1. Manuals
  2. Brands
  3. Paragon Manuals
  4. Timer
  5. EL74
  6. General instructions manual

Paragon EL74 General Instructions Manual

Four channel electronic time controls
Hide thumbs
Table of Contents

Advertisement

Quick Links

http://waterheatertimer.org/Paragon-timers-and-manuals.html#EL
EL74 - Four Channel
Electronic Time Controls
General Instructions
110-708B

Advertisement

Table of Contents
loading

Related Manuals for Paragon EL74

Summary of Contents for Paragon EL74

  • Page 1 EL74 - Four Channel Electronic Time Controls General Instructions 110-708B...

  • Page 2: Table Of Contents

    Table of Contents INTRODUCTION ....3 CONFIGURATION ....19 SPECIFICATIONS .

  • Page 3: Introduction

    The control may be utilized as a 24 hour, 7 day or full year (365 day) control. The EL74 allows for the programming of 128 events. An event could be an ON, an OFF, one of four user-defined durations or one of four user-defined duty cycle patterns. In addition, up to 32 sensor events can be programmed to allow control based on temperature and light level.
  • Page 4 • 4 User-Defined Inputs - Each input can be independently defined as one of two override types, an enable input, or as one of four sensor types. • ON With Off Delay Override Input - Provides a retriggerable override input that is assignable to any combination of outputs.
  • Page 5 • 32 Sensor Events - A sensor event will control a channel based on programmable on/off sensor levels. Each sensor event can be assigned to any day or combination of days, including the three holiday schedules. • Optional Daylight Savings Correction - Programmable as a day of the month (i.e. 1st Sunday in April / last Sunday in October) •...
  • Page 6 5 seconds, 15 seconds, 30 seconds, 1 minute, 5 minutes, 10 minutes, and 15 minutes. • Momentary - The EL74 will normally be configured as maintained. The momentary option is intended for use with latching relays. An EL74 configured as momentary will only have 2 channels.

  • Page 7: Electrical

    Electrical: 1. Power Requirements - Input Voltage 24, 120, 208, 240 or 277 Vac, 50/60 Hz 2. Outputs - Four SPDT relays with contacts rated as follows: Normally Open Contacts: 20 amp resistive or inductive at 120-277 Vac 1 HP at 120 Vac 2 HP at 208-277 Vac 5 amp tungsten at 120-240 Vac 20 amp ballast at 120 Vac...
  • Page 8 3. Wiring - Relay contact terminals can accommodate 10-16 AWG. - Power input terminals can accommodate 12-18 AWG. - Sensor/override input terminals can accommodate 18-22 AWG. 4. Power Outage Carryover - The program and time of day are maintained during a power outage for a minimum of two days by means of a capacitor.

  • Page 9: Environmental

    1. Temperature - Operating: -20˚ F (-29˚ C) to 140˚ F (60˚ C) 2. Relative Humidity - 10 to 90% RH (non-condensing) 3. The EL74 should be mounted indoors in an environment that is free from excessive conta- minants such as oil, moisture and dirt.

  • Page 10: Functional Description

    FUNCTIONAL DESCRIPTION Front Panel Layout Program Header Menu TIME CONF ASTR EVNT INPT Master Reset EVNT SENS RS232...

  • Page 11: Input Connections

    Input Connections Sensor Connection: 1. red 2. yellow Input #2 3. black External Override: use RED + YEL (Use man- ual switch or isolated contacts.) CAUTION: Do not apply voltage to sensor inputs. To do so will damage control. NOTE: It is highly recommended that shield- ed cable be used for sensor and override input wiring.

  • Page 12: Keypad Description

    Keypad Description Master Reset - Clears time and program. Display will show “MEM CLR.” The reset switch is accessed by inserting a pointed object, such as a paper clip, into the reset hole to the right of the keypad. PROGRAM - This key allows the user to add, delete or change parameters (events, time, holidays, etc.).
  • Page 13 When pressed from any menu header during review, the control will move to the next menu header. When pressed from a review step, the control returns to that menu header. RUN - This key will return the control to the RUN mode. From all programming steps (excluding the override menu), the control will perform a status update and return to the RUN mode.

