User Manual and Instructions
Contents
1. MCU DIP ik l y XCET 1 hs e Igniter E Match WWW XAVIEN COM TE REYE Actuator 5 sey O Q IU 58 ae j RED ARMED LED FS1 FS2 FAILSAFES Figure 2 gives a close look at the DIP switches and explains time value of each switch Table 1 gives examples of time settings For example to get a delay of 10 seconds you would turn ON switch 2 and switch 4 2 seconds 8 seconds 10 seconds rest would be OFF The timing begins counting down as soon as BOTH failsafes are OPEN disabled If the unit is powered up with both failsafes OPEN the unit begins counting down immediately Make sure fail safes are in place BEFORE applying power to the unit Figure 3A and 3B gives examples of the output when the switches are setup as depicted Switch 6 sets the ON time of the output It can be set to either 0 5s or 1 0s The output voltage is the same as the input so if you have the input powered off of a 9V battery then the output will be 9V So if you have the XCET 1 set for 3 seconds with a PULSE time of 1 second and powered off of a 9V battery then the operation will be as follows y FS1 and FS2 OPENED Output OV OUTPUT 9V Rocket Launched DELAY for 3 seconds Delay for 1 second Figure 2 DIP Switch with all swit2. xavier XCET 1 Xavien Continuous Event Timer User Manual and Instructions XAVIEN PO Box 7433 Goodyear Az 85338 www xavien com System Overview The XCET 1 is a precise 1 second to 31 seconds continuous event timing system used to control events in a rocket such as continuously triggering a camera for a user specified time Time settings are set using a 6 position DIP switch that eases programming It runs off of an external DC power supply ranging from 7V to 15V a 9V alkaline battery is ideal for powering the XCET 1 Various igniters electric matches may be used because of the versatility and design of the XCET 1 these include Daveyfire and OXRAL The XCET 1 can also be used to drive a solenoid servo relay or some other devices that requires repetitive actions Specifications Battery external 7 15 VDC PEAK Firing Current 3A 10sec Dimensions 0 95 0 05 W x 2 5 4 0 02 L Weight 14 2 grams Nominal Battery Load 15mA Delay Settings 1 second to 31 seconds in 1 sec increments Output Pulse Time 0 5 seconds or 1 0 second user selectable Operational Overview Figure 1 depicts the component layout of the XCET 1 The switches are labeled 1 through 6 accordingly The ON position for the switches is labeled at the top of each DIP switch pack Switch 6 is used to set the ON time of the output Figure 1 XCET 1 Assembly
3. 1 is ready to go When unit is powered up green LED is ON verify that the RED ARMED LED is off If this is on then the rocket is armed and waiting for the second failsafe to be disabled This is usually only desired right before the rocket is launched If the RED LED is on and this is an undesired state immediately turn off power to the XCET 1 and check your failsafes Mounting Installation The XCET 1 must be installed securely to prevent the unit from being damaged during use Since this unit does not depend on a g switch orientation of the unit is very flexible The mounting holes are 0 125 this allows various size screws to be used Just verify the clearance of both the screw and the head to insure a proper fit without damaging the unit XCET 1 i 5 12 7mm 0 475 12 07mm 2 05 52 07mm 2 5 63 49mm OUTPUT URGENT The XCET 1 MUST be protected from ejection charge and motor residue These are corrosive and over time can damage the PCB of the XCET 1 If this occurs the warranty does not cover this type of damage Handling Precautions These units are sensitive to damage from ESD and should always be handled in a properly grounded environment damage from ESD is not covered under the warranty Never transport or handle a rocket with an XCET 1 that is powered up and connected to live polytechnic charges When installing an XCET 1 to ign
4. back to XAVIEN without this RMA number if we receive product with no RMA it will NOT be accepted and mailed back unrepaired Revision History PCB REV 1 00A DATE 09 10 2003 FW REV 1 00A DATE 09 10 2003 DOC REV 1 00A DATE 09 10 2003
5. ED opened Figure 4 FAILSAFES ENABLED FAILSAFES FS1 FS2 HY Jumper wires Once a failsafe has been DISABLED opened the only way to reset the failsafe is to turn the power off Once this is done you can ENABLE the failsafe and turn the power back on We at XAVIEN have had good luck using solder as the jumper wires for the failsafes Place the length of solder directly under the engine when it ignites it will melt the solder and countdown will begin Figure 5 shows a basic configuration for using the failsafes for the XAVIEN family of timers Figure 5 Basic FAILSAFE configuration PYROTECHNIC DEVICES e 5 Oe RED LED turns on a QU when timer is ARMED 0 FS1 OPEN Bye ix g a z 3 Ua ean KEY LOCK le TO ARM DISARM pe TIMER FS1 Wire loops back where it can be pulled OPEN ee by the rocket after launch Wire is 2 _ pieces that have exposed copper twisted together FS2 a IMPORTANT All connections FAILSAFE settings and switch position must be set BEFORE you apply power to the XCET 1 Pyrotechnic Actuator Installation The XCET 1 can be used as a traditional ignition timer and has been tested using various igniters and electric matches To install a pyrotechnic device onto the XCET 1 you simply unscrew the t
