Samson Trovis 6493 Mounting And Operating Instructions
Automation System TROVIS 6400
Compact Controller
TROVIS 6493
®
Electronics from SAMSON
Mounting and
Operating Instructions
EB 6493-1 EN
Firmware version 2.03 and 3.03
Edition February 2002
Modifications of firmware versions 2.03 and 3.03
The latest version of the TROVIS 6493 Compact Controller is equipped with an infrared interface. Apart from setting and operating the controller using the operator keys on the front panel,
the integrated infrared interface allows you to configure, parameterize and operate the controller using the TROVIS-VIEW Configuration and Operator Interface.
The software for both compact controller versions has been upgraded:
4
6493-01 Firmware version 2.03
4
6493-02 Firmware version 3.03.
The measuring range of the reference variable ( WINT, WINT) is adapted automatically to
the previously determined measuring range of the controlled variable ( IN1, IN1 or
IN2, IN2). However, changing the measuring range of the reference variable afterwards
does not result in an automatic adaption of the measuring range of the controlled variable (see
section 3.3.1).
Automatic adaption in the CLAS function (see section 3.2.5):
The CLAS function enables you to assign the signals X and WE to the analog inputs IN1 and
IN2. By default, X is assigned to input IN2, WE is assigned to input IN1. If, however, X is assigned to input IN1, WE is automatically assigned to input IN2. So far, WE had to be assigned
manually to input IN2.
The parameter Y.PRE has been added to the PAR function.
This parameter determines the rate action of the output signal (see section 3.1).
2 EB 6493-1 EN
Firmware versions 2.03 and 3.03
Contents
1 Notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2 Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.1 Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.2 Keys . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.3 Operating level. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
2.4 Setup level . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
2.5 Key number. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
2.6 Example for configuration and parameterization . . . . . . . . . . . . 12
2.7 TROVIS-VIEW Configuration and Operator Interface . . . . . . . . . . 16
3 Functions of the compact controller . . . . . . . . . . . . . . . . . . 18
3.1 PAR Control parameters . . . . . . . . . . . . . . . . . . . . . . . . 18
3.2 IN Input functions . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
3.2.1 IN1 Input signal range IN1 . . . . . . . . . . . . . . . . . . . . . . 20
3.2.2 IN2 Input signal range IN2 . . . . . . . . . . . . . . . . . . . . . . 20
3.2.3 MEAS Measuring range monitoring for analog input 1 and 2 . . . . . . 21
3.2.4 MAN Changeover to manual mode upon transmitter failure . . . . . . 21
3.2.5 CLAS Assignment of X and WE . . . . . . . . . . . . . . . . . . . . 22
3.2.6 DI.FI Filtering of input variable X and WE . . . . . . . . . . . . . . . 22
3.2.7 SQR Root extraction. . . . . . . . . . . . . . . . . . . . . . . . . . 23
3.2.8 FUNC Function generation of X and WE . . . . . . . . . . . . . . . . 23
3.3 SETP Reference variable . . . . . . . . . . . . . . . . . . . . . . . . 25
3.3.1 SP.VA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
3.3.2 SP.FU . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
3.4 CNTR Controller structure and functions . . . . . . . . . . . . . . . . 29
3.4.1 C.PID Dynamic behavior of controller output . . . . . . . . . . . . . . 29
3.4.2 SIGN Inversion of error Xd . . . . . . . . . . . . . . . . . . . . . . 31
3.4.3 D.PID Assignment of controller output D element . . . . . . . . . . . . 31
3.4.4 CH.CA Control mode changeover P(D)/PI(D) control . . . . . . . . . . 32
3.4.5 M.ADJ Operating point adjustment in manual mode for Y
PID
. . . . . . 33
3.4.6 DIRE Operating direction of output variable . . . . . . . . . . . . . . 33
3.4.7 F.FOR Feedforward control . . . . . . . . . . . . . . . . . . . . . . 33
3.4.8 AC.VA Increase, decrease of actual value . . . . . . . . . . . . . . . 34
3.5 Output functions . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
3.5.1 SAFE Initialization of constant output value Y1K1 for Y
PID
. . . . . . . 35
3.5.2 MA.AU Manual/automatic changeover . . . . . . . . . . . . . . . . 35
3.5.3 Y.LIM Output signal limitation Y
PID
. . . . . . . . . . . . . . . . . . 37
3.5.4 RAMP Output ramp or limitation of rate of output changes Y
PID . . . . . 37
EB 6493-1 EN 3
Contents
3.5.5 BLOC Locking of output signal Y
PID . . . . . . . . . . . . . . . . . . 39
3.5.6 FUNC Function generation of output variable. . . . . . . . . . . . . . 39
3.5.7 Y.VA Output signal range . . . . . . . . . . . . . . . . . . . . . . . 39
3.5.8 Y.SRC Assignment of continuous-action output . . . . . . . . . . . . . 40
3.5.9 CALC Mathematical adaption of continuous output . . . . . . . . . . . 40
3.5.10 C.OUT Configuration of two-step or three-step output. . . . . . . . . . 41
