Newall C80 User manual

C80 Three Axis Digital Readout System
NEWALL MEASUREMENT SYSTEMS
CONTENTS
2 SPECIFICATIONS
3 CONNECTIONS
4 MOUNTING
4 Arm Mounting (Non-adjustable)
4 Arm Mounting (Adjustable)
5 Face Mounting (Adjustable)
5 Lathe Mounting (Adjustable)
6 OPERATION
6 Understanding the Displays
6 Using the Keypad
7 STANDARD FUNCTIONS
7 Setting the Datum for Each Axis
7 Using Digifind
7 Using Centerfind
8 SETUP
8 Using Setup Mode
9 Machine Type
9 Encoder
10 Radius / Diameter
10 Direction
10 Error Compensation
11 Segmented Error Compensation
12 Linear Error Compensation
13 Zero Approach
13 Axis Summing
13 Taper Display Axis
14 Add / Delete Function
14 Reset
14 Store
15 SPECIAL FUNCTIONS
15 Menu Function
16 MILL FUNCTIONS
16 Bolt Hole Circle
18 Arc Contouring
20 Line Hole
22 Polar Coordinates
23 LATHE FUNCTIONS
23 Taper
24 Tool Offsets
26 Summing
27 Vectoring
28 GENERIC FUNCTIONS
31 TROUBLESHOOTING
31 CLEANING

SPECIFICATIONS
SPECIFICATIONS C80 Three Axis Digital Readout System
Feb 2002Newall Measurement Systems Ltd2
Electrical
EMC and Low Voltage Compliance
BS EN 55022:1998 Class B
BS EN 55024:1998
Power Supply Unit (supplied)
100 - 240V (47 - 63Hz)
External switch-mode
Conforms to Low Voltage Directive
EN 60 950:1992/
A1:1993/ A2:1994/ A3:1996/ A4:1997
Physical
Height
265mm (10.43”)
Width
180mm (7.09”)
Depth (not including connectors)
50mm (1.97”)
Weight
2.9kg (6.38lb)
Environmental
Operating Temperature
0 to 45°C
Storage Temperature
-20 to 70°C
Environmental Conditions
Indoor Use, IP20 (IEC 529)
Relative Humidity
Maximum 80% for temperatures up to 31°C
decreasing linearly to 33% at 45°C
Disposal
At the end of its life, the C80 system should
be disposed of in a safe manner applicable to
electronic goods.
DO NOT BURN.
The casework is suitable for recycling. If you
have any doubt about how to dispose of
your unit, please return it to Newall and we
will provide this service for you.
Input
Three Spherosyn or Microsyn encoders.
Resolutions
Spherosyn or Microsyn 10
(menu selection)
5μm (0.0002”)
10μm (0.0005”)
20μm (0.001”)
50μm (0.002”)
Microsyn 5
(menu selection)
1μm (0.00005”)
2μm (0.0001”)
5μm (0.0002”)
10μm (0.0005”)
NOTE: NEWALL MEASUREMENT SYSTEMS LTD
RESERVES THE RIGHT TO CHANGE SPECIFICATIONS WITHOUT NOTICE.
NOTES

C80 Three Axis Digital Readout System
CONNECTIONS
Feb 2002 Newall Measurement Systems Ltd 3
NOTES
DO NOT CONNECT
THIS UNIT DIRECTLY
TO THE MAINS SUPPLY.
If you have a Newall
encoder which is not
fitted with D-type
connector, an adaptor
cable is available.
Part No. 307-60940
Contact your supplier for
details.
2.5mm
Power Inlet
15 – 24Vdc ±10%
@0.25A
Power
Indicator
Lamp
Encoder Inputs
9-way ‘D’
(All plugs should be
screwed finger tight)
Equipotential
Terminal
(Should be
grounded to
machine)
Cable Anchor
(The power cable
should be secured)
•The C80 is suitable for use only with Newall Spherosyn and Microsyn analogue encoders.
•Ensure that all cables are secured to prevent the connectors from dropping into hazardous
positions when unplugged, for example the floor or coolant tray.
•Ensure that all cables are routed to prevent them from being caught on moving parts.
•Turn off the power before connecting the encoder, by disconnecting the power supply connector.
•Ensure that the C80 is grounded to the machine before turning on the machine supply.
CONNECTIONS

