Commissioning Cerabar PMP21 IO-Link
36 Endress+Hauser
9.7 Application examples
9.7.1 Compressor control with two-point mode
Example: The compressor is started when the pressure drops below a certain value. The
compressor is switched off when a certain value is exceeded.
1. Set the switch point to 2 bar (29 psi).
2. Set the switch-back point to 1 bar (14.5 psi)
3. Configure the switch output as "NC contact" (Mode = Two Point, Logic = High).
The compressor is controlled by the defined settings.
9.7.2 Pump control with two-point mode
Example: The pump should switch on when 2 bar (29 psi) is reached (increasing pressure)
and switch off when 1 bar (14.5 psi) is reached (decreasing pressure).
1. Set the switch point to 2 bar (29 psi).
2. Set the switch-back point to 1 bar (14.5 psi)
3. Configure the switch output as a "NO contact" (Mode = Two Point, Logic = High)
The pump is controlled by the defined settings.
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