Lenord+Bauer GEL 293, Руководство по эксплуатации

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Bauer 3 Description
Functional principle
GEL 293
31
English
3.3 Functional principle
The sensor’s magnetic field inside the encoder is changed by the passing of the inte-
grated target wheel. The change in the magnetic field is detected by the sensor and is
converted into sinusoidal measuring signals. An internal interpolation electronic gen-
erates the rectangular output signals and, optional, a speed-dependent current from
the sinusoidal signals.
3.4 Signal patterns
Exlanations on the following illustrations:
V
S
= Supply voltage
V
Sig
= Signal amplitude
1, 2 = Track 1, Track 2
N = Reference track (optional)
The signals are shown for clockwise rotation when looking onto the encoder flange.
S(N) – Separate signal and direction tracks
1
2
N
t
i
t
s
t
i
Pulse width
t
s
Delay time
V
S
V
Sig
10 to 30 VDC HTL
t
i
t
S
5 µs 2 µs
20 µs 10 µs
100 µs 10 or 30 µs
In the case of a direction change the pulses will follow slightly delayed (t
s
), so that a
subsequent counting electronic can react without lost of a pulse. The direction signal
(Track 1) can be inverted.
The signal pulse width is marked down on the identification plate. The delay time t
s
has
been set dependent on it.
V(N) – Two-track signal
1
2
N
t
F
90°
360° el.
t
F
Edge distance at 200 kHz ≥ 0.6 s;
valid for the other signal patterns except S(N)
V
S
V
Sig
10 to 30 VDC HTL