Innon Link IO User manual

Document name: Link IO - Manual
Document date: 1.2 10/02/2020 1
Link IO –Manual
Link IO –Manual.................................................................................................................................................. 1
Introduction..................................................................................................................................................... 4
Overview...................................................................................................................................................... 4
Available models.......................................................................................................................................... 4
Options ........................................................................................................................................................ 4
System layout .............................................................................................................................................. 5
Hardware......................................................................................................................................................... 5
Overview...................................................................................................................................................... 5
Wiring power supply ................................................................................................................................... 6
Wiring Universal Channels........................................................................................................................... 6
Wiring Digital Outputs................................................................................................................................. 7
Wiring Digital Inputs (main unit only) ......................................................................................................... 7
Wiring Analog Outputs (main unit only)...................................................................................................... 8
Wiring the RS485 networks......................................................................................................................... 8
Setting the expansion...................................................................................................................................... 9
Display navigation ......................................................................................................................................... 10
Display and keys ........................................................................................................................................ 10
Main menu ................................................................................................................................................ 11
Configuration password, log in/log out..................................................................................................... 12
Warnings and alarms................................................................................................................................. 13
Screens diagram ........................................................................................................................................ 14
The external display (optional part no. LNK-IO-DISP) ................................................................................... 15
What it is.................................................................................................................................................... 15
How to connect the external display to the main Link IO unit.................................................................. 16
I/O readings................................................................................................................................................... 17
How the I/O work with Link IO.................................................................................................................. 17
Universal Channels .................................................................................................................................... 17
Digital Outputs........................................................................................................................................... 18
Digital Inputs and Analog Outputs (main unit only).................................................................................. 18
Configure I/O................................................................................................................................................. 19
Universal Channels .................................................................................................................................... 19
Digital Outputs........................................................................................................................................... 20

Document name: Link IO - Manual
Document date: 1.2 10/02/2020 2
Analog Outputs (only main unit) ............................................................................................................... 20
Auto/Manual ................................................................................................................................................. 21
Universal Channels .................................................................................................................................... 21
Digital Outputs........................................................................................................................................... 21
Analog Outputs (main unit only) ............................................................................................................... 21
Functions ....................................................................................................................................................... 22
Pulse counter............................................................................................................................................. 22
Analog input re-scale to analog output..................................................................................................... 23
Digital input to digital output .................................................................................................................... 24
Thermostat ................................................................................................................................................ 25
Network settings ........................................................................................................................................... 27
General note.............................................................................................................................................. 27
Watchdog .................................................................................................................................................. 27
Using an RS485 main unit (part number LNK-IO20-RS-MOD and LNK-IO20-RS-BAC)............................... 28
Using an IP main unit (part number LNK-IO20-IP-MOD and LNK-IO20-IP-BAC)........................................ 29
General settings............................................................................................................................................. 30
Configuring number of expansions ........................................................................................................... 30
Temperatures in Celsius or Fahrenheit ..................................................................................................... 30
Permanent memory use............................................................................................................................ 30
Buzzer “beeping” mode............................................................................................................................. 31
Setting log in password ............................................................................................................................. 31
Backup/Restore settings............................................................................................................................ 32
Restore factory defaults............................................................................................................................ 33
Software version and software information ............................................................................................. 35
The Web Configurator................................................................................................................................... 36
Introduction............................................................................................................................................... 36
The website and how to use it .................................................................................................................. 36
Web tool sections –General ..................................................................................................................... 37
Web tool sections –I/O............................................................................................................................. 38
Web tool sections –Functions .................................................................................................................. 39
Licensing BACnet ........................................................................................................................................... 40
Updating the software................................................................................................................................... 42
Connecting directly to the device.............................................................................................................. 42
Using a USB memory stick......................................................................................................................... 43
BMS Point lists............................................................................................................................................... 44
Modbus...................................................................................................................................................... 44

Document name: Link IO - Manual
Document date: 1.2 10/02/2020 3
BACnet....................................................................................................................................................... 48
Technical data................................................................................................................................................ 52
Drawings.................................................................................................................................................... 52
Specifications............................................................................................................................................. 54
Guidelines for Disposal.............................................................................................................................. 56

