10.1.Optimization (tuning the process control station to the controlled system) .........67
Appendix A Data point list for the RS-485 interface.......................................................71
Appendix B Error messages ..........................................................................................90
Appendix C Checklist....................................................................................................94
4
Notes on these mounting and operating instructionsDocumentation
1.Notes on these mounting and operating instructions
1.1.Documentation
Two manuals constitute the documentation for the TROVIS 6412 and 6442 Process Control
Stations: Mounting and Operating Instructions EB 6412 EN and Configuration Manual KH
6412 EN.
EB 6412 EN contains information about the installation, electrical connection and operation of
the control stations. Also introduced is how to work with the COPA pen, the COPA adapter and
the associated TROVIS 6482 Configuration and Parameterization Program. In addition, the
function of the RS-485 interface is described.
Configuration Manual KH 6412 EN presents a detailed description of the optional control
modes of the process control station, which can be defined by selecting the corresponding
configuration blocks and parameters.
1.2.Abbreviations used in this manual
The parameter names and input and output abbreviations used in this manual are those
appearing on the front-panel display of the TROVIS 6412 Process Control Station. These are
not always the same as the ones defined in the relevant DIN standards or often used in other
documents.
Caution!
!
Assembly, commissioning and operation of this process control station may only
be performed by experienced personnel.
5
2.Description
2.1.Features
The TROVIS 6412 and 6442 Process Control Stations are microprocessor-controlled devices
used to automate industrial and process engineering plants. They are suitable not only for
constructing simple control loops, but for solving complex control problems as well. The TROVIS
6412 and TROVIS 6442 Process Control Stations only differ from each other in their design
(see section 2.2.).
Function blocks which are permanently stored in memory allow the user to easily define
pre-configured control systems and select various functions. The control mode selected determines which configuration blocks can be set, and these configuration blocks in turn determine
the adjustable parameters.
The process control stations are available with various input boards with either three or four
analog inputs. Furthermore, each control station has three binary inputs.
The analog inputs of the input boards are suitable for either standardized current and voltage
signals, potentiometers, Pt 100 temperature sensors, thermocouples or transmitter supply. The
input board 4 in the Technical data (page 8 and following) is no longer available. As a result,
the use of thermocouples is restricted.
Standard outputs include: One continuous control output, one on-off/three-step output and one
binary output for error messages.
The functional range of the process control stations can be optionally enhanced with the
following: One additional continuous control output, one analog output, two limit switches and
two binary outputs.
The process control stations can be operated, configured, and parameterized directly on the
control panel via several keys. The functions associated with the respective keys can be
disabled.
An optional program - TROVIS 6482 - allows configuration and parameterization of the
process control station via a PC (see page 56). Apart from this, all configuration blocks and
parameters can also be transferred to the process control stations, using a configuration and
parameterization pen (COPA pen) (see page 58).
The process control stations can be equipped with a RS-485 serial interface for use in a higher
level process control system.
2.2.Versions
TROVIS64 2
Panel-mounting unit
1
Rack-mounting unit
4
FeaturesDescription
6
DescriptionThe process control station (overview)
2.3.The process control station (overview)
Y1
4)
Y2
Y +
Y -
4)
4)
1
4)
4)
1
4)
Control elements
Control mode−Filtering, root extraction, func-
Software functions:
−
Ai 1
Ai 2
tion generation of input variables−Combination of input variables
Ai 3
Ai 4
(addition, subtraction, multiplica-
tion, calculation of mean value,
comparison, ratio)
Operation with two set points−Set point ramp and output
variable ramp
−
1
Optionally linear and non-linear
control algorithms and compen-
sation algorithms−Output signal limitation (fixed,
−
variable or by means of an input
variable)
Split-range operation−Definition of starting and
−
1)
pen/
adapter
restart conditions, limit alarms
Adaptation of control parameters
or parameter control by an
external signal−Selection control (limiting control)
−
2)
3)
Optional equipment
4)
,
3)
,
2)
,
1)
Fig. 1 ⋅ Block diagram of the process control station
7
2.4.Technical data
Inputs
Input board1234
1)
Input 1mA, V,
potentiometer,
transmitter
supply
Pt 100 in 2/3 or 4-wire
circuit
Thermocouple
(int./ext.
