Controls And Settings - Schneider Airsystems Air Master Serie Manual De Instrucciones

COMMAND BOARD (FIG.5)
• The electronic control unit allows to
manage all functions relative to the start-up and
switch-off of the compressor. It also signals any
anomalies and supplies information regarding
functioning times and the carrying out of
maintenance operations.
1) Display on which the information is
visualised.
2) OK key: to confirm settings (see "Adjustable
parameters" paragraph)
3) Arrow keys: used to scroll the menu.
4) Alarm signal warning light: if this warning
light switches on followed by the shutdown of the
compressor it means that maintenance is
required or malfunctioning has occurred. Refer
to the "Alarm messages" paragraph in order to
identify the intervention to be carried out.
5) Reset key: used to silence an alarm (see
the "Alarm messages" paragraph).
6) ON/I key: machine switch-on.
The switch-on cycle is divided into three phases.
• Switch-on standby: the STAND-BY message is visualised: if the compressor has been switched off 15 seconds are required
before the cycle starts, otherwise the compressor waits for a request for air by the pressure transducer.
• Start-up: the compressor is started in the "star" configuration and the EMPTY message is visualised
• Normal start-up: after five seconds the configuration is changed from star to triangle
If the transducer makes a request, after two seconds the load electrovalve is excited and the LOAD message is visualised.
N.B. The cycle described is valid for compressors with remote starter, for machines with direct start-up the compressor starts
immediately after the STAND-BY phase
7) OFF/0 key: machine switch-off.
Enabling of the load electrovalve is interrupted, the empty cycle is started and the flashing EMPTY message is visualised. At the
end of the empty cycle the compressor switches off and the "OFF" message is visualised.
8) Emergency stop switch: used to stop the compressor suddenly only in the case of real emergency.
9) Functioning layout / maintenance memorandum.
FUNCTIONING TIMES
Automatic operation
• In inverter-controlled operation, the compressor runs continuously based on a preset fixed pressure (factory setting)
and automatically regulates motor rotation frequency to constantly meet the demand for compressed air. In other words, the
compressor operates in such way to match air supply to actual plant requirement.
When there is no air demand, the compressor runs at the set minimum frequency.
Upon reaching "unloaded" pressure – which is calculated by the formula operating pressure + (start enable delta pressure/2)
- the stop procedure begins, while message (STAND-BY) is displayed.
The compressor is started again at a pressure calculated by the formula: operating pressure - (start enable delta pressure/2).
REMOTE SWITCH ON/OFF
• By means of software (optional), it is possible to control the compressor at a distance (the remote control is only activated
if the control unit on the machine is put in the "ON" position).
• This function can also be managed by means of the "remote" contact positioned on the control unit terminal board. In this
case the manual commands are excluded and therefore the unexpected start-up of the compressor can be the cause of accidents
and injury to staff that are in proximity of the machine.
The manufacturer refuses any liability for any damage caused by the lack of signals indicating remote start-up of the compressor.
All modifications must be carried out by specialised staff
.

CONTROLS AND SETTINGS

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