Ring centreline and
readhead optical centreline
2.2
4.6
14
A-9531-0250
7
0.65
9.75
Use A-9531-0342
adhesive to affi x
reference mark
actuator
RGH20 reference mark options
Dimensions and tolerances in mm.
2. Using
A-9531-0250
1. Using
A-9559-0650
Ring centreline and
readhead optical
centreline
7.55
A-9559-0650
7.5
11.75
7.5
15
10
11.6
Nominal ring
di21.5 max
4.1
Nominal ring
diameter -18 min
M3 x 0.5 x 10 long
into any existing
tapped hole
19
10.5
3. Using
A-9541-0037
Ring centreline and
readhead optical centreline
22.1
1.1
A-9541-0037
3
3
0.2
2.3
3
6
27
8.5
10.75
M3
4. Using
A-9531-0287
2.15
0.6
4.6
18.6
22.6
A-9531-0287
M3 screw, button head
8
0.5
2.2
3
9.75
Ring centreline and
readhead optical centreline
This section is a quick-start guide to installing RGH20 and RGH20F/REF systems.
More detailed information on installing the system is contained in the following sections of the installation guide.
RGH20 direct output quick-start guide
Ensure scale, readhead optical window and mounting faces are clean and free from obstruction.
Connect readhead to receiving electronics and power-up.
Install and align the readhead to maximise the signal strength over the full axis of travel as indicated
by the LED on the readhead (green).
Move the readhead slowly (<100mm/s) past the reference mark in the direction used for the datuming operation.
If fi tted, ensure correct reference mark magnet is fi tted and positioned.
Adjust the phasing of the reference mark to give a red fl ash on the readhead LED as the readhead
passes the reference mark
The system is now ready for use.
RGH20F/REF quick-start guide
INSTALLATION
Ensure scale, readhead optical window and mounting faces are clean and free from obstruction.
If fi tted, ensure correct reference mark magnet is fi tted and positioned.
Plug the readhead cable into the REF interface. Connect the interface to the receiving electronics and power-up.
Ensure AGC is switched off – the CAL/AGC LED on the interface should be off
(if not press and hold the CALIBRATE button on the interface for >3 seconds).
Install and align the readhead to maximise the signal strength over the full axis of travel as indicated by
the interface LED (SETUP LED – green, ideally blue or purple).
Move the readhead slowly (<100mm/s) past the reference mark in the direction used for the datuming operation.
Adjust the phasing of the reference mark to give a red fl ash on the SETUP LED
on the interface as the readhead passes the reference mark.
CALIBRATION
Press and release the CALIBRATE button on the interface.
The CAL/AGC LED will fl ash slowly.
Move the readhead slowly along the scale (<100 mm/s) until the CAL/AGC LED stops fl ashing.
The system is now calibrated and ready for use.
AGC can now be switched on if required by pressing and holding the CALIBRATE button for >3 seconds.
The CAL/AGC LED will be on.