Omron SYSMAC C Series User Manual page 51

Application examples
Automatic lubricating oil
supplier
Ladder diagram
pe
0000
— DIFU 1000
1000 TIMOO
0500
In this example, the C20 is used to control the supply of lubricating oil to
the gears and bearings of an assembly line. This automatic lubrication
reduces friction and wear on the parts, thus improving the efficiency of
the assembly line and decreasing the amount of energy consumed by
high-power motors.
ae i 5
es shortage alarm JẸ
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Explanation
When the object to be lubricated reaches a predetermined point, the
lubricating oil is applied. in the above illustration, a gear is supplied with
oil. A sensor detects the gear when it comes to a specific position. In
response to the input signal from this sensor, the C20 outputs a signal
that opens an electromagnetic valve. This valve is opened for a set period
of time, supplying a predetermined quantity of oil.
The level of the lubricating oil in the tank is monitored by a sensor that
serves as an input device to the C20. If the oil level in the tank falls below
a specific level, the sensor detects it and inputs a signal to the C20. In
response, the C20 outputs a signal that illuminates an alarm indicator
lamp on the C20's control panel.
1/0 assignment
Position detection
Lower-limit oil level
Output
Electromagnetic valve for oil supply
Oil shortage alarm indicator