Sick cds инструкция на русском

Update

Update

Please take note of the following updates to this document!

Based on Machinery Directive 2006/42/EC, we have added the following supplementary data or change notices on our product to the following document.

Scope

This document is an original document.

Cited standards and directives

The standards and directives cited in these operating instructions might have changed. The following list indicates the standards and directives that might have been cited and their successive versions.

Kindly replace the standards and directives cited in these operating instructions with the successive versions listed in the table.

V4000 PB

Electrical installation

aPrevent the formation of a potential difference between the load and the protective device!

Technical specifications

Safety-related parameters according to EN ISO 13 849, EN 62 061, IEC 61 508:

EC declaration of conformity

Note You can obtain the EC declaration of conformity with the standards used at: www.sick.com

2)For detailed information on the exact design of your machine/system, please contact your local SICK representative.

3)Only valid for the assumption of conformity until 28.12.2009. From then on it will only be permissible to use the successor EN ISO 13 849.

Checklist for the manufacturer

L

Checklist for the manufacturer/installer for the installation of electrosensitive protective equipment (ESPE)

Details about the points listed below must be present at least during initial commissioning — they are, however, dependent on the respective application, the specifications of which are to be controlled by the manufacturer/installer.

This checklist should be retained and kept with the machine documentation to serve as reference during recurring tests.

This checklist does not replace the initial commissioning, nor the regular inspection by qualified safety personnel.

3.5.13Monitoring of the slow closing speed vcrawl from the pinch

3.5.14Maximum closing speed and maximum overall machine

Contents

Operating instructions

7.5Daily checks of the protective device by authorised commissioned

Operating instructions

V4000 PB

1 About this document

Read this chapter carefully before working with the operating instructions and the

V4000 Press Brake system.

For «V4000 Press Brake system» we shall use the abbreviation «V4000 PB» from now on.

1.1Function of this document

These operating instructions are intended for the technical personnel of the machine manufacturer or the machine operator in regards to safe mounting, electrical installation, configuration, commissioning, operation and diagnostics of the V4000 PB sensor.

These operating instructions do not provide instructions for operating machines on which the V4000 PB is, or will be, integrated. Information of this kind will be found in the operating instructions for the machine.

1.2Target groups

These operating instructions are intended for manufacturers, operators and the users of press brakes which are to be protected by a V4000 PB. It also addresses people who integrate the V4000 PB into a machine, initialise its use, or who check the unit.

1.3Scope

Note These operating instructions apply for the V4000 PB with the following type label entry in the Operating Instructions field: 8 010 501. This document is part of SICK part number 8 010 501 (V4000 Press Brake sensor system in all available languages).

You will require a CDS (Configuration & Diagnostic Software) version 3.0 or greater for the configuration and diagnostics of this system. To determine the software version, select the Module info item from the ? menu in the menu bar.

1.4Depth of information

These operating instructions contain information on the V4000 PB regarding the following subjects:

Planning and using protective devices such as the V4000 PB sensor also require specific technical skills which are not detailed in these operating instructions.

When operating the V4000 PB sensor, the national, local and statutory rules and regulations must be observed.

General information on health and safety using opto-electronic protective devices is contained in the brochure «Safe Machines with Opto-Electronic Protective Devices».

We also refer you to the SICK homepage on the Internet at http://www.sick.com

Here you will find:

These operating instructions in different languages for viewing and printing

The EC Declaration of Conformity

1.5Abbreviations

ANSI American National Standards Institute

BWS Electro-sensitive protective equipment (ESPE) (e. g. V4000 PB)

CDS SICK Configuration & Diagnostic Software = software for configuring and diagnosing the V4000 PB system

EDM External device monitoring

ESPE Electro-sensitive protective equipment HMI Human machine interface

LD Laser diode

LELD Light-emitting diode MP Mute point

NC Numerical control

OMO Overall machine overrun ORT Overall response time

OSSD Output signal switching device = signal output of the protective device to the controller used for switching off the movement which is the source of danger

