User manual
11. WIRING DIAGRAM.
Attention:
If you don't use T2 temperature sensor,
cause it is unnecessary in your control
system, connect the resistor in place of
the T2 sensor (2-3 terminals) and set the
parameter F83=1.
Otherwise the controller will signal the
sensor failure alarm Alt2.
DC-20D
1
3
2
4
5
11 12 13 14 15 16
OUT1 OUT2
T1,T2: NTC 5kΩ D1: digital input
OUT1: 20A-AC1 (8A-AC3) 250VAC
OUT2: 8A-AC1 (2A-AC3) 250VAC
POWER: 230VAC
Make sure that the electrical parameters of the device correspond to the parameters of the
controller (maximum voltage, current rating, power). If the power of receiver is bigger than output
load-carrying capacity you should use an additional actuactor: contactor and SSR relay.
Connection diagram of the heating device (for example, boiler, heater) and cooling device
(fan, circulation pump).
Heating device
1
2
DC-20D
3
20(8)A 250VAC
T1
N
L
11 12 13
14
15 16
N L
L(phase)
230VAC
N (neutral)
Cooling device
T2
N
L
11. FACTORY SETTINGS.
If you forgot you password to the configuration menu or the controller after a power failure or a
short circuit displays memory error
you can restore default parameter settings:
set
M
Turn off the controller.
Then press buttons
,
at one time and
switch the power supply
on while holding the
buttons. Command:
Displays.
set
M
Command disappears
after 5 seconds and four
horizontal pointers
display. Then release the
buttons and the controller
restores factory settings
and goes into normal
operation mode.
DC-20D
DUAL TEMPERATURE
CONTROLLER
USER MANUAL / WARRANTY
Version 2.0
1. DESCRIPTION.
7. ALARM MESSAGES.
DC-20 there are de facto two temperature CONTROLLERS placed in one casing with
possibility of optional input-output configuration and connecting both controllers. Device has 2
control input and 2 control output, which can work in HEATING and COOLING mode and the
measurement is registered from the T1 or T2 sensor or both sensors at the same time in separate,
differential or medium mode. The following block diagram illustrates the structure:
When alarm activates the indicator
starts to blink and the sound signaller (beep) activates
(when F83=1). According to the occurence controller turns on/off output and the front panel
displays one of the following alarm messages:
T1
CONTROLLER
T2
MEASUREMENT:
MEASUREMENT:
T1 or T2 or
T2-T1 or [T1+T2]/2
T1 or T2 or
T2-T1 or [T1+T2]/2
SETTING 1
SETTING 2
1
CONTROL:
HEATING or
COOLING
OUTPUT 1
OUTPUT 2
2
°C
INPUT1
M
°C
set
OUTPUT1
Heater I
T1
SET1=40°C
M
INPUT2
set
OUTPUT2
OUTPUT1
Heater II
T1
SET2=60°C
Output operation
Outputs active or inactive (see: F53, F54)
Sensor error T1:
OPE - open circuit
SHr - short circuit
Sensor errorT2:
OPE - open circuit
SHr - short circuit
Output inactive
Output inactive
F52 REG1 REG2
It is possible to link 1 and 2 controller in F52 parameter. This is
useful when controllers 1 and 2 control the heating system and one
controller acts as collateral. For example, when the 2 controller
emergency state alarm occurs, the 1 controller turns on circulating
Pump in order to cool down th system or turns off heating device
permanently.
Controller is able to operate both in simple, single or double heating or cooling system as well as in
more complicated applicatioms, for example.
INPUT1
Occurence
Digital input activation
8. CONTROLLERS CONNECTION.
CONTROLLER
CONTROL:
HEATING or
COOLING
Statement
OUTPUT2
Heater
Heater
SET1=60°C
SET2=60°C
T2
0
0
1
1
1
1
2 No connection
9. INSTALLATION.
3
0
0
4
1
0
Be aware of the conditions where the controller operates. Install in a place, where there is not
too high temperature and humidity and no condensation. Should be ventilated in order to
remove the heat.
ATTENTION!
It is not allowed to work with electric cables when the device is energized. You should avoid
crossing wires by using short connections. We recommend securing the source of controller
power supply and temperature sensor input against electrical interference.
10. MOUNTING.
Mounting on a DIN rail (TS35), 50cm width (3 modules).
