22
TONiC RESM20 angle encoder system installation guide
Alarm asserted when:
– Signal amplitude < 20% or > 135%
– Readhead speed too high for reliable operation
E− output only for Ti options A, B, C, D
or 3-state alarm
Differentially transmitted signa
ls forced open circuit for > 15 ms when alarm conditions valid.
Output specifications
Digital output signals
Form – Square wave differential line driver to EIA RS422A (except limits P and Q)
Alarm
†
Asynchronous pulse
Line driven
Limits
Open collector output, asynchronous pulse
Digital Ti interfaces only
Repeatability < 0.1 mm
Length of limit actuator
P Q
Active high or Active low
P Q
Length of limit actuator
Incremental
†
2 channels A and B in quadrature (90° phase shifted)
Reference
†
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.
Signal period
Resolution
A
B
Z
Z
Bi-directionally repeatable pulse Z,
duration equal to the resolution
Wide reference
†
E
> 15 ms
Set-up*
0
Voltage
at X
1
100%
0
Signal level
Set-up signal voltage proportional to incremental signal amplitude
* Set-up signals as shown are not present during calibration routine.
†
Inverse signals not shown for clarity
NOTE:
No limits on TD interfaces. P limit becomes E+ for options E, F, G, H.
Bi-directionally repeatable pulse Z,
duration equal to the signal period
Repeatability < 0.1 mm