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L:\Bedienanleitungen\SOREL\DR3\DR3_2003englissh_040203_mb.p65
These instructions must be read before setting into operation!
2. Installation of the DR 3 controller
2.1 Wall installation
Simple wall installation of the device base by two-point attachment
by means of attachment screws (4x6) and wall plugs (M6).
3. Temperature sensors with PT1000 sensors
Correct installation and proper placement of the sensors is one
critical factor for the overall function of the system.
Care must be taken that during installation the temperature
sensors are actually installed in the area to be measured and
that the sensor cables, if possible, run inside tube heat insulation
on a length of approx. 20 cm measured from the measuring
point and consequently are protected against cooling. This in
particular applies for the collector sensor.
4. Setting into operation
Safety note: When working on the controller and the connected
consumers all poles of the mains voltage must be switched off
first, as residual currents flow through the electronic wiring of
the devices.
Caution: The controller under no circumstances replace safety
devices. Measures such as protection against frost, scalding,
overpressure etc. must be provided on the installation side, if
necessary. Plugging the main module onto the wall base (with
no voltage applied!).
After switching on the main voltage, the controller is operable.
Procedure of the parametrisation for the specialist:
1. Poss. changing language (see 10.4)
2. Selecting the control programme (see 7.)
3. Adapting the settings (see 8.1-8.14)
4. Poss. activating the solar protect. funct. (see 9.1)
5. Poss. activating the freeze protect. funct. (see 9.2)
6. Poss. determining the rotational speed stages for R1
(see 10.1)
7. Poss. parametrisation of storage priority (see 10.2)
8. Poss. activating the start help function (see 10.3)
9. Functiontest in manual operating (see 11.)
10. Checking the temperature display (see 12.)
11. Poss. locking the setting menus (see 14.)
Error messages like e.g. due to defect sensors will be displayed
by the red LED flashing. In addition, the fault is clearly displayed
in the menu Service values.
In case of an error, the service values can be taken down to
make a telediagnosis by phone possible for the specialist.
5. Notes on failures
Before opening the controller turn off main voltage!
The controller is protected with a 2AT fine-wire fuse. This fuse
can be checked and replaced, if necessary, after switching off
the power and detaching the plug-in module from the wall base
and removing the rear panel. The function of the temperature
sensors can be checked with a resistance measuring device as
per the table. If a needed sensor is faulty, the controller deactivates
the affected function.
6. Specifications
Base unit: plug-in case
Dimensions: 112 x 52 x 106 (W x H x D)
Systemof protection: IP40 / DIN 40050 CE
Operating voltage: 230 V +/- 10% / 50-60 Hz
Power consumption: approx. 2 VA
Switched power: 400VA (for relay R1 min. 20VA max. 120VA)
Fuse: 2AT
Ambient temperature:0 to 40°C
Display: LCD 1 x 16 alphanum. characters
Measuring range: -40°C ... 230°C
Sensors: PT1000 degree-accuracy acc.to DIN
EN60751
2.2 Electrical connection
The installation must only be carried out by a qualified specialist
according to the VDE regulations.
Caution: Placement of the sensors and the accompanying relay
outputs for each user is to be taken from the fields of application
1-14 on page 3.
The base plate is divided into a safe voltage side and a mains
voltage side by a seperation bar.
The mains voltage live lines are inserted into the right half of the
base and attached with the cable strain reliefs included, if
necessary. The sensor / extra-low voltage lines are to be inserted
into the left half of the connection base.
The protective conductors of the mains supply and the connected
consumers must be connected using the 3-pole grounding
terminal strip inside the right-hand side of the base!
Then the wires must be connected according to terminal
assignment in the following order:
Left of the base: Sensor connection terminal (5V DC)
1/2 Temperature sensor „S1“ -any polarity
3/4 Temperature sensor „S2“ -any polarity
3/5 Temperature sensor „S3“ -any polarity
Right of the base: Mains connection terminal (230V AC 50Hz)
8 Relay output „R1“ (Caution: speed regulated)
9 Neutral conductor N of the consumer at relays R1 und R2
10 Neutral conductor N of the mains supply
11 Phase conductor L of the mains supply
12 Relay output „R2“
All PE protective conductors must be connected at the 3-pole
grounding terminal strip.
Note: The R1 relay output is suitable for the control of standard
pumps (20-120VA) whose speed can then be controlled via the
controller. Due to the controller’s internal wiring, valves, contactors
or other consumers with low power consumptions must not be
operated using this output. (Even in resting state, there will still
flow residual currents at the electric relay output R1.)
2.3 Cable installation
To avoid interfering pulses (e.g. due to induction) the temperature
sensor and interface cables must be run seperately from the
mains cables. For the extra-low voltage cables the safety
regulations of VDE 0100 part 410 for protective low voltage must
be observed.
If required, the temperature sensors’ cables can be extended up
to approx. 50 m, e.g. using 3 x 1.5 NYM cables, without affecting
the measuring accuracy. Special care must be taken that the
connection of the extensions does not show any contact
transition.
Temperatur-Sensoren
2AT
Netz
230V~
50-60Hz
Typ: DR3
S3
S1
12345 78
S2 9 10 11 12
LNNR1
PT1000 PT1000 PT1000
R2
Relais
Anschluß
lt. Anleitung
PE
*
*
1100
Temperature-Resistance table for Pt1000 sensors
T/°C 0 10 20 30 40 50 60 70 80 90 100
R/Ω 1000 1039 1077 1116 1155 1194 1232 1270 1308 1347 1385
10m sensor cable 2x0,752 = approx. 0,1°C temperature messuring error
2

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