Page 1
RWF40...
Compact Universal Controller
optimized for temperature and pressure control through the control of modulating or multi-stage burners
User Manual
The RWF40... controller and this User Manual are intended for use by OEMs which integrate the controller into
their products!
Siemens Building Technologies
CC1B7865E
February 10, 2000
Landis & Staefa Division
Page 2
2/56 CC1B7865E February 10, 2000 Landis & Staefa Division
Page 3
Contents
1.
1.1
1.2
1.3
1.3.1
1.3.2
1.3.3
2.
2.1
3.
3.1
3.2
3.3
3.4
3.5
3.6
Introduction ..........................................................................................6
General notes .................................................................................................................6
Description .....................................................................................................................6
Typographical conventions...........................................................................................7
Warning symbols .............................................................................................................7
Notification symbols .........................................................................................................7
Presentation.....................................................................................................................7
Type of unit........................................................................................... 8
Type field ........................................................................................................................8
Installation ............................................................................................9
Installation site and climatic conditions ......................................................................9
Dimensions.....................................................................................................................9
Side-by-side mounting.................................................................................................10
Mounting in a panel cutout..........................................................................................10
Cleaning the front panel ..............................................................................................11
Removing the controller module ................................................................................11
4.
4.1
4.2
4.3
4.4
5.
5.1
5.2
5.2.1
5.2.2
5.2.3
5.2.4
5.3
5.4
5.4.1
5.4.2
5.4.3
5.4.4
5.5
5.5.1
5.6
5.7
Electrical connections ....................................................................... 12
Installation notes..........................................................................................................12
Block diagram ..............................................................................................................13
Assignment of terminals .............................................................................................14
Galvanic separation .....................................................................................................17
Operating modes................................................................................18
Low-fire operation........................................................................................................18
High-fire operation .......................................................................................................18
Modulating burner, 3-position output..............................................................................18
Modulating burner, modulating output............................................................................19
Two-stage burner, 3-position output ..............................................................................19
Two-stage burner, modulating output ............................................................................20
Safety shutdown ..........................................................................................................20
Pre-defined setpoint ....................................................................................................20
Setpoint changeover «SP1 / SP2», analog setpoint shift ..............................................21
Setpoint changeover «SP1» / external setpoint.............................................................22
Setpoint «SP1», analog / binary setpoint shift ...............................................................23
External setpoint, binary setpoint shift ...........................................................................24
Weather-dependent setpoint shift ..............................................................................25
Heating curve slope .......................................................................................................26
Response threshold «Q».............................................................................................27
Cold start of the plant ..................................................................................................28
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Page 4
6.
Operation ............................................................................................29
6.1
6.1.1
6.2
6.2.1
6.2.2
6.2.3
6.2.4
6.2.5
6.3
6.3.1
6.4
6.4.1
7.
8.
8.1
8.2
8.3
8.3.1
8.3.2
8.3.3
8.3.4
8.3.5
8.3.6
8.3.7
8.3.8
8.3.9
8.3.10
Basic display................................................................................................................ 30
Meaning of the display and buttons............................................................................... 30
User level......................................................................................................................31
Changing the setpoints.................................................................................................. 31
Manual operation of a modulating burner...................................................................... 33
Manual operation of a two-stage burner........................................................................ 33
Start self-setting ............................................................................................................ 34
Display of the software version and unit of actual value ............................................... 34
Parameter level............................................................................................................ 35
Enter parameters........................................................................................................... 35
Configuration level ...................................................................................................... 35
Changing the configuration code................................................................................... 35
Parameter settings .............................................................................36
Configuration......................................................................................38
C111
C112
C113
SCL
SCH
SCL2
SCH2
SPL
SPH
OFF1
OFF2
OFF3
dF1
inputs............................................................................................................ 38
limit comparator, controller type, setpoint «SP1», locking ..................... 40
unit address, dimensional unit, out-of-range............................................ 44
scaling of standard signal range start, analog input 1 ................................... 45
scaling of standard signal range end, analog input 1.................................... 45
scaling of standard signal range start, analog input 2 ................................... 45
scaling of standard signal range end, analog input 2.................................... 46
lower setpoint limit......................................................................................... 46
upper setpoint limit ........................................................................................ 46
actual value correction for analog input 1 ..................................................... 46
actual value correction for analog input 2 ..................................................... 46
actual value correction for analog input 3 ..................................................... 46
2nd order digital filter for analog input 1 ......................................................... 46
9.
9.1
9.2
10.
10.1
Self-setting function...........................................................................47
Self-setting function in high-fire operation ............................................................... 47
Checking the controller parameters .......................................................................... 49
What to do if........................................................................................50
...numbers are flashing on the display ...................................................................... 50
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11.
Technical data ....................................................................................51
11.1
11.1.1
11.1.2
11.1.3
11.1.4
11.1.5
11.2
11.2.1
11.2.2
11.2.3
11.2.4
11.2.5
11.2.6
11.3
11.3.1
11.3.2
11.3.3
12.
12.1
12.2
12.3
Inputs ............................................................................................................................51
Analog input 1 (actual value) .........................................................................................51
Analog input 2 (external setpoint, setpoint shift) ............................................................51
Analog input 3 (outside temperature).............................................................................52
Binary input «D1»...........................................................................................................52
Binary input «D2»...........................................................................................................52
Outputs .........................................................................................................................52
Output 1 (release of burner)...........................................................................................52
Output 2, 3 (3-position output) .......................................................................................52
Output 4 (limit comparator) ............................................................................................52
Output 5, modulating output (option)..............................................................................53
Transducer supply..........................................................................................................53
Interface RS-485 (optional)............................................................................................53
General ratings.............................................................................................................53
Measured value accuracy ..............................................................................................54
Measured value circuit monitoring .................................................................................54
Environmental conditions...............................................................................................54
Current settings..................................................................................55
Process data.................................................................................................................55
Parameter level.............................................................................................................55
Configuration level.......................................................................................................56
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Page 6
1.1 General notes
)
*
1. Introduction
Please read this User Manual before starting up the controller. Keep the Manual in a
place that is accessible to all users at all times. Please help us improve the Manual.
Your suggestions will be welcome.
All necessary settings and, where required, settings inside the unit are described in this
User Manual, for controller software version 126.01.01.
1.2 Description
Use
Ö
Section 6.2.5
Should any difficulties arise during commissioning, you are asked not to carry out any
unauthorized manipulations on the unit. You could endanger your rights under the unit
warranty! Please contact us in such a case.
When returning modules, assemblies or components to Landis & Staefa, the regulations
of DIN EN 100 015 «Protection of electrostatically sensitive devices» must be observed.
Use only the appropriate
Please note that we cannot accept any liability for damage caused by ESD.
ESD = electrostatic discharge
The RWF40... is used primarily for controlling temperature or pressure in oil- or gas-fired
heating plants. It is a compact 3-position controller without position feedback that acts
on the burner. An external switch can be used to change it over to a 2-position controller
for the control of two-stage burners. The built-in thermostat function switches the burner
on and off. An adjustable response threshold is used to switch to a higher burner output
(high-fire operation).
«Display software version and dimensional unit»
ESD
packaging for transport.
Control
Options
A shift controller controls the temperature or pressure. Minimum and maximum limits for
the setpoint can be set. A self-setting function is available as a standard feature.
The plug-in controller module measures 96 x 48 x 127.5 mm and is especially suited for
mounting in control panels. The controller incorporates two 4-digit 7-segment displays
for the actual value (red) and setpoint (green). A limit comparator is also provided and
its switching behavior can be set on the configuration level.
A selection can be made between eight different limit comparator functions.
An RS-485 interface is used for integration into a data network. Output 5 can be used as
a modulating output for modulating or 2-stage operation.
All connections are made via screw terminals at the rear of the unit.
6/56 CC1B7865E February 10, 2000 Landis & Staefa Division
Page 7
1.3 Typographical conventions
1. Introduction
1.3.1 Warning symbols
Danger
Caution
*
Caution
1.3.2 Notification symbols
Note
)
Ö
abc¹
.
Reference
Footnote
The signs for
conditions:
This symbol is used where there may be a
disregarded or not strictly followed!
