Unitronics IO-LC1 I-O Expansion Modules Mode d'emploi
- Taper
- Mode d'emploi
The IO-LC1 and IO-LC3 are I/O
Expansion Modules that can be used in
conjunction with specific Unitronics OPLC
controllers.
IO-LC1 offers 1 Loadcell input; IO-LC3
module offers 3 Loadcell inputs. Both
modules offer 1 PNP (source) input and 2
short-circuit protected PNP (source)
outputs with optional setpoint action that is
defined via software settings.
The interface between the module and the
OPLC is provided by an adapter.
The module may either be snap-mounted
on a DIN rail, or screw-mounted onto a
mounting plate.
Component identification
1
Module-to-module
connector
2
Communication status indicator
3
Power and I/O connection points
4
I/O connection points (IO-LC3 only)
5
Power and I/O status indicators
6
Module-to-module connector port
Note: The single Loadcell input offered by IO-LC1 is marked
LC and is located where the input LC2 is shown above.
■
Before using this product, it is the responsibility of the user to read and understand this document and
any accompanying documentation.
■
All examples and diagrams shown herein are intended to aid understanding, and do not guarantee
operation. Unitronics accepts no responsibility for actual use of this product based on these examples.
■
Please dispose of this product in accordance with local and national standards and regulations.
■
Only qualified service personnel should open this device or carry out repairs.
This document is intended to aid trained and competent personnel in the installation of this equipment as
defined by the European directives for machinery, low voltage, and EMC. Only a technician or engineer trained
in the local and national electrical standards should perform tasks associated with the device’s electrical wiring.
Symbols are used to highlight
information relating to the user’s
personal safety and equipment
protection throughout this document.
When these symbols appear, the
associated information must be read
carefully and understood fully.
■
Failure to comply with appropriate safety guidelines can result in severe personal injury or
property damage. Always exercise proper caution when working with electrical equipment.
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IO-LC1, IO-LC3 User Guide
I/O Expansion Modules 1-3 Loadcell Inputs, 1 Digital In, 2 Out
Symbol
Meaning
Description
Danger
The identified danger causes physical
and property damage.
Warning
The identified danger can cause
physical and property damage.
Caution
Caution
Use caution.
User safety and equipment protection guidelines
IO-LC1, IO-LC3 I/O Expansion Modules
■
Check the user program before running it.
■
Do not attempt to use this device with parameters that exceed permissible levels.
■
To avoid damaging the system, do not connect / disconnect the device when the power is on.
■
Do not install in areas with: excessive or conductive dust, corrosive or flammable gas,
moisture or rain, excessive heat, regular impact shocks or excessive vibration.
■
Leave a minimum of 10mm space for ventilation between the top and bottom edges of the
device and the enclosure walls.
■
Do not place in water or let water leak onto the unit.
■
Do not allow debris to fall inside the unit during installation.
DIN-rail mounting
Snap the device onto the DIN rail as shown below; the module will be squarely situated on the DIN rail.
2 Unitronics Industrial Automation
80mm
(3.15")
44.5mm
(1.75")
93mm
(3.66")
Environmental Considerations
Mounting the Module
IO-LC1, IO-LC3 I/O Expansion Modules
Screw-Mounting
The figure below is not drawn to scale. It may be used as a guide for screw-mounting the module.
Mounting screw type: either M3 or NC6-32.
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(0.228")
68.4mm
93mm
(3.66")
85mm
(3.346")
IO-LC1, IO-LC3 I/O Expansion Modules
An adapter provides the interface between the OPLC and an expansion module. To connect the I/O module to
the adapter or to another module:
1.
Push the module-to-module connector into the port located on the right side of the device.
Note that there is a protective cap provided with the adapter. This cap covers the port of the final
I/O module in the system.
■
To avoid damaging the system, do not connect or disconnect the device when the
power is on.
Component identification
1
Module-to-module
connector
2
Protective cap
■
Unused pins should not be connected. Ignoring this directive may damage the device.
■ Do not connect the ‘Neutral or ‘Line’ signal of the 110/220VAC to the device’s COM pins.
■
Double-check all wiring before turning on the power supply.
Wiring Procedures
Use crimp terminals for wiring; use 26-12 AWG wire (0.13 mm 2–3.31 mm2) for all wiring purposes.