Document name: Link IO - Manual
Document date: 1.2 10/02/2020 4
Introduction
Overview
I/O Modules are such a key component in any building automation system, that we wanted to see how we
can perfect every aspect of its operation looking at the hardware, software, and overall usability.
Together with Carel, an Italian controls manufacturer trusted all over the world in critical control
applications for more than 40 years, we have created Link IO - ascalable and fully integrated BMS product
that will last you for many years to come! Now available World-Wide.
Available models
LNK-IO20-IP-MOD Modbus TCP/IP (Hardware part number LNK-IO20-IP)
LNK-IO20-RS-MOD Modbus RS485 (Hardware part number LNK-IO20-RS)
LNK-IO20-IP-BAC BACnet & Modbus TCP/IP (Hardware part number LNK-IO20-IP)
LNK-IO20-RS-BAC BACnet & Modbus RS485 (Hardware part number LNK-IO20-RS)
Options
LNK-IO16-EXP Expansion 6 x DO, 10 x UIO
LNK-ADD-BAC BACnet upgrade for models LNK-IO20-RS-MOD or LNK-IO20-IP-MOD

Document name: Link IO - Manual
Document date: 1.2 10/02/2020 5
System layout
Hardware
Overview
Module
Part Number
Type
RS485
IP
BMS
Display
UIO
DO
DI
AO
LNK-IO20-IP-MOD
HW: LNK-IO20-IP
Link IO
Main
Module
-
Yes
Modbus
Yes
10
6
2
2
LNK-IO20-RS-MOD
HW: LNK-IO20-RS
Link IO
Main
Module
Yes
-
Modbus
Yes
10
6
2
2
LNK-IO20-IP-BAC
HW: LNK-IO20-IP
+
SW: LNK-ADD-BAC
Link IO
Main
Module
-
Yes
Modbus
+
BACnet
Yes
10
6
2
2
LNK-IO20-RS-BAC
HW: LNK-IO20-RS
+
SW: LNK-ADD-BAC
Link IO
Main
Module
Yes
-
Modbus
+
BACnet
Yes
10
6
2
2
LNK-IO16-EXP
Link IO
Expansion
Module
Yes
-
-
-
10
6
-
-

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Wiring power supply
24 Vac +10%/-15% 50/60 Hz, 28 to 36 Vdc +10% to -15%
Consumption main unit (max): 30VA / 12W
Consumption expansion unit (max): 15VA / 6W
AC (24Vac)
DC (28…36Vdc)
Wiring Universal Channels
Maximum current output: 2 mA
Maximum connection cable length: less than 10 m
Thermistor Input
Note: PT100 uses 2 channels
0-1V, 0-5V, 0-10V Input
0-20mA, 4-20mA Input
(max 4 per device)
Digital Input
Pulse Input
(max 2 per device)
0-10V Output
(max 5 per device)
Actuator on 0-10V or PWM output example

Document name: Link IO - Manual
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Wiring Digital Outputs
Output 1 to 5 Relay max 5A, 250Vac only with NO contacts
Output 6 Relay max 1A, 250Vac with NO/NC contacts
Relay out
Wiring Digital Inputs (main unit only)
Maximum current output: 5 mA
Maximum voltage with the contact open: 12 Vdc
Maximum connection cable length: less than 10 m
Digital Input

Document name: Link IO - Manual
Document date: 1.2 10/02/2020 8
Wiring Analog Outputs (main unit only)
Maximum current output: 10 mA
Maximum connection cable length: less than 10 m
0-10V Output
(max 5 per device)
Actuator on 0-10V or PWM output example
Wiring the RS485 networks
Some useful links to our knowledge base website:
How to wire an RS485 network https://know.innon.com/howtowire-non-optoisolated
How to terminate and bias an RS485 network https://know.innon.com/bias-termination-rs485-network
Note: the RS485 ports are not opto-isolated. Carefully check the orientation of the G and G0 terminals on all
devices to be the same and the shield to be connected correctly to avoid damaging the units.
RS485 between main unit and expansions
RS485 between main unit and BMS (*RS version)