6. ches in the OFF position ON SEREDI 1 2 3 4 5 6 Switch Time Value 1 second 2 seconds 4 seconds 8 seconds 16 seconds PULSE ON TIME 0a AVIN IMPORTANT Switches MUST be set prior to turning power on to XCET 1 The MCU ONLY reads the switch settings on power up If changes need to be made turn unit OFF set switches and cycle power back ON Table 1 Example of delay settings Switch Setting Time Delay 1 2 3 4 5 6 Off Off Off Off Off Off Delay 1 second default ON time 0 5s On Off Off Off Off Off Delay 1 second ON time 0 5s On Off On Off Off Off Delay 5 seconds ON time 0 5s FIG 3A Off On Off On Off Off Delay 10 seconds ON time 0 5s Off On On Off On Off Delay 22 seconds ON time 0 5s On On Off Off Off On Delay 3 seconds ON time 1s Off Off Off On Off On Delay 8 seconds ON time 1s On On On On Off On Delay 15 seconds ON time 1s Off Off On Off On On Delay 20 seconds ON time 1s FIG 3B On On On On On On Delay 31 seconds ON time 1s Figure 3A ON ON 1 0s ON 1 0s ON 1 0s T OFF 20s T T OFF 20s T T OFF 20s T XCET 1 FAILSAFES The XCET 1 has two failsafes to protect against accidental timer countdowns The failsafes are ENABLED when FS1 and FS2 are connected together as in figure 4 The unit will NOT begin countdown until BOTH failsafes have been DISABL
7. erminals located as in figure 5 The terminals are screw based terminal blocks for easy access and reliability User does not need to worry about which terminal goes to which leg of the igniter electric match Make sure you hand tighten screw terminals after igniter electric match has been installed Figure 5A Pyrotechnic device install location Figure 5B Actuator device install location CoO Co Co Co Igniter Electric f A U Match d d O U _ _ DC OUTPUT Oe 0 gt FO Sci GROUND gt O When installing an actuator correct polarity must be observed The output of the XCET 1 is the same voltage that it uses as the input For example if you are using a 9V battery then your output will be 9V The XCET 1 can continuously handle 2 amperes 2A of current up to 15VDC or 3A surge at 15VDC for 10 seconds If you exceed this rating damage to the unit can occur Battery Connections The XCET 1 was designed to operate using a 9V alkaline battery We here at XAVIEN recommend using a switch 3A MAX CURRENT to insure ease of use when powering the unit up and down We have equipped the unit with a small green power indicator so the user can easily identify when the unit has power applied It is recommended that the user do tests using their igniter electric match configurations before assuming anyt
8. hing will work This will help to insure that the XCET 1 and your configuration will work to your expectations In figure 6 we have a basic diagram of the battery connections that are recommended by us It is always a good idea to insure you have a fresh new battery before any launches occur After all the cost of a battery is nothing compared to the time and money spent on many of our users rockets Figure 6 Recommended battery connections XCET 1 C 007 NJIAYX Ne GREEN POWER LED POWER SWITCH AYALLVE ANITVY TV A6 Setup Sequence This is the recommended sequence for setting up the XCET 1 1 2 3 4 a Make sure unit is NOT powered up if it is turn it OFF Set DIP switches to desired time delay Install failsafes making sure screw terminals are not loose hand tighten only Install igniter electric match or actuator making sure screw terminals are not loose hand tighten only Install a fresh 9V battery making sure screw terminals are not loose hand tighten only Reversing the polarity of the battery can damage the XCET 1 when installing the battery refer to figure 1 for the correct polarity If green LED is ON turn switch to OFF position if you will not be immediately launching your rocket This saves on the life of the battery When you are ready to launch turn switch to ON position the XCET
9. iters make sure unit is powered off Before cycling power ON verify that both fail safes are ARMED to prevent accidental discharge l Product Disclaimer and Limit of Liability Since the use and application of this equipment are beyond our control the purchaser or user agrees to hold XAVIEN and their agents from any and all legal claims demands actions debts liabilities judgments costs and attorney fees arising out of claimed on account of or in any manner predicted upon loss or damage to property of or injuries to or death of any and all persons arising out of the use of this equipment Due to the nature of electronic devices the application and environments for these devices the possibility of failure can never be completely ruled out It is the responsibility of the purchaser or user of this equipment to properly test and simulate the actual conditions under which the device is intended to be used to ensure the highest degree of reliability safety and success Product Warranty The XCET 1 has a warranty of 1 year starting from date of purchase as long as all the guidelines have been followed that are outlined is this document Any improper use or carelessness on the part of user will void the warranty If your unit has problems send an email to RMA XAVIEN COM Once this has been done XAVIEN will send you a return material authorization RMA number that you need to include with your unit DO NOT send any units
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