Aircon Controls

1 AC CONTROLLER

SILENT FEATURES

TECHNICAL SPECIFICATIONS:

SYSTEM SUPPLY :

230 VAC +/- 15%

OUTPUT CONTACT RATING :

Output contact rating for AC 25 A at 230 VAC

INDICATIONS:

  1. Healthy: Indicates controller is working healthy.
  2. ALARM: when this LED glows it indicates som e fault is present.
  3. AC1 ON: when this LED glows it shows AC is ON

WORKING:

In normal working conditions when power is tu rned ON, after Power On Delay (10 Sec) AC will be turned O N. Display will show supply voltage, & room temperature. A/C indication will be ON indicating that A/C is running.

In this condition system makes ON/OFF of A/C depending on the set point of temperature during On Time set & remains OFF for the duration of Off Time set. Hyste resis for room temperature is settable. This is normal running c ondition of the system. If fault occurs to one A/C then it is tu rned OFF. To view/change set points of over voltage, u nder voltage, temperature, hysteresis of temperature, press FUN key and put password 15.

NOTE:  To use DEC Key user can hold display.

 

RUNMODE Display:

“t” — Temperature
“v” — Voltage
“OVF” — Over Voltag e fault
“UVF” — Under Volta ge fault
“rHF”— Room High f ault
“rLF” — Room Low fault
“tSF” — Room Temp Sensor fail fault
“tin” — Timer remaining for AC Status change

NOTE:  To use DEC Key user can hold display.

 

PARAMETER SETTINGS: Password is 15.

Parameter Min Max Default
AC on Temperature( “rtn”)
15.0
50.0
21.0 ‘C
AC on Temp. Hyst. ( “hSt”)
00.0
5.0
1.0 ‘C
Over Voltage ( “OVS”)
230
290
270 V
Under Voltage ( “UVS”)
160
230
160 V
Room High Temp( “rhS”)
5.0
50.0
34.0 ‘C
Room Low Temp( “rLS”)
00.0
20.0
15.0 ‘C
ON-OFF Time Bypass( “pas”)
“Yes”
“NO”
“NO”
OFF Time( “OFF”)
5
900
15 M
ON Time( “ON”)
5
900
60 M
AC/Relay On Time
1
100
10 S

NOTE :  User can change the set point u sing arrow keys. Press FUN key to save the settings or leave keys for 10 sec. automatically the set point is saved.

OPTIONAL FEATURES :

  1. With LP/HP Protection for each AC.
  1. With SMS Facility to kno w the status.
  1. PC/ ModBus communicat ions
  1. Fire Protection.
  1. Customized Application

Note :- This unit can be used where supply from AHU in day time. Once AHU OFF Controller give command to standby unit. Logic Temperature based.

 

TERMINAL LAYOUT:

S u p p l y
2 3 0 V A C
AC O/P
L
N
C
NO

INTRODUCTION:

AC CONTROLLER is a Microcontroller based system that controls operation A/C & also protects it from electrical hazards. The compressor cause problems du e to unhealthy conditions such as Over voltage, under voltage etc. & frequent start/stop without prior time delay for pressure eqqualization.

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