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Parameter Overview
Operation manual
11
A109 PZD-Timeout:
To keep the inverter from continuing with the last received reference values after
a failure of PROFIBUS or the PROFIBUS master, process data monitoring
should be activated. The RX block monitors the regular receipt of process data
telegrams (PZD) which the PROFIBUS master sends cyclically during normal
operation. The A109 PZD-Timeout parameter is used to activate this monitoring
function. A time is set here in milliseconds. The default setting is 65535. This
value and also the value 0 mean that monitoring is inactive. This is
recommended while the inverter is being commissioned on PROFIBUS and for
service and maintenance work.
Monitoring should only be activated for the running process during which a bus
master cyclically sends process data to the inverter. The monitoring time must
be adapted to the maximum total cycle time on PROFIBUS plus a sufficient
reserve for possible delays on the bus. Sensible values are usually between 30
and 300 msec.
When process data monitoring is triggered on the inverter, the fault
"52:communication" is triggered.
* The A109 PZD-Timeout parameter is also used for communication via USS
protocol for the USS-PZD telegram.
Axes: Global
Data type:
Value:
PNU:
206D hex
Subindex:
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ID 441687.03
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