This symbol is used where there may be
instructions are disregarded or not strictly followed!
This symbol is used if
sensitive components.
This symbol is used to draw your
This symbol refers to
Footnotes are
parts:
markings
1) The
2) The
and a period
footnote text
Danger
additional information
comments, referring to specific parts of the text.
in the text are arranged as continuous superscript numbers
is placed at the bottom of the page and starts with a number
Caution
and
pre-cautions must be taken
are used in this Manual under the following
danger to personnel
damage to equipment or data
special attention
in other Manuals, chapters or sections.
if the instructions are
if the
in handling electrostatically
to a remark.
They consist of two
▲
Action
Buttons
Button
combinations
✱✱✱✱
1.3.3 Presentation
PGM
EXIT
+
This symbol indicates that
The individual steps are indicated by an asterisk, e.g.:
Press the ▲ button
✱✱✱✱
Buttons are shown in a box. Either symbols or text are possible. If a button has multiple
assignments, the text shown is always the one that corresponds to the function
currently used.
The representation of buttons combined with a plus sign means that first the
EXIT
button must be pressed and held down and then the other button.
a required action
is described.
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Page 8
2.1 Type field
2. Type of unit
Location
Types
Factory setting
The type field is glued onto the housing. The type designation consists of operating
voltage and type reference of the unit.
Type of unit Description
RWF40.000A97
RWF40.010A97 ¹·
RWF40.001A97
RWF40.011A97 ¹·
RWF40.002A97
RWF40.012A97 ¹·
¹· Packing variants
The supply voltage connected must match the voltage given on the type field.
Basic version with 3-position output
With additional modulating output
With additional modulating output and
RS-485 interface
*
The measured value range and the analog inputs are set at the factory.
Chapter 8 «Configuration»
Ö
Accessories
Adapter frame ARG40
which shall be converted to the RWF40... .
Bracket ARG41
DIN 46277.
Dummy cover AVA10.200/109
for plants where the pre-decessor model RWF32... was used,
for mounting the RWF40... on 35 mm DIN rails conforming to
for covering a control panel cutout for the RWF40...
8/56 CC1B7865E February 10, 2000 Landis & Staefa Division
Page 9
3.1 Installation site and climatic conditions
The installation site should be as free as possible from vibrations, dust and corrosive
−
media
The controller should be installed as far away as possible from sources of
−
electromagnetic fields, such as frequency converters or high-voltage ignition
transformers
Relative humidity: < 95 % (non-condensing)
Ambient temperature range: -20...+50 °C
Storage temperature range: -40...+70 °C
3.2 Dimensions
48
3. Installation
PGM
43,5
RWF40
EXIT
K6
96
15,5
91,5
112
Panel cutout to DIN 43700
+0,6
45
127,5
+0,8
92
7865m01e/0200
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3.3 Side-by-side
If several controllers are mounted side-by-side or above one another in a control panel,
the minimum spacing must be observed, namely 30.5 mm vertically and 10.5 mm
horizontally.
3.4 Mounting in a panel cutout
Place the seal provided onto the controller housing.
✱✱✱✱
3. Installation
The unit must be installed with the seal
the housing!
*
Insert the controller from the front into the panel cutout.
✱✱✱✱
so that no water or oil can penetrate
7865z08/0200
✱✱✱✱
At the rear of the panel, push the fixing elements into the guide slots from the side
or top. The flat faces of the fixing elements must lie against the housing.
✱✱✱✱
Place the fixing elements against the rear of the panel, and tighten them evenly with
a screwdriver.
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3.5. Cleaning the front panel
The front panel can be cleaned with normal washing and rinsing agents or detergents.
not
It is
*
cleaning with high-pressure cleaners!
3.6 Removing the controller module
The controller module can be removed from the housing for servicing.
The rules of DIN EN 100 015 «Protection of electrostatically sensitive devices »
must be adhered to for internal work on the controller!
accepted for damage caused by electrostatic discharge.
3. Installation
resistant to corrosive acids, caustic solutions and abrasive cleaners, or
No liability
will be
7865z09/0200
✱✱✱✱
Press the ribbed surfaces together (at top and bottom) and pull out the controller
module.
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Page 12
4.1 Installation notes
4. Electrical connections
Safety regulations
Fusing
Interference suppression
The choice of cable, the installation and the electrical connections of the controller
−
must conform to the regulations of VDE 0100 «Regulations for the installation of
power circuits with nominal voltages below AC 1000 V», or appropriate local
regulations
The electrical connections may only be carried out by qualified personnel
−
If contact with live parts is possible while working on the unit, the controller must be
−
disconnected from the power supply at both poles
An internal current-limiting resistor interrupts the supply voltage in the event of a short-
−
circuit. The external fusing should not be rated above 1 A (slow). The output relays
must be fused for a maximum of 2 A to prevent contact welding in the event of a shortcircuit in the load circuit
Section 11.2 «Outputs»
Ö
No other loads may be connected to the supply terminals of the controller
−
The electromagnetic compatibility and interference suppression levels conform to
−
standards and regulations listed under «Technical data»
Chapter 11 «Technical data»
Ö
Input, output and supply cables should be routed separately, not parallel to one
−
another
Arrange sensor and interface cables as twisted and screened cables, and do not run
−
them close to power cables or components. Ground the screening to the controller
one end
Earth the «TE» terminal of the controller to the protective earth. This cable must have
−
a cross-sectional area that is at least as large as that of the supply cables. Earthing
cables must be wired in a star configuration to a common earthing point connected to
the protective earth of the supply. Earthing cables may not be looped from one
controller to another
to the «TE» terminal
at
Incorrect use
The unit is not suitable for installation in areas with an explosion hazard
−
Incorrect settings on the controller (setpoint, data of parameter and configuration
−
levels) can affect the proper functioning of the following process or lead to damage.
Safety devices that are independent of the controller, such as overpressure relief
valves or temperature limiters / monitors should therefore always be provided, and
only be capable of adjustment by qualified personnel. Please observe the appropriate
safety regulations. Since self-setting cannot be expected to handle all possible control
loops, the stability of the actual value that is produced should be checked
The analog inputs of the controller may not exceed a maximum voltage of AC 30 V or
−
DC 50 V against «TE»
Section 4.3 «Galvanic separation»
Ö
12/56 CC1B7865E February 10, 2000 Landis & Staefa Division
Page 13
4.2 Block diagram
4. Electrical connections
3 analog inputs
Input 1:
Actual value
for Pt100, Ni100, Pt1000,
Ni1000 thermocouples or
standard signals
Input 2:
External setpoint,
setpoint shift
for resistance 0 - 1 k ,
or linearised
standard signals
Input 3:
Outside temperature
for Pt1000, Ni1000
2 binary inputs
For potential-free
contacts
Input 1:
Operating mode
changeover
Input 2:
Setpoint shift / changeover
Ω
RWF40...
Release of burner
Output 1:
- Relay (N.O. contact)
3-position output
Output 2:
-Relay (reg. unit opens)
Output 3:
- Relay (reg. unit closes)
Limit comparator
Output 4:
- Relay (N.O. contact)
Transducer supply
DC 24 V, 30 mA
(short-circuit-proof)
Modulating output (optional)
Output 5:
Modulating output,
DC 0...10 V, DC 0...20 mA,
DC 4...20 mA
Operating voltage
AC 100 ...240 V,
±10 %, 48...63 Hz
7865f01e/0200
Serial interface (optional)
RS-485
MOD bus protocol
Baud rate 9600
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Page 14
4.3 Assignment of terminals
4. Electrical connections
Electrical connections may only be made
by qualified personnel!