3.5.11 B.OUT Configuration of binary outputs BO1 and BO2 . . . . . . . . . 50
3.6 ALRM Alarm functions . . . . . . . . . . . . . . . . . . . . . . . . 51
3.6.1 LIM1 Limit relay L1 . . . . . . . . . . . . . . . . . . . . . . . . . . 52
3.6.2 LIM2 Limit relay L2 . . . . . . . . . . . . . . . . . . . . . . . . . . 52
3.7 AUX Additional functions . . . . . . . . . . . . . . . . . . . . . . . 53
3.7.1 RE.CO Restart conditions after power failure . . . . . . . . . . . . . . 53
3.7.2 ST.IN Resetting to factory defaults . . . . . . . . . . . . . . . . . . . 54
3.7.3 KEYL Operator keys . . . . . . . . . . . . . . . . . . . . . . . . . . 54
3.7.4 VIEW Setting of display contrast . . . . . . . . . . . . . . . . . . . . 54
3.7.5 FREQ Power frequency . . . . . . . . . . . . . . . . . . . . . . . . 55
3.7.6 DP Decimal place setting . . . . . . . . . . . . . . . . . . . . . . . 55
3.8 TUNE Start-up adaption . . . . . . . . . . . . . . . . . . . . . . . . 55
3.8.1 ADAP Start-up adaption. . . . . . . . . . . . . . . . . . . . . . . . 55
3.9 I-O View process data. . . . . . . . . . . . . . . . . . . . . . . . . 58
3.9.1 CIN Firmware. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
3.9.2 S-No Serial number . . . . . . . . . . . . . . . . . . . . . . . . . . 58
3.9.3 ANA View values of analog inputs. . . . . . . . . . . . . . . . . . . 58
3.9.4 BIN Status of binary input and outputs . . . . . . . . . . . . . . . . . 59
3.9.5 ADJ Adjusting the analog inputs and output . . . . . . . . . . . . . . 59
4 Practical examples . . . . . . . . . . . . . . . . . . . . . . . . . . 61
4.1 Fixed set point control . . . . . . . . . . . . . . . . . . . . . . . . 61
4.2 Follow-up control . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
4.3 Follow-up control with function generation . . . . . . . . . . . . . . . 64
5 Start-up. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
5.1 P controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
5.2 PI controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
5.3 PD controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
5.4 PID controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
6 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70
7 Electrical connections . . . . . . . . . . . . . . . . . . . . . . . . . 72
8 Technical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74
Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101
4 EB 6493-1 EN
Contents
1 Notes
The TROVIS 6493 Compact Controller is a microprocessor-based controller with a flexible software design for the automation of industrial process plants. It is suitable for single control loops
as well as for more complex control tasks. The flexible software design allows you to configure
control circuits without changing the hardware. The read-only functions can be adapted to your
specific plant configuration.
These Mounting and Operating Instructions (EB) describe the powerful features of the compact
controller. First, we will explain how to operate the controller conveniently. All functions and
parameters are described in section 3. Section 4 provides some practical examples to show you
which settings need to be adjusted for the specific cases of application. In sections 6 and 7, the
electrical connections and the installation are dealt with. The index at the end of this EB gives
you quick and direct reference in case you have specific questions or problems.
EB 6493-1 EN 5
Notes
4
The controller may only be installed, started up or operated by trained and experienced personnel familiar with the product.
According to these mounting and operating instructions, trained personnel refers to individuals who are able to judge the work they are assigned to and recognize possible dangers due to their specialized training, their knowledge
and experience as well as their knowledge of the applicable standards.
4
The controller has been designed for use in electrical power systems. For wiring and maintenance, you are required to observe the relevant safety regulations.
4
Proper shipping and appropriate storage are assumed.
2 Operation
The TROVIS 6493 Compact Controller can be operated either directly using the keys on the
front panel or using the TROVIS-VIEW Configuration and Operator Interface (see section 2.7)
for configuration, parameterization and operation.
In the following, we will explain how to operate the controller with the keys on the front panel.
First, open the folded back cover of this EB. There is the controller's front panel with its display
and six keys. Principally, there are two levels which provide different key functions and different
displays: the operating level and the setup level. You may define the functions of the compact
controller via configuration and parameterization. A table listing all details required for
parameterization and configuration is provided in Appendix A. In addition, we will explain
how to configure and parameterize using this table in section 2.6.