1.
Strip the wire to a length of 7±0.5mm (0.250–0.300 inches).
2.
Unscrew the terminal to its widest position before inserting a wire.
3.
Insert the wire completely into the terminal to ensure that a proper connection can be made.
4.
Tighten enough to keep the wire from pulling free.
■
To avoid damaging the wire, do not exceed a maximum torque of 0.5 N·m (5 kgf·m).
■
Do not use tin, solder, or any other substance on stripped wire that might cause the wire strand to break.
■
Install at maximum distance from high-voltage cables and power equipment.
I/O Wiring—General
■
Input or output cables should not be run through the same multi-core cable or share the same wire.
■
Allow for voltage drop and noise interference with input lines used over an extended distance. Use wire
that is properly sized for the load.
4 Unitronics Industrial Automation
Connecting Expansion Modules
Wiring
Do not touch live wires.
IO-LC1, IO-LC3 I/O Expansion Modules
All of the IO-LC1, IO-LC3 I/O signals are isolated from the controller bus, but are not isolated from the power
supply input. If required, you can provide full isolation by using a separate isolated power-supply.
1.
Connect the "positive" cable to the "+V" terminal, and the "negative" cable to the "0V" terminal.
■
Do not connect the 'Neutral' or 'Line' signal of the 110/220VAC to any of the module's
terminals.
■
In case of voltage fluctuations or non-conformity to voltage power supply
specifications, connect the module to a regulated power supply.
Earthing the module
To maximize system performance, avoid electromagnetic interference by earthing the module.
1. Connect one end of a wire, 14 AWG, to the chassis signal; connect the other end to the cabinet chassis.
This assumes that the cabinet is properly earthed. If this is not the case, do not earth the module.
Caution
■
The wire used to earth the module must not exceed 8 cm in length. If your conditions
do not permit this, do not earth the module.
■
Do not earth the module via the Loadcell cable shield.
External power supply and Digital I/O wiring
See Earthing the module
guidelines above.
■
Refer to External power supply and Digital I/O wiring above for wiring guidelines.
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External Power Supply
Digital I/Os
IO-LC1, IO-LC3 I/O Expansion Modules
■
Use 6 or 4 wire shielded cable (6 wire is recommended).
■
The cable shield should be connected ONLY to the Loadcell chassis. The shield at the other end of the
cable should be left unconnected.
■
Refer to the figures below for wiring guidelines.
6 wire Loadcell wiring 4 wire Loadcell wiring
6 Unitronics Industrial Automation
Loadcell Inputs
IO-LC1, IO-LC3 I/O Expansion Modules
External
Power-Supply
Nominal operating voltage 12 / 24VDC
Operating voltage range 10.2 to 28.8VDC
Power Consumption
Max. current consumption
From the adapter’s 5VDC 60mA
From external power-
supply
See Note 1 for details
Max. total internal power
dissipation
Status Indicator
(RUN) Green LED:
—Lit when a communication link is established between module and OPLC.
—Blinks when the communication link fails.
Loadcell Inputs
Number of inputs 3 for IO-LC3, 1 for IO-LC1
Galvanic isolation
Loadcell to ext. pwr supply No
Loadcell to bus Yes
Loadcell to digital input No
Loadcell to digital outputs No
Input voltage ranges
Signal (+SG & -SG)
Differential Gain Setting (S.W. selectable)
0
1
*Nominal Span
-20mV to +20mV
-80mV to +80mV
*Offset compensation (S.W. selectable) can shift span by approx. -77.5mV to
+77.5mV (2.5mV steps).
Common-Mode 1.5Vmin to 3.5Vmax (relative to the 0V terminal voltage)
Sense (+SN & -SN)
Differential -5V to +5V nominal
Common-Mode 0Vmin to 5Vmax (relative to the 0V terminal voltage)
Excitation output (+E & -E)
Excitation type Software selectable: DC or AC (Alternating polarity square wave, see Note 6)
Differential output voltage 5V nominal
4.70Vmin to 5.20Vmax
Output current
Per Loadcell input 200mA maximum (up to 12 x 350Ω Loadcells)
Total 200mA maximum (up to 12 x 350Ω Loadcells)
Short circuit protection Yes, up to 1 minute
A/D Converter
Conversion method Sigma–Delta
Resolution 24 bits
Conversion period 12.5msec (80Hz)
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At 12V At 24V
1.0W 1.2W
At 12V
At 24V
One 350Ω Loadcell
4 x 350Ω Loadcells
12 x 350Ω Loadcells
45mA
70mA
140mA
30mA
45mA
80mA
IO-LC1, IO-LC3 Technical Specifications
IO-LC1, IO-LC3 I/O Expansion Modules
Linearity error 0.01% maximum of full scale
Common-mode rejection >100dB @ DC, 50Hz, 60Hz
Offset drift 100nV / °C typ.
