Pressure control
15
Application examples
15.2
L
15.2-2
EDS82EV903-1.0-11/2002
Functions used
l
Internal process controller for pressure control
– Pressure setpoint from PLC (4 ... 20 mA)
– Actual pressure value from sensor (0 ... 10 V)
l Manual/remote changeover for setting-up operation at site
– Manual: Pressure setpoint via pushbutton with motor potentiometer
function (UP/DOWN)
– Remote: Pressure setpoint from PLC
l JOG speed for night reduction (activated via PLC).
l Dry-running protection (setpoint-independent min. speed).
l Smooth start along S ramp.
l Suppression of mechanical resonance with a skip frequency.
l PTC motor monitoring.
l Trip error message via digital output.
l Ready for operation via relay output.
l Configurable analog output for actual pressure value.
l Electrical controller inhibit (CINH).
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