2.1 Display
Depending on the selected level, the display shows the following variables and operating states
(see folded back cover):
No. Operating level Setup level
1 Controlled variable X Designations, settings and values of
functions, parameters; abbreviations
are listed in Appendix A
2 Value assumed by W, W2,
WE, Y or Xd
3 Limit relay L2 active Not displayed
4 Three-step output – Not displayed
5 Limit relay L1 active Not displayed
6 Three-step output + or two-step output Not displayed
7 Alarm messages
(see section 3.2.3) Not displayed
8 Hand icon displayed in manual mode
No icon in automatic mode
Not displayed
9
Press the key to display W, W2,
WE, Y or Xd% in sequence. The associated value appears in (2).
W2 and WE only when they have been
activated (see section 3.3.1).
and are used for minimum and
maximum values of different parameters.
10 Bar graph display of Xd in percent Not displayed
6 EB 6493-1 EN
Operation
2.2 Keys
The compact controller is operated using six keys whose function depends on the selected level.
Key Function in operating level Function in setup level
Enter key
(yellow)
Provides access to setup level.
Activates a new reference variable if
its icon (W, W2 or WE) blinks in the
display (9).
Activates functions and parameters
to be changed (display blinks).
Confirms new settings of functions
or parameters (display stops blinking).
Selector key Switches lower display section be-
tween:
W internal reference variable 1,
W2* internal reference variable 2,
WE* external reference variable,
Y continuous output variable,
Xd% error
* Only when selected, see p. 27.
Provides access to parameter level.
Jump within the value range in parameter level.
Manual/automatic key
Changes from manual to automatic
mode and vice versa.
In manual mode, appears.
No function
Cursor keys Change the value of W or W2 when
they are displayed in the lower display section.
Change controller output in manual
mode, and when Y is indicated in
the lower display section.
Browse within the main groups,
functions, settings and parameters.
Change function settings and parameter values.
Return key Displays the current reference vari-
able.
Return to preceding level up to operating level.
No key pressed After approx. 5 minutes, display
changes to current reference variable.
Exception: in manual mode and when output
variable is displayed
Changes to operating level after
approx. 5 minutes.
EB 6493-1 EN 7
Operation
2.3 Operating level
In the operating level,
you can
Press Comments
view different variables:
W, W2, WE, Y, Xd
Press selector key repeatedly until the desired variable appears on the display.
W2 and WE are only displayed when you have
activated them in SETP
(see section 3.3.1).
select another reference
variable
Press selector key repeatedly until the desired reference variable (W, W2
or WE) is displayed.
When the reference variables are deactivated, W,
W2 or WE blink.
Whereas they do not
blink when active.
Press the enter key.
change the value of the
internal reference variable W or W2
Press selector key repeatedly until W or W2 appears.
New value is accepted at
once.
No confirmation required.
Change the value using
the cursor keys.
switch to manual mode Press manual/automatic
key.
In manual mode, use the
cursor keys to determine
the output variable.
change the output variable
Press manual/automatic
key to display Y.
Change its value using
the cursor keys.
enter setup level for
configuration and
parameterization
Press enter key. Do not press the enter key
when W, W2 or WE
blink, otherwise you activate a new reference variable!
8 EB 6493-1 EN
Operation
2.4 Setup level
This level enables you to configure and parameterize the compact controller. You can enter the
setup level from the operating level by pressing the enter key once. Here, you may adapt preset
functions to your specific needs (configure) and change parameters. The functions are arranged in nine main groups:
4
PAR (control parameters)
4
IN (input functions)
4
SETP (reference variable)
4
CNTR (control structure and functions)
4
OUT (output functions)
4
ALRM (alarm functions)
4
AUX (additional functions)
4
TUNE (start-up adaption)
4
I-O (view process data)
The parameters are always connected to the function they are assigned to.
This means that pressing allows you to access only the parameters that are relevant for the
particular function you have chosen.
Appendix A lists all functions and parameters provided by the compact controller. The table in-
cludes the main groups and their functions with the setting options in the left column, and the associated parameters in the right column. This table will considerably facilitate learning how to
operate the controller. You only have to keep the following in mind:
To move from left to right (in columns), press .
To move in the reverse direction (from right to left), use the return key .
The key number (KEY) must be entered in setup level only when a function or parameter is
changed for the first time.
The right column of the table, i.e. the parameters, can be accessed by pressing the selector key
. Again, press the enter key to move forward in columns.
To move in rows from top to bottom, press .
To move in reverse direction, press . Confirm new settings or the new value by pressing .
