Lika LD350 User manual

User's guide
LD350
LD355
•Multifunction touch-screen display for incremental encoders
•Speed and position indicator, frequency counter, process meter,
timer, stop atch, ...
•Input frequencies up to 1MHz
•Digital, analogue, serial and relay outputs
•DC / AC po er supply: 18÷30Vdc or 115÷230Vac
Suitable for the follo ing models:
•LD350/LD355 touch-screen display
•LD350/LD355-PM touch-screen display ith
115/230Vac po er supply
•LD350/LD355-DO touch-screen display ith
four control outputs + RS-232 serial
interface
•LD350/LD355-AVI touch-screen display ith
analogue output + four control outputs +
RS-232 serial interface
•LD350/LD355-RO touch-screen display ith
t o relay outputs
General Contents
Preliminary information 10
1 - Safety summary 12
2 - Identification 14
3 - Mounting instructions 15
4 - Electrical connections 17
5 - Display and touch screen 26
6 – Menus and parameters 28
7 - Appendix 74
8 - Parameters / serial codes 75
Lika Electronic • Tel. [phone] • [email protected] • .lika.biz
Smart encoders & actuators

This publication was produced by Lika Electronic s.r.l. 2018. All rights reserved. Tutti i diritti riservati. Alle Rechte vorbehalten. Todos los
derechos reservados. Tous droits r serv s.
This document and information contained herein are the property of Lika Electronic s.r.l. and shall not be reproduced in whole or in
part without prior written approval of Lika Electronic s.r.l. Translation, reproduction and total or partial modification (photostat copies,
film and microfilm included and any other means) are forbidden without written authorisation of Lika Electronic s.r.l.
The information herein is subject to change without notice and should not be construed as a commitment by Lika Electronic s.r.l. Lika
Electronic s.r.l. reserves the right to make all modifications at any moments and without forewarning.
This manual is periodically reviewed and revised. As required we suggest checking if a new or updated edition of this document is
available at Lika Electronic s.r.l.'s website. Lika Electronic s.r.l. assumes no responsibility for any errors or omissions in this document.
Critical evaluation of this manual by the user is welcomed. Your comments assist us in preparation of future documentation, in order
to make it as clear and complete as possible. Please send an e-mail to the following address [email protected] for submitting your
comments, suggestions and criticisms.

General contents
General contents................................................................................................................................................ 3
Subject index....................................................................................................................................................... 7
Typographic and iconographic conventions.................................................................................................9
Preliminary information................................................................................................................................. 10
Operational modes.....................................................................................................................................................................10
Functional diagram....................................................................................................................................................................11
1 - Safety summary......................................................................................................................................... 12
1.1 Safety........................................................................................................................................................................................12
1.2 Electrical safety....................................................................................................................................................................12
1.3 Mechanical safety...............................................................................................................................................................12
2 - Identification.............................................................................................................................................. 14
3 - Mounting instructions............................................................................................................................. 15
3.1 Overall dimensions..............................................................................................................................................................15
3.2 Installation.............................................................................................................................................................................16
3.3 Cleaning, maintenance and service notes................................................................................................................16
4 - Electrical connections.............................................................................................................................. 17
4.1 DC power supply..................................................................................................................................................................17
4.2 AC power supply (PM order code)...............................................................................................................................18
4.3 Auxiliary voltage output..................................................................................................................................................18
4.4 A, B incremental inputs (LD350 model).....................................................................................................................19
4.4.1 Wiring of the incremental inputs........................................................................................................................19
4.4.2 Note about mechanical switching contacts....................................................................................................19
4.5 A, /A, B, /B incremental inputs (LD355 model).......................................................................................................20
4.5.1 Wiring of the incremental inputs........................................................................................................................20
4.6 Control inputs.......................................................................................................................................................................21
4.6.1 Wiring of the control inputs..................................................................................................................................21
4.6.2 Note about mechanical switching contacts....................................................................................................21
4.7 Analogue output (AVI order code)...............................................................................................................................22
4.8 Serial interface (AVI and DO order codes)................................................................................................................23
4.9 Control outputs (AVI and DO order codes)..............................................................................................................24
4.9.1 Wiring of the control outputs...............................................................................................................................24
4.10 Relay outputs (RO order code)....................................................................................................................................25
4.10.1 Wiring of the relay outputs.................................................................................................................................25
5 - Display and touch screen........................................................................................................................ 26
5.1 Screen structure for parametrization.........................................................................................................................26
5.2 Screen structure during operation..............................................................................................................................27
6 – Menus and parameters............................................................................................................................ 28
6.1 Overview of the structure................................................................................................................................................28
6.2 General menu.......................................................................................................................................................................33
Operational mode...........................................................................................................................................................33
Encoder properties LD350.........................................................................................................................................33
Encoder properties LD355.........................................................................................................................................33
Encoder supply.................................................................................................................................................................34
Counting direction.........................................................................................................................................................34
Scale units...........................................................................................................................................................................34
Linearization mode........................................................................................................................................................35

Pin preselection...............................................................................................................................................................36
Pin parameter...................................................................................................................................................................36
Back up memory..............................................................................................................................................................36
Factory settings...............................................................................................................................................................36
6.3 Speed operation mode menu.........................................................................................................................................37
Display value......................................................................................................................................................................37
