Page 1: Table Of Contents
EL78 - Eight Channel Electronic Time Control General Instructions CONTENTS INTRODUCTION ....2 CONFIGURATION ...8 SPECIFICATIONS....2 ASTRO .
Page 2: Introduction
The control may be utilized as a 24 hour, 7 day or full year (365 day) control. The EL78 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 &...
Page 3: Electrical
5 seconds, 15 seconds, 30 seconds, 1 minute, 5 minutes, 10 minutes, and 15 minutes • Momentary - The EL78 will normally be configured as maintained. The momentary option is intended for use with latching relays. An EL78 configured as momentary will only have 4 channels.
Page 4: Environmental
1. Temperature - Operating: -20 F (-29 C) to 140 F (60 C) 2. Relative Humidity - 10 to 90% RH (non-condensing) 3. The EL78 should be mounted indoors in an environment that is free from excessive conta- minants such as oil, moisture and dirt.
Page 5: 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 6: Hierarchy Of Control
Hierarchy of Control Priority Level 1 - Stagger Up Priority Level 2 - Timed External Override Priority Level 3 - Toggle Override (keyboard and external) Priority Level 4 - External Enable Priority Level 5 - Astro Priority Level 6 - Programmed events (on, off, duration, duty cycle, sensor control) NOTES: 1.
Page 7: Programming
+/- key. When configured for momentary, relays 1, 3, 5, & 7 will provide the ON pulses, and relays 2, 4, 6, & 8 will provide the OFF pulses. An EL78 configured for momentary operation will become a four channel control. Use the NEXT key to contin- ue programming.
Page 8: Configuration
Configuration Configuration header. This mode is used for changing the clock format, selecting stag- ger up, setting the lengths of the 4 durations and for programming the on/off times of the 4 duty cycle patterns. Use the NEXT key to begin programming. Select 12 hour or 24 hour clock format using the +/- key.
Page 9 U.S. LATITUDE CHART World Latitude Chart...
Page 10: 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 combination of days including the 3 holiday schedules (A, B and C).
Page 11: Holiday
Select YES for each day that is to be included in this sensor event. Program the turn on setpoint. 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...
Page 12: Override
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 pro- grammed as a single day holiday by making the ending date the same as the begin- ning date.
Page 13: Accessories
Specifications: Operating temperature: -40 F to 140 F (-40 C to 60 C), Resolution: 1.5F (1C) Light Sensor Model LS-R is a solid-state light sensor designed to interface directly with the EL78. It provides a relative light level to the control (0-100 L).
Page 14 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. PROGRAM Press PROGRAM key to step through headers until EVNT (event header) is reached.
Page 15 NEXT Sensor event # 02 is shown. Repeat the above steps to select sensor 1, channel 1, 12:00 PM, MON thru FRI, an ON setpoint of 077F and an OFF setpoint of 075F. PROGRAM Advance to HOL (holiday) header. NEXT Displays SPEC (special holiday ) header.
Page 16 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. NEXT Sunrise time is displayed with hours flashing. Set to today’s sunrise hour.
Page 17 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. Example No. 5 Operation of OVr (toggle) override input Assume that the channel is currently under control of a duty cycle event.
Page 18: 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/5minute/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 19 Events Event Type Channels 1-8 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 20 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 chan 5 = yes/no chan 6 = yes/no chan 7 = yes/no chan 8 = yes/no ONt =...
Page 21 Input Configuration 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 chan 5 = yes/no chan 6 = yes/no chan 7 = yes/no chan 8 = yes/no ONt =...
Page 22 Input Configuration Input # 5 (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 chan 5 = yes/no chan 6 = yes/no chan 7 = yes/no chan 8 = yes/no ONt =...
Page 23 Input Configuration Input # 7 (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 chan 5 = yes/no chan 6 = yes/no chan 7 = yes/no chan 8 = yes/no ONt =...
Page 24 Sensor Events Channels Setpoints Sens. # 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 SU MO TU WE TH FR SA HA HB HC ___:___ am/pm SU MO TU WE TH FR SA HA HB HC...
Page 25 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 26 NOTES...
Page 27 NOTES...
Page 28 IN NO EVENT SHALL MAPLE CHASE COMPANY BE LIABLE TO PURCHASER OR ANY THIRD PARTY FOR ANY LOSS OF PROFITS OR OTHER INCIDENTAL, CONSEQUENTIAL OR SPECIAL DAMAGES WHATSOEVER. Maple Chase Company Paragon Electric Canada, Ltd. 5785 Kennedy Road 2820 Thatcher Road Mississauga, Ontario L4Z 2G3...

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