Burkert 8791 REV.2, Operating Instructions Manual, Page: 35 / 81

35
Operation
9.4 Error notifications
9.4.1 Notifications on device status: Out of specification
Message Description Measure
Temperature warning
limit exceeded
Ambient temperature is too
high
Reduce ambient temperature Contact
Bürkert Service if problem persists
Temperature warning
limit undershot
Ambient temperature is too low Increase ambient temperature
Voltage is above the
warning limit
Supply voltage is too high Check supply voltage
Voltage is below the
warning limit
Supply voltage is too low Check supply voltage
CMD cable break Cable break in the set-point
value signal. The message is
parameterisable
Check signal line of set-point value
Table 16: Messages
9.4.2 Messages: Actuator is moving to safety position
Message Description Measure
Excess temperature
detected
Device temperature too high
for operation
Reduce ambient temperature Contact Bürkert
Service if problem persists
Low temperature
detected
Device temperature too low for
operation
Increase ambient temperature
Overvoltage detected Supply voltage too high for
device operation
Check supply voltage
Undervoltage detected Supply voltage failure, or
supply voltage too low for
device operation
Check supply voltage. Contact Bürkert
Service if problem persists
Persistent memory unu-
sable: defective or not
available
Reading or writing error of
internal data storage EEPROM
Restart the device. Contact Bürkert Service if
problem persists
BüS event: producer(s)
not found
Assigned external büS pro-
ducer cannot be found
Check signal to büS partner
BüS event: bus con -
nection lost/not available
büS network cannot be found
Check büS network
BüS event: producer is
not operational
Producer not operational in this
state
Check büS producer
BüS event: a device is
using the same address
Another büS participant is
using the same address
Assign a unique address to the device and
büS participant
Type 8791, REV.2
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