PBDC Programmed bottom dead centre PBI Press brake interface

PTDC Programmed top dead centre PP Pinch point

SP Switch-over point (from vp to vslow) SPLC Safety programmable logic control

V4000 PB V4000 Press Brake (sensor system)

Operating instructions

aWarning!A warning indicates concrete or potential dangers. They save you from harm.

nSoftware notes show the location in the CDS (Configuration & Diagnostic Software) where you can make the appropriate settings and adjustments. Go to the View menu, Dialogue windows of the CDS and activate the item tabs to view the named dialogue boxes as required. Otherwise use the software wizard to make the desired settings.

Representation of the signals for teach-in, alignment mode and selection of protective volume mode

These operating instructions also describe the V4000 PB input and output signals. As a way of uniquely representing the signals for teach-in, alignment mode and selection of protective volume mode (input signals), tactile switching amplifiers (buttons, switches) are used. The signals can be generated at the inputs of the V4000 PB by, for example, foot switches, alignment buttons, teach-in buttons, selector switches and key-operated switches or by the corresponding switching elements on the HMI of the press controller.

2 On safety

This chapter deals with your own safety and the safety of the operators.

>Read this chapter carefully before working with the V4000 PB or with the machine protected by the V4000 PB.

2.1Specialist personnel

The V4000 PB must be mounted, connected, commissioned and serviced only by specialist personnel. Specialist personnel are defined as persons who

due to their technical training and experience possess sufficient knowledge in the field of safety equipment for making press brakes safe

and

who have been instructed by the responsible machine operator in the operation of the machine and the current valid safety guidelines

and

have sufficient familiarity with the relevant national industrial safety regulations, work safety regulations, directives and the generally recognised code of practice of the industry (for example, DIN standards, VDE specifications, technical codes of other EC member states) that they can judge whether the press brake is safe from the occupational safety point of view

and

have access to and have read these operating instructions.

As a rule these will be specialist personnel, the manufacturer of the ESPE or even such persons who have been given the corresponding training by the ESPE manufacturer, who are mainly concerned with inspecting and testing ESPEs and have been commissioned by the ESPE operator in this regard.

2.2Applications of the system

The V4000 PB is an ESPE (electro-sensitive protective equipment) device designed to protect the area beneath the die of press brakes at high closing speeds. As soon as an object enters the protective volume beneath the die, the ESPE issues the signal to the press controller to stop the fast closing movement and this system must then stop the closing movement.

The V4000 PB system consists of a sender and a receiver which are mounted on the press crosshead. The protective volume between the sender and the receiver moves with the press crosshead and thus ensures that the safeguarded area stays beneath the die.

The system is a Type 4 ESPE as defined by to IEC 61 496-1 and 2 and is therefore allowed for use with controls of safety category 4 in compliance with EN 954-1. It may be used in safety applications up to SIL 3 in accordance with IEC 61 508.

The national/international rules and regulations apply to the installation, commissioning and periodic technical inspections of the V4000 PB, in particular:

–Machinery Directive 98/37/EC

–Provision and use of Work Equipment Directive 89/655/EEC

–The work safety regulations/safety rules

–Relevant national health and safety regulations

Manufacturers and operators of the machine on which the V4000 PB is used are responsible for obtaining and observing all applicable safety regulations and rules.

The notices, in particular the test regulations (see Chapter 7 «Commissioning») of these operating instructions (e.g. on use, mounting, installation or integration into the existing machine controller) must be observed.

The tests must be carried out by specialist personnel or specially qualified and authorised personnel and must be recorded and documented to ensure that the tests can be reconstructed and retraced at any time.

The operating instructions must be made available to the operator of the machine where the V4000 PB is fitted. The machine operator is to be instructed in the use of the device by specialist personnel and must be instructed to read the operating instructions of the V4000 PB and of the machine.

2.5Safety in operation

Dangers which the V4000 PB does not protect against!

