Signals From Axis/Spindle (Db31 - Siemens SINUMERIK 828D Function Manual

Z1: NC/PLC interface signals
19.2 Axis monitoring, protection zones (A3)
19.2.4

Signals from axis/spindle (DB31, ...)

DB31, ...
Encoder limit frequency exceeded 1
DBX60.2 - DBX60.3
Encoder limit frequency exceeded 2
Edge evaluation: no
Signal state 1 or The limit frequency set in the machine data:
edge change MD36300 $MA_ENC_FREQ_LIMIT (encoder limit frequency)
0 → 1 has been exceeded.
The reference point for the position measuring system involved has been lost (IS: Referenced/
synchronized has a signal state 0). Closed loop position control is no longer possible. Spindles
continue to run with closed-loop speed control. Axes are stopped with a fast stop (with open-circuit
position control loop) along a speed setpoint ramp.
Signal state 0 or The limit frequency set in machine data:
edge change MD36300 $MA_ENC_FREQ_LIMIT
1 → 0 is no longer exceeded
(encoder frequency < ENC_FREQ_LIMIT_LOW).
For the edge change 1 → 0, the encoder frequency must have fallen below the value of machine
data:
MD36302 $MA_ENC_FREQ_LIMIT_LOW
1656
Signal(s) updated: cyclic
Function Manual, 09/2011, 6FC5397-0BP40-2BA0
Basic Functions