X1+
X1-
G-
G+
GND
D1
D2
I1
M1
U1
G1+
XB6
M6
XU6
B9
M9
7865z07/1199
CB
CG
CA
TE
L1
N
Y2
Q
Y1
Q13
Q14
Q63
Q64
Outputs Display LED Terminal no. Connection diagram
Relay 1: release of burner
Contact protection:
Q14 pole
Q14
P
Varistor S07K275
S
Relay 2: regulating unit opens
Contact protection:
▲
Q13 N.O. contact
Y1 N.O. contact
Q13
7865a11/1199
Y1
S
RC unit
P
Q
Relay 3: regulating unit closes
Q common pole
▼
Contact protection:
RC unit
P
S
P
Relay 4: limit comparator
Contact protection:
Y2 N.O. contact
K6 Q64 pole
Y2
7865a16/1099
Q64
Varistor S07K275
S
Modulating output (optional)
Q63 N.O. contact
X1+
Q63
7865a15/1099
X1+
+
DC 0 (4)...20 mA, 0 (2)...10 V
X1-
X1-
7865a17/1099
-
14/56 CC1B7865E February 10, 2000 Landis & Staefa Division
Page 15
4. Electrical connections
Analog input 1 (actual value) Terminals Connection diagram
Thermocouple I1
I1
+
M1
Resistance thermometer in 3-wire circuit M1
G1+
I1
Resistance thermometer in 2-wire circuit, line
compensation through offset correction (OFF1)
Current input
DC 0...20 mA, 4...20 mA
Voltage input
DC 0...1 V, 0...10 V
M1
G1+
I1
M1
U1
M1
M1
7865a03/1099
M1
G1+
I1
7865a04/1099
M1
G1+
7865a05/1099
I1
M1
7865a06/1099
U1
M1
7865a07/1099
-
ϑ
ϑ
+
-
+
-
Analog input 2 (setpoint and setpoint shift) Terminals Connection diagram
Resistance potentiometer
Offset correction (OFF2)
Current input
DC 0..20 mA, 4...20 mA
Voltage input
DC 0...1 V, 0...10 V
Analog input 3 (outside temperature) Terminals Connection diagram
Resistance thermometer in 2-wire circuit, line
compensation through offset correction (OFF3)
XB6 start
M6 slider
M6 end
XB6
M6
XU6
M6
B9
XB6
M6
XB6
M6
7865a09/1099
XU6
M6
7865a10/1099
B9
A
S
E
7865a08/1099
ϑ
M9
M9
7865a13/1099
+
-
+
-
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Page 16
4. Electrical connections
Binary inputs Terminals Connection diagram
Operating mode selector
Section 5.2 «High-fire operation»
Ö
D1
D1
Setpoint shift / changeover
Sections 5.4.1...5.4.4
Ö
D2
D2
GND
Common ground
Operating voltage, interface Terminals Connection diagram
Operating voltage
AC 100...240 V ±10 %, 48...63 Hz
Technical earth
Operating voltage for transducer G+
Serial interface
RS-485
GND
L1 line
N neutral
TE
G-
CA
CB
CG
7865a12/1099
L1
N
TE
7865a18/1099
G+
DC 24 V / 30 mA
G-
7865a14/1099
RxD / TxD+
RxD / TxD-
GND
+
-
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Page 17
4.4 Galvanic separation
4. Electrical connections
The diagram shows the maximum potential differences that may exist between the
function modules in the controller.
3 analog inputs
Input 1:
Actual value
for Pt100, Ni100,
Pt1000, Ni1000
thermocouples or
standard signals
Input 2:
External setpoint,
setpoint shift
for resistance 0...1 k ,
or standard signals
Input 3:
Outside temperature
for Pt1000, Ni1000
2 binary inputs
for potential-free contacts
operating mode
D1:
changeover
setpoint shift /
D2:
changeover
Ω
Limit comparator
Output 4:
- Relay (N.O. contact)
Release of burner
Output 1:
- Relay (N.O. contact)
3-position output
Output 2:
- Relay (reg. unit opens)
Output 3:
- Relay (reg. unit closes)
L1, N:
L1, N:
Transducer supply
DC 24 V , 30 mA
(short-circuit proof)
Modulating output
(optional)
Output 5:
Modulating output,
DC 0...10 V,
DC 0...20 mA, 4...20 mA
Serial interface
RS-485 (optional)
MOD bus protocol
baud rate 9600
Technical earth TE
Operating voltage
AC 100...240 V 10 %,
48...63 Hz
L1, N:
±
Max. insulation voltages:
DC 50 V
AC 400 V
AC 4000 V
7865f07e/1299
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Page 18
5.1 Low-fire operation
5. Operating modes
Low-fire operation means that only small amounts of heat are drawn from the boiler. A twoposition controller maintains the setpoint, switching the burner on and off like a thermostat.
Thermostat function
5.2 High-fire operation
This control mode is therefore also known as
thermostat function
. An adjustable
switching differential ensures that the switching frequency of the burner can be selected to
reduce wear.
Modulating and 2-stage operation:
HYS3
W
HYS1
7865w03/1099
Actual value between «HYS1» and
«HYS3»
High-fire operation means that large amounts of heat are drawn from the boiler, so that
the burner is on all the time. If the heating load during the thermostat operation rises to a
level where the actual value begins to fall below the switch-on threshold «HYS1», the
controller does not immediately switch over to a higher burner output, but first makes a
dynamic test of the control deviation and only switches to the higher output when an
adjustable threshold «Q» is exceeded (A).
Section 5.6 «Response threshold Q»
Ö
Operating mode
changeover
In high-fire operation, depending on the application, the burner can be fired in
−
modulating
operation. The binary input «D1» can be used to switch between modulating and twostage operation
When the contact is open: modulating burner operation
−
When the contact is closed: two-stage burner operation
−
5.2.1 Modulating burner, 3-position output
In diagram area (1), the thermostat function is active. The modulating mode of burner
operation is shown in area (2). In high-fire operation, a 3-position controller acts on an
actuator through relay 2 (open) and relay 3 (close).
HYS3
db
W
HYS1
In area (3), the actual value exceeds the upper switch-off threshold «HYS3» and the
controller switches off the burner (B). The controller only starts low-fire operation when
the level falls below the switch-on threshold «HYS1» again. If «Q» is exceeded, the
controller switches to high-fire operation (A).
two-stage
or
(1)
operation, with a larger amount of fuel than in low-fire
B
q
A
(2)
7865w07/1099
(3)
q
A
Section 5.6 «Response threshold Q»
Ö
18/56 CC1B7865E February 10, 2000 Landis & Staefa Division
Page 19
5.2.2 Modulating burner, modulating output
In diagram area (1), the thermostat function is active.
In area (2), the controller is controlling to the adjusted setpoint.
5. Operating modes
HYS3
W
HYS1
100%
X1
0%
The positioning signal is delivered as a standard signal via the modulating output.
)
Ö
The modulating controller must be available and configured in the unit (optional).
Section 8.2 «C112 Limit comparator, controller type, setpoint «SP1», locking»
5.2.3 Two-stage burner, 3-position output
In diagram area (1), the thermostat function is active.
In area (2), a
relay 3 (close) by switching it into the circuit at the switch-on threshold «HYS1» / and
out of circuit at the switch-off threshold «HYS2».
q
(1)
two-position controller
B
A
7865w05/1 099
q
A
(2)
acts on the second stage, via relay 2 (open) and
HYS3
HYS2
W
HYS1
I
II
q
A
(2)(1)
B
7865w06/1099
q
A
In area (3), the actual value exceeds the upper switch-off threshold «HYS3» and the
controller shuts down the burner (B). The controller only starts low-fire operation when
the level falls below the switch-on level «HYS1» again. If «Q» is exceeded, the
controller switches to high-fire operation (A).
Section 5.6 «Response threshold Q»
Ö
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Page 20
5.2.4 Two-stage burner, modulating output
In this case, a standard binary signal switches the second stage into circuit with analog
output «X1» on reaching the switch-on threshold «HYS1» and switches it out of circuit
at the lower switch-off threshold «HYS2».
5. Operating modes
5.3 Safety shutdown
Functions
X1
HYS3
HYS2
W
HYS1
100%
0%
(1)
B
q
A
(2)
7865w04/1099
q
A
The modulating controller must be available and configured in the unit
)
Ö
(optional).
Section 8.2 «C112 Limit comparator, controller type, setpoint «SP1», locking»
In the event of a sensor failure, the controller cannot monitor the actual value of the
boiler temperature (analog input 1). A safety shutdown is automatically carried out to
guard against overheating.
