VKL-3R User manual

Load Limiter

VKL-3R

User Manual

VKL-3R

Index

1.- Installation and conections 3

2.- Description of the connections 3

3.- Output of luminous indicators 3

4.- Keys of access to the parameters of menus 3

5.- Modification of a parameter 4

6.- Programming Structure (Menu’s) 4

7.- Calibration of the Unit 5

I.- Normal Calibration (valid for all types of load cells)

1.- Setting of the Zero

2.- Adjust of the weight (PESO)

II.- Calibration for direct Transmission Cell

1.- Setting of the Zero

2.- Adjust of the Weight

8.- Alarms 6

9.- Auxiliary functions 6

10.- Electrical Characteristics 6

11.- Change of the fuse 7

12.- Presentation of Errors 7

13.- Quick Programming Guide 8

VKL-3R

1. Installation and connections

2. Description of the connections.

AL-C (Cable relay)

It will deactivate if the load programmed in the parameter is overcome. You can configure it to deactivate when the load is below the programmed value.

AL-S (Relay of the Overload) It will deactivate if the load programmed in the parameter is overcome. AL-A (Auxiliary Relay)

It will deactivate if the load programmed in the parameter is overcome. HOLD (It activate with a tension between 24 & 220 V alternating or continuous). Activating the entrance of HOLD .The weight measured is blocked,then the display presenting in intermittent, & the relay together with the cabin display conserves its state until this entrance is disabled.

3. Output of luminous indicators

Output that is connected when the relay AL-S is disabled . The output has polarity and it can be valid to activate a led and a buzzer (continuous current 7,5V.. máx. 75mA).

4. Keys of access to the parameters of menus

The unit has a menu to accede to the adjustment of the parameters. Pressing this key successively, will go going to all programmable parameters of the menu in a cycle way.

To return to the visual presentation of weight, press the key several time until arrive at the end of the menu, or just press it during 2 seconds.

Note: If when entering in the menu appears in intermittent, the unit has set a key and it is necessary to introduce your keycode in this moment in order to modify the parameters.

Pressing this key enters in the selected option and once inside we will be able to select the digit to modify. Note: In the event of not being able to enter, it means that the key is protected. And it is necessary to introduce your keycode.

See section No.8 (Auxiliary functions ).

VKL-3R

Pressing this key will modify the selected digit. *Pressing this key when you are located on the parameter, the display presents its content..

Note: 1)The only content that you’ll not see is the parameter 2) If you try to view the contents of parameter , the display shows the version of the internal program.

5. Modification of a parameter

1. Go pressing the key successively until arrived on the desired parameter.

2. Press the key to enter in modification of the parameter, being the left digit in intermittent.

3. Put in the display the wanted value, using this keys & .

4. Press to introduce the selected value. Then the display will become intermittent during 10 seconds.

5. Press the key again while it is intermittent, to confirm the operation. And the display will present the next parameter.

Notes: a) If you haven’t press the for the 2nd time, the operation will not stored, and the display presents again the parameters that you was modifying b) To modify the parameters & , please consult section No.7 (Calibration of the unit).

6. Programming Structure (Menu’s)

Visual Weight Presentation.

Clave=0 Keycode petition to modify parameters ( Only ppears if the key is different from zero).

Alarm of cable (ON/0FF).

Alarm of overload.

Auxiliary Alarm.

Adjust of setting to zero.

Adjust with a well-known weight

Adjust of direct load cells

Retard for the deactivation of the relays

Configuration of the relay AL-C and way of connection

Access Key for the programming process

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7. Calibration of the Unit

This section is necessary for the team to know the relationship between the signal of the cell and the weight being lifted by crane.

There are two ways to calibrate the unit: I. Normal Calibration (valid for all types of load cells).

1) Setting of the Zero: a) Situate in the option of menu

b) Check that the crane has no charge and press the key , The press while the display flashes to confirm the reset. The transaction will be confirmed by a countdown. Upon completion the

display will show the parameter

Note: If not pressed before finishing intermittent (lasting 10 seconds), the operation is not stored and the display shows the parameter again. 2) Adjust of the weight (PESO):

a) Situate in the option of menu .

b) Load a known weight (It is recommended that at least 50% of the rated load) and press .

c) Put the value of the weight placed by using these keys & .

d) To save the value press the key 2 times (The team begins a countdown and the value is stored). Then the display will show the next parameter .