Arm Mounting (Non-adjustable)
Arm Mounting (Adjustable)
MOUNTING
MOUNTING, Arm mounting C80 Three Axis Digital Readout System
NOTES
Feb 2002Newall Measurement Systems Ltd4
•The C80 can be mounted in a variety of ways, depending on the mounting assemblies purchased
with the unit:
M10 stud & fixings,
supplied as standard
Arm mount adjustable pivot assembly
Part no. 600-80290
Mounting arm assembly
Part no. 294-35670
Mounting arm assembly
Part no. 294-35670

C80 Three Axis Digital Readout System
Face Mounting (Adjustable)
Lathe Mounting (Adjustable)
MOUNTING, Face Mounting, Lathe mounting
NOTES
Feb 2002 Newall Measurement Systems Ltd 5
Lathe mount adjustable pivot assembly
Part no. 600-80280
Lathe carriage assembly
Part no. 600-80280
Lathe headstock mount assembly
Part no. 600-80300
Face mount adjustable pivot assembly
Part no. 600-80270

Understanding the Displays
Using the Keypad
OPERATION
OPERATION, Understanding the Displays, Using the Keypad C80 Three Axis Digital Readout System
NOTES
During Setup and
Special Functions, the
displays may show
information other than
that described on this
page.
See the sections on
Setup and Special
Functions, later in this
guide.
For more information
about the use of the
Navigation Keys and the
Function Keys, see the
sections on Setup and
Special Functions, later
in this guide.
During Setup and
Special Functions, the
keys may be used for
functions other than
those described on this
page.
See the sections on
Setup and Special
Functions, later in this
guide.
At the beginning of each
working session, set the
datum in Absolute
Mode, then switch the
C80 to Incremental
Mode.
By using the C80 in this
way, you will be able to
return the machine to its
absolute datum at any
time, simply by switching
back to Absolute Mode.
Feb 2002Newall Measurement Systems Ltd6
•The three Axis displays normally show the positions of the X, Y and Z axes.
•The three Axis Label displays normally show X, Y and Z, (in Lathe Mode X, Z and Z’).
•While any axis is moving, the Function display shows the Feedrate of the fastest moving axis, and
the feed indicator next to the display will illuminate.
Feedrate is displayed in mm/sec or inches/min, to a resolution on 0.1.
•The lathe and mill indicators will be illuminated depending on whether the lathe or mill functions
or both, are available. .
Function Display
Navigation
Keys
Numeric Keys
Function
Keys
Axis
Select
Keys
Axis
Label
Displays
Axis Labels
in Lathe
Mode
Axis
Displays
In normal operation, the keys are used as follows:
•Press to toggle the displays between inches and millimetres.
•Press to toggle the C80 between absolute mode and incremental mode.
Absolute Mode
• In this mode, the C80 will display the positions of the three axes relative to a fixed datum.
Incremental Mode
• In this mode, the C80 can be used to display each position relative to the last position. This is also
known as point-to-point use.
Sleep Mode
•Press to temporarily turn off the displays and the keypad.
While the unit is in sleep mode, all settings are preserved, but the positions of the three axes are
updated. If any of the axes are moved while in Sleep Mode, the centre display will show
, and if any of the keys are touched, the centre display will show .

C80 Three Axis Digital Readout System
Using Centerfind
Using Digifind
Setting the Datum for Each Axis
STANDARD FUNCTIONS
STANDARD FUNCTIONS, Setting the Datum, Digifind, Centerfind
NOTES
Using Zero redefines the
datum, so it will not be
possible to restore the
old datum.
Using Preset, Recall or
Centerfind will change
the datum - but in
absolute mode, Digifind
can still be used to return
to the old datum.
Do not move the
machine when the C80’s
power is off.
When the power is
switched back on again,
the C80 uses Digifind
automatically to re-
establish the datum for
each axis.
Digifind works only in
Absolute mode.
Set the C80 to
incremental before using
Centerfind.
By doing this, you will be
able to return the
machine to its absolute
datum afterwards, simply
by switching back to
Absolute Mode.
Feb 2002 Newall Measurement Systems Ltd 7
Zero
•To zero one display at the current position:
Press the Select Key for the axis to be zeroed. All readings will now be relative to this new zero
point.
Preset
•To preset one display to a known fixed value:
Press , then the Select Key for the axis to be preset, then enter the value.
For Example: Press to enter the value . All
readings will now be relative to this new value.
•If you make a mistake while entering a number, pressing will clear the entry one character at a
time.
Recall
•To quickly recall the last preset value for an axis:
Press , then the Select Key for the axis to be preset. All readings will now be relative to this
new value.
In the event that a datum is lost, either due to movement following a power failure, or after a fixed point
has been entered by mistake, it can easily be re-established, using Digifind.
In order to use Digifind, the absolute datum for each axis should be marked permanently on the
machine.
•Set the axis close to the marked datum - to within:
6.3mm (0.25”) for a Spherosyn encoder or
2.5mm (0.1”) for a Microsyn encoder.
•Switch the C80 to Absolute mode.
•Press , then the Select Key for the axis to be restored. The display will update to show the
exact distance from the datum.
Centerfind works by halving the distance displayed on the selected axis. It works in either Absolute or
Incremental Mode.
For Example: to find the center of a workpiece that is 100mm wide:
•Set the tool to one edge of the workpiece, and press the Select Key for the axis to be centered.
The display shows .
•Set the tool to the other edge of the workpiece. The display shows .
•Press . The display shows .
•Move the tool until the display shows . This is the center of the workpiece.

