Tridium VYKON IO-16-485 Programming manual

3951 Westerre Parkway, Suite 350
Richmond, Virginia 23233 USA
Remote I/O Module (IO-16-485)
Mounting and Wiring Instructions
Remote I/O Module (IO-16-485) Mounting and Wiring Instructions
Part Number 11156, Rev 1.3 Updated: August 20, 2014 1
JACE, Niagara Framework, Niagara AX Framework and the Sedona Framework are trademarks of Tridium, Inc.
This document covers the mounting and wiring of a Remote I/O Module (IO-16-485),
for expanding a VYKON®JACE®controller. It assumes that you are an engineer,
technician, or service person who is performing access system design or installation.
Please read through this entire document before beginning the installation procedures.
These are the main topics included in this document:
This document does not discuss mounting and wiring of other components, or software configuration. For more
information on these topics, refer to documents listed in the “Related Documentation” section on page 2.
Product Description
The IO-16-485 expands a Vykon JACE1with 16 I/O points that can be remotely located, including
• 8 – universal inputs (UIs), compatible with 0–10Vdc, 4–20mA, dry contacts, pulsing dry contacts,
0–100K ohm resistive, or Type 3 thermistor temperature sensors.
• 4 – digital outputs with Form-A relay contacts, for on/off control of loads up to 24Vac/dc, at 0.5A max.
• 4 – 0–10Vdc analog outputs for analog control of loads at 2.5K ohm minimum, or 4mA drain maximum.
The IO-16-485 module uses DIN rail mounting, and has two end-mounted 6-pin connectors that support
direct-chaining (in-line attachment) to other IO-16-485 modules.
Communications to the remote JACE uses RS-485 multidrop on 3 wires of an end-mounted 6-pin connector.
The other 3 wires on that connector are primary DC power and battery backup for the module, which can be
supplied from that same JACE (such as a J-x02-XPR-24 or JACE-700). Alternatively, you can power the
IO-16-485 locally with a DIN-mountable NPB-PWR-UN universal AC power supply, or a third-party
12–15Vdc power supply, and wire only the RS-485 bus back to the parent JACE controller.
• Product Description, page 1
• System Planning, page 2
• Preparation, page 5
• Precautions, page 5 • RS-485 Communications, page 14
• Installation and Start-up Outline, page 7 • Inputs, page 14
• Physical Mounting, page 7 • Outputs, page 17
• IO-16-485 Board Layout and Terminals, page 9 • Nrio16Module (Software)
Representation, page 19
• Wiring Details, page 10
• Grounding, page 10 • Power up and Initial Checkout, page 19
• Power from JACE 6-Position Connector, page 11 • Replacement Parts, page 20
• Power from local NPB-PWR-UN module, page 12 • Replacing the IO-16-485, page 21
• Power from third party 12–15Vdc power supply, page 13 • Certifications, page 23
1. JACE with NiagaraAX-3.4 or later and an available RS-485 port. See “System Planning,” page 2 for more details.

Remote I/O Module (IO-16-485) Mounting and Wiring Instructions
Updated: August 20, 2014 Part Number 11156, Rev 1.3
System Planning
Related Documentation
2
Related Documentation
For more information on mounting and wiring a system, refer to appropriate JACE (model) Mounting & Wiring
Instructions document.
For software configuration details on the I/O points provided by the IO-16-485 module, refer to:
• NiagaraAX NRIO Guide.
System Planning
The maximum number of IO-16-485 modules supported by a JACE differs according to its model type. In
addition, depending on the station resource usages in a JACE, fewer (than maximum) IO-16-485 modules may
be added, while still retaining acceptable system operation. See “Supported numbers of IO-16-485.”
Other considerations also apply when adding IO-16-485 modules. For example, an IO-16-485 module under a
JACE-2/3E/6/6E series controller will not have the inherent “battery backup” feature provided by the later
J-x02-XPR-24 (M2M JACE) or JACE-700 series controller platforms. See “About battery-backup operation.”
Finally, when cabling power to IO-16-485 modules located in other locations than the JACE, allowances must
be made for “voltage drops” introduced by cabling distances. See “Voltage drop considerations.”
Supported numbers of IO-16-485
Table 1 provides a quick comparison of JACE models compatible with IO-16-485 modules, including the
maximum possible number of IO-16-485 modules supported.
Notes • Station operation of each JACE at maximum limits below with only the necessary NiagaraAX
software components (Nrio driver and associated points) is roughly at 50% resource usage, without
other driver networks, control logic, and so on. Therefore, maximum numbers may be less, say if
an existing JACE-2/3E/6/6E controller with one or more “Ndio based” (IO-34, IO-16) modules.
• Currently, only JACE models listed below, at NiagaraAX-3.4 or later, support IO-16-485 modules.
Table 1 Maximum number of IO-16-485 modules supported, by compatible JACE platform models.
JACE model Max. Number of IO-16-485 6-Position Power/RS-485?1
1. Powering IO-16-485 modules from a JACE with 6-position power/RS-485 provides battery backup during “power blips”.
Max. Number Powered by JACE2
2. Max. number powered by JACE assumes IO-16-485 are located nearby with minimal “voltage drop” from power cabling.
If a JACE supports more IO-16-485 modules than this (e.g. JACE-700), or if some IO-16-485 modules are long distances away (for
example 900 feet away), they need to be powered locally by NPB-PWR-UN, or other battery-backed 12V power supply.
JACE-700 (JACE-7) 16 Yes 8
J-202-XPR-24 (M2M JACE 2) 33
3. In addition to 16 points of onboard I/O provided by this JACE.
Yes 3
J-602-XPR-24 (M2M JACE 6) 153Yes 3
SEC-J-6xx (Security JACE) 44
4. The SEC-J-6xx (Security JACE) will likely have some number of security modules (SEC-R2R, SEC-RIO), which reduces this
maximum number limit. Enterprise Security version 2.2 is required to configure IO-16-485 modules from within the Security
application.
Yes 4
JACE-2, JACE-3E series 4 No —5
5. JACE-2/3E/6/6E series controllers do not have 6-position power/RS-485 connector to power IO-16-485 modules. Therefore, all
modules must be powered directly from an NPB-PWR-UN, or other battery-backed 12V power supply. The maximum number (16)
shown for a JACE-6 or JACE-6E assume a dedicated NPB-PWR-UN for just the IO-16-485 modules.
JACE-6 , JACE-6E series 16 No —5

