Velleman-Kit K2634 User manual

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QUAD TRIAC SWITCH CARD
K2634
ILLUSTRATED ASSEMBLY MANUAL H2634IP-1
Total solder points: 108
Difficulty level: beginner 12345 advanced
Controlupto4high-powercircuits
fromalow-powerdrivecircuit.

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Features:
 Four triac outputs
 Inputs galvanically isolated by optocouplers.
 4 control LED's are provided
Specifications:
 Load : 24 to 240V AC, 0,5 A not cooled (max. 4A) per output.
 Control current : 10 to 20mA DC.
 9V DC/200mA ISOLATED FROM THE MAIN VOLTAGE (isolated winding or another transformer).
 Dimensions : 78 x 90 x 29 mm
Features & Specifications
Applying relays is the most usual way to switch an alternating current (AC) with an electronic control,
because of its simplicity and its security, as the switching and switched voltage are completely separated.
The low speed (esp. for illuminated advertisements ) and the short life of the contacts are however major
disadvantages. In order to avoid the disadvantages of the relay without losing the advantages, optocoupler
controlled triacs are used. Because of the fact that the outputs are controlled by current instead of voltage, they
are less sensitive to input interferences, so that the triac card can easily be mounted near the load and relatively far
from the control circuit (e.g. for score boards etc.).
This kit can immediately be connected to cards like: K8000, K8050, K8023, K8055, K8046, K8055 or other cards
with open collector output. Circuits which can deliver a control current of 10mA or higher can also be used.

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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 oftenon a wet sponge or cloth, to keep it clean; then apply solderto the tip, togive it a wetlook. This is called ‘thinning’ and will
protect the tip, and enables you to make good connections. When solderrolls 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’ ona 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 COR-
RECT MOUNTING SEQUENCE !

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For use with a regular open collector output and a control voltage
of 9 to 15VDC :
Rx : 820 (8 - 2 - 1 - B)
 If your control voltage is higher, then a higher value
resistor must be used.
For 24Vdc :
Rx : 1K8 (1 - 8 - 2 - B)
1. Resistors
R...
Construction
 R1 : 220 (2 - 2 - 1 - B)
 R2 : 220 (2 - 2 - 1 - B)
 R3 : 220 (2 - 2 - 1 - B)
 R4 : 220 (2 - 2 - 1 - B)
 R5 : 10K (1 - 0 - 3 - B)
 R6 : 10K (1 - 0 - 3 - B)
 R7 : 10K (1 - 0 - 3 - B)
 R8 : 10K (1 - 0 - 3 - B)
 R9 : 12K (1 - 2 - 3 - B)
 R10 : 12K (1 - 2 - 3 - B)
 R11 : 12K (1 - 2 - 3 - B)
 R12 : 12K (1 - 2 - 3 - B)
 IC1 : TIL111 or equivalent
 IC2 : TIL111 or equivalent
 IC3 : TIL111 or equivalent
 IC4 : TIL111 or equivalent
 Mind the position of the notch :
it should point to the Velleman
emblem.
2 . IC’s.
3. Transistors
 T1 : BC547B
 T2 : BC547B
 T3 : BC547B
 T4 : BC547B

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Construction
 You can also use terminal con-
nectors.
 VAC : 2X
 OUT1 : 2X
 OUT2 : 2X
 OUT3 : 2X
 OUT4 : 2X
 9VDC : 2X
 IN1 : 2X
 IN2 : 2X
 IN3 : 2X
 IN4 : 2X
4. PCB tabs
 LD1
 LD2
 LD3
 LD4
5. LED. Watch the polarity!
LD1
CATHODE
 TRI1: TIC206M
 TRI2: TIC206M
 TRI3: TIC206M
 TRI4: TIC206M
 Remarks : Make sure the metal backside of the triacs points to the
outputs.
 Apply a layer of tin on the entire PCB track.
If you want to switch more than 1,5A per output, then the triacs
need cooling.
 You therefore have to mount heatsinks to the triacs. If you mount all
the triacs on the same heatsink, then you have to isolate the
triacs with mica plates and special plastic washers.
The PCB tacks interconnecting the output connectors and the triacs
are not protected by the red solder mask.
We advise you to strengthen these in soldering a copper wire of
1,5mm2 along the whole print. We must take into account that the
entire load current goes through these connections; so up to 4A, if
the triacs are cooled !
6. Triacs
TR...
5mm Red

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Connection
7. Connection
 Connect the minus side of the inputs to the open collector outputs of the interface card(s) (see fig.1).
 Connect the positive side of all inputs with a control voltage (ex. +9Vdc to 12Vdc). The negative (GND)
of the control voltage must also be connected to the Common (or GND) of the open collector card.
 Keep in mind that EACH input of the triac card takes about 12mA from the power supply !
 This control voltage has to be COMPLETELY ISOLATED!
 To supply the card a separate supply must be used of 9Vdc (see fig. 1)
 Connect the supply for the loads to the points VAC. It may range between 24 and 240 VAC.
Fig.1

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Connection
 ATTENTION : everything on the print from the optocouplers to the output side is subjected to this
(eventual) hazardeous voltage.
The loads are connected to OUT1 and OUT4.
Interferences on the mains are possible because of the fact that the load switching does not necessarily
takes place on the zero crossing point of the AC. When this should disturb the computer functioning, we
advise you to install the triac card near the loads to be switched.

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8. Schematic diagram.
Schematic diagram

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PCB
9. PCB

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Modifications and typographical errors reserved
© Velleman Components nv.
H2634IP - 2003 - ED1
VELLEMAN Components NV
Legen Heirweg 33
9890 Gavere
Belgium Europe
www.velleman.be
www.velleman-kit.com
5410329 310264

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Largest Supplier of Electrical and Electronic Components
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