19Table 12 — EMM Board Inputs and OutputsLocal Equipment NetworkInformation is transmitted between modules via a 3-wire com-munication bus or LEN.Board AddressesAll boards (except the Carrier Controller display and the EnergyManagement Module) have DIP switches to set the address.Control Module CommunicationRED LEDProper operation of the control boards can be visually checkedby looking at the red status LEDs (Light-Emitting Diodes).When operating correctly, the red status LEDs will blink inunison at a rate of once every 2 seconds. If the red LEDs arenot blinking in unison, verify that correct power is being sup-plied to all modules and that all communication wiring is con-nected securely. Confirm current version of software installedon SmartView panel by navigating to Control IdentificationMenu (Main Menu Configuration Menu HMI Config-uration Menu Control Identification Menu SoftwarePart Number). If a newer version of the software exists, con-tact your Carrier service representative service to reload currentsoftware. If the problem still persists, replace the Carrier Con-troller module. A red LED that is lit continuously or blinking ata rate of once per second or faster indicates that the boardshould be replaced.GREEN LEDAll boards have a green LEN LED which should be blinkingwhenever power is on. If the LEDs are not blinking as de-scribed check LEN connections for potential communicationerrors at the board connectors. A 3-wire bus accomplishescommunication between modules. These 3 wires run in parallelfrom module to module. They connect to J9 on EMM andAUX boards, and to J12 or J13 on SIOBs. A valid unit config-uration must be in the Carrier Controller module for properLEN communication.Carrier Comfort Network ® InterfaceAll 30XV units can be connected to the CCN, if desired. Thecommunication bus wiring is RS-485 Communication Wiring,CM or CMP rated consisting of a shielded, 3 conductor cablewith drain wire and is field supplied and installed. The systemelements are connected to the communication bus in a daisychain arrangement. The positive pin of each system elementcommunication connector must be wired to the positive pins ofthe system elements on either side of it. The negative and signalground pins of each system element must also be wired in thesame manner. Wiring connections for CCN should be made atTB3. See Fig. 22. For noise consideration, communication wir-ing must be separate and not run in parallel with other wiring.NOTE: Conductors and drain wire must be 20 AWG (AmericanWire Gage) minimum stranded, tinned copper. Individual con-ductors must be insulated with PVC (Polyvinyl Chloride), PVC/nylon, vinyl, Teflon1, or polyethylene. An aluminum/polyester100% foil shield and an outer jacket of PVC, PVC/nylon,chrome vinyl, or Teflon with a minimum operating temperaturerange of –20°C to 60°C is required. High temperature applica-tions may require a higher temperature range. Plenum applica-tions will require plenum rated cable. Cable voltage require-ments must match the application.CHANNEL IN/OUTTYPEBOARDCONNECTOR CCN POINT POINTDESCRIPTIONI/O POINTNAMEINPUT/OUTPUTTYPECH 01 AIJ6— — AI-01 5/10K ThermistorCH 02 AI SPACETMP Space temperature AI-02 10K ThermistorCH 03 AI — — AI-03 5/10K ThermistorCH 04 AI — — AI-04 5/10K ThermistorCH 05 AI J7A SP_RESET Setpoint reset AI-06 0-5VCH 06 AI J7B LIM_ANAL Capacity limit AI-07 0-5VCH 07 AO J8 CAP_T % Total capacity running AO-01 0-10 VdcCH 08 DI J4, CH8 OCC_OVSW Occupancy override DI-01 —CH 09 DI J4, CH9 LIM_SW2 Demand limit SW2 DI-02 —CH 10 DI J4, CH10 REM_LOCK Remote lockout switch DI-03 —CH 11a DI J4, CH11A ICE_SW Ice done DI-04 —CH 11b DI J4, CH11B — — DI-05 —CH 12 DI J5, CH12 — — DI-06 —CH 13 DI J5, CH13 — — DI-07 —CH 14 DI J5, CH14 — — DI-08 —CH 15 DI J5, CH15 — — DI-09 —CH 16 DO J2A CP_A Compressor A run status DO-01 TriacCH 17 DO J2A CP_B Compressor B run status DO-02 TriacCH 18 DO J2A — — — —CH 19 DO J2A — — — —CH 20 DO J2B — — — —CH 21 DO J2B — — — —CH 22 DO J2B — — — —CH 23 DO J2B — — — —CH 24 DO J3 SHUTDOWN Shutdown relay DO-09 RelayCH 25 DO J3 ALERT Alert relay DO-10 Relay1. Teflon is a registered trademark of DuPont.