SETUP
Using Setup Mode
SETUP, Using Setup Mode C80 Three Axis Digital Readout System
NOTES
Normally, Setup needs to
be done only once, and it
is possible that the
factory default settings
are suitable for your
needs without change.
1
Not all options will be
present, depending on
the setting of other
options.
For example, the Zero
Approach Limit option
will not be present if
Zero Approach is turned
off.
2
The Add Function and
Delete Function options
allow you to download
programmable functions
from a PC, connected to
the C80 via a serial lead
connected to axis 1. This
process is covered in a
separate guide, which
can be obtained from
Newall.
Feb 2002Newall Measurement Systems Ltd8
•To enter Setup Mode, first exit from any Special Function that is running, then press .
The centre display shows .
•Press or to cycle up and down the list of options.
The options are listed below, and each is described in detail on the following pages.
Option Default Display
Machine Type Generic
Encoder Type all axes: Spherosyn
Encoder Resolution all axes: 0.005mm
Radius / Diameter all axes: Radius
Direction all axes: 1
Error Compensation all axes: Off
Linear Compensation see note 1
Segmented Compensation see note 1
Axis Summing X and Z’ axes
Zero Approach On / Off all axes: Off
Zero Approach Limit see note 1
Taper Display Axis X axis
Add Function see note 2
Delete Function see note 2
Reset
Store
•When you have finished setting all the options, select .
Press to store any changes made.
The middle display shows: for a few seconds, as your settings are stored.
The C80 exits from Setup Mode.
•Alternatively, pressing at any time will exit from Setup Mode and abandon any changes.

C80 Three Axis Digital Readout System
Encoder
Machine Type
SETUP, Machine Type, Encoder
NOTES
The Encoder settings
must match the actual
encoder in use, or the
C80 will not display
correctly.
Feb 2002 Newall Measurement Systems Ltd 9
This setting allows you to choose whether the special functions for Mill or Lathe are available.
There are three possible settings:
Generic Mode all functions available
Mill Mode mill functions only
Lathe Mode lathe functions only
•Press the Select Key next to the to cycle between the three settings.
Encoder Type
There are three possible settings for each axis:
Spherosyn
Microsyn 10
Microsyn 5
•Press the Select Key next to the , or to cycle between the three settings for each axis.
Encoder Resolution
The Resolution settings available for each axis will depend on the encoder, and also on the setting.
Display Spherosyn Microsyn 10 Microsyn 5
mm in
1μm0.001 0.00005 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2μm0.002 0.0001 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5μm0.005 0.0002 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
10μm0.01 0.0005 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
20μm0.02 0.001 . . . . . . . . . . . . . . . . . . . . . . . . .
50μm0.05 0.002 . . . . . . . . . . . . . . . . . . . . . . . . .
•Press the Select Key next to the , or to cycle between the four available settings for
each axis.

