P. 51 - Chap. 7 Start-up and operation
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LOAD/UNLOAD is the setting that makes it possible to control full load and unload operation with an
external control logic: in this case, the pressure signal measured by the compressor is ignored for the
purposes of operating method control (the safety devices remain active)
ON/OFF -
LOAD/UNLOAD is the setting that makes it possible to control both switching ON/OFF of the
compressor and also operating mode. In this case also, an external control logic must be used as, for
control purposes, the pressure signal is ignored (the safety devices remain active)
It should be remembered that control via the keyboard of the control unit always has priority over any
remote control or any program: this means that, if remote control is to be effective, the START button
must be pressed setting the compressor to “Stand-by rem. con.”. Similarly, the compressor can be
stopped without any risk of remote restart of this by pressing the STOP key.
Therefore, to enable functioning with remote control:
1) Make the modifications to the wiring connecting one / two switches as described in paragraph 6.5
2) Select REMOTE control
3) Select the control method (ON/OFF, LOAD/UNLOAD, ON/OFF - LOAD/UNLOAD)
4) Press the START key on the control unit to enable the compressor for remote control
Autorestart function
If enabled, this menu makes it possible to set the AUTORESTART function, useful for automatic restart
of the machine following a black-out and subsequent power-up.
7.4.2.4
NETWORK SETTINGS menu
This menu is used to set the parameters required for operation of the compressor in a network (in communication
with other similar compressors)
Refer to chapter 8 “Compressors in sequence”.
The menu is visible only after connection of the control unit with the CAN-BUS interface module for
communication between compressors.
Compressor ID
This is the identifier number of the compressor in a set of machines
Prefill
When the set of compressors is started with the compressed air system discharged (pressure zero or
very low), it is usually necessary to increase the pressure to the minimum working value as quickly as
possible. With the PREFILL function enabled, the compressor participates in system prefilling, bypassing
the global control functions in this phase.
The compressors involved in this operation are started quickly in sequence, thus avoiding any overlap of
the start-up phases of two or more machines
Rotation time
This is the time after which compressor start-up priorities are reassigned so that the work load is evenly
distributed between the machines available over a long period of time
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