Velleman-Kit K2636 User manual

UNIVERSAL AC MOTOR CONTROL
K2636
ILLUSTRATED ASSEMBLY MANUAL H2636IP-1
Easyspeedcontrolof ACcollectormotors.

2
Features & Specifications
This kit is especially designed to control the speed of drills or any other AC-motors with carbon brushes. Contrary to the usual
dimmers, there isn't a phase cut every 1/2 period but only once per period. The moment of cutting determines the speed which can
be adjusted from 5 to about 95 %. Owing to this kind of controling, we keep a higher torque at low speed.This does not mean on
the other hand, that this circuit cannot be used for a resistive load (e.g. lamps, heating devices.).
A few advantages are :
The control range is from 5 to 95%.
There is an anti-RF interference circuit included.
The triac is protected against inductive voltage peaks from the motor.
The control circuit is powered by the mains, but the load supply may be derived from a different AC source.
Both voltages should have the same frequence though, and they should have completely the same phase or the
opposite phase (derived from one and the same phase out of the 3-Phase power source).
By keeping the MAINS- and LOAD SUPPLY separated this circuit is extremely appropriate for the use in low voltage
applications: e.g. in swimming pools, outdoors ...
Specifications
Power voltage :
MAINS 220-240 VAC or 115 VAC
LOAD SUPPLY 24VAC to 240VAC
MAINS AND LOAD SUPPLY are galvanically separated
Max. power to be regulated : 1200W at 240V (max. 5A).
Separate adjustment for the lowest speed.
Anti-RF interference circuit included.
Dimensions : 120x75x41mm / 4,72x2,95x1,6"

3
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, the 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
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

DO NOT BLINDLY FOLLOW THE ORDER OF THE COMPONENTS ONTO THE TAPE.
ALWAYS CHECK THEIR VALUE ON THE PARTS LIST!
REMOVE THEM FROM THE TAPE ONE AT A TIME !

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Choose operating frequency :
Europe (50Hz)
R7 : 47K (4 - 7 - 3 - B)
US (60Hz)
R7 : 10K (1 - 0 - 3 - B)
Construction
C3 : 100nF (104)
5. Capacitor
D1 : 1N4007
D2 : 1N4007
D3 : 1N4148
D4 : 1N4148
D5 : 1N4148
D6 : 1N4148
D7 : 1N4007
2. Diodes. Watch the
polarity !
D.. .
CATHODE
R1 : 4K7 (4 - 7 - 2 - B)
R2 : 3K3 (3 - 3 - 2 - B)
R3 : 680 (6 - 8 - 1 - B)
R4 : 22K (2 - 2 - 3 - B)
R5 : 22K (2 - 2 - 3 - B)
R6 : 1K5 (1 - 5 - 2 - B)
R8 : 100K (1 - 0 - 4 - B)
R12 : 1K (1 - 0 - 2 - B)
R15 : 2K2 (2 - 2 - 2 - B)
3. Resistors
R...
Mount jumper according to the
main voltage :
J1: 115V OR J2: 230V
1. Jumper SK4
R9 : 100 (1 - 0 - 1 - B - 9)
R10 : 120 (1 - 2 - 1 - B - 9)
R11 : 68 (6 - 8 - 0 - B - 9)
R13 : 27 (2 - 7 - 0 - B - 9)
R14 : 390K (3 - 9 - 4 - B - 9)
4. Metal film resistors
R...
RV2 : 100K
6. Trim potentiometer
R...

6
Construction
T1 : BC547B
T2 : BC547B
T3 : BC547B
T4 : BC517
7. Transistors.
C1 : 470µF
C2 : 1µF
9. Electrolytic Capacitors.
Watch the polarity !
C...
C5 : 47nF
C6 : 100nF/275VAC X2
C7 : 47nF/400V
8. Capacitors
F1 : 250mA (slow)
F2 : 5A (slow)
11. Fuse holders + fuses
F...
RV1 : 100K
12. Trim potentiometer
RV...
L1 : 1mH/5A/1Khz.
14. Coil.
TRAFO1 : 2 x 6V / 2 x 0,3A
Mount the 6V connections to
the OUTSIDE of the print !
15. Transformer
TRAFO...
LD1 : 3mm RED
LD...
CATHODE
VAC : 2p
LOAD : 2p
MAINS : 2p
10. Terminal blocks. 13. LED

7
Construction
TR1 : BT137F-600
Place the heatsink and the triac on the PCB.
Fix the two components with a M3 bolt and nut.
Now, the triac may be soldered.
16. Triac.
mm
3 BOLT
M3
NUT
LOCK
WASHER
10mm
M3 BOLT

8
Test & connection
ATTENTION:
A PART OF THE CIRCUIT IS ALWAYS UNDER MAIN
VOLTAGE. TAKE ALL POSSIBLE PRECAUTIONS, SO
THAT
NO-ONE CAN TOUCH ANY PART. FOR YOUR OWN
SECURITY AS FOR THE USERS' SECURITY. MOUNT
THIS KIT PREFERABLY IN AN ISOLATING HOUSING.
THE FUSE WILL MELT IN CASE OF AN OVERLOAD, RE-
PLACE IT BY EXACTLY THE SAME TYPE.
Connect the load to the screw connector marked by "LOAD" see fig. 1. Consider the max. load (5,5A)
Connect the mains voltage on the screw connector "MAINS".
See whether you have mounted the right jumper (J1 or J2).
The power voltage for the load is put on the connector. "VAC" (24 … 240VAC).
See that this voltage and the "MAINS" voltage have the same frequency and that they are either in phase
or in the opposite phase. Owing to the fact that the supply voltages of the load and the control circuit are
completely separated, one can also connect low voltage loads. This makes this circuits fits for regulations
M
110 - 240VAC
MAINSLOADVAC
L
N
L
N
Fig 1.0
N
L
N
LL
N
M
17. Test & connection

9
Test & connection
Turn RV1 completely to the left (minimal position) and RV2 completely to the right.
Switch the power on.
BE CAREFUL: a large part of the circuit is under mains power, do not touch it!
Adjust RV2 so that the motor will have the lowest speed. It is important for the motor to start at any time,
even where RV1 is put in its minimal position, otherwise there might be large currents causing sparks
that burn the carbon brushes.
NOTE: If the torque is poor, swap the two wires, connected to "VAC", mutually. The connections to
"MAINS" must remain un-changed!

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PCB
PCB

11
Diagram
Schematic diagram

Modifications and typographical errors reserved © Velleman nv., Legen Heirweg 33 - 9890 Gavere (Belgium).
H2636IP’1 - 2014 (rev.5)
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VELLEMAN NV
Legen Heirweg 33, B-9890 GAVERE
Belgium (Europe)