RCU-205 User manual

Control unit

RCU 205

Instructions manual

RCU-205

Index

1.- Introduction 3

2.- Installation and connections 3

3.- Control, inputs and outputs 3

4.- Access to menu parameters 4

5.- Parameters modification 4

6.- Menu structure 5

7.- Unit control adjustment 5

7.1.- Adjustment of zero 5

7.2.- Adjustment of sensitivity 6

7.2.1.- Adjustment of known weight 6

7-2-2.- Adjustment with known nominal load,(CELL). 6 8.- Compensation chain 6

9.- Specifications 7

10.- Error codes and troubleshooting 7

11.- Quick programming guide 8

RCU-205

1. Introduction 2. Installation and connections

RCU-205 device main field application is the load limitation in elevators. The

measurement accuracy is higher than the usually required.

This device measures the weight supported by the load cell and activates the

relays when the programmed levels are

overflowed .The relay contacts may inform to the elevator control board about the

programmed levels status.

24..230 V (DC or AC)

3. Control, inputs and outputs.

 HOLD: Hold is a universal input with a voltage range from 24 to 230V AC or DC. This input is used to communicate the RCU that the elevator is in motion state and it works as follows:

o Hold function activates when the doors are closed, and blocks the weighing process to avoid the relays change the status while the elevator is moving.

o When it is activated it retains the real value inside the cabin and for any weight variation when the elevator moves from one floor to another will be considered as added weight to make chain compensations.

The use of this input is optional, but necessary if chain compensation is required.

Remarks: When the hold signal is activated the device shows “HOLD” blinking in the display.

 RELAYS: Two relays with an opened free voltage contact which status change when the load level is higher than the programmed level.

 BZ: External buzzer. The device allows to connect a 5V buzzer between the negative pole power supply and the 9th pin.

 SENSORS: USB Connection for the load cell.

RCU-205

4. Access to menu parameters.

Menu key. Pressing this key, the device will enter into the parameters program mode, and show the first parameter AL1. Afterwards pressing this key successively all the programmable parameters are shown in cycle way. To go back to the weight presentation, press the key several times until the end of the menus.

Press this key to enter on the chosen parameter to modify the value.

This key is to change the digit value when we are setting the parameters.

5. Parameters modification.

Alarms modification.

1. Press successively the key until select the desired alarm.

2. Press the key to enter in parameter modification. The left digit will blink.

3. Select the wished value in the display using the keys and .

4. Press twice to set the chosen load level value. If it is pressed only once, after 10 seconds the process finishes without saving the change.

5. Change the idle status of the relay with the key .(On = Close, OFF = Open).

6. Press twice to save the changes. If it is pressed once, after 10 seconds the process finishes without saving the change.

Remarks: When the device has no power supply, the relay status is OFF = Open.

The overload has to be connected in the alarm/relay 2 .

Parameters Modification (no alarm).

7. Press successively the key until select the desired parameter.

8. Press the key to enter in parameter modification. The left digit will blink.

9. Select the wished value in the display using the keys and .

10. Press twice to save the change. If it is pressed once, after 10 seconds the process finishes without saving the changes, and the display shows again the parameter.

RCU-205

6. Menu structure

Pressing successively the key the menu parameters are shown in the following order:

Device in weighing mode.

Alarm level 1 and relay rest status 1(On/OFF).

Alarm level 2 and relay rest status 2(On/OFF).

Zero Setting.

Adjustment of sensibility with a well known weight.

Adjustment of sensibility with the nominal load of the cell.

Maximum value of chain compensation weight.

Alarm Sound (On/OFF; Intermittent sound with the alarm 2).

7. Unit control adjustment.

This section is required for the unit to know the relation between the signal from the cell and the known- weight set in the cabin. It is recommended to make the adjustments at the lowest floor.

Please follow the steps:

7.1.- Adjustment of Zero:

1. Select the parameter .

2. Make sure that the cabin is empty and press , the display will blink.

3. To confirm the operation, press while the display is blinking. The operation will start after a

10-second countdown. When the countdown finishes, the parameter will be shown again on the display.