reference
junction)
Input 2
mA, V input,
transmitter supply
Pt 100
in 2/3
or 4-wire
circuit
mA, V,
transmitter
supply
Input 3mA or V
input
mA, V,
transm. supply
OmittedOmitted
Input 4
mA, V or potentiometer
mA, V,
potentiometer,
transmitter
supply
mA, V or
potentiometer
mA or V
input
Measuring ranges4(0) to 20 mA or
2(0) to 10 V; 0.2(0) to 1 V; 1(0) to 5 V
Meas. range switch-overSoldering jumpers
Max. permissible values
Current ± 50 mA, voltage ± 25 V
Internal resistance
Current R
i
= 50 Ω; voltage Ri = 200 k
Ω
Permissible
DC voltage
0 to 10 V
ErrorZero point < 0.2 %, span < 0.2 %, linearity < 0.2 %
Temperature influenceZero point < 0.1 %/10 K; span < 0.1 %/10 K
Pt 100
temperature
sensors
Measuring ranges
2)
−
50 to 100 °C; 0 to 200 °C; 100 to 600 °C
Meas. range switch-overSoldering jumpers and configuration
Line resistances
Two-wire R
L1
+ R
L2
< 10 Ω,
Three-wire R
L1
= RL2 = RL3 < 50 Ω,
Four-wire, each R
L
< 100
Ω
ErrorZero point, gain, linearity < 0.2 %
Temperature influenceZero point < 0.2 %/10 K; span < 0.2 %/10 K
Potentiometer Measuring range
0 to 1kΩ, ± 100 Ω, three-wire
Line resistance
R
L
< 10 Ω each
ErrorZero point < 0.2 %, gain < 0.2 %
Temperature influenceZero point < 0.1 %/10 K; gain < 0.2 %/10 K
Thermocouple
1)
Specifications on request
Transmitter supply16 to 23 V, max. 50 mA, short-term short-circuit protected
Binary inputs3 binary inputs,
switching contacts (load 36 V DC, approx. 3 mA) or
external switching voltage (24 V DC, ± 30 %,
maximum 6 mA), selection via soldering jumpers
Technical dataDescription
8
DescriptionTechnical data
Outputs
Continuous
control output
Signal range
Output control range
4(0) to 20(22) mA, permissible load < 750 Ω or
2(0) to 10 V, permissible load > 3 kΩ
−10 to 110 %
ErrorZero point < 0.3 %, nominal end value < 0.3 %,
linearity < 0.3 %
Temperature influenceZero point < 0.1 %/10 K; nominal end value < 0.1 %/10 K
OptionsControl output1 continuous control output for split-range operation;
signal range, output control range, error and temperature
influence same as first continuous control output (see above)
Analog output
4(0) to 20 mA, permissible load < 750 Ω or
2(0) to 10 V or −10 to 10 V, permissible load > 3kΩ
Error and temperature influence same as first continuous
control output (see above)
Limit relay2 relays, floating contacts, maximum 250 V AC
(1 A AC, cos ϕ = 1) or maximum 250 V DC (0.1 A DC)
Binary outputs2; floating contacts; maximum 42 V AC (0.1 A AC);
42 V DC (0.05 A DC)
Interfaces
Serial
interface
on the
front-panel
Communications protocolTROVIS 6482 SAMSON Protocol
Number of stations1
RS-232 in conjunction w. SAMSON cable no. 1170-1141
Length of cable< 2 m
Transmittable dataConfiguration, parameters, input and output signals for
graphic display
COPA penRead/write pen for transmitting the CONFIGURATION and
PARAMETER data to/from the process controls station via
the front-panel serial interface
Serial
interface
RS-485
(optional)
Communications protocolModbus RTU 584
Data transmissionAsynchronous, half duplex, 4-wire or 2-wire
Character formatRTU (8 bit), 1 start bit, 8 data bits, 1(2) stop bit(s),
optional parity bit
Baud rate300 to 19200 bit/s
Number of addressable
246
stations
Number of stations32 (can be extended with repeater)
Length of cable and
transmitting medium
Transmittable dataConfiguration, parameters, operating state,
< 1200 m, with repeater maximum 4800 m, 4-wire (2
wires twisted, stranded in pairs, with static screen)
process variables, error messages
9
General specifications
DisplaysRead-off angleReadable from all sides, high-contrast and lighted
Liquid Crystal Display (LCD)
Displays
3
1
⁄
2
-digit set point (reference variable) display and
3
1
⁄
2
-digit controlled variable display; bar graph displays
for deviation (i.e. error) and output variable; LED displays
for range exceeding, alarm messages when limits are
exceeded, manual operation, faults etc.;
parameter display (only in the PARAMETER level)
