Excel 10 W7752D,E,F,G,J AND W7754K,L,M,P FAN COIL UNIT CONTROLLERS LNS PLUG-INS HONEYWELL EXCEL 5000 OPEN SYSTEM USER GUIDE CONTENTS Introduction .................................................................................................................................................................................. 1 Description of Devices ................................................................................................ 1 Products Covered .............................................
EXCEL 10 FCU CONTROLLER LNS PLUG-INS USER GUIDE PID .................................................................................................................30 Commissioning ...............................................................................................30 ID Number ......................................................................................................30 Step 7. Troubleshooting.............................................................................................
EXCEL 10 FCU CONTROLLER LNS PLUG-INS USER GUIDE INTRODUCTION Description of Devices The wall modules are available in a variety of models incorporating various combinatinos of the following options: The W7752D,E,F,G, and J Controllers and W7754K,L,M,N, and P Controllers are Fan Coil Unit Controllers belonging to the Excel 10 product line.
EXCEL 10 FCU CONTROLLER LNS PLUG-INS USER GUIDE Products Covered Product Names This System Engineering Guide describes how to apply the Excel 10 FCU Controllers and the accessories to typical FCU applications. The specific devices covered include: • W7752D,E,F,G, and J FCU Controllers. • W7754K,L,M,N, and P FCU Controllers. • T7460 Wall Modules. • T7560 Wall Modules.
EXCEL 10 FCU CONTROLLER LNS PLUG-INS USER GUIDE Control Application which incorporates a temperature sensor, setpoint and fan speed controls, and a bypass or override button. Fig. 2 shows a typical FCU ontrol application. Fan coil unit systems in commercial buildings control room temperature through the control of heat and/or cold water valves and fan speed. Electric reheat coils may also be used in the system.
EXCEL 10 FCU CONTROLLER LNS PLUG-INS USER GUIDE Fig. 3. Control sequence diagram Setpoints When the Excel 10 FCU Controller is in the "unoccupied" mode, the remote setpoint knob is ignored, and the configured setpoints for this mode are used instead. Setpoint Knob The Excel 10 FCU Controllers may be hardwired to an Excel 10 wall module equipped with a setpoint knob.
EXCEL 10 FCU CONTROLLER LNS PLUG-INS USER GUIDE Table 1. Example setpoint values based upon default configuration – "absolute middle" setpoint knob (°C) occupancy configured configured setpoint effective cooling effective heating ZEB mode cooling setpoint heating setpoint knob1 setpoint2,3 setpoint2,4 "occupied" 23 21 2 21 22 20 "standby" 25 19 6 21 24 18 "unoccupied" 28 16 12 X 28 NOTES: 1. Sample value shown. Limited by default configuration settings to the range of 12...30°C. 2.
EXCEL 10 FCU CONTROLLER LNS PLUG-INS USER GUIDE Bypass determined by nviManOccCmd (provided it has not been set to OC_NUL). Bypass Mode When the Excel 10 FCU Controller is in the "unoccupied" mode, the Excel 10 wall module's bypass push-button may be used to force the Excel 10 FCU Controller into the "occupied" mode. The Excel 10 FCU Controller can also be forced into the "occupied" mode by means of a LONWORKS network command (when nviManOccCmd is set to OC_BYPASS).
EXCEL 10 FCU CONTROLLER LNS PLUG-INS USER GUIDE Optimum Start Gradients There are two parameters, Cool Rec Ramp and Heat Rec Ramp, which can be configured to cause the cooling and heating setpoints respectively to ramp up to their occupied settings from their unoccupied or standby settings prior to scheduled occupancy. The Excel 10 FCU Controller uses the configured rates to determine the optimum time to start increasing the heating or cooling demand. See the following figures.
EXCEL 10 FCU CONTROLLER LNS PLUG-INS USER GUIDE Safety Features Fan Failure Protection When configured with an airflow detector, the Excel 10 FCU Controller protects equipment by switching OFF heating / cooling outputs and issuing an alarm when the fan fails. Frost Protection If the room temperature falls below 46.4 °F (8 °C), the Excel 10 FCU Controller enables the heating circuit to ensure frost protection and an alarm is issued. When the temperature rises above 48.
EXCEL 10 FCU CONTROLLER LNS PLUG-INS USER GUIDE Construction Excel 10 W7752 FCU Controllers Excel 10 W7754 FCU Controllers The Excel 10 W7752 FCU Controller is available in five basic models, each with two different possibilities for LONWORKS transceivers. All of these controllers are mains-powered, and two models are equipped with an additional high-power relay for applications with electric reheat. Table 5 shows the differences between models.