  • Page 14: Hierarchy Of Control

    PREVIOUS/NEXT - Moves the display selection to the previous or next program step. While in a programming step, the current item (to be modified) will be flashing. - These keys will change (increment or decrement) the current (flashing) item. The +/- keys will not work during review, except to allow a faster step-through of events, inputs and holidays.
  • Page 15 NOTES: 1. A keyboard override cannot be performed during stagger up. 2. An external override can be done during stagger up, but the stagger up sequence is still observed. 3. Status update will cancel a keyboard override or an external toggle over- ride, but will not cancel an external timed override.

  • Page 16: Programming

    Programming Programming Overview: After pressing the PROGRAM key, the EL74 will continue to control the outputs based on the events that were operating at the time the PROGRAM key was pressed. The control will not check for new events until it has gone through a status update.

  • Page 17: Memory Clear

    +/- key. When configured for momentary, relays 1 and 3 will provide the ON pulses, and relays 2 and 4 will provide the OFF pulses. An EL74 configured for momentary opera- tion will become a two-channel control. Use the NEXT key to con- tinue programming.

  • Page 18: Set Time

    Set Time Set Time header. This mode is used for setting time, date and daylight savings time. Use the NEXT key to begin programming. Program hours, minutes, seconds and day of week using the +/- key. A PM indicator is used in the 12 hour format. AM begins with midnight and PM begins with noon.

  • Page 19: Configuration

    Program the day that Daylight Savings Time ends. The control defaults to the last Sunday in October. At 2:00 AM on this day, the control’s time will go back one hour. Configuration Configuration header. This mode is used for changing the clock format, selecting stagger up, setting the lengths of the 4 durations and for programming the on/off times of the 4 duty cycle patterns.
  • Page 20 Programs the duration length for dUR1-dUR4, which are event types (see Events). These durations are programmable from 1 second to 23 hours, 59 minutes and 59 seconds. The control will not allow a duration of 0:00.00. Programs the duty cycle off time for CYC1-CYC4, which are event types (see Events).

  • Page 21: Astro

    Astro Astro header. The Astro function provides a means for controlling lights based on the changing sunrise and sunset times throughout the year without use of a photocontrol. The Astro feature does not turn loads on or off. Between sunrise and sunset the load(s) are not allowed to be on.
  • Page 22 U.S. LATITUDE CHART...
  • Page 24 World Latitude Chart...

  • Page 25: Event

    Events Events header. Up to 128 events can be programmed. Events can be an ON, an OFF, dUR1(duration), dUR2, dUR3, dUR4, CYC1 (duty cycle), CYC2, CYC3 or CYC4. An event can be assigned to any channel. Each event can be assigned to any day or combina- tion of days including the 3 holiday schedules (A, B and C).

  • Page 26: Input Configuration

    Input Configuration Input header. Each input can be individually configured as a retriggerable override, a toggle override, an enabler or as one of four sensor types. Use the NEXT key to begin programming. Choose the desired input type. NONE: not used On\d: On with off delay override OVr: Toggle override ENb: Enabler input...
  • Page 27 This screen is used for setting the on time when the input is configured as an OVr (toggle) override type. The on time is pro- grammable from 0 seconds to 23 hours, 59 minutes and 59 sec- onds. When this on time is set to 0:00.00, the override functions as a toggle on/toggle off override.

  • Page 28: Sensor Event

    Sensor Events Sensor Events header. Up to 32 sensor events can be pro- grammed. A sensor event can be assigned to any channel. Each sensor event can be assigned to any day or combination of days including the 3 holiday schedules (A, B and C). Use the NEXT key to begin programming.