ConfigurationPermanently stored function blocks for fixed set point
control, follow-up control with or without internal/external
set point change-over, cascade control, synchro control,
ratio control, SPC control, limiting control, DDC backup
fixed set point control via binary contact
Power supply230 V AC (200 to 250 V AC),
120 V AC (102 to 132 V AC),
24 V AC (21.5 to 26.5 V AC),
Option 24 V DC (19 to 34 V DC);
48 to 62 Hz
Power consumptionApprox. 18 VA
Temperature range
0 to 50 °C (operation),
−
20 to 70 °C (shipping and storage)
Degree of
protection
Panel-mounting unit: Front IP 54, case IP 30,
terminals IP 00;
Rack-mounting unit: IP 00
Overvoltage categoryII
Degree of contamination2
Conformance to European standardsEN 61010, edition March 1994
Electrical
connection
Functional earthingPanel-mounting unit: On case w. Cu-flex. lead > 2.5 mm
2
Rack-mounting unit: Connector, Type F
(DIN 41 612), Cu-flex. lead > 2.5 mm
2
Power voltage and
process signals
Panel-mounting unit: Screw terminals 1.5 mm2;
Rack-mounting unit: Two connectors, Type F
(DIN 41 612), soldering or crimp types
Total delay time
3)
Approx. 100 ms
ResolutionInput and output, approximately 11 bits
DimensionsSee Fig. 3 and Fig. 4
WeightPanel-mounting unit, approx. 1.9 kg; rack-mounting unit, 1 kg
1)
The input board 4 (thermocouple at input 1) is no longer available
2)
Specific measuring ranges on request
3)
Depending on how many functions are configured
Technical dataDescription
10
Installing the process control stationsTROVIS 6412 (panel-mounting unit)
3.Installing the process control stations
3.1.TROVIS 6412 (panel-mounting unit)
The TROVIS 6412 Process Control Station is designed for panel-mounting and has the front-frame
dimensions 72 x 144 mm. Perform the following steps in order to mount the controller:
1.Make a panel cut-out with the dimensions 68
+0.7
x 138
2.Push the process control station in the panel cut-out from the front side.
3.Install one supplied mounting bracket, both on the top and bottom of the control station
following steps 1) and 2) shown in Fig. 2 .
4.Turn the threaded rods in the direction of the control panel, using a screwdriver so that the
case is clamped against the panel ((step 3), Fig. 2 ).
TROVIS 6442 (rack-mounting unit for 19inch racks)Installing the process control stations
3.2.TROVIS 6442 (rack-mounting unit for 19inch racks)
The TROVIS 6442 Process Control Station is a rack-mounting unit designed for mounting in
19inch racks. It has to be installed as follows:
1.Push the control station along the guiding rails into the corresponding rack unit, making
sure it does not become tilted. Push until the connectors connect.
2.Secure the process control station to the rack unit by fastening it from the front, using two
screws (see 1, Fig. 4 ).
3Press one protective nipple (enclosed in the delivery) into each bore made for the screws.
14.5
(0.57)
Fig. 4 ⋅ Dimensions of the 19inch rack-mounting unit
162.5
(6.40)
190
(7.48)
100
(3.94)
128.5
(5.06)
1
1
70.5
(14 HP)
(2.77)
1Screw with
protective nipple
3.3.Opening the controller case
ATTENTION!
!
The case may only be opened by experienced personnel when the power to the process
control station has been cut off!
Re-jumpering (see section 4.) or retrofitting the process control station with an interface board
requires that the case be opened as follows:
1.With panel-mounting cases, remove small paper labels (see 1, Fig. 3 ) if necessary. With
19inch rack-mounting units, remove the two protective nipples. Unscrew the two screws
located on the front-panel of the case (see Fig. 3 or Fig. 4 , depending on the type of
case).
2.Withdraw controller section towards the front. Then, proceed as described for the
respective PCB to be modified.
12
Installing the process control stationsOpening the controller case
3.Unscrew the four screws (1, 2) and remove the two distance bolts (4).
4.Carefully withdraw the input and/or interface board from the case.
5.Modify the board as desired (see sections 4.1., 4.4.).