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Setting the expansion
The expansion (part number LNK-IO16-EXP) setup is done using the dipswitches on the top side, near the
RS485 connector (J6 BMS). Remember to power cycle the device when the setting is changed.
The dipswitches corresponding to “Ext”, “Baud” and “Prot” must be configured to a fixed position.
The dip-switched are numbered in the front from 1 to 4 and the position is as follow:
Prot
Baud Ext
The “Address” dipswitches will need to be configured according to the expansion number, from “1” to”10”.
Expansion addresses will be always consecutive, so if you have 2 expansions, you will use addresses “1” and
“2”, if you have 3 expansions you will use addresses “1”, “2” and “3” and so on
Address 4 dip-switches configuration is shown for all 10 expansions as follow:
Address 1
Address 2
Address 3
Address 4
Address 5
Address 6
Address 7
Address 8
Address 9
Address 10
Example of configuration for expansion 1, view from the top-down:

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Display navigation
Display and keys
The display in Link IO is a graphical B/W display with backlight with 132x64 pixels.
All the settings are accessible using the display and the navigation keys
Cursor on top-left of the screen or no cursor: go to previous page.
Cursor on top of setting: increase value.
Within a menu: scroll menu up.
Move cursor to next position and confirm setting.
Within a menu: enter menu selection.
Cursor on top-left of the screen or no cursor: go to next page.
Cursor on top of setting: decrease value.
Within a menu: scroll menu down.
Cursor on top-left of the screen or no cursor: go back one menu level.
Cursor on top of setting: send cursor to the top-left of the screen.
If on “warnings and alarms”, return to the last page visited.
Go to the main settings menu.
Go to “configuration warnings and alarms” screens
Settings are password protected and users will have to login to view and edit. The password screen is
displayed when trying to enter any configuration menu to allow the user to login (see in the next chapter
how). “I/O readings” is the only part always accessible without logging in.
Settings of all expansions are configured from the main device. The expansions will not work in isolation.
The display backlight is automatically turned OFF if no button is pressed for more than 5 minutes. This
function makes sure also that the user is automatically logged out and the screen goes back to the main Link
IO page.
The menu button has an independent backlight. If ON, it indicates the user is currently logged in.
The button has independent red backlight. If ON, it indicates there is a problem that needs to be fixed,
such as a configured expansion being offline or a wrong configuration on the Universal Channels.

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Main menu
The main Link screen is shown when the unit boots up.
Pressing the menu button you can view the main device menu
Use the up and down buttons to scroll the options and enter them by pressing .
On the top line of the main menu some quick access information is displayed:
A BMS supervisor is polling the Link IO (online with BMS)
No BMS supervisor is polling the Link IO (offline with BMS)
If expansions are configured, they are all online
If expansions are configured, at least one is offline (not communicating with the main Link IO device)
When shown. It indicated you are not currently logged in. You can only access the “I/O readings” section
Individual functionalities accessible on each menu selection on the screen are going to be discussed
individually in detail later in this manual.
The options from the main menu are
I/O readings
Shows all the live input/output values and statuses.
Does not require to log in.
Configure I/O
Allows the configuration of all Universal Channels and Analog output (main unit only).
It also allows the configuration of the output positions in case of an offline (if watchdog is enabled).
Requires to be logged in.
Auto/Manual
Allows to configure each output as AUTO (controlled by the BMS or any internal function on the Link IO) or
MANUAL (fixed output to a desired state).
Requires to be logged in.
Functions
Allows to control selected outputs depending on selected input values/statuses. Functions available include
Thermostat, Digital in to Digital out, Analog in to Analog out and configurable Pulse Counter.
Required to be logged in.
Network settings
Allows the configuration of the RS485 BMS port (for models equipped with the RS485 port) or the IP BMS
port (for models equipped with the Ethernet port).
It also allows to enable the watchdog to preset the outputs in case of an offline.
Requires to be logged in.
General settings
Allows to access the general settings of the device, such as number of I/O expansions connected,
temperatures in degC or degF, login password change, settings backup/restore function, factory default
install and software version
When expansions are configured, a menu is presented when entering the devices configuration allowing to
select which device you want to configure.