The different ways in which the press brake can be used in manufacturing means that indirect dangers may arise.

Please observe and comply with the following points in order to protect yourself against dangers during machine operation.

The V4000 PB safeguards the hazardous point beneath the die at high closing speeds (over 10 mm/s) or irrespective of the speed up to a gap of 6 mm. The maximum height of the protective volume up to the lower edge of the die is 26 mm.

Maximum protection is provided in standard protective volume mode.

In the case of box-bending or back-stop operation, use of a restricted protective volume is possible. With this kind of work, the reduced dimensions of the protective volume means that only limited protection against getting caught or crushed is possible.

If parts of the body are brought into the hazardous point within a box, they will only be detected behind the tolerance zone around the pressure axis. There is a danger of injury by being caught or crushed.

For a time interval of 100–150 ms (just before the gap height of 6 mm is reached) there is the possibility of an object which is moving into the space between the die and the workpiece being crushed.

Correct handling of the workpiece

By handling the sheet properly you can avoid your hands or fingers being caught or crushed.

V4000 PB

>Use gloves to prevent:

–Injuries caused by edges, corners and burr

–Residues and rust caused by sweat from the hands getting on dies and workpieces

–Deposits on the hands

–Slipping of smooth workpieces

Fig. 2: Handling of the workpiece 1

>Hold the sheet by the left and right corners of the end facing you.

>Use both hands to hold the sheet firmly from below (thumb on top of the sheet, rest of hand underneath)

Fig. 3: Handling of the workpiece 2

>When holding the sheet, be sure not to spread your fingers.

Note Spread fingers will interrupt the protective volume of the V4000 PB. The protective function of the V4000 PB will be triggered and the V4000 PB initiates a stop.

If the protective volume is limited (box-bending and back-stop operation) there will be an additional risk of getting your hand caught.

Note If pre-flanged sheets are not handled correctly, your hands could get caught between the sheet and the die or press crosshead.

>Hold the pre-flanged sheet by the left and right edges between the thumbs and index fingers.

>Use both hands to hold the sheet firmly.

V4000 PB

Correct handling with box-bending

Fig. 5: Handling of box-shaped workpieces

Note In box-bending and back-stop modes the protective volume is limited and a tolerance zone around the pressure axis is hidden. If box-like workpieces are not handled correctly, your hands could get caught between the workpiece and the die or press crosshead.

>Do not hold the upper box walls by the edges or corners on the pressure axis.

>Hold box-shaped workpieces by their back part (closest to you) outside the hazardous point.

The V4000 PB cannot protect you against these dangers:

Crushing your hands or fingers between the workpiece and the press crosshead as a result of handling the workpiece incorrectly during bending

Crushing your fingers between the die and the workpiece as a result of handling the workpiece incorrectly

The risk of injury from workpieces falling when the press brake is opened

The risk of injury from large workpieces swinging upwards during bending

When bending aids are used:

Risk of injury due to the workpiece swinging up or down, or to the movement of the bending aids

When automatically traversing rear stops are used:

–Crushing your hands or fingers between the rear stops and the female die during traversing movements towards the operator

–The operator being crushed by large workpieces being pushed at him by the rear stops

Risk of injury in the rear space arising from automatically traversing stops, moving tools, workpieces or bending aids.

Access to the rear space or standing in the rear space must be prevented by means of the appropriate safety devices, such as a light grid.

Dangers arising from mounting of the V4000 PB

>When mounting the V4000 PB make sure that there will be no crushing or shearing points between the moving sender and receiver and other stationary machine parts or devices in the vicinity of the machine.

>If hazardous points cannot be avoided, they must be made safe by other protective measures or remedied by design changes.

3 Product description

This chapter provides information on the special features and properties of the V4000 PB.

It describes the safety concept, the range of use, the structure and operating principle of the device, configuration options and the various operating modes.

>Read this chapter before you mount, install and commission the V4000 PB.

