Velleman K641LX User manual

K6002
ILLUSTRATED ASSEMBLY MANUAL H6002IP-1
Total solder points: 169 + 99 + 67
Difficulty level: beginner 1 2 3 4 5 advanced
Unlikeanormalthermostat,thiskit
hastwooutputs,onefor"high"alarm
andonefor"low"alarm.
TEMPERATURE CONTROLLER
Specifications
 Accuracy: +/- 0.1°C.
 Relay outputs: 5A/220VAC change-over contact.
 Read out from -40°C to +150°C (together with K6001).
 24 hour clock (50Hz mains frequency accuracy).
 Alarm setting from -50°C to +154°C.
 Power supply: 9VAC/300mA

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Unlike a normal thermostat this Kit has two outputs, one for a "high" alarm e.g. to switch on a fan or the air
conditioning (or to control the temperature of the freezer), and one for a "low" alarm e.g. to switch on the
central heating. Both "alarms" are adjustable separately, each with its own hysteresis.
For measuring the temperature you need kit K6001 (1 piece supplied with the kit), which will convert the
temperature into a pulse width (a sort of alternating voltage). This has as an advantage that the sensor can
be installed at a distance, without the measuring being disturbed by external noise.
This allows you, by using a switch, to monitor several sensors with only one controller (e.g. temperature
outside, in the living-room, in the cellar).
Although the controller is more suited for professional applications, it can also be used as an ordinary
thermostat. Especially for this group of users a clock has been built in, which at choice is visible either
constantly or alternately with the temperature.
Thanks to the menu structure, adjusting the controller is very simple. In order to keep the housing or
mounting simple and compact, a system consisting of three modules, together with a front panel has been
opted for.

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Features & Specifications
Features:
 High and low alarm output with LED indication.
 Temperature read out in degrees Celsius.
 Hysteresis adjustable per alarm.
 Separated opto-coupler sensor input (for K6001).
Specifications:
 Accuracy: +/- 0.1°C.
 Relay outputs: 5A/220VAC change-over contact.
 Read out from -40°C to +150°C (together with K6001).
 24 hour clock (50Hz mains frequency accuracy).
 Alarm setting from -50°C to +154°C.
 Power supply: 9VAC/300mA

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Assembly hints
1. Assembly (Skipping this can lead to troubles ! )
Ok, so we have your attention. These hints will help you to make this project successful. Read them carefully.
1.1 Make sure you have the right tools:
• A good quality soldering iron (25-40W) with a small tip.
• Wipe it often on a wet sponge or cloth, to keep it clean; then apply solder to the tip, to give it a wet look. This is called ‘thinning’ and will
protect the tip, and enables you to make good connections. When solder rolls off the tip, it needs cleaning.
• Thin raisin-core solder. Do not use any flux or grease.
• A diagonal cutter to trim excess wires. To avoid injury when cutting excess leads, hold the lead so they
cannot fly towards the eyes.
• Needle nose pliers, for bending leads, or to hold components in place.
• Small blade and Phillips screwdrivers. A basic range is fine.
For some projects, a basic multi-meter is required, or might be handy
1.2 Assembly Hints :
⇒Make sure the skill level matches your experience, to avoid disappointments.
⇒Follow the instructions carefully. Read and understand the entire step before you perform each operation.
⇒Perform the assembly in the correct order as stated in this manual
⇒Position all parts on the PCB (Printed Circuit Board) as shown on the drawings.
⇒Values on the circuit diagram are subject to changes.
⇒Values in this assembly guide are correct*
⇒Use the check-boxes to mark your progress.
⇒Please read the included information on safety and customer service
* Typographical inaccuracies excluded. Always look for possible last minute manual updates, indicated as ‘NOTE’ on a separate leaflet.
0.000

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Assembly hints
1.3 Soldering Hints :
1- Mount the component against the PCB surface and carefully solder the leads
2- Make sure the solder joints are cone-shaped and shiny
3- Trim excess leads as close as possible to the solder joint
REMOVE THEM FROM THE TAPE ONE AT A TIME !
AXIAL COMPONENTS ARE TAPED IN THE
CORRECT MOUNTING SEQUENCE !
You will find the colour code for the resistances and the LEDs in the HALG
(general manual) and on our website: http://www.velleman.be/common/service.aspx

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Construction
 R1 : 4K7 (4 - 7 - 2 - B)
 R2 : 4K7 (4 - 7 - 2 - B)
 R3 : 47K (4 - 7 - 3 - B)
2. 1/4W Resistors
R...
 C1 : 100nF (104)
 C2 : 100nF (104)
5. Capacitors
 IC1 : 6p
4. IC socket. Watch the
position of the notch!
 D1 : 1N4148
 D2 : 1N4148
 D3 : 1N4148
1. Diodes. Watch the polarity !
D. . .
CAT HODE
1.0 Assembly of the power supply module P6002PS
 D4 : 1N4007
 D5 : 1N4007
 D6 : 1N4007
 D7 : 1N4007
3. Diodes. Watch the polarity !
D. . .
CAT HODE
 T1 : BC547B
 T2 : BC547B
6. Transistors.
 J1 : 2 x 2p
 J2 : 3 x 2p
7. Terminal blocks
 C3 : 2200µF
8. Electrolytic Capacitor.
Watch the polarity !
C...
 RY1 :VR15M121C (12V/15A - 1C)
 RY2 :VR15M121C (12V/15A - 1C)
9. Relays
RY...

