Siemens RWF40 User Manual
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
2/56 CC1B7865E February 10, 2000 Landis & Staefa Division
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
Landis & Staefa Division CC1B7865E February 10, 2000 3/56
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
4/56 CC1B7865E February 10, 2000 Landis & Staefa Division
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
Landis & Staefa Division CC1B7865E February 10, 2000 5/56
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
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.
Landis & Staefa Division CC1B7865E February 10, 2000 7/56
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
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
Landis & Staefa Division CC1B7865E February 10, 2000 9/56
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.
10/56 CC1B7865E February 10, 2000 Landis & Staefa Division
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.
Landis & Staefa Division CC1B7865E February 10, 2000 11/56
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
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
Landis & Staefa Division CC1B7865E February 10, 2000 13/56
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
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
+
-
+
-
Landis & Staefa Division CC1B7865E February 10, 2000 15/56
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
+
-
16/56 CC1B7865E February 10, 2000 Landis & Staefa Division
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
Landis & Staefa Division CC1B7865E February 10, 2000 17/56
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