Renard 64XC

Introduction

The Renard 64 is a PIC microcontroller based Christmas light controller designed to be used with external Solid State Relays or SSRs. The board design is based on the PIC-based 8-port dimmer concept originally developed by Phil Short. Information on the original concept can be viewed here. Generic information pertaining to current Renard designs (including maximum channel count) can be found on the Renard wiki page.

Disclaimers

The standard disclaimers pertaining to the information contained on this wiki page are listed here.

The Board

File:REN64XC PCB.jpg

The Renard 64 measures X" x X"

Circuit Diagram

The schematic diagram can be found here.

Key circuit components

Connectors

• J1 – RS485 outgoing data
• J2 – RS232/RS485 incoming data
• JDP1 – RS232 incoming data, DE9 connector for direct connect to show computer serial port.

IC Chips

• U2 – H11AA1 Optocoupler, used to generate the Zero Cross signal
• U4 & U5 – ST485BN, RS232/RS485 Transmitter/ Receiver
• U6-U8 – PIC16F688 Microcontrollers

Resistors

• RXX-RXX – Channel LED gate resistors and resistor Networks.

Diagnostic LEDs

• PWR – Lit whenever the voltage regulator is generating 5 VDC.

NOTE: The following Diagnostic LEDs will only function when a jumper is placed on JP3

When U6 is programmed with the diagnostics firmware:

• HB - will blink ON/OFF to indicate that the PIC is operating correctly
• ZC - will blink ON/OFF to indicate that the Zero Cross signal is getting to the PIC correctly
• SD - will be ON whenever the PIC is receiving data correctly
• FE - will only be ON when the PIC has identified a Framing Error while receiving data
• OE - will only be ON when the PIC has identified an Overrun Error while receiving data

When U6 is programmed with the operational firmware:

• HB - will be ON whenever channel 2 is ON
• ZC - will be ON whenever channel 5 is ON
• SD - will be ON whenever channel 6 is ON
• FE - will be ON whenever channel 7 is ON
• OE - will be ON whenever channel 8 is ON

Other Components

• U1 – LF50CV, 5 VDC Voltage Regulator
• U3 – ECS-2100AX-18.432MHZ, 18.432 MHz Crystal Clock Oscillator

Jumpers

• JP1 – RS232 signal ground. Install a shunt (jumper) on JP1 when receiving RS232 data.
• JP2 – 120 ohm termination resistor enable. Normally a shunt will be installed on JP2. Remove the shunt if you are experiencing problems with incoming data.
• JP3 – Diagnostic LEDs enable. Install a shunt on JP3 to allow the Diagnostic LEDs to function. During normal operation, you can remove the shunt with no negative impact on board operation.

Test Points

• +5 – Output from voltage regulator, should be +5 ± 0.1 VDC
• GND – Ground
• ZC – Zero Cross signal

Firmware

The PICs (U7 - U14) must be programmed with the latest firmware for the Renard 64 to operate properly. The firmware can be found on the Renard Firmware wiki page.

Powering the Renard 64

Input power requirements: An AC source of 6.3VAC

DC power:

The Renard SS24 generates all the DC voltage that it requires on-board and no external DC voltage source is required.

AC Power:

The board is designed to be powered with a 6.3VAC, 1A transformer, providing both power and a zero-crossing signal at the same time. One potential transformer for this application is the Xicon 41FD010 transformer (mouser p/n 41FD010). The center-tap of this transformer should be left open, perhaps covered with a wire nut to protect it from inadvertant short-circuits.

If all the LEDs are used in the REN64XC, a 1000mA could be used if all the channels were used. This leaves no room for error on the transformer listed above. One option is to use a 41FD030 which is a 3A version of the transformer listed above. Now the interesting thing is, at the time of this writing, the 41FD030 is actually cheaper than the smaller one. It is not a good idea to power more than one board off a single transformer.

If you do not have 120VAC power, then you may have a larger challenge. A cost effective transformer from 220VAC to 6.3VAC has not been located. There are options but you should get some expert assistance from forums members. Careful selection of resistor replacements with special care to the overall maximum input voltage is required and each case is special.

AC Power Handling Capability

Maximum Input Load

The Renard SS24 is divided into two banks of twelve triacs. Each bank of triacs is capable of carrying up to 15 amps of current based on the trace width used on the pcb.

Triac Loads

Based on the pcb trace widths, each triac can handle up to two amps of current. A heat sink is highly recommended when running the triacs at two amps. Care must be taken to ensure that the total load of the twelve triacs in each bank does not exceed the rating of the fuse protecting the triac bank or 15 amps (whichever is less).

Fuses

Each bank of triacs is independently protected by its own fuse. The size of the fuse selected to use for each bank of triacs is dependent on how the Renard SS24 is connected to the AC power. When each bank of triacs has its own dedicated AC input, the size of the fuse cannot exceed the current handling capability of the input wire or 15 amps (whichever is less).

If both banks of triacs are being powered by the same AC input and a jumper is used to connect the two banks together, then the size of both fuses added together cannot not exceed the current handling capability of the input wire.

The BOM calls for a 10 amp fuse under that assumption that each bank of triacs will be independantly powered by a common/generic extension cord. Most of the common extension cords used by DIYC members are rated for only 13 amps and 13 amp fuses are not commonly found.