An example in section 2.6 illustrates how to configure and parameterize the controller prop-
erly.
Note!
The display changes from setup level to operating level after 5 minutes when no key is pressed!
EB 6493-1 EN 9
Operation
2.5 Key number
You are prompted to enter the key number when you want to change the settings of
functions and parameters.
The compact controller can be operated with or without a key number. Factory default is without
key number. Each time you wish to change a function or parameter in the setup level for the first
time, you will be prompted to enter the key number. Proceed as follows:
Press Reading on display Comment
KEY blinks. Enter the key number.
Skip the next step for operation without
key number.
Note! If the reading on the display looks
like this, the key number can always be
changed (see next section).
or
KEY blinks.
Enter the valid key number. In this ex-
ample it is 12.
If you have entered the correct key number, the selected function blinks in the
display. If not, you are prompted to enter the key number again with 1 appearing in the upper display section. This means that the controller operates
with key number.
Enter the key number again or cancel by pressing the return key .
Changing the key number
You may define a new key number or set up the controller to operate without key number.
When defining a new key number, you need to know the service key number which is to be
found on page 104. To prevent misuse, you should cut it out or make it unreadable.
Proceed as follows to define a new key number:
10 EB 6493-1 EN
Operation
Press Reading on display Comment
You are in operating level.
The reading on the display looks like this.
3x
KEY blinks.
Note! If the reading on the display looks
like this, the key number can always be
changed.
or
KEY blinks.
Enter the service key number. See page
104.
You have confirmed the service key number.
You now see KEYP which stands for key
number programming. The upper display section shows the current key number. The four dashes stand for "without
key number".
Enter the new key number (---- for "without key number"). We have chosen 12 in
this example.
EB 6493-1 EN 11
Operation
Press Reading on display Comment
You have confirmed the new key number
and returned to the selected function or
parameter. In our example, we have returned to the Kp value.
2.6 Example for configuration and parameterization
We will use the "Table of functions and parameters" provided in Appendix A for this example.
The exercise consists of setting up the controller as a PID controller and adjusting the parameters
accordingly.
The biggest problem is of course where to find the appropriate function and what to change in
this function. There are two ways to proceed. You may search for the function in the table in Appendix A, which also provides reference to further details. Or you may refer to the index. For
the PID controller, you will find the C.PID function which belongs to the main group CNTR. As
you already know which main group is to be activated and which function is to changed, proceed as follows:
Press Reading on display Comment
You are in operating level.
The display reading will be similar to the
one depicted here.
You have entered the setup level. The display shows the first main group PAR.
Main groups are always displayed in a single line. You are now in the first column of
the table in Appendix A.
Note! If you press the enter key again, you
get to Kp (see page 14).
12 EB 6493-1 EN
Operation
Press Reading on display Comment
repeatedly
until CNTR
appears on the
display.
Browse through the main groups (in the table in Appendix A, you move from top to
bottom) until you get to the main group
CNTR. Here, you can adjust the dynamic
behavior of the controller output.
You have entered the main group CNTR
(moved to the right in table). You have
reached the functions. Functions are always
marked by -CO- for configuration.
The display shows the first function C.PID,
"Dynamic behavior of controller output". In
our case, the function we were looking for.
You have moved one column further to the
right. You now see the current settings of the
PI action function. These settings are to be
changed to PID action.
KEY blinks
You are prompted to enter the key number
(KEY). This prompt is displayed when you
change a function for the first time after entering the setup level. You will not be
prompted for subsequent changes.
If you do not use a key number, skip the next
step.
or
Use the cursor keys to enter the key number.
In our example it is 27.
EB 6493-1 EN 13
Operation
Press Reading on display Comment
The display will look like this if you have entered the key number correctly. If not, you
will be prompted again. The upper line
blinks, meaning that you may change the
settings of the function. In the table, you
have moved one column further to the right
and have reached "Setting options".
or
The upper line blinks.
Use the cursor keys to select the desired set-
ting. In our example it is Pld for PID action of
the controller output.
Confirm changes with the enter key. The upper line stops blinking. The first part of the
task is completed.
Now the control parameters KP, TN and TV
are to be changed. To do so, enter the parameter level.
Press the selector key to open the parameter
level. In the table, you have jumped to the
first column on the right page.
C.PID and CP.YP are displayed alternately
in the lower display line.
The first parameter Kp is displayed.
Note! You can go directly from the PAR dis-
play to this display by pressing the yellow
enter key once. You may only change the
control parameters KP, TN, TV and Y.PRE.
14 EB 6493-1 EN
Operation
Press Reading on display Comment
KP blinks, i.e. you can change this parameter.
or
Enter a new value for KP. In our example it
is 1.5. The upper line continues to blink.
