Essentials of ARD Elevator Emergency Rescue Device

Use a Phillips screwdriver to remove the fixing screws at the four corners of the front cover.

Carefully remove the front cover to expose the internal terminal block and battery compartment.

Detailed explanation of electrical wiring

The wiring of ARD is divided into two parts: the main circuit and the control circuit, which must be strictly distinguished to avoid equipment damage caused by misconnection.

1. Main circuit terminal (J10)

Terminal identification function description

L1, L2, L3 three-phase mains input connected to elevator machine room three-phase 380V power supply

PE protective grounding wire

R. S, T emergency output connected to the power input terminal of the elevator control cabinet

Key warning: It is strictly prohibited to mistakenly connect the mains input line to the output terminals R, S, T, otherwise the internal inverter circuit of ARD will be directly burned.

2. Control circuit terminals (J6/J3, 10 positions in total)

Terminal signal name and function description

24V external 24V interface can provide 24V power supply for X1 input

Y1 emergency operation start signal output to elevator controller, informing to enter emergency mode

M1 phase sequence signal ARD is disconnected when it exits the emergency state

M2 short-circuit signal is used to short-circuit the elevator door lock circuit (depending on the plan)

CAN/CANL CAN communication reserved communication port (for expansion or monitoring)

X1 emergency communication signal high level valid (10-30V). After receiving the signal, ARD considers the emergency operation completed, stops outputting, and exits the emergency state. If this signal is not received within 3 minutes, ARD will automatically stop outputting.

3. DIP switch (K1/K2)

When leaving the factory, K1 and K2 have been configured according to the three-phase 380V model, and users are not allowed to make changes on their own. If you need to adapt to three-phase or single-phase 220V input, you must contact the manufacturer to change the parameters or model.

Switch function (schematic):

K2 ON, K1 OFF: 380V input

K2 OFF, K1 OFF: 220V input? Please refer to the equipment nameplate for details and do not move it randomly.

4. Suggestions for practical wiring operation

The main circuit cable should use at least 2.5mm ² copper core wire (calculated based on power, around 15kVA).

Control cables use shielded twisted pair cables (such as RVSP 2 × 0.75), with a length generally not exceeding 10 meters.

The grounding terminal PE must be reliably connected to the machine room grounding strip, with a grounding resistance of ≤ 4 Ω.

A 1.5m long control cable is included with the equipment for connecting to the elevator controller, and the remaining cables are provided by the user.

Debugging and functional verification

1. Check before powering on

Confirm that all bolt terminals have been tightened.

Confirm that the polarity of the battery connection wire is correct (red positive, black negative), and the total voltage of the three batteries connected in series should be 30-42V (depending on the charging status).

Disconnect the switches (if any) from the ARD output terminals R, S, T to the elevator control cabinet, or temporarily remove the output lines to avoid damaging the elevator controller during load debugging.

2. Normal state testing

Close the three-phase mains input circuit breaker and observe that the ARD panel power indicator light (usually green) should be constantly on.

The measurement output terminals R, S, and T should have a three-phase voltage of 380V (direct to the mains).

Measure the battery terminal voltage: It should be in float charging state, approximately 40.8V-41.4V (13.6-13.8V per block).

3. Emergency simulation testing

Disconnect the mains power input (pull down the circuit breaker or simulate phase loss).

ARD should detect power loss within 1-2 seconds, activate the internal relay, and start the inverter.

The output terminals R, S, and T should display a single-phase voltage of 380V/50Hz.

Observe that the Y1 terminal should have a 24V (or contact closed) signal output to the elevator controller.

The elevator should be able to run at emergency speed (usually 0.3m/s) to the nearest floor and open the door.

If the elevator controller sends a high-level (24V) signal to the X1 terminal of the ARD after opening the door, the ARD should immediately stop outputting and exit the emergency state.

If X1 signal is not received, ARD will automatically cut off the output after 3 minutes to prevent battery damage caused by excessive discharge.

4. Municipal power restoration test

Reconnect the mains input, the ARD should automatically switch back to mains direct mode, the battery will resume charging, and the Y1 signal will disappear.

The elevator has resumed normal operation.

Maintenance and battery replacement

1. Regular inspection items

Check the battery terminals for corrosion and looseness once every quarter.

Use a multimeter to measure the float voltage of each battery, and the deviation should not exceed 0.3V.

Clean the heat dissipation holes and fans (if any) to ensure good ventilation.

Check if the circuit breaker and contactor are functioning properly.