3.1Special features

Sender/receiver system

Response time 10 ms

Unambiguous status information via LED and 7-segment display shown directly on the V4000 PB receiver

All inputs and outputs of the system integrated in the receiver

Simple combination of the V4000 PB system with alternative protective measures by means of bypass inputs and outputs

No additional evaluation unit required in the control cabinet

V4000 PB system uses the existing measurement guides of the press brake for determining speed, position and direction

Optional operation via hardware input devices or via the outputs of the press brake controller (e.g. NC).

The SICK CDS user interface provides ease of configuration and comprehensive expanded diagnostics of the V4000 PB system

Reliable pinch-point monitoring even when workpiece surface has irregularities or unevenness

Automatic functions

Determination and monitoring of the pinch point

Monitoring of the relevant overall machine overrun of the press brake as a function of speed

Monitoring of the slow closing speed (≤ 10 mm/s) from pinch point V4000 PB (can be configured)

Dynamic adaptation of the switch-over point

Position-dependent muting (6 mm above the pinch point)

Speed-dependent muting (configurable)

Checking of the die position to detect coarse maladjustment

Detection of box wall in front and rear spaces

Protective operation

3 protective volume modes with adapted protective volume shape corresponding to bending task

Loading of press hydraulics minimised by box and back-stop modes without emergency stop at box wall

Operating instructions

Fig. 6: Press brake with V4000 PB

The V4000 PB safeguards the hazardous point beneath the die at high closing speeds

(> 10 mm/s) and a pass-through gap height of more than 6 mm. If the gap height between the top of the workpiece and the die tip is 6 mm or less, the ESPE switches automatically into muting mode.

If the muting option is activated at a low closing speed (≤ 10 mm/s), the system will automatically go into muting mode even when the slow closing speed is reached. The speed is monitored continuously.

In the muting state, the protective volume is inactive and the OSSDs stay in the ON state.

Whether muting is permitted at the slow closing speed varies from country to country. This option is by default disabled in the configuration.

In the event of system errors (such as an error being detected when the hardware is tested) the V4000 PB switches into lock-out state.

Fig. 7: Definitions

Die

Illumination field

Protective volume

Pressure axis

Workpiece

Female die

Operating instructions

V4000 PB

3.2.2Protective volume during the operating cycle

This sequence shows the protective volume during one operating cycle.

Protective volume

3.2.3Intrusion of the protective volume during the operating cycle

This sequence shows how the V4000 PB responds when there is an interruption to the

Protective volume

Protective volume

Operating instructions

V4000 PB

3.3Range of use

The V4000 PB is an ESPE (electro-sensitive protective equipment) device designed to protect the area beneath the die of press brakes at high closing speeds, it provides hand and fingers protection.

The V4000 PB is suitable for stationary use in press brakes with a maximum distance of 7.5 m between the sender and the receiver.

The press brake must be designed to comply with the maximum stopping distance of 11 m.

This corresponds, for example, to a maximum overall machine overrun of 8.5 mm at a maximum closing speed of 300 mm/s (see also Section 3.5.13 «Monitoring of the slow closing speed vcrawl from the pinch point»).

Requirements for use of the V4000 PB

Before the V4000 PB can carry out its protective functions the following conditions must be met:

It must be possible to influence the control of the press brake by electrical means.

The OSSDs of the V4000 PB must be incorporated into the press controller in such a way that when the OSSDs give the switch-off signal:

–the dangerous state (high closing speed of > 10 mm/s) is stopped.

or

–the press, should the lock-out state occur, does not start up again.

The V4000 PB must be mounted and configured in such a way that it can detect objects when they penetrate into the hazardous point.

Operating instructions

V4000 PB

The laser diode in the sender emits light which is collected at the transmitting lens and given parallel alignment. The beam of light, which has a constant diameter of 58 mm (illumination field), travels along the lower side of the die to the receiver. In the receiver the light beam is mapped at the image detector.