Hooking Up the Renard SS24

Data Connections

Typical connection between computer running Vixen and Renard SS24 boards

Typical connection between RS485/DMX/Renard and Renard SS24 boards

Data Cables

Data cables for Renard SS board hookup directly to computer COMM port

PC DE9 Pin 3 to Renard SS DE9 Pin 3
PC DE9 Pin 5 to Renard SS DE9 Pin 5

PC DE9 Pin 3 to RJ45-pin 4
PC DE9 Pin 5 to RJ45-pin 5 and pin 1 and/or pin 2 

Data cable for Renard SS board hookup using a RS232->RS485 converter

Due to the many different types of RS232->RS485 converters available the drawing only refers to the signals coming from the converter. Check the documentation for your converter to figure out how/where to hook up the correct wires.

RS485(-) Signal to RJ45-pin 4
RS485(+) Signal to RJ45-pin 5

Data cable for Renard SS board hookup in a DMX environment

DMX using XLR Connectors
   XLR connector pin 1 (GND) to RJ45-pin 1 and/or pin 2
   XLR connector pin 2 (Data-) to RJ45-pin 4
   XLR connector pin 3 (Data+) to RJ45-pin 5

DMX using RJ45 (CAT5) Connectors
   RJ45 connector pin 1 (Data+) to RJ45-pin 5
   RJ45 connector pin 2 (Data-) to RJ45-pin 4
   RJ45 connector pins 7 & 8 (GND) to RJ45-pins 1 & 2

Data cable for Renard SS board hookup to other Renard boards

Generally only a regular straight-thru CAT5 cable is required to connect Renard SS boards to other Renard boards. For the few exceptions (ie Ren24 V2.5), check the wiki page for those boards to see what their unique requirements are.

Cable Lengths

Data cables connecting the Renard SS boards directly to a computer COMM port should not be longer than 50 feet according to the RS-232 standard. This distance can also be greatly reduced by using poor quality cables.

Data cables connecting the Renard SS boards directly to other Renard boards or any other RS-485 source can be up to 4,000 feet in length for data rates up to 100Kbps according to the RS-485 standard.

AC Power Connection

Connection Option #1

In the above layout, each bank of triacs has its own dedicated AC input (orange/black wires).

Key thing to remember in this layout is:

• The size of each fuse cannot exceed the current handling capability of the orange/black wires or 15 amps (whichever is less).

Connection Option #2

In the above layout, the main AC input [orange/black wires] is connected to two sets of feeder wires [blue/green wires] by a twist-on wire connector (commonly referred to as a wire nut). The feeder wires are then connected to the triac banks.

Key things to remember in this layout are:

• The size of the fuses cannot exceed the current handling capability of the feeder wires [blue/green wires] or 15 amps (whichever is less).

AND

• The size of both fuses together cannot exceed the current handling capability of the main AC input [orange/black wires].

Connection Option #3

In the above layout, the right side banks of triacs are powered by jumper wires [blue/green wires] coming from the left side [N 120V] terminal block. This means that both banks of triacs are being powered by the same AC input [orange/black wires].

Key things to remember in this layout are:

• The size of the right fuse cannot exceed the current handling capability of the blue/green wires or 15 amps (whichever is less).

AND

• The size of both fuses together cannot exceed the current handling capability of the AC input [orange/black wires].

Connecting Multiple Renard Boards

The above image shows how Renard SS boards can be daisy chained together. Renard SS8 boards are used in the image just as an example of how all Renard SS boards can be connected together.

Key things to remember when connecting Renard SS boards together:

• You only need one instance of the Renard Dimmer plug-in in Vixen for each physical COMM port being used. You just need to make sure that the plug-in is setup for the total number of channels for all the Renard boards connected to that COMM port. In the above example, the plug-in would be set for 32 channels.

• The total number of Renard boards that can be connected together depends on the event period and the baud rate being used. More information on the total number of channels capable with Renard systems can be found here here.

Computer Setup

VIXEN Settings

The Renard SS boards require the Renard Dimmer [Vixen 1.1.*] or Renard Dimmer (modified) [Vixen 2.*] Plug-In.

Renard Dimmer Plug-In Settings:

• Protocol Version: 1
• COM1 (or whichever COM port you are connected to)
• Baud: 57600 (default firmware value, if firmware is changed then this needs to be changed to match the firmware)
• Parity: None
• Data bits: 8
• Stop bits: One
• Hold port open during the duration of the sequence execution: Checked

Setup for Beginners and Troubleshooting

If you are unsure that you have built your hardware correctly, you should follow the procedures contained in the Renard SS24 Beginners Setup Guide. These procedures will guide you through the steps to help setup the hardware for the first time.

If you encounter any problems with your Renard SS24, you can go to the Troubleshooting Guide The Renard SS24. The troubleshooting guide contains a methodical process to try to isolate problems/malfunctions and gives suggestions of what to do to fix them.

Related Links

Beginners Setup Guide The Renard SS24

Assembly Instructions The Renard SS24

Troubleshooting Guide The Renard SS24

Renard Main Page

Renard Firmware

Part Substitutions

VIXEN

Glossary of DIYC Terms

Electronic Symbols