EXCEL 10 FCU CONTROLLER LNS PLUG-INS USER GUIDE Fig. 6. W7752 dimensions, in inches (mm) 180 L N com 1920 2122 2324 com fan 230 V I close open III II 110 90 130 D-71101 Schönaich Made in Germany triac 0.5 A close open DI2 FAN 5342 1 T7460 / T7560 Honeywell 2A 131415 16 17 18 GND DI1 LON SET 3 4 5 6 7 SENS 1 2 W7754Kxxxx 230 Vac, 50/60 Hz max. 5 VA unloaded 10A 8 9 10 11 12 +RS1A 23D25 0345 UNUSED DI2 USED LED ON GND UNUSED WALL MOD. USED 59.
EXCEL 10 FCU CONTROLLER LNS PLUG-INS USER GUIDE Controller Performance Specifications Hardware Output Power: W7752D and W7752E; W7754K,M,N,P 230 Vac +10%, -15%, 50/60 Hz. W7752F and W7752G 115 Vac +10%, -15%, 50/60 Hz. W7752J 100 Vac ±6%, 50/60 Hz. W7754L 24 Vac ±20%, 50/60 Hz. Fan Coil Unit Controller Object #8020 nviSpaceTemp SNVT_temp_p nv1 Mandatory Network Variables nviSetPoint SNVT_temp_p nv2 Operating Temperature: 32...122°F (0...50°C). Shipping/Storage Temperature: -40...+158°F (-40...
EXCEL 10 FCU CONTROLLER LNS PLUG-INS USER GUIDE Configurations General Fan Type The following sections provide an overview of the Excel 10 FCU Controller options related to inputs and outputs. See Application Step 6. Plug-Ins Configuration Screens for complete list of configuration options and defaults. Each fan coil unit controlled by an Excel 10 FCU Controller can have a fan with up to three different speeds or no fan at all.
EXCEL 10 FCU CONTROLLER LNS PLUG-INS USER GUIDE Fig. 9. Three-speed fan switching and hysteresis, cooling mode (defaults for switching levels shown) Valve action can be configured as either direct or reverse. When in a two-pipe system with a changeover input, a floating actuator can be used which has the middle position (50%) as the zero energy position. The cool range is then 0 to 50% and the heat range 50 to 100%. The output must be configured as floating-mid.
EXCEL 10 FCU CONTROLLER LNS PLUG-INS USER GUIDE Fig. 10. Three-stage heating/cooling switching (defaults for switching levels and hysteresis shown) sensor contact is closed, the effective occupancy mode will be "occupied". However, if the TOD schedule indicates an occupied state and if the occupancy sensor contact is open, then the effective occupancy mode will be "standby". The control algorithm will then control according to the "standby" setpoints configured for the heating and the cooling modes.
EXCEL 10 FCU CONTROLLER LNS PLUG-INS USER GUIDE Excel 10 Wall Module Options A typical FCU installation will include an Excel 10 wall module containing a 20k ohm NTC room temperature sensor and additional features depending on the wall module type (see Excel 10 wall module literature for further information).
EXCEL 10 FCU CONTROLLER LNS PLUG-INS USER GUIDE Abbreviations and Definitions CARE CPU Echelon® EMI EMS EEPROM EPROM Firmware I/O IxR K LONWORKS Computer Aided Regulation Engineering; the PC based tool used to configure LonWorks devices. NEC Central Processing Unit; an EXCEL 5000® System controller module. NEMA The company that developed the LONWORKS® network and the Neuron® chips used to communicate on it.
EXCEL 10 FCU CONTROLLER LNS PLUG-INS USER GUIDE engineering process to ensure their implementation when configuring the controllers. (See section "Step 6. Configure Controllers" [page 25] for information on the various Excel 10 FCU Controller parameters and on Excel 10 FCU Controller point mapping.) APPLICATION STEPS Overview Steps one through seven (see Table 8) address considerations for engineering an Excel 10 FCU System.
EXCEL 10 FCU CONTROLLER LNS PLUG-INS USER GUIDE NOTE: Due to the transformer isolation, the bus wiring does not have a polarity; that is, it is not important which of the two LONWORKS terminals are connected to each wire of the twisted pair. Step 3. Lay Out Communications and Power Wiring LONWORKS Layout LONWORKS networks can be configured in a variety of ways, but the rules listed in Table 9 always apply. Fig. 13 and Fig.
