Total solder points: 167 Difficulty level: beginner 1 2 3 4 5 advanced DMX CONTROLLED RELAY K8072 f the welly means o l.
Features & specifications This Kit allows you to control a relay by means of the well-known DMX512 protocol. This protocol was developed by USITT in 1986 to control dimmers, scanners, moving-head spots and other lighting devices with a simple wiring. In some cases, a simple ON/OFF selection is desired. This is where this K8072 comes in. It is actually a bus-controlled power driver.
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.
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 ! DO NOT BLINDLY FOLLOW THE ORDER OF THE COMPONENTS ONTO THE TAPE.
Construction 1. Jumper wires R20 R21 R22 R23 R24 R25 3. Resistors R... : : : : : : 1M 4K7 4K7 100K 100K 10 (1 - 0 - 5 - B) (4 - 7 - 2 - B) (4 - 7 - 2 - B) (1 - 0 - 4 - B) (1 - 0 - 4 - B) (1 - 0 - 0 - B) 4. Metal film resistor J : 3x 2. Diodes. Watch the polarity ! CATHODE D1 : 1N4007 D2 : 1N4148 D...
Construction 6. Capacitors. 8. DIP switch c... C1 C2 C3 C4 C5 C6 C7 : : : : : : : 11. Pin header JP1 : 2p JP2 : 2p C... 15pF 15pF 10nF 100nF 100nF 100nF 100nF (15) (15) (103) (104) (104) (104) (104) (DMX mode selection) (Hold status) SW... 1 SW1 : DMX address selection 9. Voltage regulator VR1 : UA78L05 12. Board to wire connector VR... SK2 : 3p DMX input 7. LED’s. Watch the polarity ! COLOR= 2...5 LD...
Construction 14. Terminal blocks 16. VDR 18. IC's. Watch the position of the notch notch ! SK1 : 2p SK3 : 3p AC input Relay contacts VDR1 : VDR300 (300VAC / 385VDC) IC1 : SN75176 IC2 : VK8072 (programmed PIC16F627A-I/P) 15. Electrolytic capacitors 17. Relay C... C8 : 10µF / 35V C9 : 470µF / 25V RY1 : VR10V121C/16 CHECK THOROUGHLY ALL THE COMPONENTS FOR MISS MOUNTING, INCLUDING SOLDERING ERRORS.
XLR plug 19. Wiring the 3P XLR plug Solder the 3-pole male print connector to the XLR connector using the figure below to check the accuracy of the connections (see figure 1.0) 1 (Brown) Legend : 2 Red 2 (Red) 1 Ground 2 Data - 3 3 Data + (Orange) 1 Orange Fig. 1.
Connection 20. Connection and Use of the DMX Switch Connect the load (motor, light bulb or bulb group) to the relay output (SK3). Mind the max. switching power of 8A (at 230V = 1900W) for a resistive load. NC Connect the DMX signal to the DMX IN input (SK2). See figure. SK3 COM NO Fig. 2.0 N L Remark: Some DMX controllers have a reversed DMX polarity. Swap DATA+ and DATA-. .
Set-up 21. Setting the DMX Channel: Set up the DMX channel or “DMX address” by means of the DIPSWITCH, SW1. You can set up the DMX channel between 1 and 511, channel 0 is not used. The switches from 1 to 9 generate a binary digit representing the DMX channel. Switch 1 is the LSB, switch 9 is the MSB. Only modify the DMX channel when the K8072 is not plugged in. Make sure to restart the kit after every modification.
Set-up Terminator: The DMX protocol implies that the last device in a series must be fitted with a 120 ohms terminator. The kit has already been fitted with the terminator. Activate it as follows: position DIP switch nr 10 to ON. The terminator must be deactivated in all other devices which means it must be positioned to OFF. ON 1. Position switch 10 of SW1 to ON when using the K8072 as sole connected DMX device or when this K8072 is the last device in a series (see “Terminator”). 2.
Set-up LED LD2 “Error” Functions: LD2, the “Error” LED has following functions: Flashes once at turn-ON of the K8072. Allows you to check if the CPU is functioning. Flashes slowly when there is no DMX signal reception, no connection between the DMX controller and the K8072, a DMX signal error or no signal compatibility. Flashes rapidly when the DMX address is positioned on 0 and/or the manual override function has been activated.
Set-up Manual Override Function: Exceptionally, the relay must be activated, even when there is no DMX signal (e.g. when testing a light bulb). Proceed as follows: Position the DMX address to 0 Mount jumper JP1 Switch on the 12V power; the relay will activate regardless of the DMX value.
PCB 22.
diagram 23.
VELLEMAN NV Legen Heirweg 33, B-9890 GAVERE Belgium (Europe) Modifications and typographical errors reserved © Velleman nv. - H8072IP’1 - 2014 (rev.