AP41 OPERATORS MANUAL USERS MANUAL INTRODUCTION The AP41 is a multiple output, calendar programmable solid state time switch. It is used for switching electric circuits according to a pre-set time and date program. The AP41 AUTO PROMPTING alpha-numeric display makes programming fast and simple. It is designed to control lighting, heating, ventilating, air conditioning and security systems with a variety of programming capabilities, ranging from a simple 7 day plan to a more complex plan utilizing its powerful, alternate annual programming features. Four output relays are available. The output relays are rated at 120 VAC, 15 amps resistive load. The outputs can be programmed for momentary operation such as required for ringing bells in schools, churches or industrial facilities. SPECIFICATIONS PROGRAMMING CAPABILITIES AUTO PROMPTING DISPLAY - Provides display information to guide the operator during programming. From a cold start it will take the operator from setting time clear through setting the basic program steps. 200 POWERFUL PROGRAM STEPS - The AP41 has 1 basic 7 day plan and 9 alternate 7 day plans that can be scheduled on an annual basis. There is a total of 10 plans, each having 20 program steps. Each step can be programmed for the specific day of the week or for all 5 weekdays, or for both weekend days or for everyday of the week. 20 ANNUAL PLANS - Each annual plan has a starting and ending date, and an associated Alternate Plan. This feature can be used to schedule any 1 of the 9 alternate, 7 day plans to be used by the AP41. PROGRAMMABLE DAYLIGHT SAVINGS TIME ADJUSTMENT - The AP41 can be programmed to automatically adjust its time for Daylight savings time changes according to U. S. law, even if the law changes. AUTOMATIC LEAP YEAR COMPENSTATION MANUAL OVERRIDE - The output relays can be manually energized or de-energized from the keyboard. The manual override remains in effect until the next programmed step occurs. PULSED OUTPUT - The outputs can be programmed individually or as a group to operate as momentary contacts, programmable from 1 to 9 seconds. PROGRAM TRANSFER - The program and time from one AP41 can be transferred to another AP41. PROGRAM PRINTOUT - The AP41 program can be printed on a standard parallel printer using the AP41/81 Printer Interface Module. ELECTRICAL POWER REQUIRMENTS - 95VAC to 135VAC, 60 HZ, 5 VA maximum. OUTPUTS - 4 SPDT relays rated at 15 A resistive at 120 VAC. WIRING - Terminal Block or optional 16 Pin circular plastic connector with mating 6 ft. wiring harness. POWER FAIL BACKUP Programs and time keeping are maintained for 48 hours on a rechargeable capacitive backup system in the event of a power failure. Outputs and display are disabled during backup. The AP41 resumes normal operation when power returns. ACCURACY TIME KEEPING - Synchronous with the AC power line. During a power failure it is quartz crystal controlled with an accuracy of +/- .005% throughout its full temperature range. PROGRAMMED EVENTS - On/Off events are programmable with a one minute resolution and occur at the zero second of that minute. PHYSICAL DIMENSIONS - 4 3/4" W x 8" H x 2" D. WEIGHT - Aproximately 3 lbs. MOUNTING - Mounting holes provided. See installation. OPERATING TEMPERATURE RANGE - -30 to +74 C. INSTALLATION Mount the AP41 indoors or in a weather tight enclosure for outdoor installations. TO MOUNT Be sure the AP41 is disconnected from the power source. Remove the AP41 cover by removing the screws at the top and bottom of the enclosure. There are 3 mounting holes, 1 at the top and two at the bottom that are easily accessable. Additional mounting holes are available if you remove the AP41 PCB assembly from the case. To remove the AP41 PCB from the case, remove the connector bracket at the bottom and the 4 corner screws on the AP41 PCB. ELECTRICAL CONNECTIONS All wiring connections are made at the clearly marked terminal block located on the AP41 PCB assembly. Be sure the AP41 case is grounded by mounting it to a suitable, grounded back plane or by providing a separate ground wire to the case. For AP41's with the optional connector and wiring harness, refer to the wiring table below. WIRING TABLE (optional connector and wiring harness) PIN# COLOR FUNCTION * UCF is a Universal Control Feature used only on custom AP41's. DESCRIPTION ALPHA-NUMERIC DISPLAY - Used for displaying time, day, date, and output status, and for displaying information during programming or reviewing stored programs. KEYBOARD - Many of the AP41 keys serve multiple functions. Those keys are clearly labeled with their