Error Compensation
Direction
Radius / Diameter
SETUP, Radius / Diameter, Direction, Error Compensation C80 Three Axis Digital Readout System
NOTES
The Diameter setting is
useful for lathes, and
other turning
applications, to display
diameter, rather than
radius.
The Direction setting is
quite arbitrary. Set it to
whichever makes most
sense to the job.
If Error Compensation is
applied, it is important
that is absolutely correct.
If it is not correct, errors
could be increased rather
than reduced.
After setting up the Error
Compensation, it is
advisable to check its
effect in normal
operation.
Segmented
Compensation need not
be over the entire scale
length.
It can be applied just to a
length of high
importance, or it can be
as small as one segment.
Feb 2002Newall Measurement Systems Ltd10
Selecting the Diameter setting causes the C80 to display double the actual movement on any axis.
There are two possible settings for each axis:
Radius
Diameter
•Press the Select Key next to the , or to cycle between the two settings for each axis.
The Direction setting allows you to match the C80 to the actual direction of travel of any axis.
There are two possible settings for each axis:
•Press the Select Key next to the , or to cycle between the two settings for each axis.
Errors can result from a number of sources, including installation and machine wear. Where the degree
of error increases linearly along the length of travel of the encoder, Linear Error Compensation should be
applied. However, where the errors are local to an area of travel, the Segmented Error Compensation
should be applied.
There are three possible settings for each axis:
Off
Segmented compensation
Linear compensation
•Press the Select Key next to the , or to cycle between the three settings for each axis.
If one or more axes are set to Segmented Compensation, or Linear Compensation, then the next setup
option will be to configure the compensation for each of those axes.
•Press .
The middle display changes to .
Segmented Error Compensation
In this mode, the scale travel for each axis can be broken down into as many as 99 user-defined
segments, with each segment having its own correction factor. The correction factors are calculated by
the C80, by comparison against known, user-supplied standards.
•When power is applied, the display for any axis that is set to use Segmented Compensation
shows .
•If the machine has not been moved since the power was turned off, simply press , and the C80
will restore the last positions recorded.
•Alternatively, set each axis close to the Reference Point - to within:
6.3mm (0.25”) for a Spherosyn encoder or
2.5mm (0.1”) for a Microsyn encoder,
and press the Select Key next to the , or . The C80 will re-establish alignment with the
correction parameters.
Linear Error Compensation
In this mode, a single constant correction factor for each axis can be applied to all displayed
measurements. The correction factor is calculated by the user, and specified in parts per million (ppm).
Values between -9999 and +9999 are allowed.
See pages 11 and 12 for details
on using Linear and Segmented
Error Compensation

C80 Three Axis Digital Readout System
Segmented Error Compensation
SETUP, Segmented Error Compensation
NOTES
Up to 99 segments can
be defined.
To take advantage of
Segmented Error
Compensation, you will
need access to a high
accuracy standard, such
as a laser measuring
system.
Error Compensation
initially defaults to off,
with no points set.
If Error Compensation is
set to Off after
Correction Points have
been set, the data is
retained, but not applied.
When Segmented Error
Compensation is set to
On again, the data will
be re-applied.
This procedure must be
carried out in strict
sequence, and in full, to
be valid. There must be
no reversals in direction.
Pressing Select Key
at steps 1, 2 or 3, will
display the current
uncorrected position
relative to the Starting
Point.
Do not worry about the
direction of the standard
measurement. eg. 678.9
and -678.9 are treated
the same.
Pressing will clear
an entry one character at
a time.
After an entry has been
completed by pressing
, pressing
will take you back one
step at a time.
Feb 2002 Newall Measurement Systems Ltd 11
If one or more axes are set to Segmented Compensation, then the following procedure should be
followed to configure the compensation for each of those axes.
Identification of Correction Parameters
The scale travel is broken down into a number of user-defined segments, each with its own correction
factor, measured against a high-accuracy standard. The following parameters need to be identified:
error
travel
Starting Point - zero
Correction Points
Reference Point
0
1
2
3
4
5
6
Each Correction Point is measured with respect to the Starting Point - zero - which is usually set close
to one end of the scale. The Reference Point can be set anywhere along the scale, and does not need
to coincide with either the absolute datum or any of the correction points. However, it may be convenient
to make the absolute datum and the reference point the same.
Setting the Correction Points
As you follow the steps below, it is essential to take the following precaution:
Always approach the Starting Point, Correction Points and Reference Point from the same
direction. If you do not, then the size of the tool or probe will render the measurement inaccurate.
•Set one or more axes to Segmented Compensation as described on page 10.
The display should show, .
•Press the select key next to the , or to enter the setup procedure for each axis to be
configured.
The display changes to .
1Set the machine to the point you have chosen to be Starting Point, and zero the high-accuracy
standard at this point. Press .
2The display changes to .
Set the machine to the point you have chosen to be Correction Point 1. Press .
3The display changes to .
Enter the distance from the Starting Point, as measured by the standard.
For Example: Press to enter a Correction Point of 678.9.
The C80 will calculate and display the correction factor for this point.
•Press to go to the next point.
Repeat steps 2and 3for each Correction Point.
When all correction points have been entered, press .
4The display changes to .
Set the machine to the point you have chosen as the Reference Point. Press .
5The display returns to .
If required, press the Select Key next to , or to enter the setup procedure for another
axis.

