Output Specifications - Renishaw RGH24 Installation Manual

Output specifications

Digital output signals - type RGH24D, X, Z, W, Y, H, I and O
Form - Square wave differential line driver to EIA RS422A
Incremental
2 channels A and B in quadrature (90° phase
=
Signal period P
Resolution S
A
B
Reference
=
Z
Synchronised pulse Z, duration equal to the resolution.
Repeatability of position (uni-directional) maintained
within ±10 °C from installation temperature and for
speed <250 mm/s.
Actuation device: A-9541-0037 or A-9531-0250
Limit
Asynchronous pulse
Repeatability <0.1 mm typical
Q
NOTE: RGH24 readheads are available with reference mark
or limit switch detection. Select output at order.
Length of actuating
Actuation device: A-9541-0040 or A-9531-0251
magnet
NOTE: Limit output not available for readheads with option 60, 61 and 62.
Alarm
3-state alarm
Incremental channels forced open circuit for >20 ms when signal too low for reliable operation.
For RGH24W, Y, H, I and O only, incremental channels forced open circuit for >10 ms when signal
too low or speed too high for reliable operation.
= Inverse signals not shown for clarity
RGH24 RGS20 installation guide
shifted)
Model
P (µm) S (µm)
RGH24D 20
5
RGH24X 4
1
RGH24Z 2 0.5
RGH24W 0.8 0.2
RGH24Y 0.4 0.1
RGH24H 0.2 0.05
RGH24I 0.08 0.02
RGH24O 0.04 0.01
Analogue output signals type RGH24B (1Vpp)
Incremental
2 channels V and V differential sinusoids in quadrature (90° phase shifted)
1 2
20 μm
(V +) - (V -)
1 1
90°
(V +) - (V -)
2 2
Reference
0.8 to 1.2 Vpp
(V +) - (V -)
0 0
-18° 108°
0°
0.6 to 1.2 Vpp with
green LED indication
and 120R termination.
Differential pulse V - 18° to 108°.
0
Duration 126° (electrical).
Repeatability of position (uni-directional) maintained
within ±10 °C from installation temperature and for
speed < 250 mm/s.
Actuation device: A-9531-0037 or A-9531-0250
9