functions to the side and top of the key. They cannot be used incorrectly as the display will AUTO PROMPT the user as to which key to press. AM/ON KEY - Used for setting the time to AM when in the time set or programming modes and for entering the manual control mode. PM KEY - Used for setting the time to PM when in the time set or programming modes. TIME KEY - Used for entering the time set mode. ANNUAL KEY - Used for entering the annual programming mode and for stepping through the stored annual plan for review. The annual plan contains the schedule for the alternate basic plans in calendar schedule form. BASIC KEY - Used for entering the basic plan programming mode and for stepping through the stored basic plans for review. The basic plans contain the daily timed events instructions. CLEAR KEY - Used for clearing all annual plans and or basic plans. DATE KEY - Used for entering the set date mode for entering date or reviewing the date. EXIT KEY - Used for exiting any of the set time, set date or program modes. OFF KEY - Used for setting the pulse to OFF when in the pulse programming mode. ENTER KEY - Used for entering all commands or for stepping through any set time, set date or program data entry. DST KEY - Used for entering the set Daylight Savings Time program mode. DAY KEY - Used for setting the day in the set time and program modes. Also used for entering the set day mode. PROGRAMMING INSTRUCTIONS AUTO PROMPT DISPLAY - The AP41 has a feature called AUTO PROMPT that guides the operator when programming the unit. For the most part the operator merely has to follow the display as the AP41 advances through the program modes. On a cold start (from a discharged backup system) the AP41 will advance through a sequence of all the necessary settings including the basic plans. You may exit this sequence if desired and the unit will advance to the time display. THE AP41 CURSOR - On many of the AP41 display messages you will see a flashing square character called the cursor. The cursor indicates that you may now enter or change the data at that position of the display. ENTERING DATA - As data is entered into the AP41, it constantly checks for a valid entry. For example, you cannot enter 13 for a month when setting the date. After entering valid data to a postion on the display, the cursor will advance to the next position. If you have tried to enter invalid data, the cursor will remain at the same position, indicating you must re-enter the data. Simply re-enter the data on top of the existing data and press ENTER. Generally data is entered two digits at a time. EXITING THE AUTO PROMPT SEQUENCES Any time during a set time, date or programming mode, you may wish to exit the sequence.. Simply press the EXIT key. The AP41 will advance to the time display. From this display you may enter any of the sequences manually. See section on REVIEWING OR EDITING TIME AND PROGRAMS. GETTING STARTED Upon first applying power to the AP41 the display will come up with the first Auto Prompt message. If this message does not appear, go to the REVIEWING OR EDITING TIME AND PROGRAMS section. UNIT POWER FAIL Press "3" key Simply press key 3. The display will prompt with the set time display. Time? 00:00 AM Hrs. (HH),ENTER You will notice that every numeric field is zero. On a cold start all memory is cleared in the AP41, including time, date, and program steps. The cursor will be flashing in the hours digits. The bottom line indicates that you need to enter 2 digits (HH) for hours. Simply enter the hours then press the ENTER key. Two digits are required for the hours. Example: 01 instead of 1. If you try to enter an invalid number for the hours, the cursor will remain flashing in the hours digits. You must then re-enter the correct hours. If you have entered a valid number for the hours, the cursor will advance to the minutes digits. The bottom line again gives you additional information on how to enter the minutes. Now enter the desired two digits for the minutes and press ENTER. The cursor will advance to the AM position. Press the AM or PM key as desired and then press ENTER. Time keeping begins the instant you press ENTER. Time can be accurately set to the second by pressing the ENTER key at the instant you desire. After the time is set, the AP41 display will advance to the set date display. The bottom line of each display will instruct the operator on how to enter the data each time. Date? 00-00-00 Month (MM),ENTER The cursor will be flashing in the months position. Enter the desired two digits for the month and press ENTER. The cursor