6.Carefully reinstall the interface or/and input board by plugging it/them into the associated
connectors. Make sure the connections are made correctly! Terminals 1 and 21 of each
connector are marked.
7.Reinstall the two distance bolts (3) and the four screws (1, 2).
Proceed as described under 8. to 10.
Modify the logic board (7, Fig. 5 ) as follows:
3.Unscrew the two screws (1).
4.Remove cover plate (3).
5.Modify the board as desired (s. sections 4.2. and 4.3.).
6.Reinstall cover plate, making sure that its curved part bends towards the outside.
7.Reinstall the two screws (1).
Proceed as described under 8. to 10.
8.Record any modifications made on the label located on the cover plate. With panel-mounting units, additionally mark modifications on the label on the outside case wall!
9.Insert controller section and fasten it with the two associated screws.
10. If necessary, reinsert small labels and protective nipple on the front-panel of the control
station.
Fig. 5 ⋅ Location of the boards in the controller case
13
Determining the input signalsSoldering jumpers
4.Soldering jumpers
ATTENTION!
!
The soldering jumpers may only be modified by experienced personnel when the power
to the process control station has been cut off!
Several functions of the process control station are determined by means of soldering jumpers.
Open the case as described in section 3.3. to modify the jumpers. The soldering jumpers are
marked on the soldering sides of the PCBs.
4.1.Determining the input signals
4.1.1.Input board 1 (IB1)
Note: Select the desired input signal and close the related soldering jumpers listed in line 3 or the following
ones of the table below (depending on type of signal selected)! Open all remaining jumpers associated with
the corresponding input (line 2)! See Fig. 5 for the location of the input board.
Input signalInput 1
(Ai 1)
Jumpers:
10 to 19
Current0 to 20 mA 11213141, 45
4 to 20 mA 11, 1421, 2431, 3441, 44, 45
−20 to 20 mA
Voltage 0 to 1 V11213141
0 to 5 V 12223242
0 to 10 V 13233343
0.2 to 1 V 11, 1421, 2431, 3441, 44
1 to 5 V 12, 1422, 2432, 3442, 44
2 to 10 V 13, 1423, 2433, 3443, 44
Potentiometer
0 to 1kΩ
11, 15, 1621, 25, 26
12, 17, 18
Input 2
(Ai 2)
Jumpers:
20 to 26
−−
Input 3
(Ai 3)
Jumpers:
31 to 34
−−
Input 4
(Ai 4)
Jumpers:
41 to 47
42, 46, 47
Transmitter supply10, 11, 14, 19
Soldering jumpers associated with the binary inputs for all input boards:
Switching contact50, 5160, 6170, 71
External switching voltageJumpers mentioned above are open
14
Binary input 1 (bi 1)
Jumpers
20, 21, 24
Binary input 2 (bi 2)
Jumpers
−−
Binary input 3 (bi 3)
Jumpers
Soldering jumpersDetermining the input signals
4.1.2.Input board 2 (IB 2)
Note: Select the desired input signal and close the related soldering jumpers listed in line 3 or the following
ones of the table below (depending on type of signal selected)! Open all remaining jumpers associated with
the corresponding input (line 2)! See Fig. 5 for the location of the input board. The soldering jumpers
associated with the binary inputs are described in section 4.1.1., page 14
Input signalInput 1
(Ai 1)
Input 2
(Ai 2)
Input 3
(Ai 3)
Input 4
(Ai 4)
Jumpers:
10 to 19
Current0 to 20 mA
Jumpers:
20 to 26
Jumpers:
30 to 34
Jumpers:
41 to 47
213141, 45
4 to 20 mA21, 2431, 3441, 44, 45
−20 to 20 mA
21, 25, 26
−−
Voltage0 to 1 V213141
0 to 5 V223242
0 to 10 V233343
−
0.2 to 1 V21, 2431, 3441, 44
1 to 5 V22, 2432, 3442, 44
2 to 10 V23, 2433, 3443, 44
Potentiometer
Transmitter supply
0 to 1kΩ−−
20, 21, 24
30, 31, 34
42, 46, 47
−
Pt 1002 /3-wire4-wire
10, 12, 13,
2)
15, X
Measuring
ranges
1)
−50 to 100 °C
0 to 200 °C
100 to 600 °C
1)
Select one measuring range and the corresponding soldering jumper. In the PA level, adjust the
measuring range by means of the parameters GWK
2)
For specific measuring ranges (on request), soldering jumper X must be open and soldering jum-
11, 14, 16,
2)
X
1)
19
1)
18
1)
17
and GWK1 .