The evaluation electronics with all relevant inputs and outputs is built into the receiver. Two output switching elements (OSSDs), which go into the OFF state when the sensor function is triggered, pass on the signal for stopping the closing movement (high closing speed > 10 mm/s).

3.4.2Displays at the sender and receiver

Display at the sender

Fig. 10: Display at the sender

LED: Yellow

An LED on the sender displays the status.

Operating instructions

Operating instructions

V4000 PB

3.4.4PBI (press brake interface)

Fig. 12: PBI (press brake interface)

The incremental measurement guides of the press controller register the movement of the press crosshead. The speed and direction of movement of the press crosshead and the overall machine overrun are calculated by the V4000 PB from the signals of one measurement guide and from other measured data (such as time).

The measurement guide is connected to the V4000 PB via the PBI in the control cabinet. At the interface with the press controller the PBI taps onto the signals of the measurement guide, decouples them and passes them on to the receiver.

Position detection must be checked to ensure it is working properly. The V4000 PB monitors whether the signals (increments) from the measurement guide have a logical order – in other words, whether they can be interpreted unambiguously as upward or downward movement or standstill.

Example

If a start signal for the closing movement is detected by the safety-relevant inputs, it will be assumed that the press brake is moving after a period of delay (start-up delay). If there is no movement – in other words, the signals from the PBI cannot be unambiguously interpreted as movement – the V4000 PB assumes that there is a fault in position detection, switches the OSSDs into the OFF state, and goes into lock-out state.

The system will not change into the muting state unless the measurement system is delivering correct information which agrees with the expected values.

Note For more information see the Sections 3.5 «Possible device configurations» and 9.4 «Extended diagnostics via CDS».

Operating instructions

Fig. 15: System configuration without PC control

This section describes the parameters and functions of the V4000 PB which can be configured via CDS.

Check the V4000 PB after making changes!

After making any change to the configuration you must check the effectiveness of the V4000 PB (function and configuration data).

When starting to configure the V4000 PB, you may save the configuration using an application name with a maximum of 22 characters. You should use unique designations with an evident relation to the concrete application name – such as «Machine name XYZ».

Operating instructions

Tab. 7: Configurable parameters and functions

With the CDS the V4000 PB can be configured to accept operator signals (alignment, teach-in, reset, and selection of the protective mode) either from the CDS software or from external touch elements such as buttons or selector switches. Use of CDS to provide these operator signals requires a dedicated permanent (on-line) communication interface between the V4000 PB and CDS via a RS-232 port.

Another method for providing operator signals to the V4000 PB is via the HMI of the numerical control. These signals could be collected via touch buttons connected to the NC interface or via software buttons on the HMI console.

Note Signals of the operating elements of the CDS overwrite signals of the external operating elements. There could be inconsistencies between the system state and the state of the V4000 PB.

nV4000 PB device symbol, context menu Configuration draft, Edit, Basic settings tab

3.5.2Baud rate communication interface

By means of the CDS the baud rate (transmission rate) can be set at the serial interface for configuration (between V4000 PB and connected PC). The setting will depend on how powerful the PC is.

nV4000 PB device symbol, context menu Configuration draft, Edit, Basic settings tab

3.5.3Application name

When starting to configure the V4000 PB, you may save an application name with a maximum of 22 characters.

Here you should use unique designations with an evident relation to the concrete application name – such as «Machine name XYZ».

nV4000 PB device symbol, context menu Configuration draft, Edit, Basic settings tab

3.5.4Repetition interval of power-up cycle

The V4000 PB has an internal time monitor for certain functions. The time monitor should ensure a regular check is made in the case of uninterrupted operation. The start times are saved and compared with the current state. If the time for a particular function has elapsed, a corresponding operator action will be requested.

Following an interruption to the supply voltage all times will be reset to zero.

The V4000 PB monitors the time since the last power-up cycle and requests a new powerup cycle if the configured value (≤ 24 h) is exceeded.

nV4000 PB device symbol, context menu Configuration draft, Edit, Basic settings tab

Operating instructions

V4000 PB

3.5.5Mounting of receiver

In back-stop mode, the active protective volume segment as seen from the operator side is behind the pressure axis.

