SINO SDS 2-3VA User manual

LCD DIGITAL DISPLAY
SDS 2-3VA
OPERATION MANUAL

I
Safety Matters:
Symbol Description
Warning Prompt
Symbols and signs are given for warning in the instructions.
Such prompts are introduced by signal texts which describe the criticality
explicitly.
Be sure to follow such warnings and take actions carefully, so as to avoid
accidents and human damage and property loss.
Caution:
To prevent electric shock for fire, this machine must not be affected with
damp or subjected to direct spurting of the cooling liquid.
Danger!
The prompt of a dangerous case leading to death or serious injury directly, which
must be avoided.
Warning!
The prompt of a dangerous case leading to death or serious injury, which must be
avoided.
Caution!
The prompt of a dangerous case possibly leading to death or serious injury, which
must be avoided.
Dear user:
Thank you for purchasing the LCD digital display model
SDS 2-3VA, It is a precise measuring product, with the main
purpose of providing detecting and locating functions for test
instruction or during the processing of various manual machine
tools of different types.
Note: When using the product, the user needs to handle
with care, otherwise, its precision will be affected. Besides, read
the following safety knowledge and notes so as to ensure that the
new display device is used safely.

II
Warning:
To avoid electric shock, do not open the enclosure by yourself. The
machine has no components that can be repaired by users. For service,
Please contact professional and technical personnel for inspection and
maintenance.
Attention:
If the display is found to give out smoke or undesirable odor, immediately
unplug the power cord. Continuing to use this product at this time will lead
to fire or electric shock. Please contact its agent. Do not try to repair the
display by yourself.
The display is connected with an optical electronic rule to constitute a
precise test device. Once the wiring between electronic rule and display is
broken or has its surface damaged, the test data would be wrong. Users
must be especially careful.
Do not try to repair of remodel the display unit, which would otherwise
leads to failure, malfunction or injury. If an abnormality occurs, contact
its agent.
If the optical electronic ruler used by the display unit is indeed damaged,
do not use an electronic rule of another brand for connection, because the
products from different companies have different features, indexes and
wirings. Without the guide of professionals, products from different
companies are not allowed to be connected, which otherwise would lead to
display failure.
Note: Our products will be updated without any further notice.
This displacement sensor conforms to European low-voltage directive
2006/9SEC for electric equipment safety and electromagnetic
compatibility directive 2004/108/EC.

III
Table of Contents
Chapter I Monitor are briefly introduced......................................................1
1.1 Display Key Description.................................................................. 2
1.2 Display Interface Description...........................................................3
Chapter II System Parameter Setting............................................................ 4
2.1 Enter/Quit System Parameter Setting...............................................4
2.2 Setting the Number Axis Type.........................................................4
2.3 Setting the Number of Encoder Lines..............................................5
2.4 Setting the Grating Ruler Resolution............................................... 5
2.5 Setting the Counting Direction.........................................................6
2.6 Setting the Compensation Mode...................................................... 7
2.7 Setting the Number of Display Axes................................................7
2.8 Setting the Display Type (Meter Type)............................................8
2.9 Setting the Combined Axis Display.................................................9
2.10 Setting the Display of Dithering Elimination.................................9
2.11 Setting the Angle Display Type................................................... 10
2.12 Setting the Angle Display Range................................................. 11
2.13 Setting the Number Setting Direction for the ZER Coordinate
System......................................................................................... 11
Chapter III Basic Operation Instructions.................................................... 13
3.1 Startup.............................................................................................13
3.2 Zeroing............................................................................................13
3.3 Preset Value for an Axis.................................................................13
3.4 Metric/British System Switching................................................... 14
3.5 Automatic Middling....................................................................... 15
3.6 Absolute/Relative/200 Group User Coordinate Systems...............16
3.7 Radius/Diameter Conversion (R/D)...............................................17
3.8 User Parameter Setting...................................................................17
3.8.1 Setting the LCD Brightness....................................................17
3.8.2 Setting the Display Language.................................................17
3.8.3Setting the Buzzer Prompt.......................................................18
Chapter IV Auxiliary Zero Position Function of the 200 Group User
Coordinate System.......................................................................................21
4.1 Entering the ZER Zero Position Directly.......................................21

