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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
A
B
Reference
…
Z
Wide reference
…
Z
NOTE: Select 'standard' or 'wide' reference at time of ordering, to match the requirements of the controller being used.
Wide reference mark not available on Ti0004 interfaces.
Limits Open collector output, asynchronous pulse
Digital Ti interfaces only
Active high
Repeatability
<0.1 mm
P Q
Length of limit actuator
NOTE: No limits on TD interfaces. P limit becomes E+ for options E, F, G, H.
Alarm
…
Asynchronous pulse
Line driven
>15 ms
E
Alarm asserted when signal level is less than 20% or
greater than 135%. Alarm is also asserted if readhead
speed is too high for reliable operation.
E- output only for Ti options A, B, C, D
or 3-state alarm
Differentially transmitted signals forced open circuit for
>15 ms when alarm conditions valid.
TONiC RTLC-S installation guide
Resolution
Bi-directionally repeatable pulse Z, duration equal to the resolution
Bi-directionally repeatable pulse Z, duration equal to the signal period
or
Active low
Repeatability
<0.1 mm
P Q
Length of limit actuator
Set-up *
1
Voltage
at X
0
0
Signal level
Set-up signal voltage proportional to incremental signal amplitude
Analogue output signals
Incremental 2 channels V
NOTE: Ti0000A00V centred on 2.5
(V
+)-(V
-)
1
1
(V
+)-(V
-)
2
2
Reference
(V
+)-(V
-)
0
0
Differential signals V
NOTE: Ti0000A00V centred on 2.5 V
Limits Open collector output, asynchronous pulse
Ti0000 interface only
Active high
V
V
p
q
Length of limit actuator
NOTE: Ti0000 interface contains a transistor to invert the readhead's 'active low' signal to give an 'active high' output.
Set-up *
3.3 (nom)
Voltage
at V
X
0
0
100%
Between 50% and 70% signal level, V
Time spent at 3.3 V increases with incremental signal level.
At >70% signal level V
and V
differential sinusoids in quadrature centred on 1.65 V (90° phase shifted)
1
2
V
20 µm
0.7 to 1.35 Vpp with Green LED indication,
(readhead) and 120R termination.
0°
0.8 to 1.2 Vpp
45°
Bi-directionally repeatable
Differential pulse V
360° (nominal)
+ and V
- centred on ~1.65 V
0
0
T103
readhead only
x
Repeatability
<0.1 mm
V
V
p
q
Length of limit actuator
50%
Signal level
70%
100%
is a duty cycle, 20 µm duration.
X
is nominal 3.3 V.
X
centred on 45°
0
Active low
Repeatability
<0.1 mm
* Set-up signals as shown are not present
during calibration routine.
…
Inverse signals not shown for clarity
12
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