You have confirmed the new value for KP.
The upper line stops blinking.
The next parameter is displayed.
To change this and other parameters, pro-
ceed as described for KP, i.e. repeat the
steps in the fields highlighted in gray.
repeatedly
until the display
looks like this!
You are back in the operating level. indicates that the compact controller is in
manual mode.
EB 6493-1 EN 15
Operation
2.7 TROVIS-VIEW Configuration and Operator Interface
The TROVIS 6493 Compact Controller can be configured, parameterized and operated using
SAMSON's TROVIS-VIEW Configuration and Operator Interface via the infrared interface integrated in the front panel.
Operating TROVIS-VIEW is similar to working in Windows Explorer. Apart from configuration,
parameterization and operation, TROVIS-VIEW provides additional features to record the
compact controller. These are, for example, editing plant texts, saving and printing various configuration and parameterization data, tabulating analog inputs and outputs as well as binary
status reports.
The TROVIS-VIEW software with the device-specific module for the TROVIS 6493 Compact
Controller is delivered on a CD-ROM (order no. 6661-1031).
For system requirements, refer to the TROVIS-VIEW Data Sheet T 6661 EN or to the readme.txt
file in the root directory of the CD-ROM.
Communication between the PC and the compact controller is established via the infrared interface integrated in the controller. The IR interface can be accessed via the controller's front
panel. It is located to the left of the yellow enter key (see Fig. 1).
An infrared adapter (order no. 8864-0900) is required to transfer data between the PC's serial
RS-232 interface and the controller's integrated infrared interface.
Note!
For additional information on installation, connection and operation, refer to the Mounting
and Operating Instructions EB 6493-2 EN.
16 EB 6493-1 EN
Operation
EB 6493-1 EN 17
Operation
Xd%
W
L 21
L
25
°
0.7 m
2
1
Fig. 1 · Connecting an infrared adapter
TROVIS 6493
1 Infrared adapter
2 Optional
COM 1...COM 4 port of
computer
3 Functions of the compact controller
In this section, all functions of the setup level are described. We assume that you are familiar
with the operation of this controller and know how to change functions and parameters.
The compact controller contains nine main groups: PAR, IN, SETP, CNTR, OUT, ALRM, AUX,
TUNE and I-O. Each of the sections 3.1 to 3.9 is dedicated to one of the main groups. The main
groups have different functions which can be identified by -CO- displayed in the upper display
section. The functions are explained in the subsections (e.g. 3.2.1); the subsection titles already
indicate the functions' designation. Almost every function provides different setting options from
which you can choose one to adapt this function to your specific needs. The setting options of
the functions are marked with a small grey square in these instructions. If you need to adjust
parameters for your function, they will be specified and explained, if necessary. The value
range of the parameters and factory defaults can be found in Appendix A.
3.1 PAR Control parameters
This main group serves a special purpose. In contrast to all other main groups, it does not include any functions. When you open this level, the controller immediately jumps to the parameter level where the control parameters Kp, Tn, Tv and Y.PRE can be set.
This main group allows you to quickly set the control parameters. You may also adjust the same
settings in the main group CNTR, with the C.PID function.
3.2 IN Input functions
This main group defines all the functions of the two analog inputs In1 and In2. You may specify
the input signal range and assign the analog inputs to the controlled variable X or the external
reference variable WE. In addition, you can determine the measuring range of both signals.
You may also perform measuring range monitoring. Moreover, the input signal can be filtered
or functions may be generated from it.
18 EB 6493-1 EN
Functions of the compact controller
EB 6493-1 EN 19
Functions of the compact controller
IN
IN1
CLAS[WE]
WE
WE
DI.FI[WE] SQR[WE]
WE.VA
CO.VA
LIM1[L1.WE] LIM2[L2.WE]
LIM1 LIM2
LIM1[L1.X] LIM2[L2.X]
LIM1 LIM2
FUNC[WE]
FUNC[X]
Input
assignment
Dig. filter Function generation
F
CLAS[X]
Measuring range
monitoring
X
X
DI.FI[X] SQR[X]
F
Root
extraction
IN1
A
D
IN2
A
D
MEAS MAN
I – O I – O IN ALRMIN
IN2
Fig. 2 · Main group IN
3.2.1 IN1 Input signal range IN1
This function enables you to define the input signal type and range for the analog input In1. The
parameters' lower and upper range values must be given as absolute values.