Base frequency (Hz)......................................................................................................................................................37
Decimal point....................................................................................................................................................................37
Sampling time (s)...........................................................................................................................................................38
Wait time (s)......................................................................................................................................................................38
Standstill time (s)...........................................................................................................................................................39
Average filter....................................................................................................................................................................39
For/Rev detection............................................................................................................................................................39
6.4 Process Time operation mode menu...........................................................................................................................40
Display format..................................................................................................................................................................40
Display value......................................................................................................................................................................40
Base frequency (Hz)......................................................................................................................................................40
Sampling time (s)...........................................................................................................................................................41
Wait time (s)......................................................................................................................................................................41
Standstill time (s)...........................................................................................................................................................42
Average filter....................................................................................................................................................................42
6.5 Timer operation mode menu..........................................................................................................................................43
Time base.............................................................................................................................................................................43
Start / Stop.........................................................................................................................................................................43
Auto set / reset................................................................................................................................................................43
Latch function..................................................................................................................................................................44
Set value..............................................................................................................................................................................44
Inc / Dec mode..................................................................................................................................................................44
6.6 Counter operation mode menu....................................................................................................................................45
Count mode........................................................................................................................................................................45
Factor.....................................................................................................................................................................................45
Set value..............................................................................................................................................................................46
Decimal point....................................................................................................................................................................46
Batch mode........................................................................................................................................................................46
Batch set value.................................................................................................................................................................47
6.7 Velocity operation mode menu.....................................................................................................................................48
Start / Stop.........................................................................................................................................................................48
Display value......................................................................................................................................................................48
Base time (s)......................................................................................................................................................................48
Decimal point....................................................................................................................................................................48
Wait time (s)......................................................................................................................................................................49
Standstill time (s)...........................................................................................................................................................49
6.8 Preselection values menu................................................................................................................................................50
Preselection 1....................................................................................................................................................................50
Preselection 2....................................................................................................................................................................50
Preselection 3....................................................................................................................................................................50
Preselection 4....................................................................................................................................................................50
6.9 Preselection 1 menu..........................................................................................................................................................51
Mode 1..................................................................................................................................................................................51

Hysteresis 1........................................................................................................................................................................53
Pulse time 1 (s)................................................................................................................................................................53
Output target 1...............................................................................................................................................................53
Output polarity 1............................................................................................................................................................53
Output lock 1....................................................................................................................................................................54
Start up delay 1 (s)........................................................................................................................................................54
Event color 1......................................................................................................................................................................54
6.10 Preselection 2 menu........................................................................................................................................................55
Mode 2..................................................................................................................................................................................55
Hysteresis 2........................................................................................................................................................................55
Pulse time 2 (s)................................................................................................................................................................55
Output target 2...............................................................................................................................................................55
Output polarity 2............................................................................................................................................................55
Output lock 2....................................................................................................................................................................55
Start up delay 2 (s)........................................................................................................................................................56
Event color 2......................................................................................................................................................................56
6.11 Preselection 3 menu........................................................................................................................................................57
Mode 3..................................................................................................................................................................................57
Hysteresis 3........................................................................................................................................................................57
Pulse time 3 (s)................................................................................................................................................................57