System Planning About battery-backup operation
Remote I/O Module (IO-16-485) Mounting and Wiring Instructions
Part Number 11156, Rev 1.3 Updated:August 20, 2014 3
About battery-backup operation
When IO-16-485 modules are powered by JACE platforms with 6-position power/RS-485 connectors, that is,
wired to the PS+, PS-, and BB terminals, they can benefit from “battery backed” protection against system
power events. Note this requires the JACE to have the optional (external) sealed lead acid battery installed—as
the JACE’s internal NiMH battery provides “power blip” backup only for its onboard circuitry, as well as a
“graceful shutdown” of its running station, if a longer power outage occurs.
Note The other “direct attachment type” I/O expansion modules (IO-16, IO-34, using Ndio driver) already
provide this type of “shutdown protection” described above.
An IO-16-485 with battery backup can provide continuous system operation during a power event—essentially
making it a “non event” for both the JACE and the IO-16-485 module. Depending on the capacity of the external
battery(ies), this backup operation can extend over many minutes of AC power loss, and/or over multiple
successive power blips. An IO-16-485 wired this way is often described as “powered by the JACE”, although
during normal operation, sometimes power is actually supplied by the NPB-PWR-UN module attached to, and
powering, the JACE itself (JACE-700, SEC-J-601).
Note this “supplied by JACE” battery-backup operation is not available when using IO-16-485 modules with
JACE-2/3E/6/6E series controllers, that is JACEs without the 6-position power/RS-485 connector. Or, in any
scenarios where IO-16-485 modules must be located many hundreds of feet away from the JACE (cabling
“voltage drop” issues). In these cases, you must locally power those IO-16-485 modules, using one of two
methods:
• Local NPB-PWR-UN attachment to the IO-16-485 module(s). Although convenient, be aware that this
invites power event issues. See “Operation without battery-backup.”
• Third party, battery-backed 12Vdc power supply, wired to the PS+ and PS- terminals of the IO-16-485
module’s 6-position end connector. This is typically recommended, for reasons noted below.
Note that power wiring for all different scenarios is included in this document. See “Wiring Details,” page 10.
Operation without battery-backup
If an IO-16-485 module is powered locally with an NPB-PWR-UN (for example, a JACE-6 series job), and a
momentary AC power loss occurs, note that a number of undesirable things can result, including:
• Load cycling from IO-16-485 relays dropping out, including several seconds lag to first re-establish
communications with the JACE (Nrio driver) before relays can pull in again, as needed.
• Loss of totalized “counts” originating in the IO-16-485.
• History (logging) entries for associated IO points as “down,” as well as Nrio “device down” alarms.
Further, loss of power without battery backup makes an IO firmware upgrade a risky operation. Such an upgrade
is initiated from the “Nrio Device Manager” view (in a station connection to the JACE). If this upgrade process
is interrupted by an IO-16-485 power cycle, the module may be rendered inoperable—and will likely need to be
replaced.
Therefore, consider powering IO-16-485 modules with a battery-backed 12V power supply, as necessary.

Remote I/O Module (IO-16-485) Mounting and Wiring Instructions
Updated: August 20, 2014 Part Number 11156, Rev 1.3
System Planning
Voltage drop considerations
4
Voltage drop considerations
When using the JACE and its backup battery to power IO-16-485 modules, and some modules are not mounted
in the same enclosure with the JACE, you must be aware of voltage drops in the connecting “trunk power”
cabling. Typically, this applies only if modules are located in different locations—that is, not near the JACE.
Note The 15Vdc power supply and the backup battery(ies) charged by the JACE must always be located
nearby the JACE, either in the same enclosure (typical), or in an adjacent enclosure.
Note that each IO-16-485 draws (at most, when all four relays are pulled in) 0.125A, and thus can introduce
voltage drop when long cabling distances are used for power/backup battery. In addition, when sizing the sealed
lead-acid battery(ies) for a JACE, you should factor in additional Ah capacity according to the numbers of
IO-16-485 modules. Table 2 provides a summary of IO-16-485 power consumption for these purposes
Undersized selection of power cabling can result in unacceptably high voltage drops, and remotely located
IO-16-485 modules may not operate correctly—especially during emergency (battery backup) operation.
The maximum allowable voltage drop due to wiring is 1.5V. This equates to the difference in voltage
measured across the PS+ and PS- at the source JACE power supply, and the PS+ and PS- at the furthest
expansion module (IO-16-485). Or, when powered by battery backup, the difference in voltage measured across
the BB and PS- at the source JACE, and the BB and PS- at the furthest expansion module (IO-16-485).
Table 3 provides a voltage drop chart, showing voltage drops per 100 feet of paired wire of different gauges
(AWG), at different load amps.
For an example, consider a system where two IO-16-485 modules are mounted remotely in a location 500 feet
(366m) away. In this example, worst-case amps used by each remote IO-16-485 is 0.125A. Looking at Table 3
at the 0.25A column, a #16 AWG cable pair drops 0.20V per 100 feet, meaning a 500 foot run would drop
slightly over 1V—this would be a good choice over an #18 AWG cable, which would drop over 2V (above the
1.5V maximum allowable drop).
Table 2 Amps/Watts, and Recommended Minimum 12V SLA battery A-Hr capacities, per IO-16-485.
Device Max per
System
Amps / W used
@ 15Vdc (each)
12V Backup Battery (4 hours)
min. recommended Ah (each) Notes
IO-16-485 see Table 1 0.125 A / 1.88 W 0.65 Ah Has 4 on-board relays.
Table 3 Voltage Drop Per 100 Feet Run (30m) of Paired Wire.
Gauge
(AWG)
Load Current
0.10A 0.25A 0.5A 1.0A 1.5A 2.0A 4.0A
10 0.020 0.05 0.10 0.20 0.30 0.40 0.80
12 0.032 0.08 0.16 0.32 0.48 0.64 1.27
14 0.050 0.13 0.25 0.50 0.75 1.01 2.02
16 0.080 0.20 0.40 0.80 1.20 1.60 3.20
18 0.127 0.32 0.64 1.27 1.91 2.54 5.08
20 0.202 0.50 1.01 2.02 3.03 4.03 8.07
22 0.320 0.80 1.60 3.20 4.80 6.40 12.81

