Output Specifications - Renishaw TONiC FS T40x1 Series Functional Safety Manual

Output specifications
Analogue output signals
Incremental 2 channels V
and V differential sinusoids in quadrature (90° phase shifted)
1 2
20 µm
(V +) − (V −)
1 1
0°
(V +) − (V −)
2 2
Reference
45°
(V +) − (V −)
0 0
360° (nominal)
Limits Open collector output, asynchronous pulse (limit signals for information only)
Ti0000 interface only
Active high
Repeatability <0.1 mm
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.
*
Ti0000 set-up
3.3 (nom)
Voltage
at V
X
0
0 50% Signal level 70%
Between 50% and 70% signal level, V is a duty cycle.
X
Time spent at 3.3 V increases with incremental signal level.
At >70% signal level V is nominal 3.3 V.
X
TONiC RESM20 Functional Safety installation guide and safety manual
0.7 to 1.35 Vpp with Green LED
indication (readhead) and 120R
termination.
Centred on 1.65 V.
NOTE: DOP centred on 2.5 V.
0.8 to 1.2 Vpp
Bi-directionally repeatable.
Differential pulse V , centred on 45°.
0
Differential signals V + and V − centred on ~1.65 V
0 0
NOTE: DOP centred on 2.5 V.
T40x1 readhead only
Active low
Repeatability <0.1 mm
V V
p q
Length of limit actuator
100%
*
Set-up signals as shown are not present during calibration routine.
Digital output signals (DOP only)
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.
Limits Open collector output, asynchronous pulse (limit signals for information only)
Active high
Repeatability <0.1 mm
P Q
Length of limit actuator
Alarm
†
Line driven (Asynchronous pulse)
>15 ms
E
Alarm asserted when:
– Signal amplitude <20% or >135%.
– Readhead speed too high for reliable operation.
or 3-state alarm
Differentially transmitted signals forced open
circuit for >15 ms when alarm conditions valid.
†
Inverse signals not shown for clarity.
Original instructions
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
*
DOP set-up
1
Voltage
at V
X
0
0 Signal level
Set-up signal voltage proportional to incremental signal amplitude.
100%
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