Output target 3...............................................................................................................................................................57
Output polarity 3............................................................................................................................................................57
Output lock 3....................................................................................................................................................................57
Start up delay 3 (s)........................................................................................................................................................58
Event color 3......................................................................................................................................................................58
6.12 Preselection 4 menu........................................................................................................................................................59
Mode 4..................................................................................................................................................................................59
Hysteresis 4........................................................................................................................................................................59
Pulse time 4 (s)................................................................................................................................................................59
Output target 4...............................................................................................................................................................59
Output polarity 4............................................................................................................................................................59
Output lock 4....................................................................................................................................................................60
Start up delay 4 (s)........................................................................................................................................................60
Event color 4......................................................................................................................................................................60
6.13 Serial menu.........................................................................................................................................................................61
Unit number.......................................................................................................................................................................61
Serial baud rate...............................................................................................................................................................61
Serial format......................................................................................................................................................................61
Serial init.............................................................................................................................................................................62
Serial protocol..................................................................................................................................................................62
Serial timer (s)..................................................................................................................................................................63
Serial value.........................................................................................................................................................................63
6.14 Analog menu......................................................................................................................................................................64
Analog format..................................................................................................................................................................64
Analog start.......................................................................................................................................................................64
Analog end..........................................................................................................................................................................64
Analog gain (%)..............................................................................................................................................................65
Analog offset.....................................................................................................................................................................65
6.15 Command menu...............................................................................................................................................................66

Input 1 action...................................................................................................................................................................66
Input 1 config...................................................................................................................................................................68
Input 2 action...................................................................................................................................................................68
Input 2 config...................................................................................................................................................................68
Input 3 action...................................................................................................................................................................68
Input 3 config...................................................................................................................................................................68
6.16 Display menu......................................................................................................................................................................69
Color.......................................................................................................................................................................................69
Brightness (%)..................................................................................................................................................................69
Contrast................................................................................................................................................................................69
Screen saver (s)................................................................................................................................................................69
Up-date time (s)..............................................................................................................................................................70
Font.........................................................................................................................................................................................70
6.17 Linearization menu..........................................................................................................................................................71
P1(X).......................................................................................................................................................................................71
P24(X)....................................................................................................................................................................................71
P1(Y).......................................................................................................................................................................................71
P24(Y)....................................................................................................................................................................................71
6.17.1 Description of the linearisation function.......................................................................................................71
7 - Appendix..................................................................................................................................................... 74
7.1 Data readout via serial interface..................................................................................................................................74
8 - Parameters / serial codes......................................................................................................................... 75
8.1 General menu.......................................................................................................................................................................75
8.2 Speed operation mode menu.........................................................................................................................................75
8.3 Process Time operation mode menu...........................................................................................................................76
8.4 Timer operation mode menu..........................................................................................................................................76
8.5 Counter operation mode menu....................................................................................................................................76
8.6 Velocity operation mode menu.....................................................................................................................................77
8.7 Preselection values menu................................................................................................................................................77
8.8 Preselection 1 menu..........................................................................................................................................................77
8.9 Preselection 2 menu..........................................................................................................................................................78
8.10 Preselection 3 menu........................................................................................................................................................78
8.11 Preselection 4 menu........................................................................................................................................................78
8.12 Serial menu.........................................................................................................................................................................79