Bolt Hole Circle
MILL FUNCTIONS
MILL FUNCTIONS, Bolt Hole Circle C80 Three Axis Digital Readout System
NOTES
This function is also
known as Pitch Circle
Diameter.
If you make a mistake
while entering a number,
pressing will clear
the entry one character
at a time.
After an entry has been
completed by pressing
, pressing the
Select Keys and
will take you
backwards and forwards
one step at a time.
To turn the function off,
finish making any entry,
then press the function
key again
Feb 2002Newall Measurement Systems Ltd16
This function will calculate the locations of the holes, given the following parameters:
1 Plane (X,Y X,Z or Y, Z )
2 Circle Center location
3 Circle Diameter
4 Number of Holes (up to 99)
5 Starting Angle (measured anti-clockwise from 3 o’clock)
Example
To Set the Function Parameters:
•Press or to turn the function on.
•The function display shows , and the axis displays show in which Plane the holes are to be
machined.
Press or to cycle between the three settings X,Y X,Z or Y, Z .
Press to move to the next step.
•The function display shows , and the axis displays show the coordinates of the Circle Center.
Press the Select Key next to the , or , to edit each value as required.
For Example: Press .
Press to move to the next step.
continued
Datum
99.7mm
125.25mm
150mm
Diameter
Circle
Center
18°
Starting Angle
Starting Hole
5 Holes
Y axis
X axis
The Functions described here are available when the C80 is in Mill Mode, and also when in Generic
Mode.

C80 Three Axis Digital Readout SystemMILL FUNCTIONS, Bolt Hole Circle
NOTES
The axis that is not
involved in the pitch
circle diameter function
will read as normal.
Feb 2002 Newall Measurement Systems Ltd 17
Bolt Hole Circle continued
•The function display shows , and the top axis display shows the Circle Diameter.
Enter a new value if required.
For Example: Press .
Press to move to the next step.
•The function display shows , and the top display shows the Number of Holes.
Enter a new value if required.
For Example: Press .
Press to move to the next step.
•The function display shows , and the top display shows the Starting Angle.
Enter a new value if required.
For Example: Press .
Press to finish setting the parameters.
•The function display shows .
To Machine the Holes:
The two axis displays for the selected plane now show the distance to the first hole.
•To position the tool ready for machining the hole, move the axes until both displays read zero.
The function display shows the number of the hole to be machined.
•Press the Navigation Keys or to move between the holes,
or enter the hole number.
For Example: Press to move directly to hole 4.
•When all holes have been machined, press or to turn the function off.

Axis Summing
LATHE FUNCTIONS, Summing C80 Three Axis Digital Readout System
NOTES
The conventional way to
set up a lathe is:
XAxis – cross travel
ZAxis – longditudinal
travel
Z’ Axis – compound
travel.
If the Machine Type is
set to Generic, then the
axes will be labelled:
Axis 1 – X
Axis 2 – Y
Axis 3 – Z
Feb 2002Newall Measurement Systems Ltd26
This function allows the movement of the Z’ axis to be added to the movement of either the X axis or
the Z axis.
The Summing Function is useful when the compound is set to align with either of those two axes. If the
compound is set at an angle, see the next section on the Vectoring Function.
To Set the Function Parameters:
The selection of which axes are to be added together is carried out in Setup Mode.
•To enter Setup Mode, first exit from any Special Function that is running, then press .
The centre display shows .
•Press or to choose .
Press or to choose which axes are to be added: X+Z’ or Z+Z’.
•If necessary, change the Direction of the Z’ axis, so that the axes do add, rather than subtract. (See
the section on Setup, Direction, earlier in this guide.)
•Press or to choose , then press to store the change.
To Use the Function:
•Press or to turn the function on.
•The X display shows the X axis as normal.
The Z display shows the Z axis as normal.
The Z’ display shows the Sum of the two selected axes.
Any of the axes can be zeroed or preset in the usual way. The Sum display will be altered to take
account of the new value.
•Press or to turn the function off.
X
Combined Movement
Z + Z’
Combined Movement
X + Z’
X
ZZ
Z’
Z’

