Balluff BTL6-V11V-M Series, Руководство пользователя

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6.2 Position sensing with the Balluff BTL6‑V11V‑...
Fig. 6-1:
INIT-FRAME T
F
T
I
T
Start
T
Start
T
Stop
T
Stop N
T
I
PLL_Sync_out
START/STOP
T
Magnet
Basic signals for position sensing
Fig. 6-1 displays the basic signals used for position
sensing. The sensing cycle starts with PLL-Sync_out
1)
,
which generates the start pulse. Measurements are taken
between the trailing edge of the start pulse and the trailing
edge of the corresponding stop pulse (see Fig. 6-1).
Time T
Magnet
is available in the position result register (see
Memory address space mapping on page 10).
The PLL_Sync_out time interval must be
defined by the user during startup.
The position of the magnet can be calculated using the
following formula:
P
Magnet
=
(R
Magnet
– Offset) x Multiplier
Divisor
P
Magnet
The current position of the magnet in µm
R
Magnet
Values for the current position of the magnet
in increments (example: result position 1 for
magnet 1)
Offset Offset zero position in increments
1)
Multiplier Length of BTL in µm
1)
Divisor Length of BTL in increments
1)
1) See configuration guide, calibration data
6
Device profile (continued)
BTL6-V11V-M _ _ _ _ -A1-S115
Micropulse AT Transducer in round profile housing