IV
4.2 Zero Clearing in Place....................................................................22
Chapter V Special Functions......................................................................24
5.1 Holes along a line........................................................................... 24
5.2 Making holes along a circle............................................................26
5.3 Oblique plane (slope) processing................................................... 31
5.4 Simple arc processing.....................................................................34
5.5 The Function of measure for taper................................................. 39
5.6 200 tool storeroom.........................................................................33
Chapter VI Calculator Function................................................................. 42
6.1 Interface introduction.................................................................... 42
6.2 Calculation examples.....................................................................43
6.3 Calculation result transfer.............................................................. 43
Chapter VII Error Compensation Function.................................................42
7.1 Linear error compensation..............................................................42
7.2 Non-linear error compensation......................................................44
Chapter VIII Trouble Shooting................................................................... 46

1

2
1.1 Display Key Description
Key symbol
Function Description
Number axis zeroing key
Single axis setting key
Number keys
Decimal point enter key
Symbol enter key
Metric/imperial system switching key
Operation confirmation key
Calculation function key (for entering or quiting the
calculator state)
Calculator zeroing key
Circle holing key (for equally divided hole pocessing on an
arc)
Oblique line holing key (for equally divided hole pocessing
on an oblique line)
Arc processing key (for processing the flat surface of a
workpiece into an arc surface)
Oblique processing key (for processing the surface of a
workpiece into an oblique surface)
Up, down, left and right (direction) selection key
Taper measurement key (lathe meter)
Tool magazine function key (lathe meter)
Alternate key
Function multiplex key

3
1.2 Display Interface Description
No.
Interface type
Interface diagram
Pin
Signal
1
9 core TTL interface
1/3/5
Null
2
0V
4
Wrong signal
6
A
7
+5 V
8
B
9
R
2
9 core EIA-422-A
signal interface
1
-A
2
0V
3
-B
4
Wrong signal
5
-R
6
A
7
+5 V
8
B
9
R
3
EDM signal interface
1/4/5/
7/8/9
Null
2
Common
3
Normally off
6
Normally off
4
6 core signal interface
1
0V
2
A
3
B
4
R
5
+5 V
6
PE ground
wire
5
7 core signal interface
1
0V
2
Null
3
A
4
B
5
+5 V
6
R
7
PE ground
wire

4
Chapter II System Parameter Setting
Based on grating rule installation and actual needs, set various
parameters to achieve the goal of normal operation.
(Figure 2.1)
2.1 Enter/Quit System Parameter Setting
In the time frame of startup screen, Press the key to enter the
interface of system parameter setting, as shown in Figure 2.1.
After parameter setting, press the “Save” function key to save system
parameter setting and the “Exit” key to quit the interface of system
parameter setting.
2.2 Setting the Number Axis Type
Each axis of the display can be connected with a grating rule to show
the distance or a rotary encoder to show the angle.
Factory default: A grating ruler is mounted.
For example: Set axis Z to mount a rotary encoder.
1) On the interface of system
parameter setting,
Press the or key until
the cursor moves to
the type option field for axis Z.

5
2) Press the “+” or “-“ function key to switch the type of axis Z to the
angle mode.
3) Press the “Save” function key to save the modification.
4) Press the “Exit” function key to quit the interface of system parameter
setting.
2.3 Setting the Number of Encoder Lines
The display supports the rotary encoder with any number of lines,
which is set based on actual situation. After rotary encoder installation, if the
number of lines are different from the current value, the number of lines for
the encoder must be set in the display, otherwise the reading would be
incorrect. This parameter must be set by the installation personnel and must
not be modified by the user.
Factory default: 9,000 lines
For example: The resolution on axis Z
is set to 180,000 lines.
1) On the interface of system
parameter setting,
Press the or key until the
cursor moves to
To the resolution option field for axis Z.
2) Press number keys to enter 180,000 for the resolution on axis Z.
Note: The value of number of lines can be entered only when the type
is switched to angle.
3) Press the “Save” function key to save the modification.
4) Press the “Exit” function key to quit the interface of system parameter
setting.
5)
2.4 Setting the Grating Ruler Resolution
The display can be connected with a grating ruler with resolution 0.05
μm, 0.1 μm, 0.2 μm, 0.5 μm, 1 μm, 2 μm, 5 μm, 10 μm, 20 μm or 50 μm, 10
different types in all. After grating rule installation, if the resolution is
different from current value, the resolution of the grating ruler must be set in
the display, otherwise the reading would be incorrect.