This also applies to the acquisition of the external setpoint at analog input 2.
Burner off
−
3-position output for closing the regulating unit
−
Self-setting is ended
−
Manual operation is ended
−
5.4 Pre-defined setpoint
The setpoint is pre-selected with the buttons or the interface within pre-set limits.
It is possible to shift the setpoint, by either an analog or a binary signal, to influence it
according to the weather or to change it with an external contact.
20/56 CC1B7865E February 10, 2000 Landis & Staefa Division
Page 21
5.4.1 Setpoint changeover «SP1 / SP2», analog setpoint shift
)
and
C111
described in chapter 8
C112
are
5. Operating modes
C111: XX1X ... XX3X
Outside sensor
Heating curve slope H
Setting: 0.0 ... 4.0
Weather-dependent
setpoint shift:
C112: XX0X
SP1 via buttons
C111: XXX2
Section 5.4.4 "External setpoint, binary
setpoint shift"
Setpoint SP2
SP2 via buttons
C111: X6XX ... XAXX
Analog setpoint shift
No Yes
C111: XXX1
Setpoint changeover
D2 open
D2 closed
C112: XX1X
SP1 via outside sensor
C111: XXX0
No function
+
The setpoints SP1 and SP2 are
entered at the user level.
Section 6.2 "User level"
Connection of binary input D2
Section 4.2 "Assignment of terminals"
7865f05e/1199
SPH
SPL
Active setpoint
Landis & Staefa Division CC1B7865E February 10, 2000 21/56
Page 22
5.4.2 Setpoint changeover «SP1» / external setpoint
and
)
C111
described in chapter 8
C112
5. Operating modes
C111: XX1X ... XX3X
Outside sensor
are
Heating curve slope H
Setting: 0.0 ... 4.0
Weather-dependent
setpoint shift:
C112: XX0X
SP1 via buttons
C111: X1XX ... X5XX
External setpoint
C111: XXX0
No function
No Yes
C111: XXX1
Setpoint changeover
D2 closed
C112: XX1X
SP1 from outside sensor
C111: XXX2
Section 5.4.4 "External setpoint, binary
setpoint shift"
D2 open
Setpoint SP1 is entered at the
user level
Section 6.2 "User level"
Connection of binary input D2
Section 4.2 "Assignment of terminals"
7865f03e/1199
SPH
SPL
Active setpoint
22/56 CC1B7865E February 10, 2000 Landis & Staefa Division
Page 23
5.4.3 Setpoint «SP1», analog / binary setpoint shift
and
)
C111
described in chapter 8
C112
5. Operating modes
C111: XX1X ... XX3X
Outside sensor
are
Heating curve slope H
Setting: 0.0 ... 4.0
Weather-dependent
setpoint shift:
C112: XX0X
SP1 via buttons
C111: X6XX ... XAXX
Analog setpoint shift
C111: XXX1
Sections 5.4.1 and 5.4.2
"Setpoint changeover ..."
D2 closed
dSP
No Yes
+
C111: XXX2
Binary setpoint shift
+
C112: XX1X
SP1 via outside sensor
C111: XXX0
No function
0,0
D2 open
The values dSP and SP1 are entered
at the user level
Section 6.2 "User level"
Connection of binary input D2
Section 4.2 "Assignment of terminals"
SPH
SPL
Active setpoint
7865f04e/1199
Landis & Staefa Division CC1B7865E February 10, 2000 23/56
Page 24
5.4.4 External setpoint, binary setpoint shift
5. Operating modes
)
and
C111
described in chapter 8
C112
are
C111: XXX1
Sections 5.4.1 and 5.4.2
"Setpoint changeover ..."
D2 closed
dSP
0
D2 open
The values dSP and SP1 are entered at
the user level
Section 6.2 "User level"
C111: X1XX ... X5XX
External setpoint
C111: XXX2
Binary setpoint shift
+
C111: XXX0
No function
SPH
SPL
Connection of binary input D2
Section 4.2 "Assignment of terminals"
7865f02e/1199
Active setpoint
24/56 CC1B7865E February 10, 2000 Landis & Staefa Division
Page 25
5.5 Weather-dependent setpoint shift
The RWF40... can be configured in such a way that if a Landis & Staefa Ni1000 outside
sensor (e.g. QAC22) is connected, a weather-dependent setpoint shift is implemented.
The minimum and maximum setpoint values can be set by the lower setpoint limit
«SPL» and the upper setpoint limit «SPH». Parameter «P» can be used to apply a
parallel displacement to the heating curve.
Each RWF40... must have its own separate outside sensor connected (no
*
parallel connection)!
5. Operating modes
Parallel displacement of
the heating curve
Chapter 7 «Parameter settings»
Ö
160
140
120
100
SPH
80
60
Boiler temperature setpoint (°C)
SPL
40
20
4
3.8
3.6
3.4
3.2
3
2.8
2.6
2.4
2.2
2
1.8
1.6
1.4
1.2
1
0.8
0.6
0.4
0.2
Heating curve slope
0
20
Landis & Staefa Division CC1B7865E February 10, 2000 25/56
15
17.5
10
12.5
5
7.5
Outside temperature (°C)
0
2.5
-2.5
-5
-10
-7.5
-12.5
-15
-20
-17.5
7865d02e/1199
Page 26
5.5.1 Heating curve slope
5. Operating modes
Slope «H» of the heating curve can be used to adjust the setpoint in response to the
outside temperature, as shown in the diagram. The common origin of the heating curves
is set at (20 °C / 20 °C). The effective range of the weather-adjusted setpoint is
restricted by the setpoint limits «
Setpoint (°C)
SPH»
H larger
and
«SPL»
.
HYS3
SPH
H smaller
HYS1
SPL
+20
+20
7865d01e/1199
«HYS1»
already described, they act with the set shift relative to the weather-controlled setpoint.
Ö
Ö
is the switch-on point for the burner, and «
Section 5.2.1 «Modulating burner, 3-position output»
Section 5.2.2 «Modulating burner, modulating output»
0
-1010
Outside temperature (°C)
HYS3»
is the switch-off point. As
26/56 CC1B7865E February 10, 2000 Landis & Staefa Division
Page 27
5.6 Response threshold «Q»
The response threshold «Q» defines how long and how low the actual value can drop
before the system switches over to high-fire operation.
An internal mathematical calculation using an integration function determines the sum of
all the areas Q
the control deviation (x-w) falls below the value for the switching threshold «HYS1». If
the actual value increases, integration is stopped.
If «Q
level), this causes the second stage of the burner to be switched on or - in the case of a
3-position controller / modulating controller – the regulating unit to open.
If the actual boiler temperature reaches the required setpoint, Q
HYS1
5. Operating modes
= Q1 + Q2 + Q3 , as shown in the diagram. This only takes place when
eff
» exceeds the pre-set response threshold «Q» (can be adjusted at the parameter
eff
is set to 0 .
eff
Temperature (°C)
x
w
Q
7865d19e/1199
1
Q
2
Q
3
Q = 0
eff
Actual value monitoring ensures that the switching frequency is kept low in the
transitional range from low- to high-fire operation in order to reduce wear.
t
Landis & Staefa Division CC1B7865E February 10, 2000 27/56
Page 28
5.7 Cold start of the plant
When a heating system is switched off for a longer period of time, the actual value will
fall.
To achieve a faster control response, the controller starts immediately in high-fire
operation as soon as the control deviation (x-w) has dropped below a certain limit value.
This limit is calculated as follows:
Limit value = 2 * (HYS1-HYS3)
5. Operating modes
Example
Operating mode: modulating, 3-position output
HYS1 = -3 K
HYS3 = +5 K
w = 60 °C
Limit value = 2 * (-3 - 5) = 2 * (-8) = -16 K
At an actual value below 44 °C, the heating up procedure starts immediately in high-fire
operation, instead of in thermostat mode.
°C
HYS3
W
X
HYS1
2 x (HYS1 - HYS3)
db
t
7865d20/10 99
28/56 CC1B7865E February 10, 2000 Landis & Staefa Division
Page 29
6. Operation
Assignment of levels
All levels can be accessed from the basic display via the
diagram.