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Configuration password, log in/log out
When trying to access any configuration setting without being logged in, the password screen is displayed
automatically as follow
Use the up and down buttons to increase/decrease each digit value and press enter to move to
the next digit and confirm the value.
The default password is 1234.
The password can be changed from the “General settings” menu.
If the wrong password is inserted, the setting is blanked, and you can try again.
You can exit this screen by pressing back.
If the correct password is inserted, you will be logged in and you will be able to enter any configuration
menu.
You can log out at any time by holding the button back for 5 seconds, until the display goes back to the
main screen.
If you do not press any button for more than 5 minutes, the system will automatically log you out and switch
off the screen backlight (away mode). The screen backlight switches back on by pressing any button.

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Warnings and alarms
The system is self-checking runtime.
You can check if there is any warning by pressing the alarm button.
Warning and alarm screens:
Screen
Description
button backlight
(warning severity)
All is ok with the device: a supervisor is polling on the BMS port, the
Universal Channels are configured correctly and if expansions are
configured, they are all online
OFF
Expansions are configured and at least 1 of them is not responding.
In this example, 5 expansions are configured and expansions 4 and 5 are
not responding
ON
Wrong Universal Channel configurations on the local device or an
expansion module.
In this example, the reported wrong configuration is in the local (main)
device and specifically there are too many channels configured as 0-10V
output and one channel configured as PT100 3 wires with the second
channel being used
ON
No supervisor is communicating with the Link IO device on the BMS port.
The timeout for this warning is configurable.
This is a low severity warning, as the Link IO can be used in isolation with
no BMS
OFF
You can exit these warning screens by pressing back and automatically return to the latest screen visited
when the alarm button was pressed.

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Screens diagram

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The external display (optional part no. LNK-IO-DISP)
What it is
Link IO comes with an on-board display, but it is possible to connect an external display (part number LNK-
IO-DISP).
The external display has got a slightly larger screen and the same 6 buttons with membrane keys instead of
capacitive sensors.
The external display can be used as a commissioning tool, to facilitate the operation of an engineer on site,
having a hand-held display available to use.
But it is also a useful feature when Link IO is enclosed within a panel: the external display can be panel
mounted and be accessible from outside of the panel door, providing all the useful I/O live readings and all
the capabilities of the on-board display.
The external display does not require any configuration: it comes pre-configured and ready to be connected.
Once connected to Link IO, the external display and the on-board display will show the same screens.

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How to connect the external display to the main Link IO unit
The Link IO external display comes with an RJ12 6 pin connector on the back.
You will need to provide a cable to connect the RJ12 to the J3 Display port on Link IO, following the
schematics below.
The maximum cable length allowed between Link IO and the external display is 10 meters.
RJ12 pinout
RJ12 to Link IO
Example
(The colour scheme is based on a standard RJ12 cable. Check your cable, single wires colour might be different!)

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I/O readings
How the I/O work with Link IO
The Link IO system is designed with a main unit communicating with the BMS, configuring the system
through the display, managing Auto/Manual modes for the outputs, functions between inputs and outputs
and establishing safe watchdog statuses in case of the BMS being offline, and optional expansion modules,
which can only manage an internal watchdog in case of loss of connection with the main unit.
The inputs are read and converted as specified on the main unit configuration.
The outputs are controlled with a priority level described here below:
•The BMS supervisor can control the outputs to a desired status/value
•If the BMS watchdog has been enabled and the BMS goes offline, the outputs that are controlled by
the BMS will be configured to their watchdog status/value until the BMS goes back online.
The icon will be shown next to the outputs to know they are in the watchdog state
•If a function is enabled and using an output, the function will bypass any command from the BMS
(and BMS watchdog) and the Link IO main unit will be in full control of the output autonomously.
The icon will be shown next to such output to know it is being controlled by a function
•If an output has been configured in “Manual” mode from the “Auto/Manual” menu, the manual
setting will bypass any command from the BMS or any assigned function.
The icon will be shown next to such output to know it is in manual mode
When visualizing the Inputs and Outputs of an expansion, an additional icon is displayed on both
inputs and outputs in case the expansion is offline with the main unit. The input values are not reliable as the
last valid value is shown, and the outputs can no longer be controlled.
If the expansion watchdog has been enabled, the expansion will also self-position all its outputs to their safe
watchdog status/value until the main unit comes back online.
Universal Channels
Universal Channels are visualised with (in) if they are inputs or (out) if they are outputs.
Temperature inputs show the unit of measure (degC or degF based on the setting, the temperature is also
converted accordingly).
Active analog inputs, digital inputs and pulse/frequency counters do not show any unit of measure.
Outputs show the % value, 0% being the analog value at minimum and 100% at maximum value.
On the example below, see that Universal Channel 4 is used as an output and configured in Manual mode (
) and that Universal Channel 5 is configured to be controlled by a function ( ).
Digital inputs are still shown with the decimal point. Value 1.0 is shown with the digital input closed, value
0.0 is shown with the digital input opened.