8.13 Analog menu......................................................................................................................................................................79
8.14 Command menu...............................................................................................................................................................79
8.15 Display menu......................................................................................................................................................................80
8.16 Linearization menu..........................................................................................................................................................80
8.17 Serial codes of commands............................................................................................................................................82

Subject index
A
Analog end..........................................................................64
Analog format...................................................................64
Analog gain (%)................................................................65
Analog offset.....................................................................65
Analog start........................................................................64
Auto set / reset..................................................................43
Average filter..............................................................39, 42
B
Back up memory...............................................................36
Base frequency (Hz).................................................37, 40
Base time (s).......................................................................48
Batch mode........................................................................46
Batch set value..................................................................47
Brightness (%)...................................................................69
C
Color......................................................................................69
Contrast................................................................................69
Count mode........................................................................45
Counting direction..........................................................34
D
Decimal point.....................................................37, 46, 48
Display format...................................................................40
Display value.......................................................37, 40, 48
E
Encoder properties LD350............................................33
Encoder properties LD355............................................33
Encoder supply..................................................................34
Event color 1......................................................................54
Event color 2......................................................................56
Event color 3......................................................................58
Event color 4......................................................................60
F
Factor....................................................................................45
Factory settings.................................................................36
Font........................................................................................70
For/Rev detection.............................................................39
H
Hysteresis 1.........................................................................53
Hysteresis 2.........................................................................55
Hysteresis 3.........................................................................57
Hysteresis 4.........................................................................59
I
Inc / Dec mode..................................................................44
Input 1 action....................................................................66
Input 1 config....................................................................68
Input 2 action....................................................................68
Input 2 config....................................................................68
Input 3 action....................................................................68
Input 3 config....................................................................68
L
Latch function...................................................................44
Linearization mode..........................................................35
M
Mode 1..................................................................................51
Mode 2..................................................................................55
Mode 3..................................................................................57
Mode 4..................................................................................59
O
Operational mode............................................................33
Output lock 1.....................................................................54
Output lock 2.....................................................................55
Output lock 3.....................................................................57
Output lock 4.....................................................................60
Output polarity 1.............................................................53
Output polarity 2.............................................................55
Output polarity 3.............................................................57
Output polarity 4.............................................................59
Output target 1.................................................................53
Output target 2.................................................................55
Output target 3.................................................................57
Output target 4.................................................................59
P
P1(X).......................................................................................71
P1(Y).......................................................................................71
P24(X)....................................................................................71
P24(Y)....................................................................................71
Pin parameter....................................................................36
Pin preselection................................................................36
Preselection 1....................................................................50
Preselection 2....................................................................50
Preselection 3....................................................................50
Preselection 4....................................................................50
Pulse time 1 (s)..................................................................53
Pulse time 2 (s)..................................................................55
Pulse time 3 (s)..................................................................57
Pulse time 4 (s)..................................................................59
S
Sampling time (s)......................................................38, 41
Scale units...........................................................................34
Screen saver (s).................................................................69
Serial baud rate.................................................................61

Serial format......................................................................61
Serial init..............................................................................62
Serial protocol...................................................................62
Serial timer (s)...................................................................63
Serial value..........................................................................63
Set value.......................................................................44, 46
Standstill time (s)..............................................39, 42, 49
Start / Stop..................................................................43, 48
Start up delay 1 (s)..........................................................54
Start up delay 2 (s)..........................................................56
Start up delay 3 (s)..........................................................58
Start up delay 4 (s)..........................................................60
T
Time base.............................................................................43
U
Unit number.......................................................................61
Up-date time (s)...............................................................70
W
Wait time (s)........................................................38, 41, 49

Typographic and iconographic conventions
In this guide, to make it easier to understand and read the text the following typographic and
iconographic conventions are used:
•parameters and objects both of the device and the interface are coloured in GREEN;
•alarms are coloured in RED;
•states are coloured in FUCSIA.
When scrolling through the text some icons can be found on the side of the page: they are expressly
designed to highlight the parts of the text which are of great interest and significance for the user.
Sometimes they are used to warn against dangers or potential sources of danger arising from the use of
the device. You are advised to follow strictly the instructions given in this guide in order to guarantee
the safety of the user and ensure the performance of the device. In this guide the following symbols are
used:
This icon, followed by the word WARNING, is meant to highlight the parts of the
text where information of great significance for the user can be found: user must
pay the greatest attention to them! Instructions must be followed strictly in order
to guarantee the safety of the user and a correct use of the device. Failure to heed
a warning or comply with instructions could lead to personal injury and/or damage
to the unit or other equipment.
This icon, followed by the word NOTE, is meant to highlight the parts of the text
where important notes needful for a correct and reliable use of the device can be
found. User must pay attention to them! Failure to comply with instructions could
cause the equipment to be set wrongly: hence a faulty and improper working of
the device could be the consequence.
This icon is meant to highlight the parts of the text where suggestions useful for
making it easier to set the device and optimize performance and reliability can be
found. Sometimes this symbol is followed by the word EXAMPLE when instructions
for setting parameters are accompanied by examples to clarify the explanation.

Preliminary information
This guide is designed to provide the most complete information the operator needs to correctly and
safely install and operate the LD350 and LD355 touch-screen indicator series.