The upper actual value display (red) indicates the actual value and the parameter values
for the various levels.
The setpoint and the parameters are indicated in the lower setpoint display (green).
PGM
button, as shown in the
BASIC DISPLAY
1.
Min. 2 s
USER
LEVEL
Min. 2 s
PARAMETER LEVEL
Min. 2 s
CONFIGURATION
LEVEL
7865f08e/1299
1.
or time-out (approx. 30 s)
1.
1)
After using «PGM» to step through all the parameters of a level, an automatic return
occurs after the last parameter has been confirmed.
Landis & Staefa Division CC1B7865E February 10, 2000 29/56
Page 30
6.1 Basic display
The diagram shows the RWF40... after switching on power. This condition is called the
basic display. The actual value and the currently active setpoint are shown here. Manual
operation, self-setting, the user, parameter and configuration levels can be activated
from here.
6.1.1 Meaning of the display and buttons
Actual value
display (red)
6. Operation
Release of burner
Regulating unit CLOSE / 1st stage
Regulating unit OPEN / 2nd stage
2-stage operation
503
Setpoint display
(green)
Decrease value
PGM button
639
Manual operation
Limit comparator
Increase value
EXIT button
7865p02e/0200
30/56 CC1B7865E February 10, 2000 Landis & Staefa Division
Page 31
6. Operation
Initialization
Manual operation
Self-setting function
Actual value display
flashes
2-stage operation
Time-out
All displays are lit up; the setpoint display flashes for about 10 seconds after switching
on power.
The actual value is indicated on the upper display. The LED for manual operation is on.
Depending on the operating mode and the type of controller, the setpoint or the level of
the manual actuator position is shown on the setpoint display (green).
Section 6.2.2 «Manual operation of a modulating burner»
Ö
The actual value is shown on the actual value display (red) and the text «
on the setpoint display (green).
Section 9.1 «Self-setting function in high-fire operation»
Ö
Chapter 10 «What to do if...»
Ö
Section 5.2 «High-fire operation»
Ö
If there is no action by the operator, the controller returns automatically to the
)
basic display after about 30 seconds.
tunE»
flashes
6.2 User level
6.2.1 Changing the
setpoints
This level is started from the basic display. Setpoints «SP1», «SP2 / dSP» can be
altered, and the analog inputs «E2» (external setpoint / setpoint shift) and «E3» (outside
temperature) can be displayed.
To alter «SP1», «SP2» or «dSP»:
Change to the user level with
✱✱✱✱
Alter the setpoint «SP1» with ▼ and
✱✱✱✱
Change to setpoint «SP2» or «dSP» with
✱✱✱✱
Alter the setpoint «SP2» or «dSP» with ▼ and
✱✱✱✱
Return to the basic display with
✱✱✱✱
After 2 seconds, the value that is set will automatically be adopted. The value
)
can only change within the permitted value range
PGM
▲
PGM
▲
EXIT
or automatically by time-out after about 30 s
Landis & Staefa Division CC1B7865E February 10, 2000 31/56
Page 32
Basic display
User level
(Display depends on
code 111)
6. Operation
60.3
65.0
PGM
EXIT
65.0
SP 1
PGM
Depending on the
configuration of
binary input 2:
- dSP
-Sp2
Measurement of the
outside temperature
via analog input 3
Measurement of the
external setpoint or
a setpoint shift
via analog input 2
7865f06e/1199
EXIT
70.0
SP 2
EXIT
10.0
50.0
SP.E
PGM
tA
PGM
PGM
or
10.0
dSP
32/56 CC1B7865E February 10, 2000 Landis & Staefa Division
Page 33
6.2.2 Manual operation, modulating burner
6. Operation
3-position controller
Modulating controller
Thermostat mode
Press
✱✱✱✱
The LED above the hand symbol lights up.
✱✱✱✱
Relay 2 opens the regulating unit as long as ▲ is pressed.
Relay 3 closes the regulating unit as long as ▼ is pressed.
The LEDs for the regulating units indicate if «OPEN» or «CLOSE» is activated.
Change the regulating unit’s position with ▲ and
✱✱✱✱
The modulating output delivers the regulating unit’s position that was entered.
Return to automatic operation by pressing
✱✱✱✱
)
Manual operation can only be activated if the thermostat function has set relay 1 to
active
If the thermostat function sets relay 1 to
operation is terminated.
EXIT
for 5 s
Change the regulating unit’s position with ▲ and
When manual operation is activated, the regulating unit’s position is set to 0
until another entry with the buttons is made.
.
inactive
EXIT
▼
▼
for 5 s
during manual operation, manual
6.2.3 Manual operation, two-stage burner
Press
✱✱✱✱
Press ▲ briefly
✱✱✱✱
Relay 2 is active, relay 3 is inactive
−
Analog output (optional) delivers DC 10 V
−
The regulating unit opens
Or press ▼ briefly
✱✱✱✱
Relay 2 is inactive, relay 3 is active
−
Analog output (optional) delivers DC 0 V
−
The regulating unit closes
Return to automatic operation by pressing
✱✱✱✱
)
EXIT
If the thermostat function sets relay 1 to
manual operation is terminated.
for 5 s
EXIT
for 5 s
inactive
during manual operation,
Landis & Staefa Division CC1B7865E February 10, 2000 33/56
Page 34
6.2.4 Start self-setting
6. Operation
Start self-setting with
✱✱✱✱
Cancel with
✱✱✱✱
PGM
7865z10/1199
When «
Accept the parameters that have been determined by pressing ▲ (press the button
✱✱✱✱
for at least 2 s!)
▲
tunE
» stops flashing, self-setting has stopped.
It is not possible to start «
PGM
+
▼
)
6.2.5 Display of the software version and unit of actual value
tunE
» in manual operation or thermostat operation.
PGM
PGM
+
+
▲
Press
✱✱✱✱
Available units:
°C, °F and % (for standard signals)
7865z11/1199
34/56 CC1B7865E February 10, 2000 Landis & Staefa Division
Page 35
6.3 Parameter level
6. Operation
The parameters involved in the adaptation of the controller to the controlled system are
set here after the system has been started up.
PGM
Within the level, you can proceed to the next parameter by pressing
.
6.3.1 Enter parameters
6.4 Configuration level
)
The entry and alteration of parameters is made through a continuous alteration of the
value. The longer you keep the button pressed, the faster the rate of change becomes.
✱✱✱✱
✱✱✱✱
✱✱✱✱
✱✱✱✱
)
Ö
The settings made here are those required for commissioning a specific installation and
therefore rarely need to be altered, such as acquisition of measured value or type of
controller.
Within the level, you can proceed to the next parameter by pressing
The display of the individual parameters depends on the type of controller.
Increase value by pressing
Reduce value by pressing
Accept entry by pressing
or
Cancel entry by pressing
After 2 seconds, the value that is set will automatically be accepted. The value
can only change within the permitted value range.
Chapter 7 «Parameter settings»
▲
▼
PGM
EXIT
PGM
.
6.4.1 Changing the configuration code
Select position by pressing ▼ (position flashes!)
✱✱✱✱
Alter value by pressing
✱✱✱✱
Accept code by pressing
✱✱✱✱
or
Cancel entry by pressing
✱✱✱✱
Chapter 8 «Configuration»
Ö
▲
PGM
EXIT
Landis & Staefa Division CC1B7865E February 10, 2000 35/56
Page 36
7. Parameter settings
The parameter is shown on the lower setpoint display (green) and the value on the
upper / actual value display (red).
10
AL
7865p06/0200
Parameter Display Value range Factory
setting
Limit value for limit
comparator
Switching differential
for limit comparator
1)
Proportional band
Derivative time
Integral action time
Contact spacing
(dead band)
1)
1)
1)
AL
HYSt
Pb.1
dt
rt
db
-1999...+9999 digit 0
0...999.9 digit 1 Switching differential at the edges for
0.1...999.9 digit 10 Affects the P-response of the controller
0...9999 s 80 Affects the D-response of the controller.
0...9999 s 350 Affects the I-response of the controller.
