Protection:- 1] Over Voltage Protection (Settable)
2] Under Voltage Protection (Settable).
3] Over Load Protection (Settable).
4] Under Load Protection (Settable).
5] Unbalance (Settable)
6] Reverse Phasing (Settable)
7] Phase Failure Protection (Settable)
8] High pressure (potential free input) (AC1/AC2)
9] Low pressure (potential free input) (AC1/AC2)
10] AHU Door Open (potential free input) (Blower/Master controller)
Auxiliary Power:- No External power is required (Draws power from the voltage signal Inputs)
Accuracy :- 1] Volt 0.25% rdg ± 1 dgts.
2] Current 0.25% rdg ± 1 dgts.
Communication Output :-1] Serial port : RS 485
2] Baud rate : Default: 9600
3] Start bit : 1
4] Stop bit : 1
5] Protocol : MODBUS - RTU
Environmental:- 1] Working Temp : 0 to 55º C
2] Storage Temp : 10 to 70º C
3] Relative humidity : 0 – 95 % non-condensive
Controls up to 3 Compressors and a Blower .
Protects the compressor with the advanced Proton Motor Protection Unit (MPU) from unhealthy conditions like Under Load, Over Load, Under Voltage, Over Voltage, Single Phasing, Voltage Unbalance, and Current Unbalance.
Main Controller with 16 X 2 LCD Display protects the 3 phase blower from unhealthy voltage and current conditions.
Main controller communicates with MPU via RS 485 Modbus and displays the data sensed by the MPU.
Accurate sensing temperature by precise temperature sensors.
Time sharing for compressors to share load equally.
Continuous display of Room Temperature, Voltage and Current drawn by compressors, and Faults if any.
Data logging of faults occurred in on Main Controller.
Sequencing of comp. for equal run hours, site selectable.
Automatic Timer mode operation if Room sensor fails.