Pilot Air PAC Series Users Maintenance And Spare Parts Manual page 17

2 - "ET-IV" CONTROL PANEL
The compressor is fitted with a "control panel" for setting up and monitoring machine operation. The operating
parameters were entered by the Manufacturer during "testing". The parameters were tested for several hours
in the various operating conditions.
The features offered by this electronic control system includes:
•
Fully automatic compressor operation.
•
Real-time operating parameter display.
•
Customization operating parameter.
•
Programming of compressor operation on a daily or weekly basis.
•
Programming and signalling of the Manufacturer's maintenance schedule.
•
Machine self-protection system to signal fault pre-alarms and automatically stop the machine in the
event of serious problems.
•
Remote machine control.
•
Possibility of connecting the compressor via CAN-BUS interface (optional) to other similar compressors
for integrated management of the set of machines.
•
Remote compressor monitoring via personal computer and dedicated software (optional).
Compressor Functioning
Start-up procedure:
•
Press the START (I) button. If no alarms are on, the start-up cycle activates:
•
Stand-by for start-up: the control unit is waiting to verify the following conditions before starting the
compressor:
o
If the machine was switched off or a previous stoppage was executed, the control unit waits 15
seconds before starting the compressor.
The control unit waits for the pressure to go below the value set in the "Load pressure" set before
o
starting the compressor. ("STAND -BY" is displayed)
•
Star compressor start-up: the line and star remote control switch for the time defined in the parameter
"Star/delta time" ("NO LOAD " is displayed)
•
Transition from star to delta: the remote control switch for the line remains active, while the star relay is
deactivated; this phase lasts for the set time of 20 msec. ("NO LOAD " is displayed.
•
Fully operational compressor start-up: the line relay is maintained active and also the delta relay is
activated; this phase lasts for the time set in the parameter "Load delay". ("NO LOAD" is displayed)
•
Compressor loading phase: the solenoid valve relay of the load is active. This phase lasts until the
pressure measured reaches the pressure set in the parameter "No load pressure". ("LOADED" is
displayed).
•
Compressor no load phase: the solenoid valve relay of the load is deactivated; this phase lasts as long as
set in the parameter "No load time". After this, the cycle re-starts from the Start-up stand-by phase ("NO
LOAD" is displayed).
17 | P a g e
Start-Up and Operation
PLUS 56-75-Cod.197DD8805