0...999.9 digit 1 For 3-position output
Remarks
Output 4
HYSt
7865d10e/0300
Chapter 8.2 «
Ö
comparator, controller type, setpoint
«SP1», locking»
the limit comparators
Chapter 8.2 «
Ö
comparator, controller type, setpoint
«SP1», locking»
Within dt = 0, the controller has no Dresponse.
For modulating controllers, dt = rt / 4 or
0 must be entered.
With rt = 0, the controller has no Iresponse
Y
100%
AL
db
w
C112
C112
Measured value
– limit
– limit
W
-100%
7865d11/1099
1)
This parameter is affected by the setting of the decimal place.
36/56 CC1B7865E February 10, 2000 Landis & Staefa Division
X
Page 37
7. Parameter settings
The parameter is shown on the lower / setpoint display (green) and the value on the
upper / actual value display (red).
10
AL
7865p06/0200
Parameter
Actuator running
time
Switch-on threshold
for burner stage II
Switch-off threshold
stage II
Upper switch-off
threshold
Response threshold
Heating curve slope
Parallel
displacement
1)
1)
1)
1)
Display
tt
HYS1
HYS2
HYS3
q
H
P
1)
This parameter is affected by the setting of the decimal place.
Value range Factory
setting
10...3000 s 15 s Utilized running time of the valve for
0...-199.9 digit -5
0...HYS3 digit 3
0...999.9 digit 5
0...999.9 0
0...4 1
-90...+90 0
Remarks
3-position controllers
Section 5.5.1 «Heating curve slope»
Ö
Section 5.2 «High-fire operation»
Ö
Section 5.2 «High-fire operation»
Ö
Section 5.6 «Response threshold
Ö
Q»
Section 5.5.1 «Heating curve slope»
Ö
Section 5.5 «Weather-dependent
Ö
setpoint shift»
Landis & Staefa Division CC1B7865E February 10, 2000 37/56
Page 38
8.1 C111 inputs
0000
C111
Analog input 1
Pt100, 3-wire 0
Pt100, 2-wire 1
Ni100, 3-wire 2
Ni100, 2-wire 3
Pt1000, 3-wire, Landis & Staefa IEC 751 4
Pt1000, 2-wire, Landis & Staefa IEC 751 5
Ni1000, 3-wire, DIN 43760 6
Ni1000, 2-wire, DIN 43760 7
Ni1000, 3-wire, Landis & Staefa 8
Ni1000, 2-wire, Landis & Staefa 9
NiCr-Ni / K A
Cu-CuNi / T b
NiCroSil-NiSil / N C
Fe-CuNi / J d
Standard signal DC 0…20 mA E
Standard signal DC 4…20 mA F
Standard signal DC 0…10 V G
Standard signal DC 0…1 V H
8. Configuration
7865p03/0200
Analog input 2
No function 0
External setpoint, 1 kΩ resistance potentiometer 1
External setpoint, DC 0…20 mA 2
External setpoint, DC 4…20 mA 3
External setpoint, DC 0…10 V 4
External setpoint, DC 0…1 V 5
Analog setpoint shift, 1 kΩ resistance potentiometer 6
Analog setpoint shift, DC 0…20 mA 7
Analog setpoint shift, DC 4…20 mA 8
Analog setpoint shift, DC 0…10 V 9
Analog setpoint shift, DC 0…1 V A
38/56 CC1B7865E February 10, 2000 Landis & Staefa Division
Page 39
8. Configuration
0000
C111
Analog input 3
No function 0
Outside sensor Pt1000, 2-wire, Landis & Staefa IEC 751 1
Outside sensor Ni1000, 2-wire, DIN 43760 2
Outside sensor Ni1000, 2-wire, Landis & Staefa 3
Function of binary input «D2»
7865p03/0200
No function 0
Setpoint changeover 1
Setpoint shift (binary) 2
Factory setting 9 0 3 0
Landis & Staefa Division CC1B7865E February 10, 2000 39/56
Page 40
8. Configuration
0
8.2 C112 limit comparator, controller type, setpoint «SP1», locking
0000
C112
Limit comparator
No function (lk off) 0
lk1, input 1 1
lk2, input 1 2
lk3, input 1 3
lk4, input 1 4
lk5, input 1 5
lk6, input 1 6
lk7, input 1 7
lk8, input 1 8
lk7, input 2 9
lk8, input 2 A
lk7, input 3 b
lk8, input 3 C
7865p04/020
Controller type
3-position controller 0
Modulating controller DC 0…20 mA 1
Modulating controller DC 4…20 mA 2
Modulating controller DC 0...10 V 3
Setpoint «SP1»
«SP1» via buttons 0
«SP1» with outside sensor (analog input 3 must be configured) 1
Locking
No locking 0
Locking of configuration level 1
Locking of parameter level 2
Locking of buttons
Locking of the buttons can be entered only
*
all button operations are locked and can only be enabled again by the manufacturer!
Factory setting 0 0 1 0
once
and adapted with
PGM
. After this,
3
40/56 CC1B7865E February 10, 2000 Landis & Staefa Division
Page 41
8. Configuration
Function Ik1
Function Ik2
Window function:
around the setpoint (w).
Example: w = 80 °C, AL = 5,
Measured value rising: relay «K6» switches on at 76 °C and off at 86 °C.
Measured value falling: relay «K6» switches on at 84 °C and off at 74 °C.
Output 4
relay «K6» is active when the measured value lies within a window
HYSt
= 2
AL
HYSt
7865d10e/0300
As for lk1, but with inverted switching function.
Output 4
w
Measured value
AL
Function Ik3
HYSt
7865d09e/0300
HYSt
= switching differential of the window edges
AL
= interval from setpoint (half the window-width)
Lower limit signaling
Function: relay inactive when measured value < (setpoint – limit value).
Example: w = 80 °C, AL = 10,
Measured value rising: relay «K6» switches on at 71 °C.
Measured value falling: relay «K6» switches off at 69 °C.
Output 4
HYSt
w
= 2
AL
HYSt
Measured value
7865d04e/0300
Landis & Staefa Division CC1B7865E February 10, 2000 41/56
w
Measured value
Page 42
8. Configuration
Function Ik4
Function Ik5
As for lk3, but with inverted switching function.
Output 4
AL
HYSt
7865d03e/0300
HYSt
= switching differential
AL
= interval from setpoint
Chapter 7 «Parameter settings»
Ö
Upper limit signaling
Function: relay inactive when measured value > (setpoint + limit value).
Example: w = 80 °C, AL = 10,
Measured value rising: relay «K6» switches off at 91 °C.
Measured value falling: relay «K6» switches on at 89 °C.
HYSt
w
= 2
Measured value
Function Ik6
Output 4
AL
HYSt
7865d05e/0300
As for lk5, but inverted switching function.
Output 4
w
AL
HYSt
7865d06e/0300
w
Measured value
Measured value
42/56 CC1B7865E February 10, 2000 Landis & Staefa Division
Page 43
8. Configuration
Function Ik7
Function Ik8
The switching point is independent of the controller setpoint; only the limit value «
determines the switching point.
Function: relay is active when measured value > limit value.
Example: AL = 50,
Measured value rising: relay «K6» switches on at 51 °C.
Measured value falling: relay «K6» switches off at 49 °C.
Output 4
HYSt
= 2
HYSt
7865d07e/0300
Measured value
AL
As for lk7, but with inverted switching function.
Output 4
AL»
HYSt
7865d08e/0300
AL
HYSt
= switching differential
AL
= limit value
Chapter 7 «Parameter settings»
Ö
Measured value
Landis & Staefa Division CC1B7865E February 10, 2000 43/56
Page 44
8. Configuration
8.3 C113 instrument address, dimensional unit, out-of-range
The setting for the decimal place affects actual
*
value-dependent parameters!
0000
C113
Unit address
Address 0 0 0
Address 1 01
... ...