Choose between:
g
0-20 mA 0 to 20 mA input
g
4-20 mA 4 to 20 mA input
g
0-10 V 0 to 10 V input
g
2-10 V 2 to 10 V input
Parameters to be set
IN1 Lower range value as absolute value
IN1 Upper range value as absolute value
3.2.2 IN2 Input signal range IN2
Note that there are two hardware versions for the analog input In2: controller version 6493-01
(model no. on the name plate) has a temperature sensor or potentiometer input, whereas controller version 6493-02 has a mA input.
This function enables you to define the input signal type and range for the analog input In2. The
measuring range must be specified with the parameters IN2 and IN2. Make sure that the
span is not smaller than 100 °C.
Choose between:
g
100 PT Pt 100 resistance thermometer, hardware range –100 to 500 °C
g
1000 PT Pt 1000 resistance thermometer, hardware range –100 to 500 °C
g
100 NI Ni 100 resistance thermometer, hardware range –100 to 500 °C
g
1000 NI Ni 1000 resistance thermometer, hardware range –60 to 250 °C
g
0-1 KOHM 0 to 1000Ωinput
Parameters to be set
IN1 Lower range value as absolute value
IN1 Upper range value as absolute value
This function enables you to define the input signal type and range for the analog input In2. Enter the lower and upper range values as absolute values of the parameters you require.
Choose between:
g
0-20 mA 0 to 20 mA input
g
4-20 mA 4 to 20 mA input
20 EB 6493-1 EN
Functions of the compact controller
Parameters to be set
IN2 Lower range value as absolute value
IN2 Upper range value as absolute value
3.2.3 MEAS Measuring range monitoring for analog input 1 and 2
This function enables you to define whether the measuring ranges of the analog inputs are to be
monitored either for exceeding or falling below the measuring range.
Choose between :
g
oFF ME.MO No measuring range monitoring
g
In1 ME.MO Measuring range monitoring of analog input IN1
g
In2 ME.MO Measuring range monitoring of analog input IN
g
ALL ME.MO Measuring range monitoring of both analog inputs IN1 and IN2
When values exceed or fall below the measuring range, this is signalized on the display by the
alarm message icon . The binary output is set for alarm messages. In addition, "__o1" blinks
in the upper display section when values exceed the measuring range, "__u1" blinks when values fall below the measuring range of analog input 1, or of the analog inputs 1 and 2. When
analog input 2 exceeds or falls below the measuring range, " __o2" or "__u2" appears on the
display. Whenever values exceed or fall below the measuring range, the compact controller
can change to manual mode (see section 3.2.4).
3.2.4 MAN Changeover to manual mode upon transmitter failure
This function enables you to define whether the controller switches to manual mode, and which
output value is generated when the measuring range is exceeded or not reached. This function
only becomes effective when measuring range monitoring has previously been activated in the
MEAS function (see previous section 3.2.3). Manual mode is easily recognizable by on the
display.
Choose between:
g
oFF FAIL No changeover to manual mode upon transmitter failure
g
F01 FAIL Changeover to manual mode with constant output value Y1K1
g
F02 FAIL Changeover to manual mode with last output value received
Parameter to be set
Y1K1 Constant output value
EB 6493-1 EN 21
Functions of the compact controller
Note!
When values exceed or fall below the measuring range, Y1K1 only becomes effective when
the compact controller is in automatic mode.
The parameter Y1K1 can also be set in the main group OUT via the SAFE function as well as in
the main group AUX via the RE.CO function (see sections 3.5.1 and 3.7.1).
3.2.5 CLAS Assignment of X and WE
Internally, the compact controller operates with the analog input signals X and WE. The CLAS
function is used to assign these signals to the analog inputs IN1 or IN2. By default, X is assigned
to analog input IN2 and WE to analog input IN1.
Assignment of X
g
IN1 X X assigned to analog input IN1
g
IN2 X X assigned to analog input IN2
Assignment of WE
g IN1 WE WE assigned to analog input IN1
g
IN2 WE WE assigned to analog input IN2
3.2.6 DI.FI Filtering of input variable X and WE
This function enables you to determine whether X and/or WE are to be filtered.
The first-order filter (low-pass filter or Pt1 behavior) smooths the selected signals and suppresses
input signal interferences of higher frequency.
The time constant of the Pt1 element is defined by the parameter TS.X for the input signal X, and
by TS.WE for the input signal WE. The time constant is given in seconds.