LD350 and LD355 touch-screen indicators are designed to interface HTL/TTL encoders or
NPN/PNP/NAMUR sensors and offer several operating modes such as position indicator, tachometer and
speed indicator, frequency / RPM indicator, process meter, counter, timer, stopwatch, etc. The input
frequency can be up to 1 MHz. They also implement the counting direction and the linearisation
functions.
They feature a touch screen and 7-segment graphic display with a complete set of plain text, symbols
and units. The LED display is bright and provides high contrast readability and also allows the background
light to turn red, green or yellow in the event of the set occurrences such as when the threshold limits
are exceeded. The combination of plain text and touch screen functions make the parametrization very
user-friendly and intuitive.
LD350 touch-screen indicator provides two incremental AB inputs for PNP/NPN/NAMUR/TRI-STATE type
signals.
LD355 touch-screen indicator provides four incremental AB /AB inputs for HTL/RS-422 type signals.
In the series the following models are available:
•LD350 / LD355 touch-screen indicator standard version;
•LD350- / LD355-PM provides additional 115-230Vac power supply;
•LD350- / LD355-AVI provides additional 16-bit analogue output, four control outputs and RS-
232 serial interface;
•LD350- / LD355-DO further offers four control outputs and RS-232 serial interface;
•LD350- / LD355-RO is equipped with two relay outputs.
All options (-PM, -AVI, -DO, -RO) can be freely combined.
For technical specifications please refer to the product datasheet.
To make it easier to read the text, this guide can be divided into two main sections.
In the first section (from section 1 to section 4) general information concerning the safety, the
mechanical installation and the electrical connection.
In the second section (from section 5 to section 8) both general and specific information is given on the
operator menu and the setup procedure.
Operational modes
All functions can be configured in the parameter menu.
The device can be set to one of the following operation modes:
•SPEED (only input A or input B are used, depending on the parameter setting), see the “6.3 Speed
operation mode menu” section on page 37.
◦Tachometer / speed indicator

◦Measurement of frequency / RMP indicator
◦Monitoring functions for speed and standstill
•PROCESS TIME (only input A is used), see the “6.4 Process Time operation mode menu” section on
page 40.
◦Processing time indicator (reciprocal speed)
◦Baking time indicator
◦Flow time indicator
•TIMER (only input A or input B are used, depending on the parameter setting), see the “6.5 Timer
operation mode menu” section on page 43
◦Operation as stopwatch (start / stop function can be freely parametrized)
◦Counter for working hours
◦Period measurement
•COUNTER (input A and input B are both used), see the “6.6 Counter operation mode menu”
section on page 45
◦Pulse counter / sum or differential counter
◦Up or down counter
◦Position indicator
◦Quadrature counter
◦Batch counter
•VELOCITY (input A operates as a start input and input B operates as a stop input), see the “6.7
Velocity operation mode menu” section on page 48
◦Runtime measurement as speed indicator
Functional diagram

LD350 • LD355
1 - Safety summary
1.1 Safety
•Always adhere to the professional safety and accident prevention
regulations applicable to your country during device installation and
operation;
•installation and maintenance operations have to be carried out by qualified
personnel only, with power supply disconnected and stationary mechanical
parts;
•device must be used only for the purpose appropriate to its design: use for
purposes other than those for which it has been designed could result in
serious personal and/or the environment damage;
•high current, voltage and moving mechanical parts can cause serious or
fatal injury;
•warning ! Do not use in explosive or flammable areas;
•failure to comply with these precautions or with specific warnings
elsewhere in this manual violates safety standards of design, manufacture,
and intended use of the equipment;
•Lika Electronic assumes no liability for the customer's failure to comply
with these requirements.
1.2 Electrical safety
•Turn OFF power supply before connecting the device;
•connect following to explanation in the ”4 - Electrical connections” section
on page 17;
•in compliance with 2014/30/EU norm on electromagnetic
compatibility, following precautions must be taken:
- before handling and installing the equipment, discharge
electrical charge from your body and tools which may come in touch with
the device;
- power supply must be stabilized without noise; install EMC filters on
device power supply if needed;
- always use shielded cables (twisted pair cables whenever possible);
- avoid cables runs longer than necessary;
- avoid running the signal cable near high voltage power cables;
- mount the device as far as possible from any capacitive or inductive noise
source; shield the device from noise source if needed;
- minimize noise by connecting the unit to ground (GND). Make sure that
ground (GND) is not affected by noise. The connection point to ground can
be situated both on the device side and on user’s side. The best solution to
minimize the interference must be carried out by the user.