Address 99 99
7865p05/0200
*
Decimal places, dimensional unit
No decimal place, °C 0
One decimal place, °C 1
No decimal place, °F 2
One decimal place, °F 3
Signal for out-of-range
Limit comparators OFF 0
Limit comparators ON 1
Factory setting 0 1 1 0
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Page 45
8.3.1 «SCL» scaling of standard signal range start, analog input 1
8. Configuration
Example
8.3.2 «SCH» scaling of standard signal range end, analog input 1
Example
SCL = 20; SCH = 100 °C
0 mA
(start) corresponds to a measured value of 20 °C
0 mA 20 mA
0 °C 20 °C 100 °C
Value range: -1999...+9999 digit
Factory setting: 0 digit
SCH = 80; SCL = 0 °C
20 mA
(end) corresponds to a measured value of 80 °C
0 mA 20 mA
0 °C 80 °C 100 °C
Value range: -1999...+9999 digit
Factory setting: 100 digit
8.3.3 «SCL2» scaling of standard signal range start, analog input 2
Example
SCL2 = 20:
0 mA
corresponds to a measured value of 20 °C, as already described
Value range: -1999...+9999 digit
Factory setting: 0 digit
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Page 46
8.3.4 «SCH2» scaling of standard signal range end, analog input 2
8. Configuration
Example
8.3.5 «SPL» lower setpoint limit
8.3.6 «SPH» upper setpoint limit
8.3.7 «OFF1» actual value correction for analog input 1
SCH2 = 80:
20 mA
Value range: -1999...+9999 digit
Factory setting: 100 digit
The controller restricts the setpoints to the value that is set.
Value range: -1999...+9999 digit
Factory setting: 0 digit
The controller restricts the setpoints to the value that is set.
Value range: -1999...+9999 digit
Factory setting: 100 digit
corresponds to a measured value of 80 °C, as already described
The actual value correction can be used for correction of the measured value upwards
or downwards by a specific amount. It is also used for line compensation when
resistance thermometers are connected in a 2-wire circuit.
Value range: -1999...+9999 digit
Factory setting: 0 digit
Example
8.3.8 «OFF2» actual value correction for analog input 2
8.3.9 «OFF3» actual value correction for analog input 3
Measured value Offset Displayed value
294.7 +0.3 295
295.3 -0.3 295
Value range: -1999...+9999 digit
Factory setting: 0 digit
Value range: -1999...+9999 digit
Factory setting: 0 digit
nd
8.3.10 «dF1» 2
46/56 CC1B7865E February 10, 2000 Landis & Staefa Division
order digital filter for analog input 1
Value range for filter time constant: 0...100 s
Factory setting: 1 s
Page 47
9.1 Self-setting function in high-fire operation
tunE»
«
is only possible in high-fire operation, in the «modulating burner» mode.
)
9. Self-setting function
The self-setting function «
the controller. In the «modulating» mode of operation, «
controlled system to steps of the positioning signal according to a special procedure. A
complex control algorithm uses the response of the controlled system (actual value) to
calculate and store the control parameters for a PID or PI controller (set dt = 0!). The
tunE»
«
procedure can be repeated as often as required.
tunE»
is a pure software function unit that is integrated into
tunE»
tests the response of the
Self-setting Start
PID controller
settings
Identification of
the controlled
system
W
Controller
Controlled
system
X
7865f09e/1199
Y
Two procedures
tunE»
The «
depending on the dynamic state of the actual value and the difference from the setpoint
at the start. «
If there is a
activated, a switching line is established around which the controlled variable performs
forced oscillations during the self-setting procedure. The switching line is set at such a
level that the actual value should not exceed the setpoint.
function uses two different methods that are automatically selected
tunE»
can be started from within any dynamic actual value sequence.
large difference between actual value and setpoint
when «
tunE»
is
x
Start
w
Switching
level
7865d12e/1199
With a
controlled system has stabilized, a forced oscillation is performed around the setpoint.
small deviation
between setpoint and actual value, for instance when the
t
Landis & Staefa Division CC1B7865E February 10, 2000 47/56
Page 48
9. Self-setting function
x
Start
w
Conditions
7865d13/1099
The controlled system data which are recorded for the forced oscillations are used to
calculate the controller parameters «rt, dt, Pb.1» and a filter time constant for actual
value filtering that is optimized for this controlled system.
High-fire operation in the «modulating burner» mode.
−
The thermostat function (relay 1) must be constantly activated, otherwise «
−
be cancelled and no optimized controller parameters will be adapted
The above mentioned actual value oscillations during self-setting may not exceed the
−
upper threshold of the thermostat function (increase if necessary, and lower the
setpoint)
t
tunE»
will
48/56 CC1B7865E February 10, 2000 Landis & Staefa Division
Page 49
9.2 Checking the controller parameters
The optimum adjustment of the controller to the controlled system can be checked by
recording a startup sequence with the control loop closed. The following diagrams
indicate possible incorrect adjustments, and their correction.
9. Self-setting function
Example
w
x
7865d17/1099
x
rd
The response to a setpoint change is shown here for a 3
PID controller. The method used for adjusting the controller parameters can, however,
also be applied to other controlled systems.
A favourable value for «dt» is «rt» / 4.
«PB too small» «PB too large»
order controlled system for a
x
w
t
«rt, dt» too small «rt, dt» too large
7865d15/1099
x
t
w
7865d16/1099
x
w
7865d18/1099
w
t
Optimum adjustment
7865d14/1099
t
t
Landis & Staefa Division CC1B7865E February 10, 2000 49/56
Page 50
10. What to do, if ...
10.1 ...numbers are flashing on the display
This is an indication that a measured value is not being acquired correctly.
The detection of measured value range crossings depends on the type of
)
Ö
Display Description Cause / controller behavior / remedy
1999
60.0
7865p08/0200
1999
tA
sensor used.
Section 11.3.2 «Measured value circuit monitoring»
Actual value display
(red) shows «1999»
flashing.
Setpoint display shows
the setpoint.
When analog input 3 is
configured for outside
temperature (C111) and
the measured value is
called up, the actual
value display (red)
shows «1999» flashing.
*
*
Overrange or underrange on analog
input 1.
The actual value is not being measured.
Controller initiates lockout.
Section 5.3 «Safety shutdown»
Ö
The limit comparator responds to analog
input 1 according to the configuration
(C113).
Check the electrical connections for
✱✱✱✱
open-circuit of sensor
Overrange or underrange on analog
input 3.
The outside temperature is not being
measured!
The weather-dependent setpoint is
inactive!
Check the electrical connections for
✱✱✱✱
open-circuit of sensors
7865p10/0200
1999
SP.E
7865p09/0200
53.2
1999
When analog input 2 is
configured (C111) and
the measured value is
called up, the process
value display (red)
shows «1999» flashing.
Actual value display
(red) shows «XXXXXX».
Setpoint display (green)
shows «1999» flashing.
*
*
Overrange or underrange on analog
input 2.
The external setpoint is not being
measured. Controller initiates lockout
Section 5.3 «Safety shutdown»
Ö
Check the electrical connections for
✱✱✱✱
open-circuit of sensors
Overrange or underrange on analog
input 2.
The setpoint shift is not being measured.
Controller initiates lockout
Section 5.3 «Safety shutdown»
Ö
Check the electrical connections for
✱✱✱✱
open-circuit of sensor
7865p 07/0200
50/56 CC1B7865E February 10, 2000 Landis & Staefa Division
Page 51
11.1 Inputs
11.1.1 Analog input 1 (actual value)
For resistance thermometers, thermocouples or standard signals with 2nd order digital
filter (configurable).
11. Technical data
Resistance thermometers
Thermocouples
Standard signals
In 2-wire or 3-wire circuit:
Type Measured value range
Pt100, Pt1000 -200...+850 °C
Ni100, Ni1000 DIN 43760 -60...+250 °C
Ni1000 from Landis & Staefa -50...+160 °C
Line resistance
Line compensation
Not required for a 3-wire circuit.
When using a resistance thermometer in a 2-wire circuit, line compensation can only be
made by means of the offset correction.
