DIGILINE SYSTEMS USER MANUAL AC Sequence
Contents
1. was off will turn ON for the set value of time When the room temperature is above or equal to High temperature and both the air conditioners will run The sequence will be perform correctly when normal screen is opened that shows room temperature make it sure that no setting screen is opened If no key is pressed for 30 sec then the system will jump to main screen automatically 3 3 Time based on off Sequencing The time based ON OFF sequencing plays very important role to utilize both the Air conditioners efficiently When the room temperature is below the high temperature then both air conditioner will run alternately for the set value of time 3 4 High Low voltage alarm relay When Input voltage is less than low voltage and greater than high voltage then voltage alarm relay will turn On 3 5 High temperature alarm relay When temperature greater than high high temperature setting then temperature alarm relay will turn On And also both ACs will ON 3 6 Example Parameters Setting Consider the follow settings Set Hystresis 3 C Set High Temperature 27 C System behavior on various room temperatures will be as follows Room Temperature 27 C or less Only One Air conditioner will be ON Room Temperature 30 C or greater AC1 ON AC2 ON Room Temperature 30 C or greater High Temp Relay ON 3 7 Connection Details C Oo 0 POWER STATUS oO O VOLT TEMP HIGH LOW HIGH L N NO COM NO COM NO C2. DIGILINE SYSTEMS The Complete Electronic Solution DIGILINE SYSTEMS ar ISO 9001 2008 CERTIFIED MFG OF POWER SUPPLIES SMPS BATTERY CHARGERS AC CONTROLLERS B1 18 DSIDC FLATTED FACTORY COMPLEX A BLOCK JHILMIL INDUSTRIAL AREA DELHI 95 www digilinesystems com Table of Contents 1 Introduction 1 0 Features 1 1 Parameters Setting 1 2 Factory Default Settings 1 3 Parameters Range 2 Specifications Table 3 Work Principle of Sequence Controller 3 0 Power On Switching 3 1 Temperature based ON OFF Sequencing 3 2 Time based ON OFF Sequencing 3 3 High Low Voltage Alarm Relay 3 4 High temperature Relay 3 5 Example Parameters Setting 3 6 Connections Detail AC Sequence Control System Two Four Air conditioners Control 1 Introduction The Sequence Control System has been designed to control the automatic sequencing of two Air conditioners The ON OFF sequencing of the Air conditioners is based on temperature and time dependent The data retention memory has been used to save the user parameters and time passed by each air condition The time based ON OFF sequencing efficiently utilizes life span of both Air conditioners When room temperature is above the Low temperature and below the High temperature then only one air conditioner will remain ON When the set value of time is achieved the running air conditioner will turn OFF and the other air conditioner that was off will turn ON after 1 minut
3. I 2 3 4 On Off Faulty unit Mains Voltage 2 OR4 AC UNITS Window Split or Cassette 220 V Single Phase Time amp Room Temperature sensing based Selectable 3 Degree Centigrade Selectable 15 35 Degree Centigrade 0 1 Degree Centigrade Room tenperature Based on current and grill temperature Cyclic Running or Resting 7 Segment Displays amp Bi color LEDs Under amp over voltage Cut off Under amp over voltage protection for the contactors MCB for each AC unit in addition to the above active in both manual and auto modes Also acts as backup protection in manual mode High room temperature Supply over under voltage DATA LOGGING Daily Usage Logs 60 days for each AC 3 Working Principle of Sequence Controller 3 1 Power On Switching When the power is turned ON the controller will display The 1st message VOLT for 1 Sec and then its value like 215V for 6 Sec Then 2nd message t C for 1 Sec and then its value like 25 5C for 6 Sec Then 3rd message AC1h for 1 Sec and then its value like 00 1H for 6 Sec Then 4th message AC2h for 1 Sec and then its value like 00 1H for 6 Sec After this cycle will keep on repeating Till you press any key 3 2 Temperature based on off Sequencing When room temperature is below the High temperature then only one air conditioner will remain ON When the set value of time is achieved the running air conditioner will turn OFF and the other air conditioner that
4. OM NO COM 220V AC HIGH LOW HIGH AC1 AC1 1Phase VOLTAGE TEMPERATURE OUTPUT OUTPUT MAINS ALARM ALARM RELAY RELAY POWER RELAY RELAY ALL ARE POTENTIAL FREE CONTACTS
5. e for the set value of time When the room temperature is above or equal to High temperature and both the air conditioners will run When the temperature goes normal below high temp and time passed for the both air conditioners is below the set value of time then one of the air conditioner that was turned ON later to decrease the room temperature will go OFF and its running time will be saved in data retention memory of the system The sequence will be perform correctly when normal screen is opened that shows room temperature make it sure that no setting screen is opened If no key is pressed for 30 sec then the system will jump to main screen automatically 1 0 Features Microcontroller based system with Digital Temperature Sensor 4 7 Segment LED Display Data retention Memory for Time and Temperature settings Parameters setting from Sequence controller Module 1 minute Switching delay for each Air conditioner Configurable Set Value for Time Configurable Set value for Temperature Configurable Set value for High Temperature Configurable Set Value for High Low Voltages 10 High Temperature Alarms 11 High Low Voltage Alarms Sea SNS 1 1 Parameters Setting The user settings are very important to operate this module properly There are five parameters for settings 1 High Voltage HVOL 2 Low Voltage LVOL 3 Hysteresis For Temperature HYST 4 Time Delay HOUR 5 Temperature HTMP The following procedure is
6. used to change these settings There are Four Switches provided on the front panel 1 SELECT Used for Setting desired parameter 2 ENTER Used for Saving desired parameter 3 UP Used for increment a value 4 DOWN Used for setting decrement a value Programming this can be done by 1 Press SEL key on pressing SEL the screen will display HVOL if you again press SEL key the screen will display following repeatedly LVOL HYST HOUR HTMP 2 Select desired parameter by SEL key and edit values using UP DOWN Key 3 Now Press ENTER key to save values 1 2 Factory Default Settings When the Sequence Controller is first time turned on the following settings are loaded by default these settings can also be changed 1 High Voltage HVOL 250 Volts 2 Low Voltage LVOL 210 Volts 3 Hysteresis For Temperature HYST 5 Deg C 4 Time Delay HOUR 1 Hour 6 Minutes 5 Temperature HTMP 35 Deg C 1 3 Parameters Range Set value High Voltage 230 250 Volts Set value Low Voltage 180 210 Volts Set value Hysteresis For Temperature 1 10 Deg C Set value Time Delay 00 1 20 0 Hour Set value Temperature 1 99 Deg C aRWN 2 Specification Chart Capacity Types of AC units Power Source Control method Control Hysterisis Control Range Measurement Resolution Control points sensed Bad AC unit isolation Runtime balancing Readouts Modes of operation Room Tenperature High Voltage High AC
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