Renishaw TONiC T20 1 Series, Руководство по установке, Страница: 18 / 27

16 TONiC RESM20 angle encoder system installation guide
Readhead mounting and alignment
Mounting brackets
The bracket must have a flat mounting surface and should enable conformance to the installation tolerances,
allow adjustment to the rideheight of the readhead, and be sufficiently stiff to prevent deflection or vibration of the
readhead during operation.
Readhead set-up
Ensure that the scale, readhead optical window and mounting face are clean and free from obstructions.
NOTE: When cleaning readhead and ring apply cleaning fluid sparingly, do not soak.
To set nominal rideheight, place the Green spacer with the aperture under the optical centre of the readhead to
allow normal LED function during set-up procedure. Adjust the readhead to maximise the signal strength and
achieve a Green set-up LED on the readhead (> 70% signal) for a complete rotation. If a digital Ti/TD interface is
used, aim for a Blue LED on the interface.
NOTE: The readhead should be installed and set-up with the AGC switched off (CAL LED off).
When re-installing, factory defaults should be restored (‘Restoring factory defaults’, page 18) .
Yaw
0° ±0.4°
Pitch
0° ±1°
Roll
0° ±0.5°
Rideheight
2.1 ± 0.15 mm
Optical centreline
Green spacer
LED Indication Status
Set-up
Incremental
Green Normal set-up: signal level > 70%
Orange Acceptable set-up; signal level 50% to 70%
Red
Poor set-up; signal may be too low for reliable
operation; signal level < 50%
Reference
mark
Green (flash)* Normal phasing
Orange (flash) Acceptable phasing
Red (flash) Poor phasing; clean scale and recalibrate if required
CAL
Operating
On Automatic Gain Control – On
Off Automatic Gain Control – Off
Calibration
Single flashing Calibrating incremental signals
Double flashing Calibrating reference mark
Reset
Flashing at
power-up (< 2s)
Restore factory defaults
*
Flash will effectively be invisible when incremental signal is > 70% when passing reference mark.
Ti0004 to Ti20KD and TD4000 to TD0040 interface LED diagnostics
Signal Indication Status
Alarm
output
†
Incremental
Purple Normal setup; signal level 110% to 135% No
Blue Optimum setup; 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 -
flashing
Poor set-up; signal level < 20%; system in error Yes
Blue / blank -
flashing
Over speed; system in error Yes
Purple / blank -
flashing
Over signal; system in error Yes
Reference
mark
Blank flash Reference mark detected (speed < 100 mm/s only) No
†
Alarm output will take the form of 3-state or line driven E− signal depending on interface configuration.
Also, some configurations do not output overspeed alarm.
• Momentary status only, while fault condition remains.
• Alarm may result in axis position error, re-datum to continue.
See the product nomenclature for interface configuration in the TONiC encoder system Data sheet
(Renishaw part no. L-9517-9337). This can be downloaded from our website at www.renishaw.com/tonicdownloads
and is also available from your local representative.
T20x1 readhead LED diagnostics
Readhead set-up LED status
Green Orange Red