EXCEL 10 FCU CONTROLLER LNS PLUG-INS USER GUIDE Fig. 15. Free topology LONWORKS layout examples NOTE: See section "LONWORKS Termination" on page 23 for additional details. • All field wiring must conform to local codes and IMPORTANT Notes on Communications Wiring: • See Table 10 for permitted wire sizes. ordinances. • To minimize EMI noise, do not run Triac and/or • All field wiring must conform to local codes and ordinances.
EXCEL 10 FCU CONTROLLER LNS PLUG-INS USER GUIDE Table 10. Field wiring reference table (US part numbers shown) specification wire construction or vendor wire type max. length ft (m) function requirement Honeywell (US) AK3791 (one twisted pair) LONWORKS 14 to 20 AWG twisted pair solid Level IV 140°F See Step 2 AK3792 (two twisted pairs) (plenum) (2.0 to 0.5 mm2) conductor, non-shielded.
EXCEL 10 FCU CONTROLLER LNS PLUG-INS USER GUIDE Terminal Block Assignment and Wiring Example for the W7752 Controller Table 11 illustrates terminal block assignments and wiring for an example Excel 10 W7752 FCU Controller installation. Table 12 lists wiring information for all possible actuator types. Table 11.
EXCEL 10 FCU CONTROLLER LNS PLUG-INS USER GUIDE Terminal Block Assignment and Wiring Example for the W7754 Controller Table 13 lists the terminals and their functions of the Excel 10 W7754 FCU Controller. Table 14 lists wiring information for all possible actuator types. Table 13.
EXCEL 10 FCU CONTROLLER LNS PLUG-INS USER GUIDE Table 14.
EXCEL 10 FCU CONTROLLER LNS PLUG-INS USER GUIDE Step 5. Order Equipment After compiling a bill of materials through completion of the previous application steps, refer to Table 15 for ordering information. Contact Honeywell for information about controllers and Excel 10 wall modules with no logo. Table 15.
EXCEL 10 FCU CONTROLLER LNS PLUG-INS USER GUIDE Step 6. Configure Controllers 1. 2. 3. 4. 5. 6. 7. 8. 9. General This section will provide details on the configuration options for Excel 10 FCU Controllers. See Appendix C for reference information. Using Plug-Ins The configuration process is primarily performed in a series of screens seen as file tabs under the menu option Application Selection and is easily followed using the tables included in this section.
EXCEL 10 FCU CONTROLLER LNS PLUG-INS USER GUIDE Output The available options for output configurations with the default values shown are listed in Table 16. See section "Configurations" on page 12 for more information about parameters. Table 16.
EXCEL 10 FCU CONTROLLER LNS PLUG-INS USER GUIDE Input The available options for input configurations with the default values shown are listed in Table 17. See sections "Control Provided" and "Configurations" above for more information on parameters. Table 17. FCU Controller input configuration options function configuration options default space temperature sensor no sensor sensor sensor none - bypass button is disabled.
EXCEL 10 FCU CONTROLLER LNS PLUG-INS USER GUIDE Equipment Control The available options for equipment control configurations with the default values shown are listed in the following table. See section "Configurations" on page 12 for more information about parameters. Table 18.
EXCEL 10 FCU CONTROLLER LNS PLUG-INS USER GUIDE Switching Levels See section "Configurations" on page 12 for more information about parameters. Table 20.
EXCEL 10 FCU CONTROLLER LNS PLUG-INS USER GUIDE PID The options for configuring PID parameters with defaults are shown in the following table. See section "Configurations" on page 12 for more information about parameters. Table 23. FCU Controller PID configuration options function cooling proportional gain1 heating proportional gain1 cooling reset time configuration options default P control: 2.25 to 180 DDF (1.25 to 100 K) (0 = disable) PI control: 3.
EXCEL 10 FCU CONTROLLER LNS PLUG-INS USER GUIDE Table 24. Excel 10 FCU Controller alarms. Name of alarm or alarm bit alarm type number meaning of alarm code or alarm bit No Alarm/Return to Normal: RETURN_TO_NORMAL 128 Return to no error after being in an error condition. This code is added numerically to another alarm code to indicate that the error condition has returned to normal. ALARM_NOTIFY_DISABLED 255 The alarm reporting has been turned OFF by the nviManualMode =SUPPRESS_ALARMS.
EXCEL 10 FCU CONTROLLER LNS PLUG-INS USER GUIDE Broadcasting the Service Message Manual Mode The Service Message allows a device on the LonWorks network to be positively identified. The Service Message contains the controller Neuron ID number and, therefore, can be used to confirm the physical location of a particular Excel 10 FCU Controller in a building. The FCU Controller can be put into a manual mode which allows manual setting of outputs for system checkout.