1
−
per 17 must be closed.
15
Determining the input signalsSoldering jumpers
4.1.3.Input board 3 (IB 3)
Note: Select the desired input signal and close the related soldering jumpers listed in line 3 or the following
ones of the table below (depending on type of signal selected)! Open all remaining jumpers associated with
the corresponding input (line 2)! See Fig. 5 for the location of the input board. The soldering jumpers
associated with the binary inputs are described in section 4.1.1., page 14.
Input signalInput 1
(Ai 1)
Input 2
(Ai 2)
Input 4
(Ai 4)
Current0 to 20 mA
4 to 20 mA41, 44, 45
Jumpers:
10 to 19
−−
Jumpers:
20 to 29
Jumpers:
41 to 47
41, 45
−20 to 20 mA−
Voltage0 to 1 V41
0 to 5 V42
0 to 10 V43
0.2 to 1 V41, 44
1 to 5 V42, 44
2 to 10 V43, 44
Potentiometer
0 to 1kΩ
42, 46, 47
Transmitter supply40, 41, 44,
45, 48
Pt 1002 /3-wire4-wire2 /3-wire4-wire
10, 12, 13,
3)
15, X
Measuring
ranges
−50 to 100 °C
0 to 200 °C
100 to 600 °C
1)
Select one measuring range and the corresponding soldering jumper. In the Pa level, adjust the
measuring range by means of the parameters GWK
2)
Select one measuring range and the corresponding soldering jumper. In the PA level, adjust the
measuring range by means of the parameters GWK
3)
For specific measuring ranges (on request), soldering jumper X must be open and soldering jum-
19
18
17
1)
1)
1)
11, 14,
16, X
1
2
20, 22, 23,
3)
25, XX
and GWK1 .
and GWK2 .
21,24,
4)
29
28
27
26,
4)
XX
2)
2)
2)
−
per 17 must be closed.
4)
For specific measuring ranges (on request), soldering jumper XX must be open and soldering jumper 27 must be closed.
16
4.1.4.Input board 4 (IB 4)
Input board 4 is no longer available.
Note: Select the desired input signal and close the related soldering jumpers listed in line 3 or the following
ones of the table below (depending on type of signal selected)! Open all remaining jumpers associated with
the corresponding input (line 2). See Fig. 5 for the location of the input board. The soldering jumpers
associated with the binary inputs are described in section 4.1.1., page 14.
Input signal
Input 1
(Ai 1)
Input 2
(Ai 2)
Input 3/4
(Ai 3/4)
Jumpers:
10 to 19
Jumpers:
20 to 26
Jumpers:
41 to 47
Current0 to 20 mA
−
2141, 45
4 to 20 mA21, 2441, 44, 45
−
20 to 20 mA
21, 25, 26
−
Voltage0 to 1 V2141
0 to 5 V2242
0 to 10 V2343
0.2 to 1 V21, 2441, 44
1 to 5 V22, 2442, 44
2 to 10 V23, 2443, 44
0 to 50 mV 17
−−
0 to 100 mV 16
−
50 to 50 mV
15
−
100 to 100 mV
14
Potentiometer
0 to 1k
Ω−−
42, 46, 47
Transmitter supply
−
20, 21, 24, 29
40, 41, 44, 45, 49
Thermocouples
Type U
0 to 200 °C
17
−−
150 to 400 °C
16
300 to 600 °C
15
0 to 600 °C
14
Type R
0 to 700 °C
17
500 to 1200 °C
16
1000 to 1700 °C
15
0 to 1700 °C
14
Type T
0 to 150 °C
17
100 to 250 °C
16
200 to 400 °C
15
0 to 400 °C
14
Soldering jumpersDetermining the input signals
17
Determining the input signalsSoldering jumpers
Input signalInput 1
(Ai 1)
Jumpers:
10 to 19
Type S
Type L
Type B
Type J
0 to 700 °C
500 to 1200 °C
1000 to 1700 °C
0 to 1700 °C
0 to 350 °C
250 to 600 °C
500 to 900 °C
0 to 900 °C
200 to 1200 °C
1000 to 1500 °C
1300 to 1800 °C
200 to 1800 °C
0 to 400 °C
350 to 800 °C
17
16
15
14
17
16
15
14
17
16
15
14
17
16
Input 2
(Ai 2)
Jumpers:
20 to 26
Input 3/4
(Ai 3/4)
Jumpers:
41 to 47
−−
Type E
Type K
Reference
junction
temperature
for external
reference
junction
700 to 1200 °C
0 to 1200 °C
0 to 400 °C
300 to 700 °C
600 to 1000 °C
0 to 1000 °C
0 to 500
°C
400 to 900 °C
800 to 1300 °C
0 to 1300 °C
0 °C
20 °C
50 °C
15
14
17
16
15
14
17
16
15
14
11
12
13
18