C80 Three Axis Digital Readout System
Vectoring
LATHE FUNCTIONS, Vectoring
NOTES
The conventional way to
set up a lathe is:
XAxis – cross travel
ZAxis – longditudinal
travel
Z’ Axis – compound
travel.
If the Machine Type is
set to Generic, then the
axes will be labelled:
Axis 1 – X
Axis 2 – Y
Axis 3 – Z
If you make a mistake
while entering a number,
pressing will clear
the entry one character
at a time.
To turn the function off,
finish making any entry,
then press the function
key again
Feb 2002 Newall Measurement Systems Ltd 27
This function allows the movement of the X and Z axes to be combined with the angle of the compound.
This function is available only on 3-axis units.
The Vectoring Function is useful when the compound is set at an angle. If the compound is set to align
with either the X or the Z axes, see the previous section on the Summing Function.
To Set the Function Parameters:
•Press or to turn the function on.
•The top display shows , and the middle display shows the Vectoring Angle.
Enter a new value if required.
For Example: Press , or just press to accept keep the existing setting.
To Use the Function:
•The X display shows the combined X axis movement.
The Z display shows the combined Z axis movement.
The Z’ display shows the Z’ axis as normal.
Any of the axes can be zeroed or preset in the usual way. The Vectoring displays will be altered to
take account of the new value.
•Press or to turn the function off.
Combined X movement = X + Z’(Sin α)
Combined Z movement = Z + Z’(Cos α)
Xαα
Zvectoring
angle
Z’

C80 Three Axis Digital Readout System
CLEANING
TROUBLESHOOTING
The display is blank.
The display works, but resets
from time to time without any
keys being pressed.
The display works, but gives
erratic readings, the last digit
jitters or the measurements
jump to new figures
unexpectedly.
or
appears in the display.
The unit will not respond to any
key presses.
Readings are incorrect
•The C80 may be in Sleep Mode. Press .
•Check that the power supply is correctly connected to a
working mains outlet.
•Check that the power supply cables are not damaged.
•Check that the power supply voltage is 15-24Vdc ±10%.
•Disconnect all encoder cables. A defective encoder can
prevent the C80 from working.
•This suggests either that the supply voltage is too low, or
that the power supply or mains supply has an intermittent
fault.
•Check that the power supply voltage is 15-24Vdc ±10%.
•Check that all connections are sound.
•This suggests that there may be a poor earth (ground)
connection.
•Both the C80, and the machine on which it is installed,
must have proper earth (ground) connections. (see page 3)
•There may be a problem with the encoder (see below).
•This indicates that the unit is not receiving a proper signal
from the encoder.
•Check that the encoder connections are sound.
•Check that there is no damage to the connectors or to the
encoder.
•Switch the C80 off and back on again.
•Swap the encoder to another axis to confirm whether the
encoder or the C80 is at fault (see tip).
•Disconnect the C80 from its power supply, wait 15 seconds
then reconnect.
•Check Encoder Type to ensure correct selection.
•Check the Radius / Diameter setting. The Diameter setting
will cause the axis to read double.
•Check Error Compensation factors.
•If using Segmented Error Compensation, verify the datum
position.
•Swap the encoder to another axis to confirm whether the
encoder or the C80 is at fault (see tip).
•Check that there is no damage to the encoder or its cable.
•Check that the encoder is fixed firmly and aligned correctly,
as described in the encoder manual.
•Check that there is no binding on the scale. With the scale
brackets slightly loosened, you should be able to slide the
scale back and forth with minimal resistance.
•If you have a Spherosyn scale, check that the scale is not
bent, by removing it and rolling it on a flat surface.
SolutionsSymptom
NOTES
Providing the machine
has not been moved
more than:
6.3mm (0.25”) for a
Spherosyn encoder or
2.5mm (0.1”) for a
Microsyn encoder
the datum position will
not be lost by switching
the power off and back
on again.
When swapping
encoders to trace a fault:
1
Check that two axes are
set to the correct
encoder types.
2
Move the encoder from
the malfunctionning axis
to a working axis.
If the fault stays with the
same encoder, then the
encoder is at fault. If the
fault stays with the same
axis, the C80 is at fault.
FOLLOW THESE
INSTRUCTIONS
CAREFULLY TO AVOID
DAMAGE TO THE C80.
Feb 2002 Newall Measurement Systems Ltd 31
TROUBLESHOOTING, CLEANING
If the solutions suggested above do not solve your problem, contact Newall for further instruction.
•Disconnect the power supply from the C80 before cleaning.
•Do not use corrosive or abrasive cleaning materials.
•Do not use compressed air.
•Apply a small amount of mild soap to a lint-free cloth. Use this to wipe over the case and keypad,
taking care not to allow fluid into the connectors.