SM-A20758-A/3 3. USAGE
53 2020-10-06
Monitoring overactive state of solenoid valve
Monitoring overactive state of solenoid valve
The IO-Link communication can be used to monitor the operating status of the two solenoid valves used
inside the EVD and obtain data.
An overactive state can occur even when the product is operating normally. Analyze this information on
the overactive state to help select a model (EVD-1000 or EVD-3000, etc.) for your system.
For the overactive state, refer to "7 References".
<Example of use that tends to cause the overactive state>
• Blow control
• Filling large tanks with air, etc.
Acquired data
The following parameters are used to inform the status of the solenoid valve.
Solenoid valve energizing time (Index: 0x0400)
Measure time in which the "Start/Stop" bit of the Process Data IN is set to "1".
Reading this index returns solenoid valve energization time in unit of time (h).
Operating time in overactive state of air supply-side solenoid valve (Index: 0x0401)
Measure time in which the air supply-side solenoid valve is operating in the overactive state.
Reading this index returns the operating time in the overactive state of the air supply-side solenoid
valve in unit of time (h).
Number of operations in overactive state of air supply-side solenoid valve (Index: 0x0402)
Count the number of the operations in overactive state of the air supply-side solenoid valve.
Reading this index returns the number of the operations in overactive state of the air supply-side
solenoid valve.
The number of operations is counted when the state is determined to have changed from the
non-overactive state to the overactive state.
Operating time in overactive state of exhaust-side solenoid valve (Index: 0x0403)
Measure time in which the exhaust-side solenoid valve is operating in the overactive state.
Reading this index returns the operating time in the overactive state of the exhaust-side solenoid
valve in unit of time (h).
Number of operations in overactive state of exhaust-side solenoid valve (Index: 0x0404)
Count the number of the operations in overactive state of the exhaust-side solenoid valve.
Reading this index returns the number of the operations in overactive state of the exhaust-side
solenoid valve.
The number of operations is counted when the state is determined to have changed from the
non-overactive state to the overactive state
Note: The solenoid valve overactive state data is saved when the Start/Stop bit (Bit0) of the Process
Data OUT changes from start to stop. At the end of operation of the EVD, be sure to change the
"Set Pressure" of the Process Data OUT to 0 (Bit16-31 = 0) and then Stop (Bit0 = 0) to 0, and
then power off the EVD. For details, refer to "1.5.5 Process data OUT".
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