Trouble Shooting
Below we list some of the occasional issues that can arise and some guidelines of what to
check. At no time open the DRO or encoders as this would void any warranty.
Observed Problem Guidelines
No Display or display flashes and
goes blank
● Check there is a mains supply present and the unit is switched on
● Ensure the supply is within the range of the DRO (110 -240VDC)
● Ensure the Fuse in the DRO is intact. The fuse is located above
the Mains IEC input (1A, 15W)
Position does not repeat or
Incorrect readings
● Check encoder connections
● Check alignment of the scale is within specification
● Check brackets to ensure there is no play and screws etc. are
tight.
● Swap axes over and see if the fault stays with that encoder on on
the same axis on the DRO. I.e. identify if it is an encoder or DRO
issue.
Last digits of display are unstable
This is generally caused by RF or electrical noise entering the system.
● Add the equipotential connection from the DRO to the Machine
body.
● Ensure encoder cables are not close to drive or lighting cables
that can be electrically noisy.
● Vibration in brackets can also be a cause, so check all mountings
are tight and free from play.
● Connect to a different power socket, or if connected to a machine
supply try connecting to a standard wall socket with an IEC lead
Axis is counting double/half
● Check if in (or not in) Radius or Diameter mode
● Check axis resolution setting (0.005mm or 0.010mm)
Counting Direction is wrong
● Change direction using Setup (See Quick Setup in this guide)
Missing LED segments
● Unfortunately from time to time an LED can develop a fault.
Please consult ems-i for a repair or replacement.
Tel: +44 (0) 116 279 3035
e-mail: info@ems-i.co.uk
web: www.ems-i.co.uk
EMS (International) Limited
Brookfield Works
Canal Street
Littleborough
Lancashire
OL15 0HA
England
If you experience any problems please contact ems-i and we will be glad to work with you
on resolving any issues you may have.
ems-i are committed to providing first class customer service and support.
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