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Note below how both inputs and outputs are displayed with the icon when an expansion is offline
Digital Outputs
Digital Outputs are all displayed in one screen.
In the example below DO2 and DO3 are in manual mode and DO5 is associated to a function
The Digital Outputs of an expansion that is momentarily offline are going to display the icon
Digital Inputs and Analog Outputs (main unit only)
The main units are equipped with 4 extra points compared to the expansions: 2 digital inputs and 2 analog
outputs.
On the main unit (local) it is possible to visualise such extra points together in one screen
The digital input shows value 1 when the input is closed, value 0 when the input is opened.

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Configure I/O
Universal Channels
Universal Channels are flexible connections that can be configured either as Inputs or Outputs with many
different types of signals available to be configured.
Check the following table to have an overview of all the possible configurations.
Please refer to the column “Max per device” to know the configuration limits of each device.
I/O
Group
Type
Max per
device
Filter/Speed
/Current
Input
Temperature
sensors
(passive inputs)
NTC 10K3A1
10
Filter: 0-9
0= fast reading,
no interpolation
9= slow reading, 9
readings
interpolation
NTC 10K4A1
10
NTC CAREL
10
PT1000
10
PT500
10
PT100 (3 wires, 2 inputs,
requires the next input to be
configured as “NOT USED”)
5
PTC_R
10
NTC 0-150 CAREL
10
NTC -50T90 CAREL
10
NTC -10T170 CAREL
10
Active analog
inputs
0-1V
10
0-10V
10
0-5V (power from Link)
2
0-5V (external power supply)
10
0-20mA
4
4-20mA
Digital inputs
(clean contact)
DIGITAL INPUT
10
Speed:
FAST-NORMAL
Pulse/Frequency
counter input
PULSE COUNT
2
Current:
50uA
500uA
TTL level
For transistor out
reading
FREQUENCY MEASURE
Output
0-10V
0-10V
5
Not applicable
PWM
PWM 100Hz
10
PWM 2kHz
10

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For every Universal Channel configured as “Output” it is possible to configure the desired output in case the
Watchdog function is used and enabled
In the example below, Universal Channels 4, 5, 8 and 10 are configured as outputs. In case of the watchdog
function driving the outputs, Universal channel 4 would go to 0%, channel 5 to 50% and channels 8 and 10
would go to 100% full output
Digital Outputs
The digital outputs are driven by relays.
For every Digital Output it is possible to configure the desired status in case the Watchdog function is used
and enabled.
In the example below all the Digital Outputs are going to an “OFF” status in case of the Watchdog function
driving the outputs.
Note that output 6 provides a relay with both NO and NC contacts.
Analog Outputs (only main unit)
The main unit has 2 Digital Inputs and 2 Analog Outputs more compared to the expansion devices. The
Analog Outputs can be configured as 0-10V, PWM 100Hz or PWM 2kHz
For each Analog Output it is possible to configure the desired value in case the Watchdog function is used
and enabled. The settings are in the same screen of the Digital Output
In the example both analog output would go to 0% in case of the Watchdog function driving the outputs.