
42 - MFC/MFM
english
This function can be activated or reset via a binary input or field bus, depending on
the device configuration.
In this operating mode, the device behaves in general as in standard control
operation. However, an externally applied setting is ignored and a defined safety
value is used as the setpoint (on default: 0 %; this can be changed with the PC
software MassFlowCommunicator).
NOTE
Each MFC has been subjected to the Autotune routine in the factory
during final testing at the operating pressure stated in the calibration
report. For reliable control operation in a system, it is not absolutely
necessary to initiate this function again after commissioning. We
recommend renewed initialization if the operating pressure deviates
by serveral bar from the calibration pressure or if the characteristic
curve of the proportional valve is heavily influenced by a low valve
authority (see
Proportional Valve
). The Autotune routine should also
be executed after significant changes in the pressure conditions in
the system.
Safety function
This function can be activated or reset via a binary input or field bus, depending on
the device configuration.
In this operating mode, the device behaves in general as in standard control
operation. However, the external setting is ignored and a previously definded
temporal sequence of up to 30 flow rates is used as the setpoint (configuration
with the PC software MassFlowCommunicator).
After completion of the setpoint sequence, the device returns to the previous
operating mode.
Setpoint profile
This function can be activated or reset via a binary input or field bus, depending on
the device configuration.
In this operating mode, the setpoint is used as the starting value for the valve
pulse-duty factor,
e.g.: Setpoint = 10 %
valve pulse-duty factor = 10 %.
Control operation
Содержание 8006 Series
Страница 26: ...26 MFC MFM english Fig Type 8712 8702 MASS FLOW CMOSens Fig Type 8713 8703 MASS FLOW CMOSens ...
Страница 27: ...MFC MFM 27 english Fig Type 8716 8706 MASS FLOW INLINE with standard sensor body ...
Страница 74: ...74 MFC MFM deutsch Bild Typ 8712 8702 MASS FLOW CMOSens Bild Typ 8713 8703 MASS FLOW CMOSens ...
Страница 75: ...MFC MFM 75 deutsch Bild Typ 8716 8706 MASS FLOW INLINE mit Standard Sensorblock ...
Страница 122: ...122 MFC MFM français Figure Type 8712 8702 MASS FLOW CMOSens Figure Typ 8713 8703 MASS FLOW CMOSens ...
Страница 123: ...MFC MFM 123 français Figure Type 8716 8706 MASS FLOW INLINE avec corps de capteur standard ...
Страница 148: ...The smart choice of Fluid Control Systems www buerkert com ...