will advance to the days position. Enter the desired two digits for the days and press ENTER. The cursor will advance to the years position. Enter the desired two digits for the year and press ENTER. After the year is entered the display will advance to the set day display. Day? Sun DAY key, ENTER The cursor will be flashing on the S in Sun. Just follow the prompting provided on the display. Press the DAY key until the desired day appears on the display and then press ENTER. The display will then advance to the Daylight Savings Time display. S DST M=00 SUN=L F DST M=00 SUN=L The top line is for the Spring DST and the bottom line is for the Fall DST. The S indicates the Spring DST and the F indicates the Fall DST. The cursor will be flashing in the month position. Enter the desired two digits for the month you wish the Spring DST adjustment to be made (04 for current US law) and then press ENTER. The valid Spring months are 00, 03, 04, and 05. Enter 00 for the month if you wish to not use the automatic DST feature and the AP41 will advance to the next mode, Basic Plan Program mode. After a valid month is entered, the cursor will advance to the L in the Sunday position. Enter a 1 for the first Sunday (current US law), 2 for the second, 3 for the third, 4 for the fourth or L for the last Sunday. L is the same as key 5 (JKL). The change will be made at 02:00 AM on the Sunday you choose. After the Spring DST data is entered, the cursor will advance to the Fall DST line. If you have entered a Spring DST, you must enter a Fall DST as well. Failure to do so will erase the Spring DST and then there will be no DST compensation. In the same manner as the Spring DST, enter the desired month and Sunday you wish the adjustment to be made. Current US law for Fall DST is the last Sunday in October. So enter 10 for the month and L (key 5) for the Sunday. The valid months for the Fall DST are 09, 10, and 11. The valid Sundays for the Fall DST are 1, 2, 3, 4 and L. L is the same as key 5 (JKL). The change will be made at 02:00 AM on the Sunday you choose. After a valid Fall DST has been entered, the AP41 will advance to the next mode, the Basic Plan Program mode. This mode allows the operator to program the daily timed events for basic plan 0. The display will look as follows: BASIC Plan #0 Step #00 The cursor will be flashing on the zero for plan #0. Plan #0 is the first of 10 Basic Plans, each of which contains a 7 day plan. Plan #0 is the main 7 day plan and plans 1 through 9 are alternate, 7 day plans that can be scheduled on an annual basis (more on this in the Annual Programming sections). Press ENTER to select plan #0. The cursor moves to the Step #00 position. Step #00 is the first step of 20 steps in plan #0. Press ENTER to select step #00 and the display will read as follows: #00 WDY 00:00 AM RELAYS ---- The #00 indicates that this is step 00 being displayed. The cursor will be flashing on the W of WDY. WDY stands for weekday. Program steps may be programmed for individual days, such as Mon or Tue, or for groups of days such as WDY for weekdays (Mon through Fri), EDY for everyday (Sun through Sat.) or WND for weekends (Sat & Sun). Press the DAY key to advance to the desired day or group of days. The display will update as you press the DAY key. Once the desired day or group of days is displayed, press ENTER. The display will advance to the hours position. Enter the desired two digit hour at which this step is to be activated and press ENTER. The display will advance to the the minutes position. Enter the desired two digits for minutes and press ENTER. The display will advance to the AM/PM position. Press the AM or PM key as desired and then ENTER. The display will advance to the first position after the word RELAY. Enter the number of the relays you wish to be energized by this program step. The relay numbers will appear on the bottom line as you press the appropriate number. Pressing the same number again will remove the relay number from the bottom line. This is useful when editing a program step. The following display shows an example of all relays being turned ON on Weekdays at 10:00 AM. #00 WDY 10:00 AM Relays 1234 When the desired relay numbers appear on the bottom line, press ENTER. The first step 00 is now programmed. The display will be prompting you for the next step 01. #01 WDY 00:00 AM Relays -- Enter the data for program step 01 the same as you did for step 00. Continue on until all your program steps are entered up to step 19 (the 20th step) or until you have entered the last step of your program. After