Note: If you haven't press the for the 2nd time, the operation will not stored, and the display

presents again the parameter . II. Calibration for direct Transmission Cell

To fulfill this operation it is not necessary to introduce a well-known weight, but it is necessary that the load cell is calibrated. 1) Setting of the Zero (same as the operation of the normal calibration).

2) Adjust of the Weight: a) Situate in the option of menu

b) To enter and be able to asigned a value press .

c) Put the value of the load of the cell by using this keys .

d) To enter the value press the key 2 times. The display will flash for 10 seconds

e) Then the value will stored in the memory and the display will present the parameter .

Note: If you haven't press the for the 2nd time, the operation will not stored, and the display presents again the parameter

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8. Alarms

The alarms are the load levels in which that change the state of the relay.

When the valueof the load programmed was reach the relay AL-C is disabled (ConF is 0).

If ConF is 1, the relay turns disabled when the load is lower than the value programmed in AL-C.(slack rope).

Value of the load starting from which the relay AL-S is disabled (Overload).

Value of the load starting from which is disabled AL-A.

Note: 1) The disconnection of the relays is temporized in . 2) For the adjustment of the alarms go to the No 4 (Modification of a parameter).

9. Auxiliary functions

Time of retard for the deactivation of alarms. It is measured in fortieth of second. To program 1 second tie = 0040

Config. Function ConF = 0 AL-C it is disabled when the load overcomes the programmed value.

ConF = 1 AL-C it is disabled when the load is under the programmed value (slack rope)

Key to protect the parameters for a possible modifications. Normally the unit comes out from the factory with the key of 0000, that allows a free access to modify the parameters.

- In the case of putting another key different from 0000, the access to modify the parameters is protected.(its highly recommended to remember your key).

- If the unit is protected with a key. And once entered in the menu the display presents intermittent to request us the keycode. It is necessary to introduce the key at this time, if we wants to modify some parameter.

-To introduce the key, while is in intermittent, press the key and a number will appear that it is necessary to substitute for the correct key number.

Note: If you don't remind the key that you put on, write down the number that appears and call the supplier, it will indicate you the right key

10. Electrical Characteristics

Model: VKL-3R Nominal Tensión: 230V. Nominal Current: 60mA. Nominal Frequency: 50-60 Hz. Fuse: 100mA.

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11. Change of the fuse The fuse is in the free mounting fuse holder located in the cable.

ATTENTION

For security, it is indispensable to turn off the current of the unit, before acceding to change the fuse

12. Presentation of Errors

Descripión Acción

Load cell not well connected, damaged or cut Check cables of the cell and / or computer cable. connection.

The load cell is giving too high a negative signal. Check the connection to the computer because the cell should have a reverse charge.

Overflow, the cell is carrying a much higher than It is necessary to use a wider range of cell its rated load capacity. capacity.

Polarity error. (This error is detected when the Check the connection of the cell and perform computer adjusts the weight of the cell polarity again the zero setting brand. changed).

Loss of memory data. Reprogram the computer.

Lack of cell signal. Check connection.

Note: 1) When an error takes place all the relays are disabled.

2) When an error , takes place, the unit is blocked and it doesn't transmit for the port of communications until eliminating the short circuit..

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13. Quick Programming Guide

1. Install the sensor and connect the device:

In order to connect the sensor correctly, please consult section No.1 (Installation)

This section shows in a quick manner the keys of the device.

a) To find the desired parameter, press successively , choose it and press .

b) Modify the value using these keys .

c) To save the data press twice .

2. Steps to calíbrate most important parameters:

1. Set the Zero of the unit with empty elevator:

- Choose the parameter .

- Press , and it will start to count-down.

2. Adjust the Weight (PESO):

- Put a known weight inside the cabin (at least 50% of the full total).

- Introduce in the value of the load that has been placed in the cabin using these keys

. To save the data press 2 times and the unit will start to count-down.

Note: It is important to calíbrate the ZERO before adjusting the PESO.

3. Adjust alarms with the load levels that change the state of the relay.

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