6
Note: This parameter must be set by the installation personnel and
must not be modified by the user.
Factory default: 5 μm
For example, the resolution on axis X
is 1 μm.
1) On the interface of system
parameter setting,
Press the or key until the
cursor moves to
to the resolution option field for axis X.
2) Press the “+” or “-” function key to switch the resolution on axis X to
1 μm.
3) Press the “Save” function key to save the modification.
4) Press the “Exit” function key to quit the interface of system parameter
setting.
2.5 Setting the Counting Direction
After the user mounts the grating ruler or encoder, actual counting
direction may be just opposite to what the user expects. This user need can
be met in system parameter setting.
The counting direction of the grating rule is set by the installation
personnel and must not be modified by the user.
Factory default: 0
For example: The counting direction on
axis X is set to 1.
1) On the interface of system
parameter setting,
Press the or key until
the cursor moves to
to the direction option field for axis X.
2) Press the ”+” or ”-” function key to switch the direction of axis X to
1.
3) Press the “Save” function key to save the modification.
4) Press the “Exit” function key to quit the interface of system parameter
setting.

7
2.6 Setting the Compensation Mode
Term
Linear and non-linear error:
There is an error between the measured value and standard value of the
grating rule. If the two measurement curves are in an identical shape within
the grating ruler’s range of travel but not in coincidence, this is called a
linear error. If the two measurement curves are in different shapes, this is
called a non-linear error.
Linear correction: to compensate for the linear error so that the displayed
value is equal to the standard value.
Note: The linear error correction value is set by the installation
personnel, and must not be modified by the user at will, which otherwise
would affect measurement accuracy.
Error correction has two setting types: 1. Linear compensation; 2. non-linear
compensation.
For example: Set the compensation mode
on axis X to non-linear error correction.
Operation steps:
1) On the interface of system
parameter setting,
Press the or key until
the cursor moves to
to the option field for compensation mode on axis X.
2) Press the “+” or “-” function key to switch the compensation mode
on axis X to non-linear compensation.
3) Press the “Save” function key to save the modification.
4) Press the “Exit” function key to quit the interface of system parameter
setting.
2.7 Setting the Number of Display Axes
The display is capable of setting the number of display axes on the
coordinate interface based on user needs, from 2 to 3.
Factory default: 2
For example: Set the number of axes to 3.

8
1) On the interface of system
parameter setting,
Press the or key until
the cursor moves to
to the option field for number
of axes.
2) Press the “+” or “-” function key to switch the number of axes to 3.
3) Press the “Save” function key to save the modification.
4) Press the “Exit” function key to quit the interface of system parameter
setting.
2.8 Setting the Display Type (Meter Type)
The display is capable of switching the meter type based on the type of
used machine tool. After meter type switching, the corresponding
processing function of the display changes accordingly.
Factory default: milling machine
For example: Set the meter type
to lathe
1) On the interface of system
parameter setting,
Press the or key
until the cursor moves to
to the option field for meter type.
2) Press the “+” or “-” function key to switch the meter type to lathe.
3) Press the “Save” function key to save the modification.
4) Press the “Exit” function key to quit the interface of system parameter
setting.

9
2.9 Setting the Combined Axis Display
During machine tool design, the case that two grating rulers are
installed in the same axis direction may occur, requiring to display the
positions of actually processed contact points, and the counting values of
two grating rulers need to be displayed in combination. The combination
setting can meet this requirement.
The combination has the following modes:
1) No combination: The value on each axis is displayed separately.
2) Y=Y+Z: The displayed value on axis Y is equal to the value on axis
Y and the value on axis Z.
Factory default: no combination
For example: Set the combination
mode to Y=Y+Z
1) On the interface of system
parameter setting,
Press the or key until the cursor moves to
to the option field of combination.
2) Press the “+” or “-” function key to switch the combination mode to
Y=Y+Z.
3) Press the “Save” function key to save the modification.
4) Press the “Exit” function key to quit the interface of system parameter
setting.
2.10 Setting the Display of Dithering Elimination
During grinding, the vibration of the grinder makes what’s on the display
change repeatedly and quickly, discomforting the operator visually. The display
has a dithering elimination function which prevents what’s on the display from
changing quickly and causing visual confusion when the grinder vibrates.
Factory default: 0 (disabled)
For example: Set dithering elimination to 1 (enabled).
1) On the interface of system parameter setting,

10
Press the or key until
the cursor moves to
to the option field of dithering
elimination.
2) Press the “+” or “-” function
key to switch the dithering elimination
mode to 1.
3) Press the “Save” function key to save the modification.
4) Press the “Exit” function key to quit the interface of system parameter
setting.
2.11 Setting the Angle Display Type
The angle display mode has two types: degree and degree, minute and
second. After the angle type is switched, the display mode of each angle axis
is based on this parameter.
Factory default: decimal system
For example: Set the angle type
to degree, minute and second.
1) On the interface of system
parameter setting,
Press the or key
until the cursor moves to
to the option field of angle type.
2) Press the “+” or “-” function key to switch the angle type to degree,
minute and second.
3) Press the “Save” function key to save the modification.
4) Press the “Exit” function key to quit the interface of system parameter
setting.