Preparation Included in this Package
Remote I/O Module (IO-16-485) Mounting and Wiring Instructions
Part Number 11156, Rev 1.3 Updated:August 20, 2014 5
Preparation
Unpack the IO-16-485 module and inspect the contents of the package for damaged or missing components. If
damaged, notify the appropriate carrier at once, and return for immediate replacement (see “Returning a
Defective Unit,” page 22). See the next sections “Included in this Package” and “Material and Tools Required”.
Included in this Package
Included in this package you should find the following items:
• a Remote I/O Module (IO-16-485).
• this Remote I/O Module ( IO-16-485 ) Mounting and Wiring Instructions , Part Number 11156, Rev 1.3.
• a hardware bag containing the following items:
– Four (4) pin-mount, 6-position, screw-terminal connectors for connection of universal inputs, analog
outputs, and relay outputs. For more details, see “About Screw Terminal Connectors,” page 9.
– One (1) 6-position screw terminal end-plug, for wiring RS-485 communications from the parent
JACE, as well as 15Vdc power and battery backup.
– One (1) grounding wire, with quick-disconnect 0.187" female connector.
– Eight (8) 499-ohm resistors, used for 4–20mA inputs.
Material and Tools Required
The following supplies and tools are required for installation:
• Approved 12–15Vdc power supply source and (optional) 12Vdc backup battery source, by either:
– Wiring to the remote parent JACE controller’s 6-position “Powered RS-485” connector, such as on a
J-x02-XPR-24 controller or JACE-700 controller. This is the recommended method.
– Using a DIN-mountable NPB-PWR-UN power supply to furnish 15Vdc power to the IO-16-485.
– Using a third-party 12–15Vdc power supply, with output regulated to within ± 4%.
• If DIN mounting, a DIN rail, type NS35/7.5 (35mm x 7.5mm) and DIN rail end-clips (stop clips), and
screws for mounting. See Figure 1 on page 8. If DIN rail not used, suitable screws for mounting base of
Remote I/O Module module.
• Suitable tools and supplies for making all wiring terminations.
Precautions
This document uses the following warning and caution conventions:
Caution Cautions remind the reader to be careful. They alert readers to situations where there is a chance
that the reader might perform an action that cannot be undone, might receive unexpected results, or
might lose data. Cautions contain an explanation of why the action is potentially problematic.
Warning Warnings alertthe readertoproceedwithextremecare.Theyalertreaderstosituations where there
is a chance that the reader might do something that can result in personal injury or equipment
damage. Warnings contain an explanation of why the action is potentially dangerous.

Remote I/O Module (IO-16-485) Mounting and Wiring Instructions
Updated: August 20, 2014 Part Number 11156, Rev 1.3
Precautions
Safety Precautions
6
Safety Precautions
The following items are warnings of a general nature relating to the installation and start-up of a compatible
JACE controller. Be sure to heed these warnings to prevent personal injury or equipment damage.
Warning • A 15Vdc circuit powers the IO-16-485 module from the JACE controller. Disconnect power
before installation or servicing to prevent electrical shock or equipment damage.
• Make all connections in accordance with national and local electrical codes. Use copper
conductors only.
• To reduce the risk of fire or electrical shock, install in a controlled environment relatively free
of contaminants.
• JACE controllers and I/O modules are only intended for use as monitoring and control devices.
To prevent data loss or equipment damage, do not use them for any other purposes.
Static Discharge Precautions
These items are cautionary notes to help prevent equipment damage or loss of data caused by static discharge.
Caution • Static charges produce voltages high enough to damage electronic components. The
microprocessors and associated circuitry within a Remote I/O Module are sensitive to static
discharge. Follow these precautions when installing, servicing, or operating the system:
• Work in a static-free area.
• Discharge any static electricity you may have accumulated. Discharge static electricity by
touching a known, securely grounded object.
• Do not handle the printed circuit board (PCB) without proper protection against static discharge.
Use a wrist strap when handling PCBs, with the wrist strap clamp secured to earth ground.
Module Connection Precautions
Caution Do not connect more than the maximum number of IO-16-485 modules to the RS-485 port of the
parent JACE controller—note that 16 is the maximum number supported in software. However, less
IO-16-485 modules may be supported. See “Supported numbers of IO-16-485,” page 2.
WEEE (Waste of Electrical and Electronic Equipment)
Recycling of Electronic Products: (International Installations)
In 2006 the European Union adopted regulations (WEEE) for the collection and recycling of all waste electrical
and electronic equipment. It is no longer allowable to simply throw away such equipment. Instead, these
products must enter the recycling process.
To properly dispose of this product, please return it to your local authority collection point. If such a facility is
not available, please send it to:
Tridium Europe Ltd
1, The Grainstore
Brooks Green Road
West Sussex
RH13 8GR
United Kingdom

