Output Specifications - Renishaw TONiC FS T301 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
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 RSLM20/RELM20 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.
T301 readhead only
x
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
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 X
0
0 Signal level
Set-up signal voltage proportional to incremental signal amplitude
100%
20