11
2.12 Setting the Angle Display Range
In order for the operator to meet the rotation axis’ display requirement,
a parameter of angle display range is set hereby specially, which can be
modified by the operator as required.
Angle range:
1) 0 – 360: The angle display value is between 0 – 360 degrees.
2) -360 – 360: The angle display value is between -360 – 360 degrees.
3) -180 – 180: The angle display value is between -180 – 180 degrees.
Factory default: 0～360
For example: Set the angle range
to -180 – 180.
1) On the interface of system
parameter setting,
Press the or key until
the cursor moves to
to the option field of angle range.
2) Press the “+” or “-” function key to switch the angle range to -180 –
180.
3) Press the “Save” function key to save the modification.
4) Press the “Exit” function key to quit the interface of system parameter
setting.
2.13 Setting the Number Setting Direction for the
ZER Coordinate System
In the ZER coordinate system, there are two two number setting modes:
Mode 0: normal number setting mode, in which the displayed value is
equal to the entered value.
Mode 1: special number setting mode, in which the displayed value is
equal to the opposite number of the entered number. This mode
is suitable for directly following the drawing to mark the
dimension presetting coordinate in the ZER coordinate system.
Factory default: 0
For example: Set the ZERDIR on axis X to 1.

12
1) On the interface of system
parameter setting,
Press the or key until
the cursor moves to
to option field of ZERDIR on
axis X.
2) Press the “+” or “-” function key to switch ZERDIR to 1.
3) Press the “Save” function key to save the modification.
4) Press the “Exit” function key to quit the interface of system parameter
setting.
Note: The number setting direction of the ZER coordinate system
must be in accordance with the type of each axis. Therefore, you need to
only modify the parameter of one axis, and the parameters of other
axes change accordingly.
Note: If the modification of system parameter
setting is in confusion, you can use the “Factory
Value” (DEFT)function key to restore to factory
defaults.

13
Chapter III Basic Operation Instructions
3.1 Startup
Function Introduction
Power on and the display enters the normal display state.
During startup, press the key to access the internal settings.
This display has an outage memory function which can memorize the
current coordinate position, ALE/INC/ZER coordinate mode, and
metric/British system measurement mode when an outage occurs. When the
display starts up next time, the above three pieces of information can be
restored to the state before outage, so that the user does not have to set
parameters again.
3.2 Zeroing
Function Introduction
When the display is in normal display state, press the number axis
zeroing key at any point to zero the displayed value on the coordinate axis.
ALE zeroing does not affect the displayed INC value.
INC zeroing does not affect either the displayed ALE or ZER
value.
If the grating ruler does not move after zeroing, press the zeroing
key for the same axis again to cancel previous zeroing operation
and restore to the value before zeroing.
3.3 Preset Value for an Axis
Function Introduction
to set the displayed value on an axis at current position when the
display is in normal display state.
Example: Process two holes A and B in the axis X direction.
Operating steps：

14
1. As shown in the figure above, the workpiece position is moved after hole
A processing.
2. Hole B needs to be processed now. After aiming the tool at hole A, press
to enter a value.
(If a wrong value is entered during value entry, you can press the “CA”
key to cancel the wrong value.)
3. Move the tool to the position with a displayed value of 27 to process point
B.
Note: In the ZER coordinate system,
When the ZER number setting direction is set to “0”, the displayed
value is equal to the entered value.
When the ZER number setting direction is set to “1”, the displayed
value is equal to the opposite number of the entered value.
You can set the ZER number setting direction in “System Parameter
Setting”.
3.4 Metric/British System Switching
Function Introduction
to switch the displayed unit of size between “mm” (metric system) and
“inch” (British system), so that parts in both metric and British systems can
be processed.
Example: As shown in the figure, the original display is in metric system,
but now the display in British system is required (1 inch = 25.4 mm).
Operating steps：
Press the key to switch between metric and British systems.
If the number axis is in encoder state, when you press the key,
the switching does not work.

15
3.5 Automatic Middling
Function introduction: to find the middle position between two points.
Example: On the rectangular workpiece as shown in the figure, find the
middle position between
points A and B.
Function Introduction：
1. Move the tool and aim it at point A, and press the X0and Y0keys to
zero the count values on both axis X and axis Y.
2. Move the tool and aim it at point B.
3.Press the “1/2” function keys on both axis
X and axis Y to middle the count values on the
two number axes respectively.
4. Move the tool and find the point with valve 0 displayed on both axis
X and axis Y, which is the middle position between points A and B.