In order to place the active protective volume correctly, it is necessary to specify during configuration on which side of the press brake (as seen from the operator side) the receiver is mounted.

nV4000 PB device symbol, context menu Configuration draft, Edit, Basic settings tab

3.5.6Speed-dependent muting

Any one of the following conditions will result in automatic muting of the V4000 PB (inactivation of the protective volume):

Gap size ≤ 6 mm above the taught-in pinch point

Upward movement

In addition a closing movement at a low closing speed vcrawl (≤ 10 mm/s) will also cause the system to go automatically into muting mode provided this option has been enabled

during configuration.

The closing speed is continually monitored. If the slow closing speed vcrawl is exceeded in the muting state, muting will be deactivated and the protective volume activated.

With automatic muting at the slow closing speed vcrawl it is possible for the press brake to close at slow closing speed despite an interruption of the protective volume.

If slow closing speed vcrawl has not yet been reached when the protective volume is interrupted, the press will be stopped. After this the press brake can be closed at slow

closing speed via the press controller and a new start signal.

If slow closing speed has already been reached when the protective volume is interrupted, a new start signal will not be needed.

Note If a slow closing speed (≤ 10 mm/s) is permitted by the applicable regulations as the sole protective measure, the option may be activated by the machine setter. In ANSI standard B11.3 «Safety Requirements for Power Press Brakes» the slow closing speed

(≤ 10 mm/s) is not specified as the sole protective measure!

nV4000 PB device symbol, context menu Configuration draft, Edit, Basic settings tab

3.5.7Position-sensing system

The measurement guides (incremental encoders) of the press controller register the position of the press crosshead.

Increments per mm stroke

The V4000 PB requires the resolution of the incremental encoder [INC/mm] in order to calculate the speed and direction of movement of the press crosshead and the overall machine overrun from the signals of one measurement guide and from other measured data (such as time).

The incremental encoder must support two channels with at least 45 INC/mm and a maximum of 300 INC/mm at a closing speed of 300 mm/s. The recommendation is 50 INC/mm.

The specifications of the encoder manufacturer can differ from those for the V4000 PB. If, for example, pulses/mm or a resolution of 10 μm is specified, these have to be converted into increments/mm.

Measurement direction during closing movement

The 0° and the 90° signal of the incremental encoder are phase-shifted. During a closing movement (positive sign) the V4000 PB expects the 0° signal to be leading.

Fig. 16: Incremental encoder signals

ON

0° signal

OFF

ON

90° signal

OFF

Note When connecting the incremental encoder channels, make sure that they do not swapped or interchanged as this would lead to the direction of movement being misinterpreted. If a measurement guide is replaced, you will need to check the configuration and input the resolution of the new measurement guide into the configuration.

nV4000 PB device symbol, context menu Configuration draft, Edit, Basic settings tab

3.5.8External device monitoring (EDM)

The EDM checks if the contacts actually de-energise when the protective device responds.

If an external device monitor is present, external device monitoring must be activated in the CDS. The V4000 PB will then check the contacts every time the protective volume is interrupted and before the press brake restarts.

The external device monitor can tell whether a contact is welded or whether a contact/ relay has not de-energised due to a different mechanical fault. If, due to the failure of a contactor, the system cannot go into a safe operating state the OSSDs will go into the OFF state, the V4000 PB changes to lock-out state and a reset becomes necessary.

nV4000 PB device symbol, context menu Configuration draft, Edit, Basic settings tab

3.5.9Default value for braking distance

Note The Braking distance tab only has to be configured if the press brake supports two speeds

(vp and vslow) and Vslow is connected.

During the power-up cycle, the braking distance (transition from the high closing speed to the target speed vslow) is also determined.

From the braking distance and the pinch point (which was determined during teach-in) the positions for the switch-over and muting points are calculated.