  • Page 29: Holiday

    Program the turn off setpoint. Holiday Holiday header. The four holiday types with their priorities are as follows: SPEC (special) - highest priority DATE (month/date) - 2nd highest priority D/WK (day of week) - 3rd highest priority SPAN (duration) - lowest priority To demonstrate the use of priorities, assume that Thanksgiving Break (SPEC) is programmed as a holiday schedule B.
  • Page 30 Special Holiday type. Each of 6 special holidays can either be assigned as one of the 3 holiday schedules A, B or C or not selected. Press the NEXT key to program the special holidays (starting with Good Friday) or press the +/- keys to move to a different holiday type (e.g.
  • Page 31 Boxing Day Victoria Day Holiday Date type. Up to 10 date type holidays can be pro- grammed. Press the NEXT key to program the date type holi- days or press the +/- keys to move to a different holiday type (e.g.
  • Page 32 Day of Week Holiday type. Up to 10 days of week type holidays can be programmed. Examples of day of week type holidays are: 1st Monday in September Last Monday in May Press the NEXT key to program the day of week type holidays or press the +/- keys to move to a different holiday type (e.g.
  • Page 33 Holiday Span type. Up to 10 holiday durations can be programmed. A holiday duration is defined with a beginning date and an ending date. A holiday duration can be programmed as a single day holiday by making the ending date the same as the beginning date. It is OK to have the holiday duration extend into the next year.

  • Page 34: Override

    Override Keyboard Override header. This mode is reached by pressing the OVERRIDE key from the RUN mode. Press the NEXT key to con- tinue in this mode or press the RUN key to exit this mode without affecting a change to the load status. This screen shows the status of all channels on the bottom line of the display.

  • Page 35: Run

    The RUN mode is the normal operating mode. In the RUN mode the current time and day are shown. If today is a holiday, the active holiday schedule is also shown. Channel status is shown on the bottom line. The channel number is shown if that channel is on.

  • Page 36: Accessories

    Temperature Sensor Model TS3/OAT is a sealed, outdoor solid-state temperature sensor designed to interface directly with the EL74. Specifications: Operating temperature: -40˚ F to 167˚ F (-40˚ C to 75˚ C), Resolution: 1.5˚ F (1˚ C) Model TS3/SAT is an unsealed, indoor solid-state temperature sensor designed to interface directly with the EL74.

  • Page 37: Light Sensor

    Light Sensor Model LS-R is a solid-state light sensor designed to interface directly with the EL74. It pro- vides a relative light level to the control (0-100 L). Computer Software The Pecosoft.EL software program provides a quick and easy method of programming and reviewing the EL74 from a personal computer.

