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Lenze · 8400 HighLine · Reference manual · DMS 12.0 EN · 06/2017 · TD23
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17
Function library
17.1
Function blocks | L_Interpolator_1
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17.1.95.2 Signal monitoring
If signal monitoring is active (
= 1), the signal characteristic of the
dnPhIn_p
input signal
is continued even if the data telegram is missing (setpoint selection via CAN).
Monitoring is performed on the basis of the
dnPhIn_p
position setpoint and the
bSpeedAct0
status
signal:
• If the
dnPhIn_p
position setpoint remains the same in the next device cycle, it is either because
the speed is zero or because no data telegram has been received.
• The evaluation of the
bSpeedAct0
status signal gives information about which reason applies.
This status signal needs to be transmitted by the setpoint source to ensure trouble-free
operation:
•
bSpeedAct0
= FALSE means that the speed is not zero, so an error is assumed: The signal
characteristic of the
dnPhIn_p
input signal is completed (the current slope is retained).
•
bSpeedAct0
= TRUE means that the speed is zero, so the unchanged position setpoint is not
treated as an error.
• If the number of missing data telegrams exceeds the limit value parameterised in
, the
bSignalError
output is set to TRUE.
• The
bSignalError
output is automatically reset to FALSE if correct signals are detected at
dnPhIn_p
and
bSpeedAct0
again.
Note!
Do not change the number of interpolation steps during operation. Otherwise the
interpolation becomes inaccurate.
Note!
The
nNIn_a
analog value is not monitored!