Chicago Pneumatic CPF 175, Инструкция

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• Use the Cancel button to return to the operational screen.
3.4 Regulation
Command of the regulation
In the case of ON/OFF regulation, the AIRLOGIC
®
manages:
• The command of unloading when the pressure measured by the analog sensor reaches the idling pressure.
• The command of loading when the pressure measured by the analog sensor reaches the minimum
regulation pressure (loading pressure).
• The command of motor shutdown after a period of idling.
• The restriction on restarting the motor if the pressure in the oil tank is higher than 1.5 bar (21.7 psi) or if
the oil temperature at the outlet of the compression block is less than 2 °C (35.6 °F).
• If it is necessary to intervene on the machine when it is stopped, it should be placed in total safety by
cutting off the electrical power supply.
Stop on fault
The following inputs and parameters will stop the compressor on fault when their status switches (for inputs)
or when their value crosses the predefined values (top or bottom limits for the analog parameters or inputs):
• Input : Emergency stop
• Input : Motor overload
• Input : Turbine motor overload
• Input : Phase controller (option)
• Input : External fault (dryer, filter, other equipment …)
• Analog Input: temperature in outlet of compression block. In addition to the value of this temperature, its
increase is also monitored during about 15 seconds after the starting of the compressor. If the temperature
does not increase sufficiently, the controller considers that the motor is running in the wrong direction
(the air is not compressed therefore the air is not heated) and stops the compressor. It is then necessary to
cut off the power supply to the compressor, interchange the two phases of the supply to the main motor,
then restart the power. This error cannot be cancelled by manipulations of the controller!
• Analog input: dryer temperature (estimate of the dew point set as a dryer "LAT parameter") too high or
too low. There will be a warning if the temperature moves out of these high and low limits.
• Analog input internal pressure: this input replaces the high and low pressure switches of older regulation
systems. If the internal pressure of the tank is too high, the controller displays a first warning notifying
the user that the pressure is approaching dangerously close to the maximum limit. Then an error will be
triggered (and shutdown the compressor) if the pressure continues increasing.
• Parameter differential pressure: a calculation of the difference of pressure between the machine outlet and
the internal tank also replaces the differential pressure switches.
• Analog Input : motor temperature (sensors in option on certain machines)
Warning before stop on fault
Most of the values measured or calculated have before fault warning thresholds whose values are slightly
below (or above) the maximum (or minimum) fault thresholds. The operator is warned that the operation of
the compressor is approaching an error threshold.
Control mode
The AIRLOGIC
®
has three control modes, Local/Remote/LAN.
Instruction book
28 2920 1804 00