Installation and Start-up Outline WEEE (Waste of Electrical and Electronic Equipment)
Remote I/O Module (IO-16-485) Mounting and Wiring Instructions
Part Number 11156, Rev 1.3 Updated:August 20, 2014 7
Installation and Start-up Outline
Note If installing the JACE and IO-16-485 module at the same time, please refer to the appropriate JACE
Mounting & Wiring Guide document to install the JACE controller.
The major steps to installing and starting the IO-16-485 module are outlined as follows:
1. Physically mount the IO-16-485 module onto DIN rail. See “Physical Mounting.” If directly attaching to
other modules, ensure that the 6-position end connector(s) are properly seated into the end connectors of
the other units. Note the previous “Module Connection Precautions” on page 6.
2. Make wiring connections for grounding, power, RS-485 communications, and I/O points. See “Wiring
Details,” page 10.
3. Apply power and perform an initial checkout. See “Power up and Initial Checkout” on page 19.
Physical Mounting
The following applies to mounting a IO-16-485 Remote I/O Module:
• You can mount the unit in any orientation. It it not necessary to remove the cover before mounting.
• Mounting on a 35mm wide DIN rail is recommended. The IO-16-485 unit base has a molded DIN rail slot
and locking clip, which simplifies mounting 2 or more units together, and/or to an NPB-PWR-UN power
supply. Mounting on a DIN rail ensures accurate alignment of connectors between all modules.
• If DIN rail mounting is impractical, you can use screws in mounting tabs on the IO-16-485. Mounting tab
dimensions are on the last page of this document.
Procedure 1 provides step-by-step instructions for mounting the IO-16-485 module on an installed DIN rail.
Procedure 1 To mount on DIN rail.
Step 1 Position the IO-16-485 module on the rail, tilting to hook DIN rail tabs over one edge of the DIN rail
(Figure 1).
Step 2 Use a screwdriver to pry down the plastic locking clip, and push down and in on the IO-16-485, to
force the locking clip to snap over the other edge of the DIN rail.
Step 3 Slide the IO-16-485 module along the DIN rail to its intended location.
If connecting to another module already mounted, seat its 6-position plug into that module’s
connector socket.
Step 4 Install DIN rail end clips to secure the assembly, or install screws in mounting tabs.
Step 5 Repeat this for all items, until all are mounted on the DIN rail(s), firmly connected to each other, and
secured with DIN rail end clips or mounting tab screws.

Remote I/O Module (IO-16-485) Mounting and Wiring Instructions
Updated: August 20, 2014 Part Number 11156, Rev 1.3
Physical Mounting
WEEE (Waste of Electrical and Electronic Equipment)
8
Figure 1 IO-16-485 module DIN mounting details.
,
Note To remove a IO-16-485 module from DIN rail, remove DIN rail end clips or mounting tab screws, and
(if applicable) slide it away from other modules. Insert a screwdriver in the center plastic locking tab
and pull downwards, then lift the unit outwards.
Mounting on DIN Rail Removing from DIN Rail
6-position
connector plug
with cabling to
JACE and other
remote modules.
NPB-PWR-UN
(if used for power) IO-16-485
IO-16-485 IO-16-485
Secure with screws in two
mounting tabs on right side
of last unit in assembly.
NOTE: Be careful screws
donottwist or torqueunit on
the DIN rail!
Install DIN
rail end clip
at left end of
assembly

IO-16-485 Board Layout and Terminals About Screw Terminal Connectors
Remote I/O Module (IO-16-485) Mounting and Wiring Instructions
Part Number 11156, Rev 1.3 Updated:August 20, 2014 9
IO-16-485 Board Layout and Terminals
The IO-16-485 module provides 8 universal inputs, 4 digital relay outputs, and 4 0–10Vdc analog outputs.
Wiring terminal positions are shown below (Figure 2), along with LED locations.
Figure 2 Remote I/O Module Wiring Terminal Locations (screw terminal connectors shown installed).
About Screw Terminal Connectors
Screw-terminal connectors are shipped loose in a separate hardware bag. If desired, you can make wiring
terminations to connectors before installing on the IO-16-485 circuit board pins. Removal of the pin-mounted
connectors may be difficult, especially if they are pushed all the way down and wiring has been landed.
In general, it may be easiest to wire to loose connectors (held next to pins), then install them after completing.
Caution Before using the method below to remove connectors, remove all power to the IO-16-485, and
remove power to any other connected external devices. Otherwise, a short circuit will result!
To remove a pin-mounted connector plug using needle nose pliers, with all power removed (see Caution).
• Insert the tips of the pliers into the outermost wiring termination ports of the connector. Note that if wiring
is already landed in those ports, you may need to remove those wires first.
• With a gentle rocking motion, pull upwards, perpendicular to the circuit board.
• The connector will come free from the circuit board pins. If you removed wiring from the outermost
connector ports, reconnect that wiring as it was before.
6 Pin
Power In
RS-485
(Expansion
Bus)
Analog Vdc Outputs
(AOs) 1–4
Universal Inputs
(UIs) 1–4
Earth Grounding
Connector Lug
D1
D2
D3
D4
1C2
3C4
Universal Inputs
(UIs) 5–8
6 Pin Connector
(Expansion Bus)
includes RS-485
Digital Relay Outputs
(DOs) 1–4
PS–
BB
RS-485 –
PS+
RS-485 +
RS-485 S
AO1
AO2
AO3
AO4
0V
0V
RS-485
Status
LED
Relay
Output
LEDs
U5
U6
U7
U8
OV
OV
EARTH
U1
U2
U3
U4
OV
OV

