48
ATOM linear encoder system
Ti interface
¹
When AGC is enabled the LED indication will be as shown but with the addition of a blue indication.
2
When stationary will be green or red.
3
Flash will effectively be invisible when incremental signal level is >70% when passing reference mark.
4
Alarm output will take the form of 3-state or line driven E− signal depending on interface conguration. Also, some congurations do not output overspeed alarm.
See the ATOM
™
miniature encoder system data sheet (Renishaw part no. L-9517-9563) for more details.
Momentary status only, while fault condition remains.
Alarm may result in axis position error, re-datum to continue.
LED diagnostics
Readhead
The readhead set-up LED consists of a tri-coloured LED which can display any combination of red, blue or green.
NOTE: See ‘Troubleshooting’ on page 49
for more information on diagnosing faults.
Signal Indication Status
Incremental (AGC off)
1
Green Normal set-up; signal level >70%, AGC off
Orange
2
Acceptable set-up; signal level 50% to 70%, AGC off
Red Poor set-up; signal may be too low for reliable operation; signal level <50%, AGC off
CAL Single-blue ashing Calibrating incremental signals
Double-blue ashing Calibrating reference mark
Reference mark Green (ash)
3
Normal phasing
Blank (ash) Acceptable phasing
Red (ash) Poor phasing; clean scale and recalibrate if required
Restore factory defaults Four blue ashes on switch on Factory defaults restored
Signal Indication Status Alarm output
4
Incremental Purple Normal set-up; signal level 110% to 135% No
Blue Optimum set-up; signal level 90% to 110% No
Green Normal set-up: signal level 70% to 90% No
Orange Acceptable set-up; signal level 50% to 70% No
Red Poor set-up; signal may be too low for reliable operation; signal level <50% No
Red / blank - ashing Poor set-up; signal level <20%; system in error Ye s
Blue / blank - ashing Overspeed; system in error Ye s
Purple / blank - ashing Over signal; system in error Ye s
Reference mark Blank ash Reference mark detected (speed <100mm / s only) No