LX Series Input/Output (I/O) Extension Modules Installation Instructions1 Refer to the QuickLIT Web site for the most up-to-date version of this document.ApplicationThe LX Series Input/Output (I/O) Extension Module product line is compatible with the LX-PRG600-11 and LX-PRG610-11 Series controllers. These devices are microprocessor-based and designed to control various HVAC equipment, such as roof top units, large air handling units, and central plant applications, including chillers and boilers.The LX PRG600 Series Controllers are built on a platform compatible with the LX Series I/O Extension Modules, but have different numbers of inputs and outputs. Each LX Series I/O Extension Module also has different numbers of digital outputs or universal outputs. The LX Series I/O Extension Modules provide additional hardware point capacity for the LX PRG6x0 Series controllers. Follow these recommendations for proper installation and operation of each I/O Extension Module:•Inspect the I/O Extension Module for shipping damages. Do not install damaged I/O Extension Module.•Keep the I/O Extension Module at room temperature for at least 24 hours prior to installation to allow any condensation that may have accumulated during shipping to evaporate.•If the I/O Extension Module is used in a manner not specified by Johnson Controls, the functionality and the protection provided by the I/O Extension Module may become impaired.•Avoid areas where corroding, deteriorating, or explosive vapors, fumes, or glass may be present.•Do not drop the I/O Extension Module or subject it to physical shock.Note:The I/O Extension Module’s plastic enclosure has a back plate that is separate from the front plate allowing the back plates to be shipped directly to the installation site while all the engineering is done elsewhere.North American Emissions ComplianceCanadaUnited States IMPORTANT:Prevent any static electric discharge to the controller. Static discharge can damage the controller and void the warranties.Industry Canada StatementThe term IC before the certification/registration number only signifies that the Industry Canada technical specifications were met.Le terme « IC » précédant le numéro d'accréditation/inscription signifie simplement que le produit est conforme aux spécifications techniques d'Industry Canada.This equipment has been tested and found to comply with the limits for a Class A digital device pursuant to Part15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference when this equipment is operated in a commercial environment. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instruction manual, may cause harmful interference to radio communications. Operation of this equipment in a residential area may cause harmful interference, in which case the users will be required to correct the interference at their own expense.LX Series Input/Output (I/O) Extension ModulesInstallation InstructionsLX-IOE400-0, LX-IOE410-0, LX-IOE420-0Code No. LIT-12011858Issued April 24, 2014Supersedes March 12, 2013LX Series Input/Output (I/O) Extension Modules Installation Instructions2InstallationObserve these guidelines when installing an I/O Extension Module:•Transport the I/O Extension Module in the original container to minimize vibration and shock damage.•Verify that all parts shipped with the I/O Extension Module.•Do not drop the I/O Extension Module or subject it to physical shock.Location Considerations•Allow for proper clearance around the I/O Extension Module’s enclosure, wiring terminals, and address switch to provide easy access for hardware configuration and maintenance. •Orient I/O Extension Module with the ventilation slots and power supply/output terminal block connector towards the top to permit proper heat dissipation.•Do not mount the I/O Extension Module on surfaces prone to vibration, such as duct work, or in areas where electromagnetic emissions from other devices or wiring can interfere with controller communication.•Ensure proper ventilation of each I/O Extension Module and avoid areas where corroding, deteriorating, or explosive vapors, fumes, or gases may be present.MountingYou can mount the I/O Extension Module on a DIN rail, on a wall, or in a panel. The I/O Extension Module is equipped with two 0.25 x 0.165 in. (6.35 x 4.191 mm) mounting holes.DIN RailTo mount the module on a DIN rail:1.Ensure the DIN rail is properly mounted on the wall.2.Clip the module onto the DIN rail.Wall MountTo mount the module on a wall:1.Press the side clips to separate the module’s front and back plates.2.Use the holes on the back plate to mark the wall location.3.Drill the holes.4.Clean the surface and mount the module using the appropriate screws.Figure 1: LX Series I/O Extension Module Dimensions, mm (in.)LX Series Input/Output (I/O) Extension Modules Installation Instructions 3Typical Air Handling Unit Application Wiring DiagramFigure2 shows a typical Air Handling Unit (AHU) application wiring diagram.WiringFollow these wiring recommendations:•Remove the front plate from the back plate to facilitate the wiring process. Use a small flat screwdriver to tighten the terminal connector screws once the wires are inserted.•Keep power cables apart from other types of wiring to avoid ambient noise transmission to other wires (for example, for power, 3-wire voltage, and current inputs and outputs).