1.3 Mechanical safety
•Install the device following strictly the information in the “3 - Mounting
instructions” section;
•do not disassemble the unit;
•do not tool the unit;
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LD350 • LD355
•delicate electronic equipment: handle with care;
•do not subject the device to knocks or shocks;
•respect the environmental characteristics of the device.
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LD350 • LD355
2 - Identification
Device can be identified through the order code and the serial number printed
on the label applied to its body. Information is listed in the delivery document
too. Please always quote the order code and the serial number when reaching
Lika Electronic for purchasing spare parts or needing assistance. For any
information on the technical characteristics of the product, refer to the
technical catalogue.
Warning: devices having order code ending with “/Sxxx” may have
mechanical and electrical characteristics different from standard
and be supplied with additional documentation for special
connections (Technical info).
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LD350 • LD355
3 - Mounting instructions
WARNING
Installation and maintenance operations have to be carried out by qualified
personnel only, with power supply disconnected and mechanical parts
compulsorily in stop.
3.1 Overall dimensions
Mount the display into the provided cut-out (w x h approx. 91 x 43 mm, 3.58” x
1.69’’) without panel clips.
Install panel clips on the display housing and screw until the unit is fixed.
Panel cut out: 91 x 43 mm (3.58” x 1.69’’)
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LD350 • LD355
3.2 Installation
The device is allowed to be installed and operated only within the permissible
temperature range (-20°C +60°C / -4°F +140°F). Please ensure an adequate
ventilation and avoid any direct contact between the device and gases / liquids.
Before installation or maintenance, the unit must be disconnected from all
voltage sources. Furthermore it must be ensured that no danger can arise in the
event of contact with the disconnected voltage sources.
Devices which are supplied by AC voltages must be connected only by means of
switches or circuit breakers with low voltage circuit. The switch or circuit
breaker must be installed as near as possible to the device and further indicated
as separator.
Incoming as well as outgoing wires and wires for extra low voltages (ELV) must
be separated from dangerous electrical cables (SELV circuits) by using double or
increased insulation.
All selected wires and insulations must comply with the provided voltage and
temperature ranges. Furthermore all country and application specific standards
which are relevant for structure, form and quality of the wires must be ensured.
Indications about the permissible wire cross sections for wiring are described in
the product datasheet.
Before starting the unit for the first time it must be ensured that all connections
and wires are firmly plugged in and secured to the screw terminal blocks. All
terminal blocks (including unused ones) must be fastened by turning the
relevant screws clockwise up to the end position.
Overvoltages at the connections must be limited to values in accordance with
the overvoltage category II.
For placement, wiring, environmental conditions as well as shielding and
earthing/grounding of the supply lines you must comply with the general
standards stated for industrial automation industry and the specific shielding
instructions provided by the manufacturer.
3.3 Cleaning, maintenance and service notes
To clean the unit please just use a slightly damp (not wet!), soft cloth. For the
rear side no cleaning is necessary. For an unscheduled, individual cleaning of the
rear side the maintenance technicians or installation operators are self-
responsible.
During normal operation no maintenance is necessary. In case of unexpected
problems, failures or malfunctions the device must be shipped back to the
manufacturer for any checking, adjustment or repair (if necessary).
Unauthorized opening and repair operations can have negative effects or cause
failures to the protection measures of the unit.
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LD350 • LD355
4 - Electrical connections
WARNING
Power supply must be turned off before performing any electrical connection!
The terminal block screws must be tightened using a slotted screwdriver having
a 2 mm wide blade.
4.1 DC po er supply
DC po er supply technical specifications
Input voltage:
Protection circuit:
Power consumption:
Fuse protection:
18Vdc ... 30Vdc
reverse polarity protection
approx. 100 mA (unloaded)
external fuse T 0.5 A
The unit accepts DC supply from 18 to 30 V through terminal blocks 1 and 2.
The power consumption depends on the level of the supply voltage (approx. 100
mA) and the additional current required by the Auxiliary Voltage output (3 –
GND + 4 – Aux. Out, see the “4.3 Auxiliary voltage output” section on page 18).
All GND terminal blocks are internally connected.
NOTE
For AC power supply (PM order code) see the following section.