Gain drift 3ppm / °C typ.
Calibration and Zero —2 to 12 calibration-points (zero-point not required), direct/indirect point
addressing for editing and deleting calibrated points.
—Zero and tare acquisition and/or editing.
—Auto zero tracking
Filter Adjustable settling time up to 24 sec. See Note 2 for details.
Loadcell input values Either one or two independent values, signed 16 or 24 bit. Each weight/strain
value may be represented in a different mode; representation modes are
selected via software.
Polarity Fully bipolar operation – weight/strain values can be either positive or negative.
Representation modes Net, Gross, Net Min, Net Max, uV/V or A/D Raw Value.
*When uV/V is selected for one value, both values will be represented in uV/V.
**The Net and Gross values may also indicate connection problems. See Note 3
for details.
Rounding The Net, Gross, Net Min and Net Max values may be rounded by 1, 2, 5, 10,
20, 50 or 100.
Effective resolution See Effective Resolution, page 10.
Status indicators
(OUT OF RANGE) Red LEDs:
—Lit when the corresponding Loadcell is not connected to the input, or when
the input analog value exceeds the permissible range. See Note 3 for
details.
—Blinks when the external power-supply is not detected. See Note 4 for details.
Digital Input
Number of inputs 1
Input type pnp (source)
Galvanic isolation
Dig. input to ext. supply No
Dig. input to bus Yes
Dig. input to Loadcell No
Dig. input to digital outputs No
Nominal input voltage 12 / 24VDC
Input voltage 0-5VDC for Logic '0'
9-28.8VDC for Logic '1'
Input current 5.5mA @ 12VDC,
11.5mA @ 24VDC
Response time 10mSec typical
Status indicator
(IN) Green LED—Lit when the input is active. See Note 5.
Digital Outputs
Number of outputs 2 pnp (source)
Output type P-MOSFET (open drain)
Galvanic isolation
Dig. output to ext. pwr No
supply
Dig. output to bus Yes
Dig. output to Loadcell No
Dig. output to digital input No
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IO-LC1, IO-LC3 I/O Expansion Modules
Output current 0.3A maximum per output
Maximum frequency 20Hz (resistive load)
0.5Hz (inductive load)
ON voltage drop 0.5V maximum
Short circuit protection Yes
Response time 10mSec typical
Operating modes Both outputs can be independently configured, via the software, to operate in
one of the following modes:
Direct ladder control The output functions like a standard digital output, and is directly controlled
via ladder software. This is the default mode at power-up.
Setpoint The output is linked to one of the active Loadcell input values and operates
according to parameters set by the application software.
Status indicators
(OUT) Red LEDs—Lit when the corresponding output is active.
Environmental IP20/NEMA1
Operating temperature 0 to 50C (32 to 122° F)
Storage temperature -20 to 60C (-4 to 140° F)
Relative Humidity (RH) 5% to 95% (non-condensing)
Mechanical
Dimensions (WxHxD) 80mm x 93mm x 60mm (3.15 x 3.66 x 2.362”)
Weight 170g (6oz)
Mounting Either onto a 35mm DIN-rail or screw- mounted.
Notes:
1.
The maximum current consumption does not provide for output requirements.
The additional current requirement of the outputs must be added.
2.
The minimum settling times and settling time resolutions are: 12.5ms for one active channel, 675ms for two
active channels and 1,012.5ms for three active channels
3.
The following connection-problems will cause the corresponding OUT OF RANGE LED to light up:
-
Disconnection of one of the signal (±SG) lines
-
Disconnection of one or both of the sense (±SN) lines
When the Out Of Range LED is lit, the Out Of Range bit of the corresponding Loadcell Status Message turns
ON, and the Loadcell's Net and Gross values will be set according as follows:
Normal Resolution
High Resolution
Under-
Range:
-215 = -32,768 = 8000 Hex
-223 = -8,388,608 = FF80 0000 Hex
Over-
Range:
215 - 1 = 32,767 = 7FFF Hex
223 - 1 = 8,388,607 = 007F FFFF Hex
4.