Stove with two degrees of heaters
Two independent ovens
51
2 temperature sensor: NTC 5k by 25°C
digital input (normally opened or normally closed)
Measuring range:
-50...+150°C
Measuring accuracy:
±0,5°C
Sampling period:
330 ms
Display resolution :
0,1°C in whole range
Setting resolution:
0,1°C in whole range
Display:
LED, 4 digits, 11mm height with graphic icons
Control form:
ON-OFF with hysteresis
Protection class:
Ip20 / II
Power supply:
230VAC ±15% or 12VAC/DC or 24AC/DC , max 3VA
Operation conditions:
-5...60°C; 0...85%RH (non-condensing)
Storage conditions:
-40...85°C; 0...85%RH (non-condensing)
45
67,2
Inputs:
32
89,5
2. SPECIFICATIONS.
2
14
50 (3 mod.)
35
6
50
2000
20
Protection class
IP67
6
3. OUTPUTS CARRYING CAPACITY.
6. GENERAL DESCRIPTION.
6.1. ADJUSTMENT .
Temp.
COOLING
Temp.
6°C
F12=1°C
SET1=90°C
F12=1°C
F12=1°C
Time
OUTPUT1
OUTPUT1
30A 250VAC
105 cycles
20A, 4500W
8A, 1500W, 2HP(2KM)
OUTPUT2
8A 250VAC
105 cycles
8A, 1500W
2A, 400W, 0.5HP(0.5KM)
temperautre sensor number
89°C
Time
Maximum inductive
load (for example. engine):
temperature display
HEATING
F12=1°C
4°C
Maximum resistive
load (for example. Heater):
4. FRONT PANEL.
91°C
SET1=5°C
Relay:
Output:
DC20 maintains SET1 and/or SET2 subject temperature with accuracy(hysteresis), which can be
set in F12 and F22 parameter.
Depending on an application 1 and 2 Controller can work in HEATING or COOLING mode.
After choosing measurement form (F10 and F20 parameters) the controller is able
to operate in many variants, for example as a single heating controller with two settings
or as two separate heating controller or as a differential controller with an additional
alarm threshold at the same time.
The most important parameters and temporal courses.
entry to the parameters menu
-
temperature setting button
set
value increasing button
M
value decreasing button
OUTPUT1
temperature setting signalling SET1
temperature setting signalling SET2
1
1
0
0
Time
Time
OUTPUT1 signalling. LIGHTS: output active; BLINKS: output waits for start-up (see: F17)
OUTPUT2 signalling. LIGHTS: output active; BLINKS: output waits for start-up (see: F27)
emergency states signalling. BLINKS: alarm active
6.2. DIGITAL INPUT.
Controller has D1 digital input, which can be used as an alarm input. Then it can signal
emergency states sound signalling, such as system failure, pressure control, safety t h e r m o s t a t
STB or safety button activation. Connect additional security system contacts to D1 contacts (4-5
terminals). Contacts type: NO (normally opened) or NC (normally closed) is set in F50 parameter.
5. CONTROLLER HANDLING.
5.1. TEMPERATURE SETTING.
M
Thermostat
STB
set
T2
1
2
3
4
5
M
set
Heater
14
15 16
lights up.
Confirm the SET 1 by
set Button.
Diode
lights up.
Fan
M
Power supply
230V~
When protection activates, controller switch on/switch off 1 and 2 OUTPUT (F53 and F54
parameters), turns on the sound signal (parameter F53=1) and the display shows AL.d1.
code. Failure signalling an be maintained, till the alarm reset using the buttons (set the
parameter F50=2 or 4).
5
Diode
Using:
M
set
DC-20D
20(8)A 250VAC
11 12 13
Press set button for
2 sec.
set
or
button set the desired
temperature value
SET1.
Using:
M
set
or
button set the desired
temperature value
SET2.
Confirm the SET2 by
set Button.
Diode
goes off.
Remarks:
–Press M button in any time to cancel the setting
–the setting 1 change can be limited by F13 and F14 parameters
–the setting 2 change can be limited by F23 and F24 parameters
3
5.2. PARAMETERS PROGRAMMING.
M
set
Enter the menu holding
M button for 5 sec. Until
the first parameter F10
displays.
Remarks:
- press M button to cancel the parameter setting
M
set
If the access to the menu is
protected, command:
displays.
Using
,
and set
buttons enter the password
and confirm with set key.
Using:
Using:
M
set
°C
or
choose the parameter
you want to change and
enter with set key.
M
set
or
Set the desired parameter value
and confirm with set key.
Return to the parameters list.