entering your last step, press EXIT and the AP41 will advance to the following display: BASIC Plan #1 Step #00 The AP41 is now prompting you to enter the first of 9 alternate plans, plan #1, if desired. Plans 1 through 9 are entered the same as plan 0. If you are not using alternate plans 1 through 9, or if you have just entered your last alternate plan, press EXIT. The AP41 will advance to the main time display: Mon 01:25:33 PM Relays: 1-4 The main time display shows the current time with seconds and the status of the relay outputs. The above display shows relays 1 and 4 on. REVIEWING OR EDITING TIME AND PROGRAMS This section will explain how to change or review the existing time, date or programs previously stored or to totally program the unit if you have exited from the auto prompted sequences. EDITING TIME You must be in the time display before you can enter time. Press the EXIT key to be sure. The display should look similar to the following: Mon 01:18 PM OFF Relays 1234 Press the TIME key. The display will respond with: Command? 03 Press ENTER Press ENTER. The display will respond with: Time? 12:34 AM Hrs. (HH),ENTER It may be showing the correct time or some other incorrect time previously stored. It may even be showing all 0's if you exited the auto prompt sequence. The cursor will be flashing in the hours position. The bottom line will give you additional information on how to enter the data. Enter the desired two digit number for hours and press ENTER. If the hours are correct simply press ENTER. The cursor will move to the minutes position. Do not press EXIT part way through editing the time, date or any program steps unless you want to abort the editing. If you exit part way through, any changes made prior to the current position will be ignored. Enter the desired two digits for the minutes and press ENTER. The cursor will move to the AM/PM position. Before pressing ENTER, you may wish to synchronize this AP41 to some other reference clock. The instant you press ENTER, the time keeping will begin. Therefore to synchronize with another reference clock, wait until it is ready to change to the desired time and press ENTER at that instant. REVIEWING OR EDITING THE DATE You must be in the time display in order to enter the date. Press The DATE key. The display will respond with: Command? 0D Press ENTER Press ENTER. The display will respond with: Date? 09-22-87 Month (MM),ENTER It may be showing the correct date or some other date stored previously. It may even be showing all 0's if you exited from the auto promt sequence. If you just wanted to review the date you may EXIT. The cursor will be flashing in the month's position. The bottom line will give you additional information on how to enter the data. Enter the desired two digit number for the month and press ENTER. If the correct two digits are already there, simply press ENTER. The cursor will move to the day position. Enter the desired two digits for the day and press ENTER. The cursor will move to the year position. Enter the desired two digits for the year and press ENTER. The AP41 will go back to the time display. To review your entry press the DATE key and ENTER. The date display will appear. You can edit the date again if you wish or press EXIT to return to the time display. Remember, If you edit any part of the time, date or any program steps, you must not exit. Press ENTER until all positions of the display have been edited or you have accepted the default information in each display. EDITING THE DAY You must be in the time display. Press the DAY key. The display will respond with: Command? 04 Press ENTER Press ENTER. The display will respond with: Day? Sun DAY key, ENTER It may be showing the correct day or some other day stored previously. Press the DAY key until the desired day is shown on the display and then press ENTER. The display will return to the time display. REVIEWING OR EDITING THE PULSE The pulse is normally set to OFF for programming steady state ON and OFF events. A pulsed output may be desired for applications requiring a momentary output such as ringing school bells. You must be in the time display. Press key 5. The display will respond with: Command? 