When the external power-supply cannot be detected, the No Power Bit in all of the Loadcell Status
Messages turns ON.
5.
The input's LED light up only when a communication link is established between module and OPLC.
6.
AC excitation has the advantage of lower offset drift errors, improving performance over time and in the
presence of ambient temperature changes. To minimize the impact of offset drift errors in your loadcell
application, the use of AC excitation is recommended.
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IO-LC1, IO-LC3 I/O Expansion Modules
Effective Resolution
Gain = 0 (Total input span = -20mV to +20mV)
■
The effective resolution depends on several electrical parameters including the gain setting, the input
span that is used (usually 10mV for 2mV/V Loadcells or 15mV for 3mV/V Loadcells), the amount of
uncompensated differential offset, and the applied input noise.
■
The number of Loadcell inputs used per expansion module affects the sampling rate for each of them,
resulting in lower filter depth and effective resolution.
■
The filter settling time can be programmed separately for each Loadcell input without affecting the
other(s).
10 Unitronics Industrial Automation
IO-LC1, IO-LC3 I/O Expansion Modules
Addressing I/Os on Expansion Modules
Inputs and outputs located on I/O expansion modules that are connected to an OPLC are assigned
addresses that comprise a letter and a number. The letter indicates whether the I/O is an input (I) or an
output (O). The number indicates the I/O’s location in the system. This number relates to both the position of
the expansion module in the system, and to the position of the I/O on that module.
Expansion modules are numbered from 0-7 as shown in the figure below.
Expansion module
identification number
The formula below is used to assign addresses for I/O modules used in conjunction with the OPLC.
X is the number representing a specific module’s location (0-7). Y is the number of the input or output on that
specific module (0-15).
The number that represents the I/O’s location is equal to:
32 + x • 16 + y
Examples
■
Input #3, located on expansion module #2 in the system, will be addressed as I 67,
67 = 32 + 2 • 16 + 3
■
Output #4, located on expansion module #3 in the system, will be addressed as O 84,
84 = 32 + 3 • 16 + 4.
EX90-DI8-RO8 is a stand-alone I/O module. Even if it is the only module in the configuration, the EX90-DI8-
RO8 is always assigned the number 7.
Its I/Os are addressed accordingly.
Example
■
Input #5, located on an EX90-DI8-RO8 connected to an OPLC will be addressed
as I 149, 149 = 32 + 7 • 16 + 5
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Adapter
0 1 2 3 4 5 6 7
IO-LC1, IO-LC3 I/O Expansion Modules
UL Compliance
The following section is relevant to Unitronics’ products that are listed with the UL.
The following models: IO-AI4-AO2, IO-AO6X, IO-ATC8, IO-DI16, IO-DI16-L, IO-DI8-RO4,
IO-DI8-RO4-L, IO-DI8-TO8, IO-DI8-TO8-L, IO-RO16, IO-RO16-L, IO-RO8, IO-RO8L, IO-TO16,
EX-A2X are UL listed for Hazardous Locations.
The following models: EX-D16A3-RO8, EX-D16A3-RO8L, EX-D16A3-TO16, EX-D16A3-TO16L,
IO-AI1X-AO3X, IO-AI4-AO2, IO-AI4-AO2-B, IO-AI8, IO-AI8Y, IO-AO6X, IO-ATC8, IO-D16A3-RO16,
IO-D16A3-RO16L, IO-D16A3-TO16, IO-D16A3-TO16L, IO-DI16, IO-DI16-L, IO-DI8-RO4,
IO-DI8-RO4-L, IO-DI8-RO8, IO-DI8-RO8-L, IO-DI8-TO8, IO-DI8-TO8-L, IO-DI8ACH, IO-LC1, IO-LC3,
IO-PT4, IO-PT400, IO-PT4K, IO-RO16, IO-RO16-L, IO-RO8, IO-RO8L, IO-TO16, EX-A2X, EX-RC1 are UL listed for
Ordinary Location.
