Signal Monitoring - Lenze 8400 StateLine C Reference Manual

8400 StateLine C | Reference manual
Function library
Function blocks | L_Interpolator_1

Note!
Do not change the number of interpolation steps during operation. Otherwise
the interpolation becomes inaccurate.
16.1.21.2

Signal monitoring

If signal monitoring is active
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
C00952, 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!
The nNIn_a analog value is not monitored!
806
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(C00950/2 = 1), the signal characteristic of the dnPhIn_p input
L
Firmware ≤ 11.00 - DMS 8.0 EN - 10/2011