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Output specifications
Digital output signals
Form – Square wave differential line driver to EIA RS422A (except limits P and Q)
Incremental * 2 channels A and B in quadrature (90° phase shifted)
Signal period P
Resolution S
A
B
Reference *
Z
Synchronised pulse Z, duration as resolution.
†
Bi-directionally repeatable.
Limits Open collector output, asynchronous pulse
(Not available with 'A' cable termination)
Active high
Repeatability < 0.1 mm
P Q
~ Length of limit actuator
Alarm
Line driven (Asynchronous pulse)
(Not available with 'A' cable termination)
E−
Alarm asserted when:
– Signal amplitude < 20% or > 135%
– Readhead speed too high for reliable operation
> 15 ms
or 3-state alarm
Differentially transmitted signals forced open circuit for > 15 ms when alarm conditions valid.
*
†
Inverse signals not shown for clarity
Only calibrated reference mark is bi-directionally repeatable
QUANTiC RKLC40-S linear installation guide
Resolution
P ( µm)
S ( µm)
option code
T
40
10
D
20
5
X
4
1
Z
2
0.5
W
0.8
0.2
Y
0.4
0.1
H
0.2
0.05
NOTE: A wide reference mark option, outputting
a reference pulse for the duration of the signal
period is available. Contact your local Renishaw
representative for more information.
‡
Set-up signal as shown is not present during calibration routine
Analogue output signals
Incremental 2 channels V
and V
differential sinusoids in quadrature, centred on ~1.65 V (90° phase shifted)
1
2
40 μm
(V
+)−(V
−)
1
1
0°
(V
+)−(V
−)
2
2
Reference
45°
(V
+)−(V
−)
0
0
360° (nom)
Limits Open collector output, asynchronous pulse
Active high
Repeatability < 0.1 mm
V
V
P
Q
~ Length of limit actuator
Set-up
‡
3.3 V (nom)
Voltage
at V
X
0
0
50%
Signal level
0.7 to 1.35 Vpp with Green LED (AGC off)
and Blue LED (AGC on) indication
(readhead) and 120R termination.
0.8 to 1.2 Vpp
†
Bi-directionally repeatable.
Differential pulse V
centred on 45°.
0
Between 50% and 70% signal level, V
Time spent at 3.3 V increases with incremental signal
level. At > 70% signal level V
is nominal 3.3 V.
X
70%
100%
is a duty cycle.
X
19
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