Soldering jumpersSoldering jumpers on the logic board
4.2.Soldering jumpers on the logic board
See Fig. 5 for the location of the logic board
Soldering jumper: X closed, 0 open
1113212331333738SZLB 1 LB 2 LB 3
Continuous
control output Y1
Continuous
control output Y2
Analog output
Ao1
Operation with code numberX
Operation with interfaceXXX
0(4) to 20 mAX0
0(2) to 10 V0X
0(4) to 20 mAX0
0(2) to 10 V0X
0(4) to 20 mAX0X0
−10 to 10 V
0(2) to 10 V0XX0
0X0X
4.3.Soldering jumper for implementing the code number
The CONFIGURATION level and the PARAMETER level can be protected against unauthorized
use by means of code numbers. To activate this function, the soldering jumper SZ located on
the logic board must be closed (see table in section 4.2.). This jumper SZ is open when the
controller is delivered, meaning that the configuration and parameter data of the process
control station can be modified without having to enter a corresponding code number.
Refer to section 6.10 and 6.11 on how to define the code numbers for CONFIGURATION level
and the PARAMETER level.
19
Soldering jumpers on the interface boardSoldering jumpers
4.4.Soldering jumpers on the interface board
See. Fig. 5 for the location of the interface board and Fig. 6 for the location of the soldering
jumpers.
Important! In the interface mode, the soldering jumpers LB1, LB2 and LB3 on the logic board
must also be closed (see section 4.2., page 19). This must be observed when retrofitting the
process control station with the interface board.
Soldering jumper (LB)Default setting:
X closed, 0 open
Enable parity bitPARITAET0
Parity oddUNGERADE0
2 stop bitsRES0
Baud rate ModbusSelect a soldering jumper
Soldering jumpersSoldering jumpers on the interface board
Fig. 6 ⋅ Location of the soldering jumpers on the interface board
21
TROVIS 6412 (panel-mounting unit)Electrical connections
5.Electrical connections
When making the electrical connections, note the VDE 0100 regulations and the regulations
valid in the country where the control station is intended to be installed.
Use shielded cables for the signal lines of the analog and binary inputs, which are installed
outside the control cabinets, in order to avoid measuring errors or other interferences. Inside
the control cabinets, these lines have to be installed separately from the control and power
supply lines.
The shieldings of the lines are to be grounded on one side at the neutral point of the measuring
and control system.
5.1.TROVIS 6412 (panel-mounting unit)
The device has plug-in terminals for wires with cross-sections of 0.5 to 1.5 mm2 (DIN 45 140).
Binary inputs
Switching contact External switching voltage
81 82
bi 1
83
bi 2
84
85
bi 3
86
81 82
+
bi 1
83
84
+
–
–
bi 2
85
+
86
–
bi 3
Continuous control outputs Switching output Analog output
With reference
junction sensor
(item no.
1070-8472)
2W
4W
3W
2W
+
Ri
Ri
–
mV source
1
2
8
7
Pt 100
Pt 100
34
+
2-wire transmitter 2-wire transmitter
Ri
+
–
mA
+
–
V
+
2-wire transmitter
–
Pt 100
–
–
+
2-wire transmitter
0%
0%
0%
0...1000
+
mA
+
V
0...1000
+
mA
+
V
0...1000
–
–
+
–
–
–
–
+
Fig. 8 ⋅ Terminal assignment of TROVIS 6412 (continued)
2-wire transmitter + −
+
–
23
TROVIS 6442 (rack-mounting unit for 19inch racks)Electrical connections
5.2.TROVIS 6442 (rack-mounting unit for 19inch racks)
The device has two plug connectors, style F (DIN 41612). The signal lines are assigned to one
of these two connectors, whereas the power supply lines are assigned to the other one, meaning
these lines are installed separately (see Fig. 9 and Fig. 10 ).
