Lika LD120-M7 User Manual

LD120

User manual

LD120-M7
SM5

Description

This manual describes the LD120 display and the
sensors of the SM5 series. The purpose of this
system is to display displacements on industrial
machines and automation systems. The
measurement system includes a LED display,
magnetic tape and a magnetic sensor. As the sensor
is moved along the magnetic tape, it detects the
displacement which is shown on the display. The
flexibility of the tape allows it to be used for both
linear and angular applications.

Chapters

1 Safety summary
2 Identification
3 Installation
4 Mounting steps
5 Electrical connections
6 Setup
7 RS485 serial interface
8 Dimensional drawing and cut-out

1 - Safety summary

We strongly recommend carefully reading this user
manual and following the installation guidelines:

• Measurement system (sensor) should be installed

as close as possible to the display.

• Always use shielded and twisted cables if

possible.

• Avoid running the sensor cable near high

voltage power cables (e.g. drive cables).

• Install EMC filters on sensor power supply if

needed.

• Avoid mounting sensor near capacitive or

inductive noise sources such as relays, motors,
and switching power supplies.

Connect according to the chapter 5: “Electrical
connections”.

2 - Identification

The display and sensor can be identified by the
label's data (ordering code, serial number). This
information is listed in the delivery document. For
technical features of the product to make reference
at the technical catalogue.

3 - Installation

Install the product according to the protection level
provided. Protect the system against knocks,
friction, solvents, and respect the environmental
characteristics of the device.

4 - Mounting steps

4.1 Display

Push the display into the cut-out (approx. 68 x 33
mm2) without panel clips.
Install panel clips on the display's housing and screw
until fixed.

4.2 Magnetic tape

See manual supply with the magnetic tape.

4.3 Sensor mounting

4.3.1 Sensor type SM5-R (rectangular)

Sensor can be fixed by means of two M3 screws
over the buttonholes. Make sure that the gap
between sensor and tape is in respect with (fig. 1)
along the total measuring length. Avoid contact
between the parts. You can check planarity and
parallelism between sensor and magnetic tape using
a feeler gauge.

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LD120

figure 1

D = 0,1 mm - 2,1 mm

4.3.2 Sensor type SM5-C (circular)

The sensor can be fixed in a corresponding
mounting hole by means of the two nuts. Make sure
that the gap between sensor and tape is in respect
with (fig. 2) along the total measuring length.
Observe the correct alignment of the marker on the
tape. Avoid contact between the parts. You can
check planarity and parallelism between sensor and
magnetic tape using a feeler gauge.

figure 2

D = 0,1 mm - 2,1 mm

5 - Electrical connections

5.1 SM5 sensor

Plug in the sensor's Mini-DIN connector (circular) on
backside of the display.

5.2 Display

Make the clamp connections as follow:

Serial interface is option.
The ACCU input can supply the device in stand-by
mode with a low consumption. In this way the LED’s
are deactivate while the electronics count and the
sensor remain active.

NOTE:

This device is to be supplied by a Class 2 Circuit or
Low-Voltage Limited Energy or Energy Source not
exceeding 30Vdc.

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D

< 1 °

< 3 ° < 3 °

<3°

D

Marker

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LD120

6 - Setup

6.1 Key's function

 : UP (select value)
 : Shift links (select digit)

* : Save (save data)

P : Program (programming/change parameter)

6.2 Key combinations / Quick functions

6.2.1 Set datum (reference)

Push * key for 3 s to set actual value to datum
value.
Datum value is = rEF + OFS1 + OFSx (where OFSx is
the actually set Offset value).
This function is enabled only if “F_rSt” parameter is
set “on”.

6.2.2 Incremental measurement

Push P and * key simultaneously to switch from
absolute measurement to incremental.
In incremental mode the decimal point flashes.
Zero setting in incremental mode (see 6.2.1) does
not change absolute value in the background.

6.2.3 Mm/inch display modes

Mm/ich display modus can be changed by pushing
 key for 3 s.

6.2.4 Offset value modification

Push P and  keys simultaneously to display Offset
1 value (OFS1). Use  and  keys to change value
and save with * key. Further Offset values OFS2 and
OFS3 can be changed only in setup menu.
This function is enable only if “F_oFS” parameter is
set “on”.
 key allows to scroll OFS1, OFS2 and OFS3 values.
OFS1 = actual value + OFS1 + rEF
OFS2 = actual value + OFS1 + OFS2 + rEF
OFS3 = actual value + OFS1 + OFS3 + rEF

6.2.5 Datum modification

Push P and  keys simultaneously to display datum
value rEF. Use  and  keys to change value and
save with * key.
This function is enabled only if “F_rEF” parameter is
set “on”.

6.3 Setup / Parameter setting

Push P key for 3 s to enter setup and “SEtUP” is
displayed.
Push  key to enter Menu 1 (parameters)
Push * key to enter Menu 2 (RS485 serial I/F)
Push P key to access the next Parameter and
Parameter setting.
Push P key for 3 s to exit the setup at any point.

6.3.1 Default parameters (factory settings)
Default parameter values are written in BOLD
characters. The unit can be reset to default values by
pushing * key while switching on.

6.3.2 Menu 1: Parameters
rES Resolution [10, 50, 100, 1000, InCH, FrEE]

Linear resolution value expressed in µm (microns).
10 = 0,01 mm
50 = 0,05 mm
100 = 0,1 mm
1000 = 1 mm
InCH = sets display mode and measurement unit to

inch (with 3 decimals, e.g. 1.000).

FrEE = allows to input a free resolution factor e.g.

for angle displays (basis of calculation is max.
resolution 0,01 mm).

* = save, P = next parameter, P for 3 s. = exit

FrEE [0.0001, 1.0000]

Only if rES = FrEE.
E.g. angle display with range from 0° to 90° and 0,1°
resolution on a rotating table with circumference of
785,4 mm. Total working range is 785,4 mm : 4 =

196.35 mm.
FrEE = 900 : 19635 = 0,0458
Default value = 0.0001

* = save, P = next parameter, P for 3 s. = exit

dEC Decimal point [0, 1, 2, 3]

Only if rES = FrEE.
Modification of decimal point position.
0 = no decimal point
1 = one decimal (e.g. 1,0)
2 = two decimals (e.g. 1,00)
3 = three decimals (e.g. 1,000)
* = save, P = next parameter, P for 3 s. = exit

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