Type Measured value range
Fe-CuNi «J» -200...+1000 °C
NiCr-Ni «K» -200...+1372 °C
Cu-CuNi «T» -200...+400 °C
NiCrSi-NiSi «N» -100...+1300 °C
Cold-junction temperature
Signal Internal resistance Ri
DC 0...10 V Ri = 2 M
DC 0...1 V Ri = 2 M
DC 0...20 mA
DC 4...20 mA
: < 30
Ω
: internal
Voltage drop
Ue = < 1 V
∆
Ue = < 1 V
∆
Ue
∆∆∆∆
Ω
Ω
Sampling time: 210 ms
11.1.2 Analog input 2 (external setpoint, setpoint shift)
Resistance measured value 0…1 kΩ standard signals without linearization.
Potentiometer
Standard signals
With 2-wire circuit
R = 0…1 k
Signal Internal resistance Ri
DC 0...10 V Ri = 2 M
DC 0...20 mA
DC 4...20 mA
Sampling time: 630 ms
Ω
Voltage drop
Ue = 1 V
∆
Ue = 1 V
∆
Ue
∆∆∆∆
Ω
Landis & Staefa Division CC1B7865E February 10, 2000 51/56
Page 52
11.1.3 Analog input 3 (outside temperature)
For resistance thermometers in a 2-wire circuit, with fixed filter time constants
(21 h 18 min for the weather-dependent setpoint enable)
11. Technical data
Resistance thermometer
Type Measured value range
Pt1000 -200...+850 °C
Ni1000 DIN 43760 -60...+250 °C
Ni1000 from Landis & Staefa -50...+160 °C
Sampling time: 6 s
11.1.4 Binary input «D1»
11.1.5 Binary input «D2»
Potential-free contact for operating mode changeover:
Modulating burner, when the contact is open, LED on the front is not lit
−
2-stage burner, when the contact is closed, LED on the front is lit
−
Potential-free contact for the following functions, depending on the configuration:
No function
−
Setpoint shift
−
Setpoint changeover
−
11.2 Outputs
4 relay outputs, 1 modulating analog output (optional) and a transducer supply are
provided as standard.
11.2.1 Output 1 (release of burner)
Relay output (N.O. contact)
Contact rating:
Contact life:
Internal contact protection:
11.2.2 Output 2, 3 (3-position output)
2 relay outputs (N.O. contacts) with a common pole, for regulating unit open / close
Contact rating:
Contact life:
Internal contact protection:
11.2.3 Output 4 (limit comparator)
Relay output (N.O. contact)
Contact rating:
Contact life:
Internal contact protection:
AC 24…240 V, 2 A at p.f. (cos ϕ) > 0.6
> 2 x·10
5
switching cycles at rated load
Varistor S07K275
AC 24…240 V, 2 A at cos ϕ > 0.6
> 2 x·10
5
switching cycles at rated load
RC combination (C = 2.5 nF, R = 100 Ω)
AC 24…240 V, 2 A at cos ϕ > 0.6
> 2 x·10
5
switching cycles at rated load
Varistor S07K275
52/56 CC1B7865E February 10, 2000 Landis & Staefa Division
Page 53
11.2.4 Output 5, modulating output (option)
Continuous output, electrically isolated from the analog inputs:
U < AC 30 V , ∆U < DC 50 V
∆
Standard signals Load, burden
DC 0…10 V (short-circuit-proof) Load = > 500
DC 0…20 mA Burden = < 500
DC 4…20 mA Burden = < 500
11. Technical data
Ω
Ω
Ω
Accuracy:
11.2.5 Transducer supply
DC 24 V, 30 mA (short-circuit-proof)
11.2.6 Interface RS-485 (optional)
Baud rate:
Protocol:
Unit address:
Galvanic separation between supply voltage, analog inputs and outputs.
Section 4.3 «Galvanic separation»
Ö
11.3 General ratings
Weight:
0.25 %, ±50 ppm / K
±
9600
MOD bus
1…99
approx. 430 g
Data backup:
Operating voltage:
Power consumption:
Electrical connection:
Electrical safety:
Case:
EEPROM
AC 100…240 V ±10 %, 48…63 Hz
approx. 5 VA
at the rear, via pug-in screw terminal strips, angled
at 45°
to EN 60730
mounting depth 130 mm
plastic body with rear panel, self-extinguishing
flammability class: UL94 V0
seal between case and control panel
Landis & Staefa Division CC1B7865E February 10, 2000 53/56
Page 54
11.3.1 Measured value accuracy
11. Technical data
Resolution:
Measured value accuracy Ambient temperature error
Resistance thermometer:
0.05 %
≤
Thermocouples:
0.25 %
≤
Standard signals:
0.1 %
≤
The values include the linearization tolerances.
11.3.2 Measured value circuit monitoring
Transducer Probe break Short-circuit
Resistance thermometer X X
Thermocouples X DC 0…10 V - DC 0…20 mA - DC 4…20 mA X X
> 15 bit
50 ppm / K
≤
100 ppm / K
≤
100 ppm / K
≤
- = is
X = is detected, and «–1999» appears on the display
Ö
11.3.3 Environmental conditions
Permissible ambient temperature range:
-20…+50 °C (short-time up to 60 °C)
Permissible storage temperature range:
-40…+70 °C
Climatic conditions:
Relative humidity ≤ 95 %, (non-condensing)
Degree of protection to EN 60529:
Front IP65
Rear IP20
Electromagnetic compatibility (EMC):
To NAMUR recommendation NE 21, EN 50 081 part 1, EN 50 082 part 2
not
detected
Chapter 10 «What to do if...»
54/56 CC1B7865E February 10, 2000 Landis & Staefa Division
Page 55
12.1 Process data
12. Actual settings
Parameter Display Value range Factory
setting
Setpoint 1
Setpoint 2 (option)
Digital setpoint shift (optional)
Outside temperature (optional)
Pre-definition of external setpoint
1)
1)
1)
1)
SP1
SP2
dSP
TA
SP.E
1)
These parameters are affected by the setting for the decimal place.
SPL-SPH 0
SPL-SPH 0
SPL-SPH 0
Section 8.1
Ö
C111
«
Inputs»
SPL-SPH -
-
12.2 Parameter level
Parameter Display Value range Factory
setting
Setting
Setting
Limit value of limit comparator
Switching differential for limit
comparator
Proportional band
Derivative time
Integral action time
Contact spacing
Actuator running time
Switch-on threshold burner /
stage II
Switch-off level stage II
Upper switch-off threshold
1)
1)
1)
1)
1)
1)
1)
HYS1
HYS2
HYS3
AL
HYSt
Pb.1
dt
rt
db
tt
-1999...+9999 digit 0
0...999.9 digit 1
0.1...999.9 digit 10
0...9999 s 80
0...9999 s 350
0...999.9 digit 1
10...3000 s 15 s
0...-199.9 digit -5
0... HYS3 digit 3
0...999.9 digit 5
Response threshold
Heating curve slope
Parallel displacement
Landis & Staefa Division CC1B7865E February 10, 2000 55/56
1).
1)
These parameters are affected by the setting for the decimal place.
q
H
P
0...999.9 0
0...4 1
-90...+90 0
Page 56
12.3 Configuration level
12. Actual settings
Parameter Display Factory
setting
Analog input 1, 2 and 3; setpoint
changeover / shift
Limit comparator; controller type;
setpoint 1; locking
Unit address; decimal place / unit,
signal for out-of-range
Measured value range start
analog input 1
Measured value range
analog input 1
Measured value range
analog input 2
Measured value range
analog input 2
1)
1)
1)
1)
C111
C112
C113
SCL
SCH
SCL2
SCH2
9030
0010
0110
0
100
0
100
Setting
Lower setpoint limit
Upper setpoint limit
Actual value correction,
analog input 1
Actual value correction,
analog input 2
Actual value correction,
analog input 3
Filter time constant for digital filter,
analog input 1
1)
1)
1)
1)
1)
1)
These parameters are affected by the setting for the decimal place.
SPL
SPH
OFF1
OFF2
OFF3
dF1
0
100
0
0
0
1
Siemens Building Technologies AG
Landis & Staefa Division
Berliner Ring 23
D - 76347 Rastatt
Tel. 0049 - 7222 - 598 - 0
Fax. 0049 - 7222 - 53182
2000 Siemens Building Technologies AG
56/56 CC1B7865E February 10, 2000 Landis & Staefa Division
http://www.landisstaefa.com
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