Burkert Type 8709 - Manual (Page 37)

37
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
description
unused No function is assigned to the binary output.
Power on The power supply is on.
Autotune active The Autotune function is active.
Gas 1 or 2 active The calibration curve 1 or 2 is currently selected.
User-defined calibration active The device operates at the calibration adjusted by customer.
Binary input 1, 2 or 3 active Binary input 1, 2 or 3 is set.
Activate binary output by field bus The status of the binary outputs is specified via the field bus or the
serial interface.
Correct safety value active The set safety value has been corrected.
Set-point value profile active The set-point value profile stored in the device has been corrected.
Control mode active The control mode is active, i.e. the specified set-point value is outputed
directly as an actuating variable of the proportional valve.
Close valve completely active The close valve completely function is activated.
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. A
too high or too low power requirement, may for example, 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 of the sensor 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.
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 actual value has exceeded or dropped below a freely adjustable
limit value.
w limit The set-point value has exceeded or dropped below a freely adjustable
limit value.
y2 limit The actuating variable has exceeded or dropped below a freely
adjustable limit value.
Totalizer limit The totalizer has exceeded or dropped below a freely adjustable limit
value.
Binary output functions Table 7:
english
Type 8718, 8719 / 8708, 8709