Filtering of input variable X
g
oFF X Filtering of input variable X deactivated
g
on X Filtering of input variable X activated
Filtering of input variable WE
g
oFF WE Filtering of input variable WE deactivated
g
on WE Filtering of input variable WE activated
22 EB 6493-1 EN
Functions of the compact controller
Parameters to be set
TS.X Time constant X filter in seconds
TS.WE Time constant WE filter in seconds
3.2.7 SQR Root extraction
This function enables you to root-extract the signals X as well as WE. Thus, you may easily calculate the flow rate from a differential pressure, for example. Choose between:
Root extraction X
g
oFF X No root extraction of signal X
g
on X Root extraction of X
Root extraction WE
g
oFF WE No root extraction of signal WE
g
on WE Root extraction of WE
3.2.8 FUNC Function generation of X and WE
You may apply function generation to the signal X as well as to WE. Choose between:
Function generation of X
g
oFF X No function generation of signal X
g
on X Function generation of X
Function generation of WE
g
oFF WE No function generation of signal WE
g
on WE Function generation of WE
EB 6493-1 EN 23
Functions of the compact controller
Function generation means
that a signal is re-evaluated to
be further processed. This allows you to adapt auxiliary,
reference or equivalent variables required for measuring
and control to your specific
control loop. For this purpose,
you must specify 7 points to
characterize the relationship
between signal E to be function-generated (X or WE) and
the desired new output signal
E' (X' or WE'). This relationship should be known to you
either from physical laws, experience or from calculated
values (e.g. the relationship
between steam pressure and temperature). We recommend that you either draw up a table or
create a curve in a Cartesian coordinate system. Choose the 7 points in such a way that a curve
can easily be created by drawing straight lines between two adjacent points.
The points are entered via the parameters K1.X to K7.X for the input signal, and K1.Y to K7.Y
for the output signal. The values are entered as absolute values, i.e. in units of measurement
comprehensible to the user (e.g. in °C, bar or %).
Even when the signal curve can be sufficiently characterized by less points, 7 points must be
specified. If applicable, they can be defined in the same position as the last point.
The parameters MIN and MAX are used to determine the measuring range of the output signal
E'. It corresponds to that of signal E (not function-generated) with reference to the output signal
E'. By entering these two parameters, a proper basis for the percentage calculation performed
by the software is created.
If K1.Y or K7.Y do not agree with MIN and MAX, the output values for the function-generated
signal, which are below or above these limits, are constantly set to K1. Y or K7.Y. In doing so,
the compact controller completes the polygonal curve by generating straight lines (see Fig. 3).
If you have entered an output value greater than MAX or smaller than MIN, it will be set to the
value of MAX or MIN.
You will find an application example for function generation in section 4.3.
24 EB 6493-1 EN
Functions of the compact controller
E
E'
E
E'
MAX
K7.Y
K5.Y
K1.Y
MIN
K1.X
K5.X
K7.XK6.X
MBA MBE
Fig. 3 · Example of parameter for function generation
MBE Upper range value
MBA Lower range value
Note!
The course of the polygonal curve is not limited by the software. Polygonal curves with more
than one maximum or minimum are possible. However, make sure that you assign only one
ordinate value to one abscissa value. Otherwise, you risk to lose clear assignment of the input signal.
Parameters to be set
MIN Lower range value of output signal
MAX Upper range value of output signal
K1.X to K7.X Input values for points 1 to 7
K1.Y to K7.Y Output values for points 1 to 7
3.3 SETP Reference variable
This main group enables you to determine one or more reference variables, and you can switch
between them as required. The compact controller has two internal reference variables W and
W2 for fixed set point control. However, you must activate W2 to use it. The default setting of
the controller is fixed set point control. To obtain follow-up control, you only need to activate the
external reference variable WE. However, the input WE can also be used for fixed set point
control, serving as an input for the position transmission of a three-step output with external position feedback, or as feedforward control. If you want to activate one of these control modes,
you need to adjust them in this main group. Moreover, you may select a set point ramp with various starting conditions.
EB 6493-1 EN 25
Functions of the compact controller
26 EB 6493-1 EN
Functions of the compact controller
SP.FU
RAMP
Set point
ramp
SP.FU
SP.CO
WE
W
WE
W
W2
W2
BI
SP.VA
Reference variable selection
CH.SP W/W2/WE
FE.CO
SETP I – OI – O
Fig. 4 · Main group SETP
3.3.1 SP.VA
This function enables you to define which reference variables are active: W, W2 and/or WE.
When you activate WE, follow-up control will automatically be effective, unless you use WE as
input for the position transmission of a three-step output with external position feedback (F01
WE), or for feedforward control (F02 WE).
Parameter level allows you to define the desired value of the reference variable (W, W2) and its
measuring range ( WINT, WINT). This range must be identical to the measuring range of
the controlled variable ( IN1, IN1 or IN2, IN2). You may limit this measuring range
with the parameters WRAN and WRAN. The value of the reference variable can only be
chosen between WRAN and WRAN. This also applies in operating level.