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 VR1 :UA7805
First bend the connections of the regulator at an angle of 90°, so that
the fixing hole corresponds with the pcb, then fix the regulator along
with the cooling plate onto the pcb using an M3 bolt and a nut.
Now you may solder the connections of the regulator.
10. Voltage regulator.
Construction
 IC1 : TIL111
11. IC. Watch the position of
the notch!

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Construction
2.0 Assembly of the processor module P6002UP
 J : 3x
1. Jumper wire
 R4 : 4K7 (4 - 7 - 2 - B)
 R5 : 4K7 (4 - 7 - 2 - B)
 R6 : 4K7 (4 - 7 - 2 - B)
 R7 : 4K7 (4 - 7 - 2 - B)
 R8 : 4K7 (4 - 7 - 2 - B)
3. 1/4W Resistors
R...
 D8 : 1N4148
 D9 : 1N4148
2. Diode. Watch the polarity !
D...
CATHODE
 R9 : 1K (1 - 0 - 2 - B)
 R10 : 47K (4 - 7 - 3 - B)
 R11 : 47K (4 - 7 - 3 - B)
 R12 : 47K (4 - 7 - 3 - B)
 R13 : 47K (4 - 7 - 3 - B)
 R14 : 47K (4 - 7 - 3 - B)
 C4 : 18pF (18)
 C5 : 18pF (18)
 C6 : 10nF (103)
 C8 : 100nF (104)
 Do not mount C7 !!!
5. Capacitors
 IC2 : 28p
4. IC socket. Watch the
position of the notch!
 X1 : 4,1943 MHz.
6. Crystal.
X...
 T3 : BC547B
7. Transistor.
 IC1 : VK6002 (programmed PIC16C55A-04)
8. IC. Watch the position of
the notch!

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3.0 Assembly of the display module P6002D
Construction
 R35 : 4K7 (4 - 7 - 2 - B)
 R36 : 4K7 (4 - 7 - 2 - B)
 R37 : 4K7 (4 - 7 - 2 - B)
 R38 : 4K7 (4 - 7 - 2 - B)
1. 1/4W Resistors
R...
Fit a 40-pin IC-socket at the place
of DY1 through DY4.
2. IC socket.
 T4 : BC547B
 T5 : BC547B
 T6 : BC547B
 T7 : BC547B
 T8 : BC547B
 T9 : BC547B
 T10 : BC547B
 T11 : BC547B
 T12 : BC547B
 T13 : BC547B
 T14 : BC516
 T15 : BC516
 T16 : BC516
 T17 : BC516
3. Transistors.
 R15 : 100 (1 - 0 - 1 - B)
 R16 : 100 (1 - 0 - 1 - B)
4. 1/4W Resistors
R...
 R17 : 100 (1 - 0 - 1 - B)
 R18 : 100 (1 - 0 - 1 - B)
 R19 : 100 (1 - 0 - 1 - B)
 R20 : 100 (1 - 0 - 1 - B)
 R21 : 100 (1 - 0 - 1 - B)
 R22 : 100 (1 - 0 - 1 - B)
 R23 : 270 (2 - 7 - 1 - B)
 R24 : 270 (2 - 7 - 1 - B)
 R25 : 4K7 (4 - 7 - 2 - B)
 R26 : 4K7 (4 - 7 - 2 - B)
 R27 : 4K7 (4 - 7 - 2 - B)
 R28 : 4K7 (4 - 7 - 2 - B)
 R29 : 4K7 (4 - 7 - 2 - B)
 R30 : 4K7 (4 - 7 - 2 - B)
 R31 : 4K7 (4 - 7 - 2 - B)
 R32 : 4K7 (4 - 7 - 2 - B)
 R33 : 4K7 (4 - 7 - 2 - B)
 R34 : 4K7 (4 - 7 - 2 - B)

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LD...
CATHODE
23mm
0.9"
MAX.
10mm
 LD1
 LD2
 LD3
 LD4
 Take care that the LED's do
not overtop the displays !
Red
Construction
 SW1
 SW2
 SW3
7. Push button.
 DY1
 DY2
 DY3
 DY4
 Pay attention to the position
of the decimal point !
5. Displays
Decimal point
6. LEDs. Watch the polarity!