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LD350 • LD355
4.2 AC po er supply (PM order code)
AC po er supply technical specifications
Input voltage:
Power consumption:
Fuse protection:
115Vac ... 230Vac (50÷60Hz)
approx. 3 VA (unloaded)
external fuse T 0.1 A
The unit with PM order code also accepts AC power supply from 115 V to 230 V
through terminal blocks 24 and 25. The power consumption depends on the
level of the supply voltage (approx. 3 VA) and the additional current required by
the Auxiliary Voltage output (3 – GND + 4 – Aux. Out, see the “4.3 Auxiliary
voltage output” section below).
Devices with PM order code can also be supplied with a DC voltage between 18
V and 30 V through terminals 1 and 2, see the previous “4.1 DC power supply”
section.
4.3 Auxiliary voltage output
Auxiliary voltage output technical specifications (LD350 model)
DC version:
AC version:
24Vdc (approx. 1 V lower than the power supply
voltage), max. 250 mA
24Vdc (±15%), max. 150 mA up to 45°C / 80 mA
when more than 45°C
Auxiliary voltage output technical specifications (LD355 model)
DC version:
AC version:
24Vdc (approx. 1 V lower than the power supply
voltage), max. 250 mA or 5Vdc (±15%), max. 250
mA
24Vdc (±15%) (max. 150 mA up to 45°C / 80 mA
when more than 45°C) or 5Vdc (±15%), max.
250 mA
Terminal blocks 3 and 4 provide an auxiliary output useful for supplying sensors
and encoders.
The output voltage level depends on the power supply.
DC version AC version
The encoder voltage is approx. 1 V lower than the
power supply voltage at terminal blocks 1 and 2
and should be loaded with max. 250 mA.
The encoder voltage is 24 Vdc (± 15%) and should
be loaded with max. 150 mA up to 45° Celsius. At
higher temperature the maximum output current is
reduced to 80 mA.
LD355 model allows the auxiliary voltage output to be set to either 24 Vdc or 5
Vdc. Refer to the Encoder supply parameter in the “6.2 General menu” section
on page 33.
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LD350 • LD355
4.4 A, B incremental inputs (LD350 model)
A, B incremental inputs technical specifications
Number of inputs
(channels):
Configuration:
Format:
Frequency:
Load:
2 (A, B)
PNP, NPN, Namur, Tri-State
HTL (Low = 0 … 3 V, High = 9 … 30 V)
max. 250 kHz
max. 6 mA / Ri > 5 kOhm / 470 pF
The unit provides two inputs for HTL signals through terminal blocks 5 and 7.
The characteristics of the incremental inputs (PNP, NPN, Namur or Tri-State) can
be set in the General menu, see the Encoder properties LD350 parameter in
the “6.2 General menu” section on page 33.
4.4.1 Wiring of the incremental inputs
PNP NPN
Namur Tri-State
Unconnected PNP inputs are always “LOW” and unconnected NPN inputs are
always “HIGH”.
All inputs are designed to receive impulses from electrical impulse sources.
4.4.2 Note about mechanical s itching contacts
When, exceptionally, mechanical contacts are used, please connect an external
capacitor between GND (-) and the corresponding input (+). A capacity of 10 µF
will reduce the input frequency to 20 Hz and miscounting due to contact
bouncing will be eliminated.
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LD350 • LD355
4.5 A, /A, B, /B incremental inputs (LD355 model)
AB, /AB incremental inputs technical specifications
Number of inputs
(channels):
Configuration:
HTL differential:
HTL PNP / NPN:
Load:
4 (A, /A, B, /B)
RS-422, HTL differential, HTL PNP, HTL NPN
HTL (Low = 0 … 3 V, High = 9 … 30 V)
max. 250 kHz
max. 3 mA / Ri > 10 kOhm / 47 pF
The unit provides four pulse inputs at terminal blocks 5, 6, 7 and 8 for HTL/RS-
422 signals. The characteristics of the incremental inputs can be set in the
General menu, see the Encoder properties LD355 parameter in the “6.2
General menu” section on page 33.
4.5.1 Wiring of the incremental inputs
RS-422 HTL differential
HTL PNP, single ended HTL NPN, single ended
Unconnected PNP inputs are always “LOW” and unconnected NPN inputs are
always “HIGH”.
All inputs are designed to receive impulses from electrical impulse sources.
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