Zero Mark Tolerance - Siemens SINAMICS S120 Function Manual

Basic functions
8.21 Tolerant encoder monitoring
If a fault is detected, then fault F3x117
value bit-coded.
Note
For modules CU310-2, CUA32, D410-2 and SMC30 (only article numbers
6SL3055‑0AA00‑5CA0 and 6SL3055‑0AA00‑5CA1), there is only a common signal. If you
connect a square-wave encoder without R track to one of these modules, then if track
monitoring is activated, fault F3x117
To avoid this fault, at the encoder connection, you must connect the "ground encoder supply"
(pin 7) with the "reference signal R" (pin 10), as well as the "encoder supply" (pin 4) with the
"inverse reference signal R" (pin 11).
x = encoder number (x = 1, 2 or 3)
1)
8.21.2

Zero mark tolerance

Overview
The function extension "Zero mark tolerance" allows individual faults to be tolerated regarding
the number of encoder pulses between two zero marks.
Commissioning the function
Set parameter p0430.21 = 1 to activate the function.
If the function is activated, then the following responses are executed:
1. The "zero mark tolerance" function starts to become effective after the 2nd zero mark has
been detected.
2. After this, if the number of track pulses between two zero marks does not match the
configured number of pulses once, then alarm A3x400
distance error) or A3x401
3. The alarm is cleared when the next zero mark is received at the correct position.
4. However, if a new zero mark position error is identified, fault F3x100
error) or Fx3101
x = encoder number (x = 1, 2 or 3)
1)
370
is output. The faulty tracks are included in the fault
1)
is output.
1)
(alarm threshold, zero mark failed) is output.
1)
(zero mark failed) is output.
1)
(alarm threshold, zero mark
1)
(zero mark distance
1)
Function Manual, 06/2019, 6SL3097-5AB00-0BP2
Drive functions