UL Ratings, Programmable Controllers for Use in Hazardous Locations,
Class I, Division 2, Groups A, B, C and D
These Release Notes relate to all Unitronics products that bear the UL symbols used to mark products that have been
approved for use in hazardous locations, Class I, Division 2, Groups A, B, C and D.
Caution
▪ This equipment is suitable for use in Class I, Division 2, Groups A, B, C and D, or Non-hazardous locations
only.
▪ Input and output wiring must be in accordance with Class I, Division 2 wiring methods and in accordance with
the authority having jurisdiction.
▪ WARNING—Explosion Hazard—substitution of components may impair suitability for Class I, Division 2.
▪ WARNING – EXPLOSION HAZARD – Do not connect or disconnect equipment unless power has been
switched off or the area is known to be non-hazardous.
▪ WARNING – Exposure to some chemicals may degrade the sealing properties of material used in Relays.
▪ This equipment must be installed using wiring methods as required for Class I, Division 2 as per the NEC
and/or CEC.
Relay Output Resistance Ratings
The products listed below contain relay outputs:
Input/Output expansion modules, Models: IO-DI8-RO4, IO-DI8-RO4-L, IO-RO8, IO-RO8L
▪ When these specific products are used in hazardous locations, they are rated at 3A res, when these specific products are
used in non-hazardous environmental conditions, they are rated at 5A res, as given in the product’s specifications.
12 Unitronics Industrial Automation
IO-LC1, IO-LC3 I/O Expansion Modules
Certification UL des automates programmables, pour une utilisation en environnement à
risques, Class I, Division 2, Groups A, B, C et D.
Cette note fait référence à tous les produits Unitronics portant le symbole UL - produits qui ont été certifiés pour une
utilisation dans des endroits dangereux, Classe I, Division 2, Groupes A, B, C et D.
Attention
▪ Cet équipement est adapté pour une utilisation en Classe I, Division 2, Groupes A, B, C et
D, ou dans Non-dangereux endroits seulement.
▪ Le câblage des entrées/sorties doit être en accord avec les méthodes
de câblage selon la Classe I, Division 2 et en accord avec l’autorité compétente.
▪ AVERTISSEMENT: Risque d’Explosion – Le remplacement de certains composants rend caduque la
certification du produit selon la Classe I, Division 2.
▪ AVERTISSEMENT - DANGER D'EXPLOSION - Ne connecter pas ou ne débranche pas l'équipement sans
avoir préalablement coupé l'alimentation électrique ou la zone est reconnue pour être non dangereuse.
▪ AVERTISSEMENT - L'exposition à certains produits chimiques peut dégrader les propriétés des matériaux
utilisés pour l'étanchéité dans les relais.
▪ Cet équipement doit être installé utilisant des méthodes de câblage suivant la norme Class I, Division 2 NEC et
/ou CEC.
Certification de la résistance des sorties relais
Les produits énumérés ci-dessous contiennent des sorties relais:
▪ Modules d’Extensions d'E/S, modèles: IO-DI8-RO4, IO-DI8-RO4-L, IO-RO8, IO-RO8L.
▪ Lorsque ces produits spécifiques sont utilisés dans des endroits dangereux, ils supportent
un courant de 3A charge résistive, lorsque ces produits spécifiques sont utilisés dans un environnement non
dangereux, ils sont évalués à 5A res, comme indiqué dans les specifications du produit Plages de températures.
The information in this document reflects products at the date of printing. Unitronics reserves the right, subject to all applicable laws, at any time, at
its sole discretion, and without notice, to discontinue or change the features, designs, materials and other specifications of its products, and to
either permanently or temporarily withdraw any of the forgoing from the market.
All information in this document is provided "as is" without warranty of any kind, either expressed or implied, including but not limited to any implied
warranties of merchantability, fitness for a particular purpose, or non-infringement. Unitronics assumes no responsibility for errors or omissions in
the information presented in this document. In no event shall Unitronics be liable for any special, incidental, indirect or consequential damages of
any kind, or any damages whatsoever arising out of or in connection with the use or performance of this information.
The tradenames, trademarks, logos and service marks presented in this document, including their design, are the property of Unitronics (1989)
(R"G) Ltd. or other third parties and you are not permitted to use them without the prior written consent of Unitronics or such third party as may own
them
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