Remote I/O Module (IO-16-485) Mounting and Wiring Instructions
Updated: August 20, 2014 Part Number 11156, Rev 1.3
Wiring Details
Grounding
10
Wiring Details
See Figure 2 to locate connectors and other components on the Remote I/O Module.
Make connections to the Remote I/O Module in the following order.
1. Connect the earth grounding wire (with spade connector) from the earth ground lug on the IO-16-485 to
a nearby earth grounding point. See the “Grounding” section on page 10 for details.
2. Wire to supply power to the IO-16-485, but do not energize the power source until all other wiring is
completed. Depending on the JACE, and how you are powering the IO-16-485, methods differ:
a. If powering the IO-16-485 from a JACE that is equipped with a 6-position “Powered RS-485”
connector (supplies 15Vdc and battery backup on 3 wires of this connector), unplug this connector at
the JACE. Then wire to the 6-position connector plug for each assembly of IO-16-485 modules, in a
“shortest route” fashion. See “Power from JACE 6-Position Connector,” page 11.
This power method is not available for most JACE-2/6 series—instead use method bor cbelow.
b. If powering the IO-16-485 from a local NPB-PWR-UN power supply module, wire the
disconnected AC line circuit to the 2-position terminal block under the NPB-PWR-UN’s cover.
See “Power from local NPB-PWR-UN module” on page 12.
c. If powering the IO-16-485 from a third-party 12–15Vdc power supply, wire the positive and negative
lines from the power supply to the PS+ and PS– terminals of the 6-position end connector plug.
See “Power from third party 12–15Vdc power supply” on page 13.
3. Connect RS-485 wiring between the IO-16-485 and the JACE, and (if applicable) to other remote
IO-16-485 modules, in a continuous multidrop fashion. See “RS-485 Communications” on page 14.
4. Connect I/O wiring. See sections “Inputs” on page 14, and “Outputs” on page 17.
5. Apply power to the unit. See “Power up and Initial Checkout,” page 19.
Grounding
An earth ground spade lug (0.187") is provided on the circuit board of the IO-16-485 (and NPB-PWR-UN) for
connection to earth ground. For maximum protection from electrostatic discharge or other forms of EMI,
connect each device’s earth ground using a #16 AWG or larger wire. Keep these wires as short as possible.
See Figure 3 for the location of the earth grounding wire for both the IO-16-485 and NPB-PWR-UN.
Figure 3 Earth ground connection required to each IO-16-485 module as well as NPB-PWR-UN (if using).
Note Connect any remote IO-16-485 modules to a nearby earth ground in the same manner.
Earth Ground
NPB-PWR-UN
(if used for power)
One or more
IO-16-485 modules

Wiring Details Power from JACE 6-Position Connector
Remote I/O Module (IO-16-485) Mounting and Wiring Instructions
Part Number 11156, Rev 1.3 Updated:August 20, 2014 11
Power from JACE 6-Position Connector
(Not an option for JACE-2/6 series controllers) If powering one or more IO-16-485 modules from a JACE with
a 6-position “Powered RS-485” connector, the 15Vdc and 12V backup battery (BB) is typically routed to the
modules via a 3-conductor cable. The remaining 3 positions are used for RS-485 communications between the
JACE and the IO modules, using a separate shielded twisted pair cable. See Figure 5.
Notes • If the JACE is not connected to a (optional, external) sealed lead-acid battery, the “BB” wire is not
required. This permits use of a single pair cable, versus a 3-conductor cable.
• For power budgeting purposes, estimate each IO-16-485 module to consume 2W nominal (125mW
@ 15V). Typical current will be less— as this estimate factors in all four relays being pulled in.
• Do not apply power (plug in the 6-position connector at the JACE) until all other wiring is
completed. See “Power up and Initial Checkout,” page 19.
Figure 4 IO-16-485 modules powered by JACE with 6-position “Pwr/485” connector (RS-485 wiring also shown).
In some cases, some number of IO-16-485 modules may be powered this way (from JACE), while others may
be powered locally using either an NPB-PWR-UN power supply module or a third-party 12–15Vdc power
supply. This may be advisable when IO modules are located long distances from the JACE, to avoid excessive
voltage drops due to wiring resistances. See the following sections:
• “Power from local NPB-PWR-UN module,” page 12
• “Power from third party 12–15Vdc power supply,” page 13
RS-485 -
RS-485 +
485 GND
PS -
PS +
BB
BB
PS
-
PS
+
485
-
485
+
485
S
IO-16-485 IO-16-485
JACE with 6-Position
“Powered RS-485”
Connector
–
+
S
–
+
S
–
+
S
PS–
PS+
BB
PS–
PS+
BB
PS–
PS+
BB
Connect RS-485 Shield wire to ground at
one end only.
RS-485 communications must be “daisy-chained” to remote IO
modules using a separate shielded twisted-pair cable.
Power Supply (15V) and 12V Backup Battery is routed to remote
IO modules using a 3-conductor cable.
Use the shortest wiring route possible for power wiring—star,
tee, bus, and loop topologies are all permissible.
NOTE:The“BB” wireisneeded only iftheJACE hasanexternal,
connected, sealed lead-acid backup battery.
To more
IO-16-485

Remote I/O Module (IO-16-485) Mounting and Wiring Instructions
Updated: August 20, 2014 Part Number 11156, Rev 1.3
Wiring Details
Power from local NPB-PWR-UN module
12
Power from local NPB-PWR-UN module
If powering IO-16-485 modules from a directly-attached AC power supply (NPB-PWR-UN module), wire the
AC circuit to the NPB-PWR-UN’s 2-position terminals (must remove cover). See Figure 5, left.
Warning • A 120Vac or 240Vac circuit powers the NPB-PWR-UN. Disconnect power to this circuit
before installation to prevent electrical shock of equipment damage.
• Make all connections in accordance with national and local electrical codes. Use copper
conductors only.
• Do not exceed the 30W capacity of NPB-PWR-UN by the powered devices.
Notes • For power budgeting purposes, estimate each IO-16-485 module to consume 2W nominal (125mW
@ 15V). Typical current will be less— as this estimate factors in all four relays being pulled in.
• For other wiring on the 6-position end connector, see “RS-485 Communications,” page 14.
• Do not apply power (energize the NPB-PWR-UN) until all other wiring is completed. See “Power
up and Initial Checkout,” page 19.
Figure 5 NPB-PWR-UN power supply module used to power IO-16-485 modules.
If the NPB-PWR-UN powers additional IO-16-485 modules (not attached in same assembly), wire a single pair
cable between assemblies, connecting PS– to PS–, and PS+ to PS+ in a “shortest route” fashion. See Figure 5,
right.
Earth Ground
NPB-PWR-UN
with cover removed
LN
120 or 240Vac
50–60 Hz
Single Phase
Line
Neutral PS–
PS+
PS–
PS+
One or more
IO-16-485
NOTES: Not shown is RS-485 Communications wiring, on
the bottom 3 positions of the 6-position connector plugs.
Here, terminal “BB” is not used, and may be left unwired.
One or more
IO-16-485