The CDS includes a default value of 30 mm for the braking distance which may not, under any circumstances, be exceeded by the measured braking distance.

nV4000 PB device symbol, context menu Configuration draft, Edit, Braking distance tab

During the power-up cycle, the braking distance (transition from the high closing speed to the target speed vslow) is also determined. The travel for determing the braking distance is the distance the press requires to accelerate to the high closing speed and then brake down again to the target speed vslow.

The CDS includes a set value of 30 mm for the travel for determining the braking distance.

nV4000 PB device symbol, context menu Configuration draft, Edit, Braking distance tab

3.5.11Braking offset

During braking to the target speed vslow, vibrations in the V4000 PB and braking distance fluctuations may occur.

The design of the V4000 PB specifies that the vibration tolerance of the V4000 PB for gap sizes from 6 mm to 26 mm increases from ±4 mm to ±7 mm.

With the braking offset the gap size at which the target speed vslow is reached is increased.

The braking offset is added to the braking distance calculated from the power-up cycle:

With a braking offset of 6 mm the target speed vslow is reached at the muting point (6 mm above the pinch point).

If a braking offset of more than 6 mm is selected, the switch-over point will be shifted upwards.

The V4000 PB requests the target speed vslow before the calculated switch-over point. The press brakes earlier and thus reaches the target speed vslow before the muting point.

nV4000 PB device symbol, context menu Configuration draft, Edit, Braking distance tab

3.5.12Target speed vslow for determining the braking distance

In the determination of the braking distance, the target speed vslow is the speed which the press must reach after the braking procedure.

The CDS specifies a set value of 10 mm/s for the target speed.

nV4000 PB device symbol, context menu Configuration draft, Edit, Braking distance tab

3.5.13Monitoring of the slow closing speed vcrawl from the pinch point

The slow closing speed (vcrawl) is monitored from the pinch point at bending processes where the V4000 PB cannot be active (for example within a box).

If vcrawl (≤ 10 mm/s) is exceeded, a stop command is output to the downstream control system and the V4000 PB changes to the lock-out state.

nV4000 PB device symbol, context menu Configuration draft, Edit, Braking distance tab

3.5.14Maximum closing speed and maximum overall machine overrun

Maximum closing speed

The following values are defined for the closing speed:

During configuration the maximum closing speed of the press is input as the maximum closing speed vmax. This speed must not be exceeded in any operating cycle.

The press crosshead travels at high closing speed (>10 mm/s) up to the switch-over point. The high closing speed vp is continually monitored.

Should the press brake exceed the high closing speed of the last power-up cycle a new power-up cycle will be needed. During the power-up cycle, the high closing speed vp and the overall machine overrun D (as a function of the high closing speed) are determined. The high closing speed must be less than or equal to the configured maximum closing speed.

Note The configured maximum closing speed in combination with the configured maximum overall machine overrun must not exceed the stopping distance of the V4000 PB and will therefore need to be checked during configuration.

nV4000 PB device symbol, context menu Configuration draft, Edit, Overall machine overrun tab

Maximum overall machine overrun

The following values are defined for the overall machine overrun:

Dmax = maximum overall machine overrun (depends on machine design), held in the configuration

D = overall machine overrun which is reached with the current emergency stop and is measured by the V4000 PB

During configuration the maximum overall machine overrun of the press is input as the maximum overall machine overrun Dmax. This overall machine overrun must not be exceeded in any emergency stop.

During the closing movement of the press, and after an emergency stop, the press brake will continue to run for a distance (overall machine overrun D) which is less than the maximum machine overrun Dmax.

If the distance exceed the maximum machine overrun, Dmax, the V4000 PB will require a new power-up cycle.

During the power-up cycle, the high closing speed vp and the overall machine overrun D (as a function of the high closing speed) are determined.

At every emergency stop the overall machine overrun is measured. Should the overall machine overrun measured exceed the value of the overall machine overrun of the last power-up cycle the V4000 PB will switch into its lock-out state.