•Use wires or flat cables ranging from 22 to 14 AWG (0.644 to 1.630 mm diameter) per pole. Power cables must remain between 18 and 14 AWG (1.024 to 1.630 mm) diameter.•Do not connect the universal inputs, analog/digital outputs, or common terminals to earth or chassis ground unless otherwise stated.Figure 2: Typical Power and Network Connections for an Air Handling Unit Application!CAUTION: Risk of Electric Shock.Disconnect the power supply before making electrical connections to avoid electric shock.MISE EN GARDE : Risque de décharge électrique.Débrancher l'alimentation avant de réaliser tout raccordement électrique afin d'éviter tout risque de décharge électrique.LX Series Input/Output (I/O) Extension Modules Installation Instructions4•Keep all wires away from high speed data transmission cables (for example, Ethernet cable).•Keep input and output wires in conduits, trays, or close to the building frame whenever possible.Power WiringDevice power requirements for the LX Series I/O Extension Module is 24 VAC +15%, Class 2.We recommend wiring only one controller per 24 VAC transformer. When only one transformer is available, determine the maximum number of controllers that can be supplied using the following method for calculating the required power transformer capacity:1.Add up the maximum power consumption of all controllers, including external loads, and multiply this sum by 1.3.2.If the resulting number is higher than 100 VA, use multiple transformers Use an external fuse on the 24 VAC/DC side (secondary side) of the transformer to protect all controllers against power link spikes (Figure3 and Figure4). Input WiringEach I/O Extension Module has physical connections for inputs that are software configurable from within the device’s LX Graphical Programming Interface Wizard. Each input can be configured for digital, resistive, current, or voltage signals. You must configure the input types properly in the GPI Wizard to ensure proper input readings. The physical connections for inputs are marked Ulx. Note:For a wire less than 75 feet (23 m) long, use a shielded or unshielded 18 AWG wire.Note:For a wire up to 200 feet (61 m) long, a shielded 18 AWG wire is recommended.Note:The wire should be shielded on the I/O Extension Module side, and the shield length should be kept as short as possible.IMPORTANT:This is a Class 2 product. Use a Class 2 transformer only (rated at 100 VA or less at 24 VAC) to power the controller.IMPORTANT:Maintain consistent polarity when you connect the controllers and devices to the transformer. Figure 3: Power Wiring – ACFigure 4: Power Wiring – DCIMPORTANT:One terminal on the secondary side of the transformer must be connected to the building’s ground. All 24 V COM terminals of all controllers and peripherals throughout the LAN or the subnetwork must be connected to the grounded transformer as shown in Figure3 and Figure4. This ensures that the 24 V COM terminals of all devices connected to any LAN or subnetwork in the building are at the same potential.IMPORTANT:The COM terminals of the controller are internally wired to the 24 V COM terminal of the power supply. Connecting a peripheral or another controller to the same transformer without maintaining polarity between these devices will cause a short circuit.IMPORTANT:A mechanical ground is unacceptable. Do not use a pipe, conduit, or duct work for a ground. The power supply must have a dedicated ground wire that comes from the main electrical supply panel.IMPORTANT:Before you connect input equipment to the extension module, refer to the installation instructions from the equipment manufacturer.LX Series Input/Output (I/O) Extension Modules Installation Instructions 5Wiring Digital InputsUse this input configuration to monitor digital dry contacts, as well as pulsed contacts. Wiring Resistive InputsUse this input configuration to monitor Resistance Temperature Detectors (RTD), thermistors (such as 1,000 ohm RTDs to 10k ohm Type II and Type III thermistors) and potentiometers (such as 10k ohm and 100k ohm). Wiring Current InputsCurrent inputs have a range of 0 to 20 mA. Set the jumper to the 0 to 20mA position for all current inputs. This setting provides the required 249 ohm resistance for the controller’s current inputs. Depending on the transducer power requirements, you may use any of the following input configurations. Use Figure8 for the 2-wire, 0 to 20 mA transducer powered by the controller’s internal 15 VDC power supply. Use the Figure9 configuration for a 2-wire, 0 to 20 mA transducer powered by an external 24 AC/DC power supply. Use the Figure10 configuration for a 3-wire, 0 to 20 mA transducer powered by an external 24 AC/DC power supply. Use the Figure11 configuration for a transducer powered by its own power source. Wiring Voltage InputsVoltage inputs have a range of 0 to 10 VDC or 0 to 5 VDC. Connect the voltage input according to Figure12 if you are using a 3-wire 0 to 10 V or 0 to 5 V transducer. Figure 5: Digital Input – Digital Dry Contact (N.O. and N.C.)Figure 6: Resistive Input – RTD/Thermistor InputFigure 7: Resistive Input – 10k ohm Potentiometer InputFigure 8: Current Input – 2-Wire Transducer Powered by the ControllerFigure 9: Current Input – 2-Wire Transducer, Externally PoweredFigure 10: Current Input – 3-Wire Transducer, Externally PoweredFigure 11: Current Input – Transducer with Its Own Power SourceFigure 12: Voltage Input – 3-Wire TransducerLX Series Input/Output (I/O) Extension Modules Installation Instructions6Connect the voltage input according to Figure13 if the transducer is powered by its own power source. Wiring Pulse InputsThe pulse inputs support a maximum input frequency of 1 Hz (500 ms minimum ON/OFF) or 50 Hz (10 ms minimum ON/OFF). Connect the pulse input according to Figure14 for a pulse meter that can pull down a +5 VDC supply with a 10k ohm pull-up resistor (internal supply type). Output WiringEach extension module has physical connections for universal outputs. These outputs are all software configurable.Output Wiring RecommendationsOutput wiring recommendations include:•For a wire length less than 75 feet (23 m) long, use either a shielded or unshielded 18 AWG wire.