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

Functions, monitoring, and protective functions
9.4 Extended functions
Parameters
• p2530
• p2532
• p2542
• p2543
• p2544
• p2545
• p2546
• p2547
• p2548
• p2551
• p2554
• r2563
• r2683.8
• r2683.9
• r2684
9.4.5.4

Measurement probe evaluation and reference mark search

Description
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
evaluation.
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) indicates
the presence of the measurement value required r2523 (position for reference mark or
measurement probe).
Once the function is complete (position determined for reference mark or measurement
probe), r2526.1 (reference function active) and r2526.2 (measurement valid) continue to
remain active and the measurement is provided by r2523 (reference measurement) until the
362
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
Drive converter cabinet units
Operating Instructions, 07/07, A5E00288214A