position of the actuator is changed until control difference is 0. Z1 represents a disturbance variable.

				Z1
		B1	PK
CMD		Xd1		Valve opening
+	-	E1
Position set-		Positioner	Control system	Continuous
point value			solenoid valves	valve
		POS
	Position control circuit		Position measuring

Figure 4: Signal flow plan of position controller

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Description of system,

7.1.Schematic representation of the positioner Type 8692

INPUT

TEMP

CMD

POS

		X.CONTROL	DBND
POS			CMD
		X.LIMIT	X.TIME
		DIR.ACT	CUTOFF
			CHARACT
			SPLTRNG
... 20 mA	... 20 mA	... 10 V ... 5 V	DIR.CMD
4	0	0 0 INP

Figure 5:

Schematic representation of position control

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Description of system

7.2.Properties of the position controller software

Additional function		Action
Position controller with additional function
Sealing function		Valve closes tight outside the control range. Specifi-
CUTOFF		cation of the value (in %), from which the actuator is
		completely deaerated (when 0%) or aerated (when
		100%).
Stroke limit		Mechanical valve piston movement only within a
X.LIMIT		defined stroke range
Signal range splitting		Splitting of the standard signal range to two or more
SPLTRNG		positioners
Correction line to adjust the operating characteristic		The operating characteristic can be linearized
CHARACT
Insensitivity range		The position controller is initially actuated from a
X.CONTROL		control difference to be defined
Effective direction of the controller nominal value		Reversal of the effective direction of the nominal value
DIR.CMD
Safety position		Definition of the safety position
SAFEPOS
Limit of the control speed		Input of the opening and closing time for the entire
X.TIME		stroke
Effective direction of the actuator		Adjustment of the effective direction between aeration
DIR.ACT		state of the actuator and the actual position
Signal level error detection		Check the input signals for sensor break.
SIG.ERROR		Warning output on the display and start up of the
		safety position (if selected)
Binary input		Switch over AUTOMATIC-MANUAL or
BINARY. IN		Start up of the safety position
Analogue feedback (option)		Status signal set-point or actual value
OUTPUT
2 binary outputs (option)		Output of two selectable binary values.
OUTPUT
User calibration		Change to the factory calibration of the signal input
CAL.USER
Table 2:	Functions position controller

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Description of system,

Hierarchical control concept for easy control on the following levels
Process control		On this level switch between AUTOMATIC and
		MANUAL mode.
Configuration and parameterisation		On this level specify certain basic functions during
		start-up and, if required, configure additional functions
Table 3:	Position controller - hierarchical control concept

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Description of system

8.Type 8693

positioner with process controller

If the positioner is operated with process controller Type 8693, the aforementioned position control becomes the subordinate auxiliary control circuit; this results in a cascade control. The process controller in the main control circuit of the positioner has a PID function. The process set-point value (SP) is specified as set-point value and compared with the actual value (PV) of the process variable to be controlled. The position measuring system records the current position (POS) of the pneumatic actuator. The position controller compares this actual position value with the set-point value (CMD), which is determined by the process controller. In case of a control deviation (Xd1), a pulse-width modulated voltage signal is sent to the control system as a manipulated variable. If there is a positive control difference in single-acting actuators, the air inlet valve is controlled via output B1. If the control difference is negative, the bleed valve is controlled via output E1. In this way the position of the actuator is changed until control difference is 0. Z2 represents a disturbance variable.

							Z1
		CMD	Xd1		B1	PK	Valve
					E1
		+	-				opening
			Position		Control system		Continuous
			controller		solenoid valves		valve
					POS
						Position measuring
			Position control circuit
						Z2
	SP	Xd2	CMD	Position		Valve	Process variable
						opening
	+	-		control
				circuit
						Process
	Process set-point	Process controller
	value
			PV
				Transmitter

Figure 6: Signal flow plan of process controller

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8.1.Schematic representation of the process control

TEMP

SP

PV

CMD

POS

		X.CONTROL	DBDx				Q	...204 mA ...200 mA ...100 V ...50 V
POS	X.LIMIT	+	CMD	X.TIME	FILTER
	-
	DIR.ACT			CHARACT CUTOFF	PV SCALE PV PV	-	+	SP SP SCALE SP
				DIR.CMD				P.CONTROL PARAMETER SETUP

