Measuring Probe Evaluation And Reference Mark Search - Siemens SINAMICS S150 NEMA Operating Instructions Manual

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Functions, monitoring and protective functions

9.4 Extended functions

Measuring probe evaluation and reference mark search

Binector inputs p2508 (activate reference mark search) and p2509 (activate measurement

probe evaluation) can be used to trigger and run the "measurement probe evaluation" and

"reference mark search" functions. Binector inputs p2510 (measurement probe selection)

and p2511 (measurement probe edge evaluation) define the mode for measurement probe

The probe signals are recorded via the encoder encoder status and control word. To speed

up signal processing, direct measuring probe evaluation can be activated by selecting the

input terminals for probes 1/2 via p2517 and p2518. Measuring probe evaluation is carried

out in the position controller cycle, whereby the set send clock cycle of the controller

(r2064[1]) must be an integer multiple of the position controller cycle (p0115[4]).

The system outputs a message if the same probe input is already being used (see also

p0488, p0489, p0580, and p0680).

The appropriate function is started using a 0/1 edge at the appropriate input (p2508 (activate

reference mark search) or p2509 (activate measuring probe evaluation)) via the encoder

control word. Status bit r2526.1 (reference function active) reports the activity of the function

(feedback from sensor status word). Status bit r2526.2 (measurement value valid) shows the

presence of the measurement required r2523 (position for reference mark or measurement

CI: LR setpoint position

CI: LR actual position value

LR zero-speed window

LR zero-speed monitoring time

LR positioning window

LR position monitoring time

LR dynamic following error monitoring tolerance

LR cam switching position 1

LR cam switching position 2

BI: LR setpoint message present

BI: LR travel command message active

CO: LR latest following error

Actual position value <= cam switching position 1

Actual position value <= cam switching position 2

CO/BO: EPOS status word 2

Operating Instructions, 12/2018, A5E36652151A

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