  • Page 38: Application Examples

    Application Examples Example No. 1: Objective: To control an air conditioner to operate at 73˚ F from 8:00 AM to 12:00 PM and to operate at 77˚ F from 12:00 PM to 5:00 PM on Monday through Friday. On nights and weekends the air conditioner will be off.
  • Page 39 Programming: STEP DESCRIPTION RESET Clears control’s memory. Control is finished initializing when # stops flashing (about 6 seconds). NEXT Display shows MAINtAin (maintained relay operation). PROGRAM Display shows TIME header. NEXT,+,- Use these keys to set time, date and Daylight Savings Time information.
  • Page 40 STEP DESCRIPTION NEXT MON is flashing. NO is displayed. Change NO to YES. Step through remaining days and select YES for TUE, WED, THU, FRI and HOLIDAY A. PROGRAM Advance to INPT (configure inputs) header. NEXT 1st input is shown with input # flashing. NEXT Input type is flashing.
  • Page 41 STEP DESCRIPTION NEXT Hours are flashing. Roll hours to 8 AM (PM indicator is not displayed). NEXT Minutes are flashing. 00 is desired value. NEXT SUN is flashing, NO is displayed. Step through the days to select YES for MON, TUE, WED, THU and FRI. NEXT ON is displayed with the on setpoint flashing.
  • Page 42 STEP DESCRIPTION Select SPAN (holiday duration) header. NEXT First holiday duration is shown with holiday # flashing. NEXT Holiday start is shown with month flashing. Roll to OCT (October). NEXT Holiday start date is flashing. 01 is the desired date. NEXT Holiday end month is flashing.
  • Page 43 Example No. 2 Objective: To control lighting circuits using latching relays. The lights are to turn on at sunset and turn off at 11:00 PM. The lights are also to turn on at 4:00 AM and turn off at sunrise. This is to occur seven days a week.
  • Page 44 Programming: STEP DESCRIPTION RESET Clears control’s memory. Control is finished initializing when # stops flashing (about 6 seconds). NEXT Display shows MAINtAin (maintained relay operation). Toggle to MOMNtARY (momentary relay operation). PROGRAM Display shows TIME header. NEXT,+,- Use these keys to set time, date and Daylight Savings Time information. PROGRAM Press PROGRAM key to step through headers until ASTR (astro header) is reached.
  • Page 45 STEP DESCRIPTION NEXT Sunset minutes are flashing. Set to today’s sunset minutes. NEXT LATT N-10º is displayed (latitude 10º north). Roll to the desired latitude. NEXT Displays CHAN 1 NO. Change NO to YES to assign astro to Channel 1. PROGRAM Press PROGRAM key to step through headers until EVNT (event header) is reached.
  • Page 46 STEP DESCRIPTION NEXT SUN is flashing. NO is displayed. Change NO to YES to assign this ON event to Sunday. NEXT,+ Assign this ON event to MON - SAT. NEXT,+,- Second event is shown with event # flashing. Program this second event as an OFF at 11:00 PM for SUN - SAT.
  • Page 47 Example No. 3 Operation of Enabler Input...
  • Page 48 Example No. 4 Operation of On\d (On with off delay) override input Assume that off delay time is programmed for 1 hour. Also assume that the channel’s pro- grammed state is off.
  • Page 49 Example No. 5 Operation of OVr (toggle) override input Assume that the channel is currently under control of a duty cycle event. Case 1: no programmed ON time (ONt = 0:00.00) NOTES: 1. OVr can be canceled from the keyboard override mode. 2.
  • Page 50 Case 2: programmed ON time = 1 hour NOTES: 1. OVr ON cancels after 1 hour, unless OVr input is closed again which will force an override OFF. 2. OVr OFF can be canceled from the keyboard override mode. 3. OVr input is active with the closing of the input. Opening the input has no effect.
  • Page 51 Note: This device complies with Part 15 of the FCC Rules. Operation is subject to the follow- ing conditions: (1) this device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. This Class B digital apparatus meets all requirements of the Canadian Interference-Causing Equipment Regulations.