Wiring Details Power from third party 12–15Vdc power supply
Remote I/O Module (IO-16-485) Mounting and Wiring Instructions
Part Number 11156, Rev 1.3 Updated:August 20, 2014 13
Power from third party 12–15Vdc power supply
IO-16-485 modules can be powered by a third-party, 12V–15Vdc power supply, as an alternative to using a
NPB-PWR-UN power supply module. A “battery backed” power supply is recommended. This provides power
to the IO module(s) during AC power loss scenarios.
Figure 6 shows wiring for two assemblies of IO-16-485 modules powered by a battery-backed power supply.
Notes • For power budgeting purposes, estimate each IO-16-485 module to consume 2W nominal (125mW
@ 15V). Typical current will be less— as this estimate factors in all four relays being pulled in.
• For other wiring on the 6-position end connector, see “RS-485 Communications,” page 14.
• Do not apply power (energize the power supply) until all other wiring is completed. See “Power up
and Initial Checkout,” page 19.
Figure 6 Third-party 12Vdc, battery backed, power supply powering IO-16-485 modules.
Notes • Power must be regulated to within ± 4%.
• Power supply models furnishing 12Vdc output are the most commonly available.
• Only remote IO-16-485 modules can be powered by a 12Vdc power supply—the JACE controller
requires 15Vdc. Depending on JACE model, this 15Vdc may be furnished by an integral power
supply, or from an external power supply module, such as the NPB-PWR-UN. See the appropriate
JACE (model) Mounting & Wiring Guide document for details.
–+
IO-16-485 IO-16-485
Battery Battery
AC Line
Source
Power
DC
Voltage
Output
PS–
PS+
NOTES: Not shown is RS-485 Communications wiring, on
the bottom 3 positions of the 6-position connector plugs.
Here, terminal “BB” is not used, and may be left unwired.
PS–
PS+
Single pair cable from power supply enclosure
to IO-16-485 enclosure (PS-, PS+).
Battery-backed
12-15Vdc Power Supply
One or more
IO-16-485

Remote I/O Module (IO-16-485) Mounting and Wiring Instructions
Updated: August 20, 2014 Part Number 11156, Rev 1.3
Wiring Details
RS-485 Communications
14
RS-485 Communications
RS-485 communications from the JACE to each IO-16-485 module (or assembly of modules) requires a
continuous “daisy-chain” wiring topology using a shielded, twisted-pair cable. Wire between IO-16-485
assemblies using the 6-position end connectors. At the JACE, wire to either its 3-position RS-485 connector, or
if equipped, to its 6-position “Pwr/485” connector.
Use shielded 18-22AWG wiring (refer to the TIA/EIA-485 standard). Wire in a continuous multidrop fashion,
meaning “plus to plus,” “minus to minus”, and “shield to shield.” Connect the shield to earth ground at one end
only, such as at the JACE. See Figure 7.
Figure 7 RS-485 wiring from the JACE to one or more IO-16-485 modules uses a “daisy-chain” connection.
Inputs
Each of the 8 universal inputs (UI) can support any one of the following:
• Type-3 10K ohm Thermistor, page 15 (also see Caution on page 15)
• Resistive 0—100K ohms, page 15
• 0–10 Vdc, page 15
• 4–20 mA, page 16
• Binary Input, page 16
IO-16-485 IO-16-485
JACE RS-485 Port, either
onthe 6-position “Pwr/485”
connector or a separate
3-position RS-485 port.
–
+
s
–+s–+s–+s
–
+
s
–
+
s
or
One or more
IO-16-485
Connect RS-485
shield wire to ground
at one end only.
Terminals on the
6-position connector
plugs used for RS-485
between IO-16-485
assemblies.
Shielded,
twisted pair
cabling
JACE-2 / JACE-3E / JACE-6 / JACE-6E
(JACE-2/3E/6/6E) series