To exit the menu press M key or
wait 30 sec without pressing any
button.
5.3. DESCRIPTION OF THE PARAMETERS..
Others
Controllers connections
and digital input
configuration
Controller 2
Controller 1
Group: Code: Description:
Range:
1...4
F10 CONTROLLER 1 configuration (measurement form ):
1 - measurement from T1 temperature sensor
2 - measurement from T2 temperature sensor
3 - differential measurement (measurements difference from temperature sensors T2-T1)
4 - average measurement (measurements average from two sensors [T1+T2]/2)
F11 Temperature setting value SET1. Range of changes is limited by the F14 and F13 parameters.
F14...F13
F12 Controller 1 hysteresis (temperature control accuracy).
0.1...20.0
F13 Maximum value possible to set by the user.
-50.0...150.0
-50.0...150.0
F14 Minimum value possible to set by the user.
F17 OUTPUT1 minimal down time. It also means the delay time of switching the output after giving power supply.
0.0...99.9
Parameter protects devices, for example engine against too frequent switching in case of power failure.
COOL/HEAT
F18 OUTPUT 1 work mode: COOLING/HEATING
-20.0...+20.0
F19 T1 temperature sensor calibration. This is the value of rescaling the temperature sensor in relation to actually measured temperature.
1...4
F20 CONTROLLER 2 configuration (measurement form ):
1 - measurement from T1 temperature sensor
2 - measurement from T2 temperature sensor
3 - differential measurement (measurements difference from temperature sensors T2-T1)
4 - average measurement (measurements average from two sensors [T1+T2]/2)
F21 Temperature setting value SET1. Range of changes is limited by the F24 and F23 parameters.
F24...F23
F22 Controller 2 hysteresis (temperature control accuracy).
0.1...20.0
F23 Maximum value possible to set by the user.
-50.0...150.0
-50.0...150.0
F24 Minimum value possible to set by the user.
F27 OUTPUT2 minimal down time. It also means the delay time of switching the output after giving power supply.
0.0...99.9
Parameter protects devices, for example engine against too frequent switching in case of power failure.
COOL/HEAT
F28 OUTPUT 2 work mode: COOLING/HEATING
-20.0...+20.0
F29 T1 temperature sensor calibration. This is the value of rescaling the temperature sensor in relation to actually measured temperature.
F50 Alarm digital input D1: 0 – unused; 1 – alarm when closed; 2 – alarm when closed with maintaince of alarm signalling, 3 – alarm when opened,
0...4
4 – alarm when opened with maintance of alarm signalling
0...3
F51 Sound signalling: 0 – buzzer muted; 1 – buzzer on, when OUTPUT1 active; 2 – buzzer on, when OUTPUT2 active; 3 - buzzer on,
when both OUTPUT active and when D1 input active
0...2
F52 Connection method of 1 and 2 CONTROLLER : 0 - OUTPUT 1 off, when OUTPUT 2 on; 1 - OUTPUT 1 on, when OUTPUT 2 on;
2 - no connection, 3 - OUTPUT 1 off, when OUTPUT 2 off, 4 - OUTPUT 1 on, when OUTPUT 2 off
0, 1
F53 Connection method of OUTPUT1 to digital input D1 :
0 - OUTPUT 1 off, when D1 input activated; 1 - OUTPUT 1 on, when D1 input activated; 2 - no connection
0, 1
F54 Connection method of OUTPUT2 to digital input D1 :
0 - OUTPUT 2 off, when D1 input activated; 1 - OUTPUT 2 on, when D1 input activated; 2 - no connection
F80 Password to access the configuration menu. OFF – password protection inactive, F80 = 0000 – no password
0000...9999
F82 Display resolution: 0=0,1 °C; 1=1°C
0, 1
F83 Display mode: 0 - measurement from two sensors displayed alternately every 3 seconds; 1 - measurement from T1 temp sensor; 2 - measurement from T2 temp sensor
0...2
F98 Reserved.
F99 Controller test. Disconnect output device to make the test! Otherwise the system can crash.
End Exit.
4
Default:
1
Units:
-
50.0
1.0
150.0
-50.0
0.0
°C
°C
°C
°C
Minutes
HEAT
0.0
1
Minutes
°C
-
0.0
1.0
150.0
-50.0
0.0
°C
°C
°C
°C
Minutes
COOL
0.0
Minutes
°C
0
-
0
-
2
-
0
-
0
-
OFF
0
0
-
-
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