  • Page 52: Programming Worksheets

    Programming Worksheets Configuration Relay Operation: maintained / momentary Clock Format: 12 hr / 24 hr Stagger up: No/5 second/15 second/30 second/1 minute/5 minute/10 minute/15 minute Duration 1: ___:___.___ (hours:minutes.seconds) Duration 2: ___:___.___ (hours:minutes.seconds) Duration 3: ___:___.___ (hours:minutes.seconds) Duration 4: ___:___.___ (hours:minutes.seconds) Duty Cycle OFF 1: ___:___.___ (hours:minutes.seconds) Duty Cycle ON 1: ___:___.___ (hours:minutes.seconds) Duty Cycle OFF 2: ___:___.___ (hours:minutes.seconds)
  • Page 53 Duty Cycle ON 4: ___:___.___ (hours:minutes.seconds) Daylight Savings Time : yes / no (if yes) Spring (start DST): ____ ____ in ____ (i.e. 1st SUN in APR) Fall (end DST): ____ ____ in ____ (i.e. last SUN in OCT) Astro Latitude: ___ north / south Channel 1 Assignment: yes / no Channel 2 Assignment: yes / no...
  • Page 54 Events Event Type Channels 1-4 Time Day(s) ___:___ am/pm SU MO TU WE TH FR SA HA HB HC ___:___ am/pm SU MO TU WE TH FR SA HA HB HC ___:___ am/pm SU MO TU WE TH FR SA HA HB HC ___:___ am/pm SU MO TU WE TH FR SA HA HB HC ___:___ am/pm...
  • Page 55 Events Event Type Channels 1-4 Time Day(s) ___:___ am/pm SU MO TU WE TH FR SA HA HB HC ___:___ am/pm SU MO TU WE TH FR SA HA HB HC ___:___ am/pm SU MO TU WE TH FR SA HA HB HC ___:___ am/pm SU MO TU WE TH FR SA HA HB HC ___:___ am/pm...
  • Page 56 Input Configuration Input # 1 (choose one of the following): NONE On\d OFFd = __:__.__ (hr:min.sec) chan 1 = yes/no chan 2 = yes/no chan 3 = yes/no chan 4 = yes/no ONt = __:__.__ (hr:min.sec) chan 1 = yes/no chan 2 = yes/no chan 3 = yes/no chan 4 = yes/no chan 1 = yes/no chan 2 = yes/no...
  • Page 57 Input # 2 (choose one of the following): NONE On\d OFFd = __:__.__ (hr:min.sec) chan 1 = yes/no chan 2 = yes/no chan 3 = yes/no chan 4 = yes/no ONt = __:__.__ (hr:min.sec) chan 1 = yes/no chan 2 = yes/no chan 3 = yes/no chan 4 = yes/no chan 1 = yes/no chan 2 = yes/no...
  • Page 58 Input # 3 (choose one of the following): NONE On\d OFFd = __:__.__ (hr:min.sec) chan 1 = yes/no chan 2 = yes/no chan 3 = yes/no chan 4 = yes/no ONt = __:__.__ (hr:min.sec) chan 1 = yes/no chan 2 = yes/no chan 3 = yes/no chan 4 = yes/no chan 1 = yes/no chan 2 = yes/no...
  • Page 59 Input # 4 (choose one of the following): NONE On\d OFFd = __:__.__ (hr:min.sec) chan 1 = yes/no chan 2 = yes/no chan 3 = yes/no chan 4 = yes/no ONt = __:__.__ (hr:min.sec) chan 1 = yes/no chan 2 = yes/no chan 3 = yes/no chan 4 = yes/no chan 1 = yes/no chan 2 = yes/no...
  • Page 60 Sensor Events Channels Setpoints Sens. # (1-4) Time Day(s) ___:___ am/pm SU MO TU WE TH FR SA HA HB HC ___:___ am/pm SU MO TU WE TH FR SA HA HB HC ___:___ am/pm SU MO TU WE TH FR SA HA HB HC ___:___ am/pm SU MO TU WE TH FR SA HA HB HC ___:___ am/pm...
  • Page 61 Sensor Events Channels Setpoints Sens. # (1-4) Time Day(s) ___:___ am/pm SU MO TU WE TH FR SA HA HB HC ___:___ am/pm SU MO TU WE TH FR SA HA HB HC ___:___ am/pm SU MO TU WE TH FR SA HA HB HC ___:___ am/pm SU MO TU WE TH FR SA HA HB HC ___:___ am/pm...
  • Page 62 Holidays (special) Good Friday: HOL A HOL B HOL C not used Easter Sunday: HOL A HOL B HOL C not used Easter Monday: HOL A HOL B HOL C not used Thanksgiving Thu + Fri: HOL A HOL B HOL C not used Boxing Day:...
  • Page 63 Holidays (date) Holiday Schedule Month Date HOLIDAY A, B, C or NONE...
  • Page 64 Holidays (Day of week) Week Holiday Schedule 1st, 2nd, 3rd, 4th or last Date Month HOLIDAY A, B, C or NONE...
  • Page 65 Holidays (duration) Begin Holiday Schedule Month Date Month Date HOLIDAY A, B, C or NONE...
  • Page 66 NOTES...
  • Page 67 NOTES...
  • Page 68 BUT NOT LIMITED TO ANY IMPLIED WARRANTY OR MERCHANTABILITY OR FITNESS FOR ANY PAR- TICULAR PURPOSE. IN NO EVENT SHALL PARAGON BE LIABLE TO PURCHASER OR ANY THIRD PARTY FOR ANY LOSS OF PROFITS OR OTHER INCIDENTAL, CONSEQUENTIAL OR SPECIAL DAMAGES WHATSOEVER.

Table of Contents