Binary inputs
Switching contact External switching voltage
d
4
2
6
8
d
10
z
16
d
4
2
6
8
d
10
z
16
bi1
bi2
bi3
+
Binary output 3 Serial interface RS-485
d
30
+
32
–
bo3
d
26
28
R(B)
R(A)
For 2-wire bus terminals
d 22 and d 24
24
T(A)
22
T(B)
bi1
2)
–
–
+
bi2
dd
18
00
+
16
Continuous control outputs Switching output Analog output
d
14 16
1)
Y1
Y2
18
–
z
810
+
L1
12
d
z
16
18
–
+
–
Ao 1
–
bi3
12
1)
Power supply Binary outputs
z
24
N
d
6
6
FE
Fig. 9 ⋅ Terminal assignment of TROVIS 6442
24
N
1)
Limit relay
zd
28
30
bo1
32
z
32
bo2
d
24 26 28
G1G2L
1)
z
20 22 24
Electrical connectionsTROVIS 6442 (rack-mounting unit for 19inch racks)
Inputs
Input
board 1 (IB 1)
Input
4W
board 2
(IB 2)
3W
Ai 1
z
–
mA
–
+
0...1000
28 26
+
V
+
32 30
–
2-wire transmitter 2-wire transmitter
z
24
Ai 2
20
22
+
–
mA
–
V
+
–
+
–
mA
–
V
18
Ai 3
z
24
14
–
+
+
–
–
–
mA
mA
12
V
V
10
+
+
+
+
Ai 4
z
6
–
–
0...1000
–
mA
–
4
2
+
+
0%
+
+
V
Input
board 3
(IB 3)
Input
board 4
(IB 4)
With reference
junction sensor
(item no.
1070-8472)
2W
4W
3W
2W
1
Ri
Ri
Pt 100
Pt 100
–
mV source
34
2
7
–
+
–
2-wire transmitter 2-wire transmitter
Pt 100
Ri
+
8
+
–
2-wire transmitter
+
–
mA
–
+
+
V
+
–
2-wire transmitter
2-wi re transmit te r
0...1000
–
–
0...1000
+
–
–
0...1000
+
0%
+
mA
+
V
0%
–
+
mA
+
V
0%
–
Fig. 10 ⋅ Terminal assignment of TROVIS 6442 (continued)
25
Balancing the line resistance for the connection of Pt 100 sensorsElectrical connections
5.3.Balancing the line resistance for the connection of Pt 100 sensors
When Pt 100 sensors are connected to the control station in a two-wire circuit, the line
resistance is to be balanced to 10 Ω at the external resistor Rj in order to avoid measuring
errors:
1.Short-circuit the line at the Pt 100 sensor or potentiometer.
2.Switch the resistor R
in the line.
j
3.Measure the resistance in the total circuit, using a suitable ohmmeter.
4.Adjust the resistor R
until the line resistance is 10 Ω.
j
In three-wire circuits, the line resistance must not be balanced. Zero and span, however, should
be checked and re-adjusted if necessary.
In four-wire circuits, balancing the line resistance is also not necessary.
5.4.Wiring technique with regard to electromagnetic compatibility
All input, output and data lines have to be run in shielded cables for reasons of electromagnetic
compatibility (EMC).
The power supply lines, as well as the protective conductors and the functional earthing line
(FE) are to be connected separately from each controller to the corresponding multi-terminal
bus bar.
With 19inch racks, a conductive connection between the functional earthing line and the rack
has to be made.
The shielded cables are to be grounded at one end (see Fig. 11 and Fig. 12 ).
26
Electrical connectionsWiring technique with regard to electromagnetic compatibility
L
N
PE
FE
L
N
PE
Controller 1 Controller n
Fig. 11 ⋅ Electrical connections for panel-mounting units
FE
N
L
PE
Cu-flex. lead
≥ 1.5 mm
Cu-flex. lead
≥ 2.5 mm
Cu-flex. lead
≥ 10 mm
2
2
2
FE
d12
d18
z2
z4
d6
z6
d18
2
1
FE
d12
d18
z2
z4
z6
d6
d18
2
1
Controller 1 Controller n
1Plug connector
Signal lines
2Plug connector
Control lines
Cu-flex. lead
≥ 1.5 mm
Cu-flex. lead
≥ 2.5 mm
Cu-flex lead
≥ 10 mm
2
2
2
L
N
PE
Fig. 12 ⋅ Electrical connections for 19inch rack-mounting units
27
Process display and control panel elementsOperation
6.Operation
This section describes how to operate the process control stations directly on the control panel.