•For a wire length up to 200 feet (61 m) long, use a shielded 18 AWG wire.•The shield of the wire should be grounded on the controller side, and the shield length should be kept as short as possible.Wiring Universal Outputs (UOx)You can configure universal outputs to provide a discrete signal of 0 or 12 VDC, a linear signal ranging from 0 to 10 VDC, or a 0 to 20 mA signal. The discrete signal can be used to generate a pulse wave modulation (PWM) signal or a simple two-state signal. These outputs are protected by an auto-reset fuse.Wiring Discrete OutputsIf a 12 VDC relay is being controlled, connect it to a universal output according to Figure15.Wiring Current OutputsThe 0 to 20 mA signal is configurable by jumper (Figure16). Voltage OutputsConnect the 0 to 10 VDC as shown in Figure17. If you are controlling an analog actuator, connect the 0 to 10 VDC output, along with an external 24 VAC power source, to the analog actuator (Figure18).IMPORTANT:Before you connect output equipment to the extension module, refer to the installation instructions from the equipment manufacturer.Figure 13: Voltage Input – Transducer with Its Own Power SourceFigure 14: Internal Supply, 2-wire Pulse MeterFigure 15: Discrete 0 or 12 VDC Universal Output – RelayFigure 16: 0 to 20 mA Universal Output and Jumper ConfigurationFigure 17: Voltage 0 to 10 VDC Universal OutputFigure 18: Voltage 0 to 10 VDC Universal Output – Analog ActuatorLX Series Input/Output (I/O) Extension Modules Installation Instructions 7Subnetwork Communications Wiring with the LX-PRG6x0-xx ControllerLX-IOE400 Series I/O Extension Modules are connected to the Subnet- and Subnet+ terminals of the LX-PRG6x0-xx controllers. For optimal performance, use 24 AWG (0.65 mm) stranded, twisted pair shielded cable. The subnetwork communication wire is polarity sensitive and the only acceptable topology is to daisy-chain the cable from one I/O Extension Module to the next.For more information on subnetworks for the LX-IOE400 Series Extension Modules and LX-PRG6x0-xx controllers, refer to the LX Series Input/Output Extension Modules and Communicating Sensors Subnetwork for LX-VAVCF-11 and LX-PRGxxx-11 Application Note (LIT-12011859).Subnet Bus Shielding Recommendations•When the subnetwork data bus is connected to a following device, twist data bus shields together.•Isolate all shields with electrical tape so there is no exposed metal that can touch ground or other conductors.•Connect the shield of the data bus to the electrical system ground at only one point, usually at one end of the bus as shown in Figure19.As shown in Figure20, Figure21, and Figure22:•The first and last daisy-chained subnetwork device must have its EOL resistors enabled. All other devices must have their EOL resistor disabled.•The I/O Extension Module and the LN-SVSENx-0 share the same subnetwork.About the Subnetwork BusThe LX Free Programmable PRG 600 Series controllers use the Subnetwork bus to support the LX-IOE400 Series Extension Modules through 2-wire shielded cable.The LX-PRG6x0-xx Controllers also use the subnetwork bus to support one or more LN-SVSENx-0 Communicating Sensors using standard structural cabling.Subnetwork Bus Total LengthThe total maximum length of all subnetwork buses, including both the length of the LN-SVSENx-0 Sensors subnetwork bus and the LX-IOE4x0-0 subnetwork bus, is 1,000 ft (300 m). The maximum length of the LN-SVSENx-0 subnetwork bus is 650 ft (200 m). The maximum length of the LX-IOE4x0-0 subnetwork bus is 1,000 ft (300 m). See Figure20.Subnetwork Bus Topology and EOL Terminations with the LX-PRG6x0-xx ControllersWhen the LX-IOE400 Series Extension Modules are installed with LX-PRG6x0-xx controllers, only the EOL terminations of LX-PRG6x0-xx controller and the last I/O Extension Module are set to ON. All other I/O Extension Modules must have their EOL terminations set to OFF. See Figure21.When the LX-IOE400 Series Extension Modules are installed with an LX-PRG6x0-xx controller and with LN-SVSENx-0 sensors, only the EOL terminations on the last I/O Extension Module and the last LN-SVSENx-0 sensor are set to ON. The LX-PRG6x0-xx controller and all other I/O Extension Modules and LN-SVSENx-0 sensors must have their EOL terminations set to OFF. See Figure22. Figure 19: Subnetwork Bus ShieldingLX Series Input/Output (I/O) Extension Modules Installation Instructions8 Figure 20: Subnetwork Bus Overview Showing the LN-SVSENx-0 Subnetwork Bus and the LX-IOE4x0-0 Subnetwork BusFigure 21: Setting the EOL Terminations on the Subnetwork BusLX Series Input/Output (I/O) Extension Modules Installation Instructions 9Figure 22: Setting the EOL Terminations on the LX-IOE4x0-0 Subnetwork Bus When LN-SVSENx-0 Sensors Are UsedNext >