Burkert 8700 - Page 31

31
Operation and function
Type 8710, 8711, 8713, 8715
8.2.1. LED default assignment
Indicator light status Possible cause
Power indicator (green) on
Power / Autotune
Limit (y)
Error
The device is energized.
Power indicator (green) flashing
Power / Autotune
Limit (y)
Error
The Autotune function is in
progress.
Communication light (yellow)
on
Power / Autotune
Communication
Error
The device is communicating
via the field bus or the serial
interface.
Indicator light status Possible cause
Limit (y) light (blue) on
Power / Autotune
Limit (y)
Error
MFM: indicates that the
measured value has almost
reached the nominal flow-rate.
MFC: indicates that the actuating
variable of the proportional valve
has almost reached 100%. In
practice this usually means that
the pressure on the controller
is not adequate to reach the
required flow-rate.
Limit (y) light (blue) flashing
Power / Autotune
Limit (y)
Error
The device is in an operating
state other than the control mode
or Autotune function.
Error light (red) on
Power / Autotune
Limit (y)
Error
Minor fault, for example the
Autotune function has failed.
Error light (red) flashing
Power / Autotune
Limit (y)
Error
Major fault, sensor damaged,
internal power supply voltage
incorrect or operating pressure
too high.
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