Wiring Details Inputs
Remote I/O Module (IO-16-485) Mounting and Wiring Instructions
Part Number 11156, Rev 1.3 Updated:August 20, 2014 15
Thermistor
Inputs support 10K Thermistor temperature sensors. Input accuracy is in the range of ±1% of span. By default,
conversion is for a standard Type 3 thermistor sensor, with a sensor range of -10° to 135°F (23.3° to 57.2°C).
Using a conversion type of “Tabular Thermistor,” you can specify a different thermistor response curve, by
importing a thermistor curve .xml file. Currently, the kitIo module contains an xml folder with thermistor curves
for a various thermistor temperature sensors. You can also edit and export (for reuse) customized thermistor
curve xml files. See the NiagaraAX NRIO Guide for details.
Figure 8 shows the wiring diagram.
Figure 8 Thermistor wiring.
Resistive 0—100K ohms
Inputs can read a resistive signal within a range from 0 to 100,000 ohms. Wiring is the same as shown for a
Thermistor temperature sensor (Figure 8).
Resistive signals require a ResistiveInputPoint.
Caution UI inputs provide optimum resistive-to-temperature resolution in the 10K ohm range. For a sensor
with a range far from 10K ohms (such as a 100-ohm or 1000-ohm sensor), resolution is so poor as
to be unusable!To successfully use such a sensor, install a transmitter that produces a Vdc or mA
signal, and then wire the transmitter to the UI according to the 0–10 Vdc or 4–20 mA instructions.
0–10 Vdc
Inputs support self-powered 0–10 Vdc sensors. Input impedance is greater than 5K ohms. 0–10 volt accuracy is
±2% of span, without user calibration. Figure 9 shows the wiring diagram for a 0–10 Vdc sensor.
0–10 Vdc sensors require a VoltageInputPoint.
Figure 9 0–10 Vdc wiring.
Shielded, Twisted Cable,
61m (200 ft) maximum Stud in enclosure
Shield
10K Thermistor
UI1 0V UI2 UI3 0V UI4
Use point: ThermistorInputPoint
Cut and tape shield wire back
at Thermistor.
+
–
Shielded,TwistedCable,
61m (200 ft) maximum Stud in enclosure
Shield
0—10Vdc Sensor
Range: 0–10 Vdc
Input Impedance > 5K ohms
0—10
Vdc
(self-powered sensor)
UI1 0V UI2 UI3 0V UI4
Use point: VoltageInputPoint
Conversion: Linear
Cut and tape shield
wire back at sensor.

Remote I/O Module (IO-16-485) Mounting and Wiring Instructions
Updated: August 20, 2014 Part Number 11156, Rev 1.3
Wiring Details
Inputs
16
4–20 mA
Inputs support self-powered 4–20 mA sensors. Input accuracy is ±2% of span, without user calibration.
Figure 10 shows the wiring diagram, which requires a 499 ohm resistor wired across the input terminals.
4–20 mA sensors also require the VoltageInputPoint.
Figure 10 4 to 20 mA wiring.
Caution When using an externally powered 4–20 mA sensor, be sure to de-energize its power supply
before making or changing any wiring connections to the IO-16-485 module. This is in addition to
removing power from the IO-16-485 module.
It is important to not apply external power to the UI inputs without the 499 ohm resistor in place.
Otherwise, even a momentary application of power (say, 24Vdc) to the UI terminals without the
resistor may damage circuitry on the IO-16-485. Only after completing all input wiring should you
restore power to such external power supplies.
Binary Input
Inputs support both pulse contacts and normal dry (equipment status) contacts.
• Pulse contacts may have a change-of-state (COS) frequency of up to 20 Hz with a 50% duty cycle.
Note: Minimum dwell time must be > 25ms. (Contacts must remain open at least 25ms and be closed at
least 25ms.)
• Standard dry contacts must have a 1 Hz. (or less) COS frequency, with minimum dwell time > 500ms.
(Contacts must remain open at least 500ms and be closed at least 500ms.)
Both types of dry contacts support 3.3 Vdc open circuits or 330 µA short-circuit current. For a pulse contact,
use the CounterInputPoint in the station database. For other dry contacts, use the BooleanInputPoint.
Figure 11 shows the wiring diagram (which is identical for both uses), but with different types of Nrio software
points used for either application.
i
+
–
Shielded,TwistedCable,
61m (200 ft) maximum Stud in enclosure
Shield
4—20 mA Sensor
Range: 0—20 mA
(self-powered sensor)
UI1 0V UI2 UI3 0V UI4
Use point: VoltageInputPoint
Conversion: 500 Ohm Shunt
secondary conversion: Linear
Cut and tape shield
wire back at sensor.
499 Ohm resistor
(supplied with unit)

Wiring Details Outputs
Remote I/O Module (IO-16-485) Mounting and Wiring Instructions
Part Number 11156, Rev 1.3 Updated: August 20, 2014 17
Figure 11 Binary input wiring.
Outputs
A IO-16-485 module has four (4) digital relay outputs and four (4) 0–10 volt analog outputs.
Relay Outputs
Each relay output is rated at 24 Vac or Vdc at 0.5A. Relay outputs have MOV (metal oxide varistor) suppressors
to support inductive-type loads such as heavy-duty relay coils.
Warning Relays are not rated for AC mains (line level) powered loads (instead, 24V maximum).
Use an external 24V transformer or a 24Vdc power supply to power loads.
Use a RelayOutputWritable in the station for each output. Figure 12 on page 18 shows an example wiring
diagram.
Shielded,TwistedCable,
61m (200 ft) maximum Stud in enclosure
Shield
Pulse
Use point: CounterInputPoint
Range: Up to 20 Hz,
50% Duty Cycle
Minimum dwell time
> 25ms
Shielded,TwistedCable,
61m (200 ft) maximum Stud in enclosure
Shield
Dry Contacts
Use point: BooleanInputPoint
UI1 0V UI2 UI3 0V UI4
UI1 0V UI2 UI3 0V UI4
Cut and tape shield
wire back at sensor.
Cut and tape shield
wire back at sensor.

Remote I/O Module (IO-16-485) Mounting and Wiring Instructions
Updated: August 20, 2014 Part Number 11156, Rev 1.3
Wiring Details
Outputs
18
Figure 12 Relay output wiring diagram.
Note that the two commonDO terminals (1C2, 3C4) are isolated from each other. This is useful if controlled loads
are powered from different circuits.
An LED status indicator for each relay (D1—D4) is located on the board (Figure 2 on page 9), and also visible
through the cover. Under normal operation, each digital status LED indicates activity as follows:
• Off—relay open / no current flows.
• On—relay closed / load current flows.
Therefore, an On status indicates that the load is powered.
Analog Outputs
Analog outputs (AO) are referenced by the terminals labeled Anand 0V (ground). Each AO can supply a
maximum of 4 mA over the entire 0 to 10Vdc range. For this 0–10V full range, the minimum input impedance
of a device controlled by the AO must be greater than 2500 ohms.
If the device’s input impedance is less than 2500 ohms, the 4 mA “max. current” limits the voltage output range.
For example, if a device with a 1000 ohm input impedance, the AO would work as a 0–4Vdc analog output.
Figure 13 shows typical wiring for an AO. For each AO, use a VoltageOutputWritable in the station database.
Figure 13 Analog output wiring diagram.
24Vac
Loads
2
1
3
4
24Vac
D1 D4
D2 D33C4
1C2
24Vdc
+
–
Use point: RelayOutputWritable
24Vac
Transformer
(see previous
Warning)
AC
Mains
(Line)
24Vdc Power
Supply
OR
Input (+)
Common (–)
0—10Vdc device
Inputimpedance
is greater than
2500 ohms
AO1 0V AO2 AO3 0V AO4
Use point: VoltageOutputWritable
Shielded, Twisted Cable,
61m (200 ft) maximum

