Operating States; General Functions - Aventics ECD-LV Betriebsanleitung

AVENTICS | ECD-LV | R412025991–BAL–001–AC | English
Personal injury or property damage caused by non-compliance with specific
technical rules
Operating the ejector system without power packs and without complying with
standard EN 60204 can result in personal injuries and damage to the system and
the connected components.
O Only operate the system using power packs with protective extra-low voltage
(PELV) and safe electric isolation of the supply voltage in accordance with
EN 60204.
O Do not connect or disconnect plug connectors under voltage.

Operating states

4 5
Automatic
When the ejector is connected to the supply voltage, the ejector is ready for operation
and is in automatic mode. This is the normal operating state, in which the ejector is
operated via the system controller (PLC).
Ejector parameterization is always performed in automatic mode.
Manual
The buttons on the ejector can be used to switch the operating state from automatic
operation to "Manual operation".

General functions

In SIO mode, the following functions can be adjusted directly on the ejector.
Open vacuum/exhaust air connections and vacuum cup
Risk of injury by suctioning of eyes or other parts of the body.
Risk of injury due to exhaust air and any other parts and debris that may have
been drawn in being emitted from the exhaust air connection at high speed.
O Never look into vacuum openings, neither suctioning or not suctioning
(e.g. vacuum connections or connected vacuum cups).
O Never look into or enter the exhaust air stream.
Manual operation
Personal injury or property damage due to moving machine/system parts
When setting up in manual operation mode, output signals may change and
external signals (coming from the PLC via the M12 plug) may end manual
operation, which will cause the machine/system to be put into motion.
O Make sure that the machine/system is not put into motion and no persons are
in the transporting area when you are setting up manual operation.
O Make sure that there are no control commands coming from the PLC during
manual operation, and putting the ejector into automatic mode as a result.
Dropping useful load due to lack of vacuum!
Starting manual operation always results in the "pneumatics OFF" operating
state, i.e. active suctioning is interrupted by manual operation. Useful load may
therefore drop.
O Make sure that no persons are located under the useful load in the
transporting area.
In manual operation, the "suction" and "blow-off" ejector functions can be controlled
using the control panel buttons.
The two LEDs "H1" and "H2" flash in this operating mode.
Because the valve protection function is deactivated in manual operation, this
function can also be used to locate and repair leaks in the vacuum circuit.
Activating "Manual operation"
O To activate "Manual operation" mode, simultaneously press and hold the
buttons for >3 s.
The "Manual operation" operating mode is also available without actuator
voltage (emergency OFF, set-up operation in the IO-Link mode).
The current process status is retained when manual operation is first actuated.
Manual suctioning
O To activate the "suction" operating state in "Manual operation" mode, press the
button.
O To exit the "suction" operating state again, press the
once again.
CAUTION
WARNING
WARNING
button or the
If the air economizer has been switched on (ejector variant RD), it will also
be active in "Manual operation" mode.
This also applies when the actuator has no voltage.
The current vacuum value is displayed instead of the error code [E05].
The valve protection function is not active in "Manual operation" mode.
Manual blow-off
O To activate the "blow-off" operating state in "Manual operation" mode, press and
hold the button .
O To exit the "blow-off" operating state, release the button
This also applies when the actuator has no voltage. The current vacuum
value is displayed instead of the error code [E05].
Deactivating "Manual operation"
Danger of injury due to moving objects
Automatic exiting of manual operation by changes to external signals
can put a handling object in motion by suctioning or blowing off.
O Make sure that no objects will be moved and no persons are in the
transporting area when you are exiting manual mode.
O Press the
button to exit the "Manual operation" mode.
The "Manual operation" mode is also exited by changing the status of the external
signal inputs.
Monitoring the system vacuum
Each ejector features an integrated sensor for monitoring the current system
vacuum. The vacuum level provides information about the process and influences
the following signals and parameters:
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Threshold value LED H1
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Threshold value LED H2
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Signal output H2
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Vacuum analog value
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Process data bits H1
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Process data bits H2
The threshold values and associated hysteresis values can be adjusted under
the menu options [H-1], [h-1], [H-2] and [h-2] in the home menu.
Zero-point adjustment for the Sensor (calibration)
We recommend calibrating the sensor after installing the ejector.
To adjust the zero-point of the vacuum sensor, the system's vacuum circuit must
be exhausted into the atmosphere.
The zero-point can only be adjusted in the range of ±3% from the measuring
range's final value.
The error code [E03] appears in the display if the permitted limit of ±3%
is exceeded.
The function for adjusting the zero-point of the sensor is executed using the [CAL]
menu items in the home menu.
Control function
(applies only to variant RD with integrated air economizer function)
This ejector function provides the opportunity to save compressed air. When the set
switching threshold H1 is reached, vacuum generation is interrupted. If the vacuum
drops below the hysteresis threshold H1-h1 due to leakage, vacuum generation
is resumed.
The following operating modes for the control function can be adjusted using the
[ctr] menu item in the configuration menu:
No control (permanent suction)
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Ejector suctions constantly with maximum output
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Recommended for very porous work pieces where the high leakage rate would
result in vacuum generation switching constantly off and back on again
and
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Setting for permanent suction: [ctr = oFF]
This setting ([ctr = oFF]) is only available when control deactivation is
disabled [dCS = oFF].
Control
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Ejector switches off vacuum generation when the threshold H1 is reached
and switches it back on again when the system falls below H1-h1 threshold.
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This setting is particularly recommended for suction-proof work pieces.
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Setting for control: [ctr = on]
button
.
WARNING
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