05 Press ENTER Press ENTER. Pulse = OFF Relays -- If you just wanted to review the pulse, you may EXIT. The cursor will be flashing on the "O" in OFF indicating that you may change the pulse. If pulsed output is not desired, press OFF and then ENTER. The AP41 will return to the main time display. If pulsed output is desired on 1 or more output relays, enter the number of seconds duration for this pulse from 1 to 9 seconds and press ENTER. Pulse= 3 seconds Relays 1234 The cursor will move to the first position after the word relay. Simply enter the number of the relay or relays to pulse. The display above shows an example of all 4 relays set to pulse for 3 seconds. REVIEWING OR EDITING THE DAYLIGHT SAVING TIME PROGRAM You must be in the time display. Press the DST key. The display will respond with: Command? 07 Press ENTER Press ENTER. The display will respond with: S DST 00 M SUN = L F DST 00 M SUN = L If you just wanted to review dst, you may EXIT. The top line is for the Spring DST and the bottom line is for the Fall DST. The S indicates the Spring DST and the F indicates the Fall DST. The cursor will be flashing in the month position. Enter the desired two digits for the month you wish the Spring DST adjustment to be made (04 for current US law) and then press ENTER. The valid Spring months are 00, 03, 04, and 05. Enter 00 for the month if you wish to not use the automatic DST feature and the AP41 will return to the time display. After a valid month is entered, the cursor will advance to the L in the Sunday position. Enter a 1 for the first Sunday (current US law), 2 for the second, 3 for the third, 4 for the fourth or L for the last Sunday. L is the same as key 5 (JKL). The change will be made at 02:00 AM on the Sunday you choose. After the Spring DST data is entered, the cursor will advance to the Fall DST line. If you have entered a Spring DST, you must enter a Fall DST as well. Failure to do so will erase the Spring DST and then there will be no DST compensation. In the same manner as the Spring DST, enter the desired month and Sunday you wish the adjustment to be made. Current US law for Fall DST is the last Sunday in October. So enter 10 for the month and L (key 5) for the Sunday. The valid months for the Fall DST are 09, 10, and 11. The valid Sundays for the Fall DST are 1, 2, 3, 4 and L. L is the same as key 5 (JKL). The change will be made at 02:00 AM on the Sunday you choose. REVIEWING OR EDITING THE BASIC PLAN PROGRAM If the basic program was not entered during the cold start auto prompt sequence, it can be entered by entering the basic program mode. This mode allows the operator to program the daily timed events. Press BASIC. The display will respond with: Command? 0B Press ENTER Press ENTER. The display will respond with: BASIC Plan #0 Step #00 The cursor will be flashing on the zero for plan #0. Plan #0 is the first of 10 Basic Plans, each of which contains a 7 day plan. Plan #0 is the main 7 day plan and plans 1 through 9 are alternate, 7 day plans that can be scheduled on an annual basis (more on this in the Annual Programming sections). Enter the # of the plan you wish to review or edit. Press ENTER to select plan #0. The cursor moves to the Step #00 position. Step #00 is the first step of 20 steps in plan #0. Enter the step # you wish to review or edit. Press ENTER to select step #00 and the display will read as follows: #00 WDY 00:00 AM RELAYS ---- The #00 indicates that this is step 00 being displayed. The cursor will be flashing on the W of WDY. WDY stands for weekday. Program steps may be programmed for individual days, such as Mon or Tue, or for groups of days such as WDY for weekdays (Mon through Fri), EDY for everyday (Sun through Sat.) or WND for weekends (Sat & Sun). Press the DAY key to advance to the desired day or group of days. The display will update as you press the DAY key. Once the desired day or group of days is displayed, press ENTER. The display will advance to the hours position. Enter the desired two digit hour at which this step is to be activated and press ENTER. The display will advance to the the minutes position. Enter the desired two digits for minutes and press ENTER. The display will advance to the AM/PM position. Press the AM or PM key as desired and then ENTER. The display will advance to the first position after the word RELAY. Enter the number of the relays you wish to be energized by this program step. The relay numbers will appear on the bottom line as you press the appropriate number. Pressing the same number again will remove the relay number from the bottom line. This is useful when editing a program step. The following display shows an example of all relays being turned ON on Weekdays at 10:00 AM. #00 WDY 10:00 AM Relays 1234 When the desired relay numbers appear on the bottom line, press ENTER. The first step 00 is now programmed. The display will be prompting you for the next step 01. #01 WDY 00:00 AM Relays -- Enter the data