Nrio16Module (Software) Representation Outputs
Remote I/O Module (IO-16-485) Mounting and Wiring Instructions
Part Number 11156, Rev 1.3 Updated: August 20, 2014 19
Nrio16Module (Software) Representation
In the NiagaraAX station interface to the JACE and IO-16-485 module, the module’s I/O is modeled in the
station’s NrioNetwork (copied from the nrio palette), under a child Nrio16Module “device level” component.
This Nrio16Module has a default name of “io16_n”.
Note After a remote I/O module is discovered and added to the station under this NrioNetwork (each as one
as an Nrio16Module), the serial status LEDs for the JACE’s RS-485 port continually flash, reflecting
polling activity. At this time, the “STATUS” LED on that IO-16-485 module lights solid green.
Any time a IO-16-485 module’s status LED is not lit solid green, all of its outputs are in “failsafe” state
(all relay outputs OFF, and all AOs are at a 0-volt level).
Blinking of a remote I/O module’s status LED occurs for two reasons, shown at different rates:
• Rapid flash (low duty cycle), meaning the unit is unconfigured. Discovery and addition to the
station database is required.
• Equal time on and off (50% duty cycle), meaning the unit is configured, but currently offline with
the JACE controller. Check RS-485 wiring between the controller and remote I/O module.
Each input or output used requires a special Niagara Remote Input/Output (Nrio) point to be added in the station
database. These components act as the station interface to the physical I/O points. The Nrio points you need for
each input or output type are noted in previous wiring sections in boldface.
For Nrio software details, see the NiagaraAX NRIO Guide in Workbench online Help, or that document in PDF.
Power up and Initial Checkout
Step 1 Apply power to the IO-16-485 (depending on power source, this may mean plugging in a 6-position
end connector, energizing an NPB-PWR-UN power supply module, or powering on the connected
JACE or third-party 12–15Vdc power supply).
The IO-16-485 module’s board status LED (Figure 2 on page 9) will initially be blinking.
Step 2 Using Workbench, open a station connection to theJACE.If notalready present, addanNrioNetwork
component to the station’s Drivers Container.
Step 3 Configure the NrioNetwork’s “Port Name” property to match the JACE’s RS-485 port COM
assignment (for example, COM2), and set its “Trunk” property to a unique number Nrio-wide (say, 2).
Step 4 From the NrioNetwork’s Nrio Device Manager view, perform a Discover.
Each discovered remote I/O module will be listed in the top “Discovered” pane in the view, with each
IO-16-485 appearing as an “Io16” device type.
Note To associate a discovered device to a specific IO-16-485, issue a right-click “Wink Device”
action—this cycles a relay output on that IO-16-485 several times, which you can hear or see if
nearby. This action is available both before and after a discovered device is added to the station.
Step 5 Add each discovered IO-16-485 to the station, renaming to reflect its actual location (see Note above).
Each IO module is represented by an Nrio16Module component.
Step 6 Verify that each IO-16-485 module’s board status LED is now lit solid green.

Remote I/O Module (IO-16-485) Mounting and Wiring Instructions
Updated: August 20, 2014 Part Number 11156, Rev 1.3
Replacement Parts
Standard Replacement Parts
20
Note If an Nrio16Module is selected in the Nrio Device Manager view, and the Upgrade Firmware
button is active, it is recommended that you upgrade its firmware. After selecting this, do not
interrupt power to the IO-16-485 and JACE, or the communications between them, until
the firmware upgrade job finishes. Typically, this takes less than 2 minutes, with job competition
signaled in the Workbench view.
Step 7 You can now discover, add, and configure IO points under each Nrio16Module’s Points device
extension. For more details about Nrio components, refer to the NiagaraAX NRIO Guide, also
available in Workbench online Help (doc Nrio).
Replacement Parts
Servicing the IO-16-485 may call for replacement parts. There are two categories of parts:
• Standard Replacement Parts
• New Replacement Units
Standard Replacement Parts
Standard replacement parts are listed in Table 4 and can be ordered from stock without restriction. Standard
replacement parts cannot be returned for credit and should be disposed of in an appropriate manner.
New Replacement Units
To replace a faulty unit, order and install a new IO-16-485 accessory module—please note that JACE
accessories do not have special “field replacement units,” or FRUs, with separate part numbers.
If the faulty IO-16-485 is still in warranty, you can receive credit by returning it to Tridium. Be sure to contact
Tridium for a return authorization (RA) number before shipping an item for return credit. See “Returning a
Defective Unit,” page 22, for more details.
Note Before ordering a new IO-16-485, it is strongly recommended that you contact your normal technical
support resource to eliminate the possibility of a software issue or mis-configuration problem.
Table 4 Standard IO-16-485 replacement parts.
Part Number Description
11453 Hardware bag for IO-16-485 module. Includes four (4) pin-mount, 6-position screw terminal connectors for
I/O points, one (1) end-mount 6-position screw terminal plug for power and RS-485 communications, eight
(8) 499 ohm, 1%, 0.6W resistors, and one grounding wire with quick-disconnect 0.187” female connector.