Choose between:
Internal reference variable W
g
on W Internal reference variable W, always active
Parameters to be set
W Internal reference variable W
WINT Lower range value for W, W2, WE
WINT Upper range value for W, W2, WE
WRAN Limitation of W, W2, WE, lower limit
WRAN Limitation of W, W2, WE, upper limit
Internal reference variable W2
g
oFF W2 Internal reference variable W2 not active
g
on W2 Internal reference variable W2 active
Parameter to be set
W2 Internal reference variable W2
External reference variable WE
g
oFF WE External reference variable not active
g
on WE External reference variable active
g
F01 WE WE as input for external position feedback with three-step output
g
F02 WE WE as input for feedforward control (in this case, WE is not displayed
in operating level! It is only displayed in I-O level; see section 3.9.3).
EB 6493-1 EN 27
Functions of the compact controller
3.3.2 SP.FU
This function enables you to define a set point ramp and change between the different reference
variables via the binary input.
Set point ramp means that the
reference variable changes at
a constant rate. When the ref-
erence variable is changed,
the compact controller follows
this change with a certain de-
lay to prevent oscillations. The
transit time of the set point
ramp is determined by the pa-
rameter TSRW. TSRW refers
to the entire defined measur-
ing range, e.g. WINT and
WINT. When the reference
variable changes from a value
W
1
to a new value W2, the
actual transit time of the set
point ramp is the time t
1
, as il-
lustrated in Fig. 5.
You may start the set point
ramp via the binary input, and
choose between two starting values (actual value or parameter WIRA). The set point ramp can
also be active upon each change of the reference variable.
TSRW = t
1
x| WINT – WINT|
| W2 – W1|
Choose between:
Set point ramp
g
oFF RAMP Set point ramp deactivated
g
F01 RAMP Set point ramp starts with BI1 and actual value
g
F02 RAMP Set point ramp starts with BI1 and WIRA
g
F03 RAMP Set point ramp activated, no starting conditions
Parameters to be set
TSRW Transit time of set point ramp in seconds
WIRA Starting value of reference variable as absolute value
28 EB 6493-1 EN
Functions of the compact controller
WINT
WINT
W
t
1
TSRW
t
W
2
W1
Fig. 5 · Set point ramp
Upper range value
Lower range value
TSRW
Transit time of set
point ramp
W1 Old value of ref. variable
W
2 New value of ref. variable
t
1 Actual transit time of set
point ramp
You can use the binary input to change between the internal and external reference variable:
Changeover of W via BI1
g
oFF CH.SP No changeover between internal reference variable W (W2) and
external reference variable WE
g
F01 CH.SP Changeover between active internal reference variable W (W2)
and external reference variable WE via binary input BI1
g
F02 CH.SP Changeover between internal reference variables W and W2 via
binary input BI1. If W2 is active when setting the binary input, no
function will be performed. The function -CO- SP.VA may not be set
to "ON" for WE.
Note!
Several functions may be assigned to the binary input!
3.4 CNTR Controller structure and functions
This main group enables you to determine the functions for the control algorithm. You may define the dynamic behavior of the controller output, the operating direction of the error and the
output variable. In addition, you may select the input variable for the D element and set a control mode changeover. If you use the input WE for feedforward control, you may link this signal
to parameters. Optionally, the binary input can be used to influence the actual value. Finally,
you may define an operating point in manual mode, which is then added to the calculated operating point in automatic mode.
3.4.1 C.PID Dynamic behavior of controller output
This function enables you to define a dynamic behavior for the compact controller according to
the control algorithm. Factory default is PI action. You can also set the control parameters.
Moreover, you may define the dead band DZXD for the error; the control signal does not
change within this band. In addition, you can determine limits for the error using the parameters DZXD and DZXD. These minimum or maximum values of error are used for output
signal calculation.
Choose between:
g
P P controller
g
PI PI controller
g
PD PD controller
g
PID PID controller
g
PPI P2I controller
EB 6493-1 EN 29
Functions of the compact controller
30 EB 6493-1 EN
Functions of the compact controller
Xd%
Feedforward control
F.FOR
(+/–) ( WE – FC.K1 ) x FC.K2 + FC.K3
> 0
WE
W
X
Actual
value*
BI
P
I
D
X
XD
X
XD
*–1
SIGN
CH.CA
DPID
M.ADJ DIRE
Reversal of
operating
direction
Y.PRE
C.PID
L1.XD L2.XD
AV.K 1
AC.VA
ALRM
Limit monitorComparator
Dead
band
+
++
–
Limiter
LIM1 LIM2
CNTR
++
—
—
Fig. 6 · Main group CNTR
* Reading in the
operating level
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