for program step 01 the same as you did for step 00. Continue on until all your program steps are entered up to step 19 (the 20th step) or until you have entered the last step of your program. After entering your last step, press EXIT and the AP41 will advance to the following display: BASIC Plan #1 Step #00 The AP41 is now prompting you to enter the first of 9 alternate plans, plan #1, if desired. Plans 1 through 9 are entered the same as plan 0. If you are not using alternate plans 1 through 9, or if you have just entered your last alternate plan, press EXIT. The AP41 will advance to the main time display: CLEARING PROGRAM STEPS To clear a program step press BASIC, then ENTER. The display will be: BASIC Plan #0 Step #00 The display will be prompting you for a plan #. Choose the basic plan in which the step you wish to clear is located, then press ENTER. The display will then be prompting you for a step #. Choose the # of the step you wish to clear, then press ENTER. The chosen step and its program contents will be displayed. The cursor will be in the days position. Press ENTER. The cursor will go to the hours position. Enter 00 for the hours to clear this specific step and press ENTER. The display will moved to the next step allowing you to edit it as well. If you are finished press EXIT. The display will read: BASIC Plan #1 Step #00 You can now choose another plan to edit or press EXIT again to return to the main time display. If you wish to erase all the program steps see the section on Clearing the Annual And Basic Programs. REVIEWING OR EDITING THE ANNUAL PLAN PROGRAM The annual program allows the AP41 to be programmed to schedule any 1 of the 9 alternate basic plans. This feature is useful for applications that require a different 7 day plan at different times into the future. There are 20 Annual Program Plans, each of which has a starting and ending date, and an associated, alternate Basic Plan. The selected alternate plan will begin at 12:00 AM on the start date and will end at 12:00 AM on the day after the end date. Basic Plan 0 takes over at the end of any Alternate plan. To enter the annual program mode press the ANNUAL key. The display will respond with: Command? 0A Press ENTER Press ENTER. The display will respond with: ANNUAL #00 BASIC #1 The cursor will be prompting for an Annual Plan number. #00 is the first Annual Plan. Press ENTER. The cursor will then prompt for the desired Basic Plan to select with this Annual. Enter the desired Basic Plan number, then press ENTER. The display will read: Start? 00-00-00 End? 00-00-00 There may be a date already in the start date from a previous program. It is not necessary to erase this old date. You simply enter new data in each field. To erase an Annual Plan see sections Clearing the Annual and Basic Program, and Clearing an Annual Plan. The cursor will be flashing in the months position. Enter the desired two digits for the month at which this Annual Plan will start and press ENTER. The display will advance to the days position. Enter the desired two digits for the day and press ENTER. The display will advance to the years position. Enter the desired two digits for the year and press enter. The cursor will advance to the end date line. Now you enter the end date in the same manner as the start date. If your Annual Plan is only for one day, you do not need to enter an end date. Just press ENTER to enter the 00 in the months and the display will advance to the next Annual Plan. ANNUAL #01 BASIC #1 Repeat the same procedure for Annual 01 as you did for Annual 00, or press EXIT to return to the time display. CLEARING AN ANNUAL PLAN If you need to clear an Annual Plan, press the ANNUAL key and then ENTER. The display will respond with: ANNUAL #00 BASIC #1 Enter the desired Annual Plan number you wish to clear and press ENTER twice. The display will show the contents of that Annual Plan. Start? 12-19-90 End? 01-01-91 Enter 00 for the Start month and press ENTER. The plan will be cleared. There is no need to clear the end date once the start date has been cleared. If you wish to clear all the Annual Plans see the section on Clearing the Annual and Basic Programs. If you are programming the clock from a cold start, the annual and basic program steps will be cleared already. If you are re-programming a previously programmed clock you will need to erase any previous programs as they could conflict with your new program. CLEARING THE ANNUAL AND BASIC PROGRAMS To clear all program steps, press the CLEAR key. The display will respond with: Command? 