2 A/C CONTROLLER is provided with independent power supply for each AC. Controller can work with any one or both power supplies.Under normal working condition at Power, depending on the Room Temperature & Set points IDFAN1 & ODFAN1 will be started after Fan Startup Delays. Compressor will be On after Cp1 Startup Delay & after Startup Delays of IDFAN2 , ODFAN2 .Cp2 will be started if required ( depending on room temperature ).

If a fault occurs then ALARM indication on the front panel will be ON & the fault is displayed in the fault status also fault is stored in the Fault log history.

Prompt detection and rectification of any system failure or mal-operation is of vital importance for any power or process plant. PROTON Alarm Annunciators continuously monitor the various process parameters and equipment status in power-stations, process plants and these parameter are displayed at centralized control room or on control panel. PROTON Annunciators stand for instant alarming of any abnormal condition occurs during process and protect the valuable equipments. PROTON Annunciators ensure the higher order of reliability and thus provide a comprehensive service to the industry for monitoring, alarm and control of process plant parameters. These highly advanced and compact systems use the latest single chip micro-computer technology for it’s design and offer multipoint annunciation with operating sequences as per prevailing standards and with many optional features as indicated aside.

VAF meter displays the Phase-Neutral Voltages in the first row, Second row displays frequency & Third row Displays the Ampere Values of the line, In the scrolling pattern. According to the display corresponding phase Led will be ON.

Protection of 3 Phase devices against Over voltage, Under voltage, Single Phasing, Over Frequency, Under Frequency, Reverse Phasing & unbalance supply are one of the major issue in electrical systems. For safe running of 3-phase devices, special protections that keep a continuous watch on supply conditions are very essential. The major cause of maximum load burn-out is overloading which occurs due to unbalance supply, Single Phasing & Reverse phasing conditions. VFR3P detects such Conditions & protect the load from burn out. 'PROTON's VFR 3P' offer above protections along with 3 digit display showing R-Y,Y-B,BR voltages in scanning mode with precise accuracy.

LOW/HIGH voltage tripping to ensure trouble free running of 3-phase Loads, And also protection is provided against Over /Under Frequency