Burkert 8700 - Page 34

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Operation and function
Type 8700, 8701, 8703, 8705
Function Description
Open valve
completely active
The open valve completely function is
activated.
Defective power
requirement
The power requirement of the device is
monitored. If this value is outside defined
limits, this function is actuated. An excessively
high or low power requirement may indicate a
defective device.
Defective internal
power supply
The operating voltage of the device is
monitored. If the defined limits exceed the
maximum or drop below the minimum, this
function is actuated.
Defective power
supply to the
sensor
The power supply voltage to the sensor is
monitored. If the defined limits exceed the
maximum or drop below the minimum, this
function is actuated.
Defective data
storage
If data storage is in the non-volatile memory of
the device, a fault has occurred.
Sensor fault The device is able to detect a defective
sensor via a self-test.
If this is the case, this function is activated.
MFI fault The field bus module (MFI) is defective
or incorrectly equipped. Field bus
communication is not possible.
x Limit The measured value has exceeded or dropped
below a limit value which can be configured.
w Limit The set-point value has exceeded or dropped
below a limit value which can be configured.
Function Description
y2 Limit The actuating variable has exceeded or
dropped below a limit value which can be
configured.
Totalisator Limit The totalizer has exceeded or dropped below
a limit value which can be configured.
Table 4: Possible relay output functions
English