Renishaw RGH40 RESR40, Руководство по установке, Страница: 15 / 17

RGH40 RESR installation guide
Analogue output signals - RGH40A
Output specifications
Digital output signals - RGH40T, D, G, X, N, W, Y, H
Form - Square wave differential line driver to EIA RS422A (except limit switch P, Q, Alarm E − and external set-up signal, X)
20 ms minimum
E−
Between 50% and 70%
signal level X is a duty cycle.
Time spent at 5 V increases
with signal level.
At >70% signal level X is
nominal 5V.
Set-up
Voltage at X
5 (nom)
50%
70% 100%
0
0
signal level
Limit
open collector output, asynchronous pulse
P Q
Repeatability <0.1 mm typical
Length of actuating magnet
Incremental
†
2 channels A and B in quadrature (90° phase shifted)
Reference
†
Signal period P
Resolution S
A
B
Z
†
Inverse signal not shown for clarity
Synchronised pulse Z, duration as resolution S.
Repeatability of position (uni-directional)
maintained within ±10 °C from temperature at
time of phasing and for speeds <250 mm/s.
For RGH40N, W, Y, H only Z pulse
re-synchronised at power-up with any one of
the quadrature states (00, 01, 11, 10).
Limit
open collector output, asynchronous pulse
V
p
V
q
Repeatability <0.1 mm typical
Length of actuating magnet
Incremental 2 channels V
1
and V
2
differential sinusoids in quadrature
(90° phase shifted)
0.7 - 1.2 Vpp with green
LED indication and 120
Ω
termination when signal is
differentially received
40 µm
90°
(V
1
+) − (V
1
−)
(V
2
+) − (V
2
−)
Differential pulse V
0
− 18° to 108°.
Duration 126° (electrical).
Repeatability of position (uni-directional)
maintained within ±10 °C from
temperature at time of phasing and
for speeds <250 mm/s
108° − 18°
0°
0.8 to 1.2 Vpp
(V
0
+) − (V
0
−)
Reference
13
Model P (µm) S (µm)
RGH40T
40 10
RGH40D 20 5
RGH40G 8 2
RGH40X 4 1
RGH40N 1.6 0.4
RGH40W 0.8 0.2
RGH40Y
0.4 0.1
RGH40H 0.2 0.05
Alarm
RGH40T, D, G and X
Alarm output asserted when <15% signal
Option Alarm type
05 single ended line driven output
06 3-state output
RGH40N, W, Y and H
Options 61, 62 and 63
Single ended line driven output alarm asserted when >150% signal
or overspeed
3-state output alarm asserted when <15% signal
Line driven alarm output
3-state alarm output
Differentially transmitted signals forced open circuit for >20 ms when alarm
conditions valid.