KMC BAC-10000 manual Input, Sensor, and Value Issues, Input Values Are Outside the Expected Range

Page 19

Input, Sensor, and Value Issues

Input Values Are Outside the Expected Range

•Check that ALL the input pull-up resistor switches are fully latched in the correct positions. See the Connections and Wiring section of the relevant BAC-10000 Series Installation Guide. A single incorrect switch position may affect mul- tiple inputs. All input switches must be latched in either 10K Ohm or 0–12 VDC positions even if no input is connected! Input switch pairs (3-4,5-6, and 7-8) must never have both switches set to the left or both to the right—if switch 3 is set to the left, for example, 4 must be set to the right (or vice versa).

•Check that the correct input type is selected on the Inputs screen. A Type III thermistor is the default on IN2 through IN4. See (Advanced) Inputs on page 8.

•Check input wiring. See Wiring Issues on page 21.

•Check connected sensors.

•Using BACstage or TotalControl, check that the input is not configured as “Out Of Service.”

•Restore the FlexStat to factory settings (see Reset- ting the FlexStat on page 14) and reconfigure.

Motion/Occupancy Sensor Does Not Work

•The initial firmware (R.1.0.0.0 and earlier) did not support this sensor within the built-in selectable programs. Custom programming was required— see the BAC-10000 Series Application Guide, P/N 913-019-03. Upgrade to the latest firmware for built-in support.

•After an initial power-up or restart, the motion/ occupancy sensor requires about 30 seconds before it will begin responding to motion.

•The motion/occupancy sensor initiates override only during “off” times in the schedule. See Schedules on page 12.

•Check that the motion sensor is enabled and detects motion. See (Advanced) Motion Sensor on page 8.

•Using BACstage or TotalControl, check that BI6 (occ status) is not configured as “Out Of Service.”

•The FlexStat must be installed where there is a clear view of typical traffic area (reliable range is out to about 33 feet). Remove or move obstacles. Reinstall the FlexStat in a more optimal location if necessary.

•Connect remote motion sensors to an input (requires custom programming).

•For more information on detection performance, patterns, configuration, programming, and other issues, see the Motion/Occupancy Sensor section in the BAC-10000 Series Application Guide.

Temperature Reading Is Incorrect

•After applying power for the first time (or after an outage), allow the FlexStat to self-calibrate a few minutes before verifying temperature read- ing.

•If the discrepancy is small, adjust the calibration offset—see (Advanced) Inputs on page 8.

•Check that the thermistor is centered in its hole at the bottom of the case and has an air gap around it. Also check that its leads are not pinched, shorted, or broken and that the tape holding down the leads is not loose. (Some early models with humidity sensors did not have the addi- tional thermistor—temperature was derived from the same chip that measured humidity.)

•Using BACstage or TotalControl, check that AI1 (space temp.) is not configured as “Out Of Service.”

•Check that the FlexStat is not mounted on an outside wall, is not exposed to heat sources or sunlight, is not exposed to drafts from windows or air vents, or is not blocked from normal air circulation.

•See also Input Values Are Outside the Expected Range on page 19.

Temperature Setpoint Is Not Maintained

•Select Occupied mode from the Home Menu— see H/C, Fan, Occupancy, and Override on page 3.

•Override the fan to On from the Home Menu— see H/C, Fan, Occupancy, and Override on page 3.

•Check that the appropriate application is se- lected—see (Advanced) Application Options on page 5.

•Check that room temperature is being sensed correctly—see Temperature Reading Is Incorrect on page 19.

BAC-10000 Series

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Operation Guide, Rev. J

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Contents Operation Guide Overview Applications and Installation Operation Basic Main Menu Overview Configuration Initial SetupAbout the FlexStat Advanced Application Options Advanced MenuAdvanced CB Control Basic Programs Sensor SetupStaging Setup Valve SetupAdvanced Date/Time Advanced BACnet CommunicationsAdvanced Inputs Advanced Motion Sensor Advanced BACnet Device PropertiesAdvanced Temp. Setpoint Limits Menu Items Access Levels Advanced Security Levels and PasswordsAdvanced Test Advanced Trend LogsDate/Time AlarmsSchedules Setpoints System SetupTrend Viewer Types of Reset Resetting the FlexStatWarm and Cold Starts Restore Factory BACnet MS/TP Network Communication Network ConnectionPC Data Port Connection Alarm Issues TroubleshootingCommunication Issues Custom Programming and Web Issues Cover and Display IssuesInput Values Are Outside the Expected Range Input, Sensor, and Value IssuesTemperature Reading Is Incorrect Temperature Setpoint Is Not MaintainedRelay Internal Does Not Work Output, Fan, and Relay IssuesAnalog Output Does Not Work Fan Does Not RunRelay External Does Not Work Wiring IssuesProgramming Custom MaintenanceFirmware Upgrade AccessoriesImportant Notices SupportAcronyms and Abbreviations ReferenceFor this document are included on this Definitions of TermsIndex SymbolsBAC-10000 Series KMC Controls, Inc

BAC-10000 specifications

The KMC BAC-10000 is a cutting-edge building automation controller designed to offer exceptional performance in monitoring and controlling HVAC systems, lighting, and various other building systems. This advanced controller is engineered to enhance energy efficiency, improve occupant comfort, and provide streamlined building management capabilities.

One of the main features of the KMC BAC-10000 is its versatility. It supports a wide variety of communication protocols, including BACnet, Modbus, and LonWorks. This multi-protocol capability allows for seamless integration with existing building systems, ensuring that users can easily incorporate the BAC-10000 into their building management setup without the need for additional hardware or extensive modification.

The controller is equipped with an intuitive user interface that simplifies the management of building systems. It includes a graphical display that provides real-time data, enabling operators to monitor system performance, adjust settings, and troubleshoot issues with ease. This user-friendly design promotes efficient operation and reduces the learning curve for new users.

In terms of technical specifications, the BAC-10000 boasts a powerful microprocessor and an extensive range of I/O points, allowing it to handle large and complex building automation tasks. With support for both digital and analog inputs and outputs, users can customize their setup to meet specific operational requirements.

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