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Solder at the through connection points A0,S3,A1,A2,etc... (fig 2.0); D,C,E,etc... (fig 3.0) of the display
module (P6002D), a wire jumper at the solder side, so that you can connect them to the processor module
(P6002UP) later on.
Cut the free ends of the wire jumpers on the bias (see fig. 4.0); this makes passing through the other pcb
easier.
Assembly
4.0 ASSEMBLY
SOLDERSIDE
A1
A2
S2
A3
S1
+V
A0 S3 E
D
C
L3
DP
L4
G
F
A
B
SOLDERSIDE
D... A0 ... +V
FIG. 2.0 FIG. 3.0
FIG. 4.0

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Assembly
Final assembly (fig 5.0):
Fit the front panel with four 45mm bolts, and push a 10mm distance tube on each bolt. Push the display
module on the bolts up to the distance tubes and fix the module by means of four nuts (check if the displays
are flush with the front side of the front panel). Push another four 10mm distance tubes on the bolts, followed
by the processor module (with its components towards the front panel) and take care that the through
connections are made. However don't solder them until the module has been fixed by means of four nuts.
Now push another four 10mm distance tubes on the bolts followed by the supply module with its components
at the back. Fix the module using four nuts and make the through connections TS,V2,+V etc... with the
processor module
FIG. 5.0

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Then fit the push buttons with their caps (red for select-SW1), fig 6.0.
Finally stick the front panel to the front plate.
 Attention: keep the display window free!
Assembly
FIG. 6.0

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Connect a 9VAC supply voltage to the terminals VA and VB. Now, provided everything is all right, the
indication FAIL should be displayed (this will be the case after every interruption of the supply voltage), see
figure 7.0. For the further test you need the sensor K6001.
5.0 ADJUSTMENT AND USAGE
Adjustment & usage
FIG. 7.0

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 REMARK :
 The controller won't work (neither the clock) until the temperature sensor has been connected.

Following very short power interruptions the controller may get locked up. Therefore leave a pause of
about 10 seconds between switching the power off and switching it on again.
First switch the power supply of the controller off.
Connect the sensor output (OUT + and -) with the corresponding points (IN + and -) of the controller.
(don't forget to connect the supply voltage of the sensor!)
 ATTENTION: The power supply of the sensor K6001 MUST be kept apart from
the one of the controller. NEVER connect both power supplies together.
Now switch the power supply of the controller on. This causes the indication FAIL to be redisplayed.
By now pushing SELECT repeatedly, you can call the different indications onto the display one after another.
The different time and alarm settings then can be changed by pressing the UP or DOWN button.
 REMARK: To avoid contact bouncing, the push buttons won't react immediately,
but only after about 0.5 seconds.
Adjustment & usage

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To pass to the next or previous step, push the button shortly.
To go through the menu quickly, keep the button pressed.
Sequence of the menus (see also fig. 8.0) :
1) TIME indication and setting
2) TEMPERATURE indication
3) LOW ALARM setting
4) LOW ALARM HYSTERESIS setting
5) HIGH ALARM setting
6) HIGH ALARM HYSTERESIS setting
7) ALTERNATELY TIME/TEMPERATURE indication
Pushing the button again causes the TIME to be redisplayed, etc... .
 REMARK:
When going through the different alarm settings, at every single step
the corresponding LED is lit, where the relay belonging to the alarm
in question remains "OFF". So, the alarms will only react if the
controller is in menu 1, 2 or 7. As soon as one of the alarm values is
reached, the corresponding indication LED starts flashing and the
relay belonging to it is driven on.
Adjustment & usage
FIG. 8.0

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Example of an alarm setting when using the kit to control a living-room heating combined with a cooling fan
(or air-conditioning).
Desired temperature: 22°C
Highest temperature allowed: 26°C
Lowest temperature allowed: 19°C
Setting the alarms:
HIGH ALARM (to switch the fan on) : 26°C
HIGH HYSTERESIS (to switch the fan off) : 22°C
LOW ALARM (to switch the heating on) : 19°C
LOW HYSTERESIS (to switch the heating off) : 22°C
Adjustment & usage

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If the relays are used to switch alternating voltage, it may be necessary to suppress them.
Figure 9.0 shows how to suppress resistive loads (lamp, resistor, ...).
Figure 9.1 shows how to suppress inductive loads (transformer, motor, ...).
Figure 9.2 applies in case all the above solutions fail. In this last case an independantly feeded DC-relay is
used, which is installed as close to the load as possible.
6.0 REMEDIES IN THE CASE OF MALFUNCTION CAUSED BY THE RELAYS
Remedies
FIG. 9.0 FIG. 9.1
FIG. 9.2
WITH ADDITIONAL DC-RELAY
INDUCTIVE LOADS
RESISTIVE LOADS

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 Pay attention to the diode which is fit ANTI-parallel with the coil, its cathode connected to the plus
side, its anode connected to the minus side!
 This relay MUST be feeded by a separate power supply.
The VDR in fig. 9.1 must be suited for the voltage to be switched, e.g. Siemens SIOV S14K275 for use with a
220-240V mains, or S14K150 for a 110-125V mains.
The above remedies are general and consequently apply to any relay circuit.
Remedies

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7.0. SCHEMATIC DIAGRAM
Schematic diagram