LNS GT 112-E, Инструкция по эксплуатации

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Chapter 5 PNEUMATICS
5 - 5
GT 112-E
5.3.2 Solenoid valve
Directly controlled by the PLC, the solenoid valves activate the cylinders.
To manually activate the air valve press button A.
Attention!
Activating valves requires special attention to prevent bodily injury or components damage.
This button could be kept in the activation position by pressing it down and turning 90° clockwise.
This position could be released by turning it 90° counter clockwise. This device is proved to be
useful during testing or connection. Normal pneumatic cylinder returns to its original position
when releasing the button (except for pneumatic cylinder activated by double-effect solenoid
valve).
5.3.3 Air pressure switch, SP1
To guarantee the compressed air is supplied to the bar feeder
the pressure switch confirms the pressure is sufficient.
The pressure switch engages when the pressure is larger than
60 PSI (4 bar). If the pressure is below 60 PSI, the switch will
disengage and the emergency stop circuit will be interrupted.
An alarm AL05 will be displayed on the HMI screen.
Settings of operating pressure range
1. Set the operating pressure at 60 PSI (4 bar) with screw A
The pressure switch will sense the operating pressure
within a few seconds.
2. Set the lower pressure limit with screw B.
This setup will define when the pressure switch senses an
abnormal pressure drop and generate a low pressure
alarm.
Factory setup is: 43 PSI (3 bar).
A
A
B