Unfold the last page of this manual to obtain a better understanding of this description!
The process control stations are designed according to a three-level, logic operating structure:
1) OPERATING level, 2) PARAMETER level and 3) CONFIGURATION level. These levels are
described in sections 6.2. to 6.13. Depending on the selected level (mode), the visual displays
on the LCD panel and the keys assume different functions.
6.1.Process display and control panel elements
The process control station is operated via eight front-panel keys. The front panel also contains
a clear display field, which shows different variables and symbols, depending on the selected
operating level. Note that some parameters available in the PARAMETER and ADAPTATION
PARAMETER level can be a combination of several variables and symbols.
All process display and control panel elements are listed and explained on the last two pages
of this manual. Optional error messages are described in Appendix B .
6.2.OPERATING level
This is the standard operating level of the process control station (control mode). In this level,
the control station operates according to the pre-set control mode and the defined parameters.
The values of the set point (reference variable) (3) and the controlled variable (8) are
numerically indicated on the display panel. The control deviation (error) (7) and the output
variable (14) are represented as a percentage by means of bar graphs. In addition, a LED (19)
indicates whether the control station is in the AUTOMATIC or MANUAL mode. If the F key is
pressed, the numerical value of the output variable appears in the upper line of the display field
(3).
The OPERATING level allows the operator to modify the value of the internal set point (reference
variable), abort the restart condition option after a start-up procedure or a power supply failure
has occurred, or open the cascade when the controller is in the follow-up control mode. The
output variable can be modified manually when having changed over the process control
station to the MANUAL mode. These functions are described in the following sections.
All other levels can be accessed from the OPERATING level.
28
OperationOPERATING level
6.2.1.Modifying the internal set point (reference variable)
In the OPERATING level, the internal set point WIN can be modified by pressing the C or D key,
provided that these keys have not been disabled in the CONFIGURATION level (C59-2 or
C59-4). Pressing the respective key briefly modifies the last digit of the indicated number by
one. The key must be held down to further advance the number. In this case, the displayed value
changes more quickly. While this modification is made, W
display. W
be configured to display other values than W
disappears after approximately 3 s. Note that the digital display field (3) can also
IN
(see configuration block C4).
IN
Pressing the C key increases the set point (reference variable).
Pressing the D key decreases the set point (reference variable).
3
16
is additionally indicated on the
IN
7
8
19
14
Fig. 13 ⋅ Display of the set point (reference variable) in the OPERATING level
3 Set point (reference variable)
7 Control deviation (error)
8 Controlled variable
14 Manipulated variable display
16 Indicator "internal set point valid"
19 AUTOMATIC mode
29
OPERATING levelOperation
6.2.2.Power supply failure
Configuration block C 43 (restart condition) defines the behaviour of the process control station
after switching on the power supply in the start-up phase or after detecting a power supply
failure (> approx. 1 s). This restart condition determines the operating mode, the set point
(reference variable) and the output variable for output Y1 or Y2.
If one of the restart conditions C43-1 to C43-6 is set, it is necessary to confirm the setting by
pressing the F key in order to return to the normal control mode. In both cases, the digital
displays for the set point and the controlled variable flash until the F key is pressed. The settings
C43-5 and C43-6 cause the process control station to remain in the MANUAL mode, even when
the F key is pressed. This is indicated by the symbol in (19).
The settings C43-7 to C43-12 must not be confirmed in order to return to the normal control
mode. The process control station automatically operates in the control mode according to the
restart conditions implemented with configuration block C 43.
The following table is a short summary of the optional restart conditions.
In MANUAL mode, the connected control valve can be manually moved to the desired position,
using the G and H keys, provided that these keys have not been disabled in the configuration
mode (C59-2 or C59-4). The corresponding key must be pressed until the desired output
variable is adjusted. The bar graph (13) indicates the change in the output variable. If the F key
is pressed, the numerical value of the output variable is also displayed in the digital display
field (2).
Bumpless change-over from MANUAL to AUTOMATIC mode and vice versa is carried out via
the MANUAL/AUTOMATIC key (E).
Pressing the G key increases the output variable.
Pressing the H key decreases the output variable.
30
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