2 Phase ARD 5HP to 10HP
2 Phase ARD 5HP to 10HP

Commercial UPS

2 Phase ARD 5HP to 10HP

The Automatic Rescue Device (ARD) works on the principle of powering and operating the Elevator Controller at rated Voltage to perform the Rescue operation. The Rescue device interfaces with the VFD which has a unique feature of "Low voltage DC operation" to operate the Elevator Motor with Low voltage Battery.
 The ARD comprises of Two-phase processor based inverter. During Mains power ON, it monitors the power and continuously charges the Batteries. In the event of a power failure, the Rescue device will activate within the selectable "response time". The Powerful Inverter will produce and supply 2-Phase,440V, sinusoidal power to the Controller. The Controller is now energized with 2-Phase power and will run the Motor in the nearest direction at low speed and bring the Elevator to the immediate next floor and opens the door automatically. Upon opening the doors, the trapped passengers shall exit and the Inverter will be off to prevent any further battery drain. When normal power resumes, the Automatic Rescue will automatically switch over the Controller to Normal Operation i.e 3Phase Input.
 This device is suitable for those buildings which doesn’t have an emergency power source allocated for the elevator.

 To fulfill the needs of customers and to make it fit for many applications, we offer various models of  Lift inverter:
ARD 5HP, ARD 7.5HP, ARD 10HP in Double Phase

Troubleshooting of Lift Inverter
Sr.No. Faults Solution
System ON Problem
Check On/Off Switch.
Check SMPS supply voltage.
Check the reference 1.65V at O/P-R, O/P-Y, O/P-B,I/P-R, I/P-Y, I/P-B, R-Load, Y-Load, B-Load.
System ON problem, O/p not controlled
Feedback 0-10 Transformer may be faulty.
Preset O/R-H/L, O/Y-H/L, O/B-H/L may be faulty.
Output feedback connector may be loose, Check AC voltage at the connector.
3 Load is Resetting (Turning On/Off automatically) Check the Switch weather it is ok or not.
4 System ON But No Output Check the Position of Bypass Switch. For Inverter its Direction sholud be 1 for Inverter Output & 2 for BYPASS.
Less Backup Time
Check the Charger Voltage. It should be 14V/Per Battery.
Check Battery Cut off Voltage. It should be 10/per Battery.
6 Overload in less load Check overload preset O/L-R, O/L-Y, O/L-B.
System is not sensing Mains
Check AC MCB whether it is loose or in open condition.
Check input connector at PCB, it may be loose.
Check input volage in each phase should be in range.
Input Sensing Transformer may be faulty.
System sensing Mains but No output
Check the Rotary position it sholud not be at 0.
Check the Drive of SCR at Pin no. 2 of CN8,CN9,CN10.
Humming Noise in UPS ON time
AC capacitor in transformer o/p may be faulty.
AC Fan may be Faulty.
Upper or lower drive of any phase is improper.
1. Connection with a battery 
• Check the battery’s polarity.
• Connect the red wire to the positive terminal and the black wire with the negative terminal of the      battery.

2. Mains not being detected 
• Check the mains led located on the front panel of the UPS.
• If the LED is not glowing then 
• Check the (input) mains MCB.
• If in off condition, flip the MCB to turn it back on

3. By passing the supply 
• If the system ceases to operate properly, then it is advised to put the system in bypass                 condition.
• For by-passing the system turn the by-pass knob (red and yellow in colour) located at the back   panel of the UPS.
• Turning the knob makes the system enter in to by-pass condition.
Note **
when in by-pass condition, the appliances connected to the system would run directly on mains. 

4. Reset the system when under overload
• When in overload condition the overload LED starts to glow.
• The system to prevent damage undergoes shutdown when excess load is applied to it over a long   duration. 
• To turn the system back ON, remove the excess load that is applied to it. 
• Press the power button in order to reset it.