EXCEL 10 FCU CONTROLLER LNS PLUG-INS USER GUIDE APPENDIX A: USING AN LNS TOOL TO COMMISSION A FAN COIL UNIT the actual Measured Value. When a value is typed in and Calibrate is clicked, the offset value is automatically calculated, displayed, and written to the Excel 10 FCU Controller. Temperature Sensor Calibration The temperature sensor in the Excel 10 wall modules can be calibrated to correct for sensor inaccuracies, wire resistance, etc.
EXCEL 10 FCU CONTROLLER LNS PLUG-INS USER GUIDE APPENDIX B: CONFIGURING FOR MASTER/SLAVE OPERATION If a fan is used in the slave units, all fan control settings must be the same as in the master controller. More than one Excel 10 FCU Controller may be used to control the temperature of a room. In this situation one controller must be identified as the master unit which will perform the temperature control algorithm.
EXCEL 10 FCU CONTROLLER LNS PLUG-INS USER GUIDE APPENDIX C: LON INTERFACE The tables are divided as follows: Table C2—Configuration variables Table C3—Input variables Table C4—Output variables Table C5—Unused variables 35 EN2B-0285GE51 R0909
EXCEL 10 FCU CONTROLLER LNS PLUG-INS USER GUIDE Table C2. Configuration Variables for Excel 10 FCU Controllers NV name field name engineering units: English (metric) or states plus range digital state or value default comments nciApplVer application_type UBYTE, 0 to 255 0 This configuration variable specifies the current application number of the Excel 10 application. nciApplVer version_no UBYTE, 0 to 255 0 This configuration variable specifies the version number of the Excel 10 application.
EXCEL 10 FCU CONTROLLER LNS PLUG-INS USER GUIDE Table C2.
EXCEL 10 FCU CONTROLLER LNS PLUG-INS USER GUIDE Table C2. Configuration Variables for Excel 10 FCU Controllers NV name field name engineering units: English (metric) or states plus range digital state or value default comments nciCntrlSettings fan_run_up_time SNVT_time_sec 0 to 600 seconds 0 0 This configuration variable specifies the time the fan runs before the outputs are switched ON. It is typically used for electric heat outputs with fan interlock (see nciFcuConfig.fan_interlock_0 and _1).
EXCEL 10 FCU CONTROLLER LNS PLUG-INS USER GUIDE Table C2. Configuration Variables for Excel 10 FCU Controllers NV name field name engineering units: English (metric) or states plus range digital state or value default comments nciCntrlSettings reheat_hysteresis SNVT_lev_percent 0 to 100% 5% This configuration variable specifies the hysteresis between switching the reheat output ON and OFF.
EXCEL 10 FCU CONTROLLER LNS PLUG-INS USER GUIDE Table C2.
EXCEL 10 FCU CONTROLLER LNS PLUG-INS USER GUIDE Table C2.
EXCEL 10 FCU CONTROLLER LNS PLUG-INS USER GUIDE Table C2.
EXCEL 10 FCU CONTROLLER LNS PLUG-INS USER GUIDE Table C2. Configuration Variables for Excel 10 FCU Controllers NV name field name engineering units: English (metric) or states plus range digital state or value default comments nciFcuGains si_pid_Xp[1] SNVT_temp_p 2.25 to 180 DDF (1.25 to 100 K), 0 = Disable 36 DDF (20 K) This configuration variable specifies the throttling range for use in the proportional portion of the PID loop gain for the heating mode.
EXCEL 10 FCU CONTROLLER LNS PLUG-INS USER GUIDE Table C2. Configuration Variables for Excel 10 FCU Controllers NV name field name engineering units: English (metric) or states plus range digital state or value default comments nciSetPnts standby_cool SNVT_temp_p 50 to 95°F (10 to 35°C) 77°F (25°C) This is the configured setpoint which applies to the standby cooling mode. Where the ZEB for standby is used, it is derived from the difference between standby_cool and standby_heat.
EXCEL 10 FCU CONTROLLER LNS PLUG-INS USER GUIDE Table C2.
EXCEL 10 FCU CONTROLLER LNS PLUG-INS USER GUIDE Table C3.
EXCEL 10 FCU CONTROLLER LNS PLUG-INS USER GUIDE Table C3. Input Variables for Excel 10 FCU Controllers NV name field name engineering units: English (metric) or states plus range digital state or value default comments nviManCool SNVT_lev_percent 0 to 100% 163.835% = INVALID This input variable can be used for master/slave installations where the cool output is controlled by an external controller node.