Figure 7: Schematic representation of process control

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Description of system

8.2.Functions of the process controller software

Additional function		Action
Position controller with additional function
Sealing function		Valve closes tight outside the control range. Specification
CUTOFF		of the value (in %), from which the actuator is completely
		deaerated (when 0%) or aerated (when 100%).
Stroke limit		Mechanical valve piston movement only within a defined
X.LIMIT		stroke range
Correction line to adjust the operating		The operating characteristic can be linearized
characteristic
CHARACT
Insensitivity range		The position controller is initially actuated from a control
X.CONTROL		difference to be defined
Effective direction of the controller nominal value		Reversal of the effective direction of the nominal value
DIR.CMD
Safety position		Definition of the safety position
SAFEPOS
Limit of the control speed		Input of the opening and closing time for the entire stroke
X.TIME
Effective direction of the actuator		Adjustment of the effective direction between aeration
DIR.ACT		state of the actuator and the actual position
Signal level error detection		Check the input signals for sensor break.
SIG.ERROR		Warning output on the display and start up of the safety
		position (if selected)
Binary input		Switch over AUTOMATIC-MANUAL or
BINARY. IN		Start up of the safety position
Analogue feedback (option)		Status signal set-point or actual value
OUTPUT
2 binary outputs (option)		Output of two selectable binary values.
OUTPUT
User calibration		Change to the factory calibration of the signal input
CAL.USER
Table 4:	Functions position controller

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Description of system,

	Additional function		Action
	Process controller with additional function
	Controller structure		PID
	P.CONTROL
	Adjustable parameters		Proportional coefficient, reset time, hold-back time and
	P.CONTROL - PARAMETER		operating point
	Scalable inputs		Position of the decimal points, lower and upper scale
	P.CONTROL - SETUP		values of the actual process value and the process set-
			point value
	Selection of the nominal value specification		Set-point value specification either via standard signal
	P.CONTROL - SETUP - SP INPUT		input or via keys
	Process characteristic linearization		Function for automatic linearization of the process
	P.Q‘LIN		characteristics
	Process controller optimization		Function for automatic optimization of the process con-
	P.TUNE		troller parameters
	Table 5:	Functions process controller

Hierarchical control concept for easy control on the following levels
Process control		On this level switch between AUTOMATIC and MANUAL
		mode.
Configuration and parameterization		On this level specify certain basic functions during start-
		up and, if required, configure additional functions
Table 6:	Process controller - hierarchical control concept

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Type 8692, 8693

Description of system

9.Interfaces of the positioner for the multipole model

Inputs for position or					2 binary outputs
process set-point value
4	– 20 mA		Positioner
0	– 20 mA				Proximity switch 1
0	– 10 V		(Multipole model)
0	– 5 V
Input for process				Outputs	Analogue
actual value		Inputs			position feedback
4	– 20 mA
Frequency
Pt 100
Binary input
24 V DC		Supply
			Operation

Figure 8: Interfaces for the multipole model

The positioners Type 8692 and Type 8693 are 3-wire devices, i.e. the power (24 V DC) is supplied separately from the set-point value signal.

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Type 8692, 8693

Description of system,

10.Interfaces of the positioner for the models with cable gland

Inputs for position or process set-point value 4 – 20 mA

0 – 20 mA

0 – 10 V

0 – 5 V

Input for process actual value1)

4 – 20 mA Frequency Pt 100

Binary input

24 V DC

	Positioner
	(Cable gland)
Inputs	Outputs

Supply

Operation

2 binary outputs1)

(as an alternative to input for process actual value)

Analogue position feedback

Figure 9: Interfaces for the model with cable gland

The positioners Type 8692 and Type 8693 are 3-wire devices, i.e. the power (24 V DC) is supplied separately from the set-point value signal.

1) Type 8693: The switch can be used to supply power to a connected sensor (description see “18.5.1 Terminal

assignment when selecting the process actual value input”)	29

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Type 8692, 8693

Description of system

11.Technical Data

11.1.Safety positions after failure of the electrical or pneumatic auxiliary power

		Safety positions after failure of the auxiliary
Actuator system	Designation	power

			electrical	pneumatic
				pilot-controlled
				control system:
		single-acting	down	down
	up	control function A		direct-acting
	down			control system:
				not defined
				pilot-controlled
				control system:
		single-acting	up	up
	up	control function B		direct-acting
	down			control system:
				not defined
		double-acting	down / up
	up		(depending on the con-	not defined
		control function I	nection of the control
	down		cables)

Table 7: Safety positions

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