0C Press ENTER Press ENTER. The display will respond with: Clear buffers: A=ANNUAL B=BASIC You have the option now to clear either the annual or the basic program. To clear the annual, press A, the same as the ANNUAL key. The display will return to the time display. If it was the basic program you wished to clear, press the B or BASIC key instead of the A. Since there are 10 basic plans the AP41 will give you the option to clear any 1 or all of the basic plans. See the following display: Press 0-9 or "A" for all sets At this point you enter the desired Basic Plan number you wish to clear or press "A" to clear all Basic Plans. If you wish to clear both the annual and basic programs or more than 1 basic plan, repeat the process a second time. Only one can be cleared at a time. SPECIAL FUNCTIONS MANUAL OPERATION OF THE OUTPUT RELAYS The output relays can be manually controlled from the the keyboard. Before doing this be sure it is okay to operate the loads connected to the AP41. Also be sure the AP41 is in the time display mode. To turn the output relays on press the ON key. The display will respond with: Command? 01 Press ENTER Press ENTER. The display will read: Manual Control Relays: ---- Choose the desired relays that you would like to manually control by keying in the number of the respective relays. You will notice the numbers of the relays chosen will show up on the bottom line of the display. If a relay number is shown on the bottom line that you do not wish to turn on, you can remove it by keying that number in. You will notice that relay number is no longer on the display. Once the desired relays are showing on the display, press ENTER. The output relays chosen will be energized and the display will return to the time display. They will remain on until the next program step instructs them to turn off or on, or until they are manually operated again. PROGRAM TRANSFER The Program Transfer feature allows you to transfer time and program from one AP41 to another. It is useful for applications where several units will have the same or a similar program, or where closely synchronized times are required from unit to unit. A transfer cable is required. To transfer, connect the transfer cable from the I/O port of one AP41 to the other. Press 78 and then ENTER on the master unit. The display will read: Connect Cable Then press ENTER If you have not already connected the cable, do so now then press ENTER. The displays will read: MASTER UNIT: SLAVE UNIT: Sending Program Storing Program * Please Wait * * Please Wait * After transfer is complete (about 10 seconds), both units will return to the time display. If transfer was unsucessful the master unit will display the following: TRANSFER ERROR Press "EXIT" PROGRAM PRINTOUT The program printout feature allows the AP41 to dump its program contents to a standard parallel printer using the AP41/81 Printer Interface Module. This works similar to the Transfer feature. To print from the AP41, connect the Printer Interface Adapter to your parallel printer and connect the tranfer cable from AP41 I/O port to the Printer Adapter. Enter 91 then ENTER. The display will read: Connect Printer, Then press ENTER Press ENTER and the display will read: Printing Report, Please Wait . . . If the printout is unsucessful the AP41 will give a TRANSFER ERROR message. Check your cables and be sure the printer was online. DISPLAY LIGHT The AP41 has an optional back lighted display feature. To turn the backlight ON, press 93 and ENTER. To turn it back OFF do the same. DISPLAY BLANKING The AP41 display will automatically blank if the keyboard has not been used for 5 minutes or more. To override this feature press 98 and ENTER. To change it back press 98 and ENTER again. STATUS The AP41 has a status check capability. Press 90 then ENTER to check status. The display will read: Unit Status: T=N B=0 A=XX BK=Y T status is for factory use only. It should always be "N" B status tells you which Basic Plan is in effect. A status tells you which Annual Plan is in effect. XX indicates no Annual Plan in use at this time. BK status tells you if the display blanking is on or off. SOFTWARE VERSION To check the version of the software installed in your AP41, press 99 and ENTER. The display will read: AP41 Time Switch Version 1.XX After 3 seconds the display will return to the time display. FORCING A RESTART For training purposes you main want to demonstrate the cold start AUTO PROMPT sequence to a new operator and the backup system is charged, preventing a cold start. Once this command is entered all programming in the unit will be erased. To force a cold start press 77 and ENTER. The display will respond with: Command? 