Remark: If is not pressed before the blinking stops, the adjustment will not be saved.

RCU-205

7.2.- Adjustment of sensitivity (This could be done in two ways).

7.2.1.- Adjustment of known weight (PESO) (valid for all types of load cell).

1. Introduce a known weight inside the cabin. It is recommended to be at least 50% of the elevator’s capacity.

2. Select the parameter , and press to enter.

3. Introduce the value of the known weight using the keys .

4. Press twice (The display will start a 10-second countdown and the introduced

value will be saved). When the countdown finishes, the parameter will be shown again on the display.

Remark: If is not pressed before the blinking stops, the adjustment will not be saved.

7.2.2.-Adjustment with known nominal load, direct transmission cell (CELL).

1. By this way the adjustment is not as precise as using a known weight.

2. Select the parameter and press to enter.

3. Introduce the nominal load of the cell (CELL), which is presented in a label attached to

the cell, using the keys . In case of using more than one load cell, add up the value of each one and introduce the result in the parameter CELL.

4. Press twice to save the change.

Remark: If is not pressed before the blinking stops, the adjustment will not be saved.

8. Compensation chain

The chain compensation is a software algorithm that verifies the weight difference between flats and compensates it.

The HOLD signal must be activated when the doors are closed, to compensate the weight during the elevator movement.

should have the estimated weight of the chain.

Chain compensation is not applied if value is set to zero .The default value of is zero. The maximum CAdE compensation value of the unit is “0050” (this is the maximum weight value to compensate the chain weight).

RCU-205

9. Specifications

Nominal voltage: 24 Vdc Maximum current: 80mA

Short circuitable power supply, internal fuse is not needed. Relay contact current: 3A/250Vac.

Box: VO fireproof plastic IP-60

10. Error codes and Troubleshooting

Error description Action

Load cell wrong connected, broken down or Check the load cell connection. cable is cut.

Negative overflow of the converter, so the Check the load cell connection load cell is giving a negative signal too high. because it should be no negative charge. Positive overflow. Load cell is supporting a It is necessary to use a load cell higher weight than the nominal load. with higher nominal load. Polarity error. It is detected when the control Check the load cell connection. unit is adjusted with a well known weight and Adjust again on zero and weight. the polarity is changed, or the weight is not in the cabin during the adjustment.

Data loss in memory. Reprogram the unit.

Load cell with very low sensibility. Usually the Adjust again on zero and weight. unit is wrong adjusted.

Remark: When an error is produced all the alarms are activated and the elevator remains blocked. If

is produced the relay contacts will open (RELE = OFF).

RCU-205

11. Quick programming guide.

1. Install the sensor and connect it to the unit control. To connect properly the sensor to the unit control, please see section No.1 (Installation).

2. Before to start to calibrate the unit control, please be advise to do the following:

a). Down the cabin to the lowest floor of the building. (or in the half way of the itinerary). b) Bounce inside the cabin to avoid possible hooks on the guide rail. 3. Most important parameters to calibrate step by step:

1. Adjust the with the cabin empty.

2. Place a well known weight in the cabin (minimum 50%).

3. Adjust the . Input the value of the well known weight.

4. Adjust alarm with the load value that activates the relay 1, and the relay state.

(Remarks: On this parameter you could assign the full load alarm)

5. Adjust alarm with the load value that activates the relay 2, and the relay state.

(Remarks: On this parameter you could assign the over load alarm).

6. Input in the estimated weight of the chain.

7. Choose the status (On = Overflow sound activated).

Remark: It is important to adjust zero before the weight adjustment.

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Pol. Ind. Santa Ana C / Torno No 8 - 28522 ‐ Rivas Vaciamadrid ‐ Madrid D1328-00 Tel.: +34 91 300 14 35 ‐ Fax.: +34 91 300 1645 ‐ www.dinacell.com 04/06/18