Burkert 8718 Operating Instructions Manual page 37

Type 8718, 8719 / 8708, 8709
Operation and function
Binary outputs
The LFC / LFM feature binary outputs to indicate operating states, and limit values which exceed maximum/
drop below minimum or faults.
Possible binary output functions
Function
unused
Power on
Autotune active
Gas 1 or 2 active
User-defined calibration active
Binary input 1, 2 or 3 active
Activate binary output by field bus
Correct safety value active
Set-point value profile active
Control mode active
Close valve completely active
Open valve completely active
Defective power requirement
Defective internal power supply
Defective power supply of the
sensor
Defective data storage
Sensor fault
MFI fault
x limit
w limit
y2 limit
Totalizer limit
Table 7: Binary output functions
Description
No function is assigned to the binary output.
The power supply is on.
The Autotune function is active.
The calibration curve 1 or 2 is currently selected.
The device operates at the calibration adjusted by customer.
Binary input 1, 2 or 3 is set.
The status of the binary outputs is specified via the field bus or the
serial interface.
The set safety value has been corrected.
The set-point value profile stored in the device has been corrected.
The control mode is active, i.e. the specified set-point value is out-
puted directly as an actuating variable of the proportional valve.
The close valve completely function is activated.
The open valve completely function is activated.
The power requirement of the device is monitored.
If this value is outside defined limits, this function is actuated. A
too high or too low power requirement, may for example, indicate a
defective device.
The operating voltage of the device is monitored.
If the defined limits exceed the maximum or drop below the
minimum, this function is actuated.
The power supply voltage of the sensor is monitored.
If the defined limits exceed the maximum or drop below the
minimum, this function is actuated.
If data storage is in the non-volatile memory of the device, a fault
has occurred.
The device is able to detect a defective sensor via a self-test.
If this is the case, this function is activated.
The field bus module (MFI) is defective or incorrectly equipped.
Field bus communication is not possible.
The actual value has exceeded or dropped below a freely
adjustable limit value.
The set-point value has exceeded or dropped below a freely
adjustable limit value.
The actuating variable has exceeded or dropped below a freely
adjustable limit value.
The totalizer has exceeded or dropped below a freely adjustable
limit value.
english
37