77 Press ENTER Press ENTER. the display will respond with the unit software version for 3 seconds and then: UNIT POWER FAIL Press "3" key After pressing 3, the AP41 will begin with the set time display and auto prompt the operator through all program sequence automatically. See section on Getting Started. PROGRAMMING SUMMARY Read the sections on Programming Instructions before using the PROGRAMMING SUMMARY. SET TIME - Press TIME key then ENTER. Enter the hours, press ENTER. Enter the minutes, press ENTER. Press AM or PM, press ENTER. Timing begins the instant you press ENTER after entering the AM or PM. SET DATE - Press DATE key then ENTER. Enter month, press ENTER. Enter day, press ENTER. Enter year, press ENTER. SET DAY - Press the DAY key then ENTER. Press the DAY key until desired day is displayed, then press ENTER. SET DST DATES - Press DST key then ENTER. Enter month for Spring DST, press ENTER. Enter the desired Sunday for Spring DST, press ENTER. Enter month for Fall DST, press ENTER. Enter the desired Sunday for Fall DST, press ENTER. ENTERING THE BASIC PLAN PROGRAM - Press the BASIC key then ENTER. Enter the desired step number, press ENTER. Press the DAY key until desired day or group of days is displayed, press ENTER. Enter the hours for this step, press ENTER. Enter the minutes for this step, press ENTER. Press AM or PM, press ENTER. Enter the desired relays to turn ON, press ENTER. The step is now programmed and ready for the next step. Repeat this process until entire program is entered then press EXIT. ENTERING THE ANNUAL PLAN PROGRAM - Press the ANNUAL key then ENTER. Enter the desired Annual Plan number, press ENTER. Enter the start month, press ENTER. Enter the start day, press ENTER. Enter the start year, press ENTER. Enter the end month, press ENTER. Enter the end day, press ENTER. Enter the end year, press ENTER. The first skip plan is now programmed and ready for the next skip plan. Repeat this process until entire skip plan program is emtered, then press EXIT. MANUAL OPERATION - Press ON then ENTER. Enter desired relays to mannually control then press ENTER. The chosen relays will energize. CLEARING THE ANNUAL AND BASIC PROGRAMS - Press CLEAR then ENTER. Press ANNUAL (A) to clear annual program or BASIC (B) to clear the basic program. Choose the desired sets buffer to clear. REVIEWING BASIC PLAN PROGRAM - Press BASIC key then ENTER. Press BASIC key again repeatedly to review each step. Press EXIT when done. REVIEWING THE ANNUAL PLAN PROGRAM - Press ANNUAL key then ENTER. Press ANNUAL key again repeatedly to review each skip plan. WARRANTY SERVICE POLICY It is reccommended that all service for the AP41 be done by the factory or by a factory authorized service representative. If you are set up to service equipment like the AP41 and desire to service it yourself, there is one caution to be aware of: Before removing or replacing any IC's, be sure the 1FD super capacitor has been totally discharged to avoid damage. Connect a jumper wire from TP2 at the top of the PCB to the GND test point, located on the lower left. It is recommended that the jumper wire be left in place until the repair is finished. ATS will provide ongoing service support in and out of warranty. Send your repairs to: Applied Technical Systems 815 King Place Shreveport, LA 71115 THEORY OF OPERATION The AP41 is a microprocessor based device. The CPU is a single chip microcontroller similar to a 6502 microprocessor. The operating software is contained in an 8K 2764 EPROM. This software is copyrighted by Applied Technical System, Shreveport, LA. Any attempts to copy it are prohibited by law. RAM is provided by a low power 6116LP (2K bytes). A real time clock chip keeps time during power failures for up to 48 hours. The AP41 uses a 2 line by 16 charater intelligent display. The CPU sends byte wide data to the display every 1/2 second. IC10 is used as a watch dog timer. In the event of a processor failure the watch dog timer will reset the processor and bring the clock up running again. Unit transfer is accomplished via the transfer port. This data transfer is a synchronous serial format. Transfer of 2K of memory takes less than 10 seconds. Time keeping is accomplished by counting 60 Hz line pulses and incrementing a software clock every second. In the event of a power failure, the RTC chip takes over the time keeping using a 32.768 Khz crystal. During a power failure time keeping functions and memory retention are via a 1 farad backup capacitor.