Zero Mark Tolerance - Siemens SINAMICS S120 Function Manual

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If a fault is detected, then fault F3x117

value bit-coded.

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)

Zero mark tolerance

This function allows individual faults to be tolerated regarding the number of encoder pulses

between two zero marks.

Commissioning

1. Set parameter p0430.21 = 1 to activate the "zero mark tolerance" function.

The function runs as follows:

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

distance error) or Fx3101

x = encoder number (x = 1, 2 or 3)

Drive functions

Function Manual, 11/2017, 6SL3097-4AB00-0BP5

is output. The faulty tracks are included in the fault

(alarm threshold, zero mark failed) is output.

(zero mark failed) is output.

Basic functions

7.20 Tolerant encoder monitoring

(alarm threshold, zero mark

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