EXCEL 10 FCU CONTROLLER LNS PLUG-INS USER GUIDE Table C3. Input Variables for Excel 10 FCU Controllers NV name field name engineering units: English (metric) or states plus range nviReheatRelay value SNVT_switch 0 to 100% nviReheatRelay state SNVT_switch OFF ON NUL digital state or value default comments 0 (at application restart) This input variable is used to control the reheat relay via the network.
EXCEL 10 FCU CONTROLLER LNS PLUG-INS USER GUIDE Table C3. Input Variables for Excel 10 FCU Controllers NV name field name engineering units: English (metric) or states plus range digital state or value default comments nviSetPtOffset SNVT_temp_p -18 to 18 DDF (-10 to 10 K) 589.806 DDF (327.67 K) = INVALID 0 (if bound but fails to be received or at application restart) This input variable is used for binding third party nodes to authorize them for setpoint shifting.
EXCEL 10 FCU CONTROLLER LNS PLUG-INS USER GUIDE Table C3.
EXCEL 10 FCU CONTROLLER LNS PLUG-INS USER GUIDE Table C3. Input Variables for Excel 10 FCU Controllers NV name field name engineering units: English (metric) or states plus range nviWindow value SNVT_switch.value 0 to 100% nviWindow state SNVT_switch.
EXCEL 10 FCU CONTROLLER LNS PLUG-INS USER GUIDE Table C4. Output Variables for Excel 10 FCU Controllers. NV name field name nvoActiveSetPt engineering units: English (metric) or states plus range digital state or value default comments SNVT_temp_p 50 to 95°F (10 to 35°C) 621.806°F (327.67°C) = INVALID This output variable shows the active setpoint of the control algorithm. It is based upon the occupancy setpoints, the offset, and recovery ramping.
EXCEL 10 FCU CONTROLLER LNS PLUG-INS USER GUIDE Table C4. Output Variables for Excel 10 FCU Controllers.
EXCEL 10 FCU CONTROLLER LNS PLUG-INS USER GUIDE Table C4. Output Variables for Excel 10 FCU Controllers. NV name nvoAlarmStatus field name error_bit[2] nvoApplicMode nvoCoolOutput engineering units: English (metric) or states plus range digital state or value comments See above.
EXCEL 10 FCU CONTROLLER LNS PLUG-INS USER GUIDE Table C4. Output Variables for Excel 10 FCU Controllers. NV name field name engineering units: English (metric) or states plus range NO_FAN digital state or value 255 default comments nvoFanSpeedSw value SNVT_switch.value 0 to 100% This output variable allows the fan speed switch of a master controller to be used for all slave Excel 10 controllers in the same room. nvoFanSpeedSw state SNVT_switch.state OFF ON NO_FAN_SPEED_SW See above.
EXCEL 10 FCU CONTROLLER LNS PLUG-INS USER GUIDE Table C4. Output Variables for Excel 10 FCU Controllers.
EXCEL 10 FCU CONTROLLER LNS PLUG-INS USER GUIDE Table C4. Output Variables for Excel 10 FCU Controllers. NV name field name engineering units: English (metric) or states plus range digital state or value default normal operating modes, such as CTL_COOL. When the effective occupancy changes to unoccupied or 24 hours have elapsed since the last start-up or CTL_FLOATING_OUT_SYNCH mode, the controller enters this mode again to reset the floating output position tracking.
EXCEL 10 FCU CONTROLLER LNS PLUG-INS USER GUIDE Table C4. Output Variables for Excel 10 FCU Controllers. NV name field name engineering units: English (metric) or states plus range digital state or value default comments 0 to 100% 163.835% = INVALID nvoFcuStatus reheat_active SNVT_lev_disc ST_OFF ST_ON ST_NUL (No Reheat) This output variable reports the current state of the reheat output, when the controller is configured for one.
EXCEL 10 FCU CONTROLLER LNS PLUG-INS USER GUIDE Table C4. Output Variables for Excel 10 FCU Controllers. NV name field name engineering units: English (metric) or states plus range digital state or value default comments nvoFcuStatusP external_active Same as nvoFcuStatus Same as nvoFcuStatus. nvoFcuStatusP fan_stages_active Same as nvoFcuStatus Same as nvoFcuStatus. nvoFcuStatusP output_position[0] Same as nvoFcuStatus. Same as nvoFcuStatus.
EXCEL 10 FCU CONTROLLER LNS PLUG-INS USER GUIDE Table C4. Output Variables for Excel 10 FCU Controllers. NV name field name engineering units: English (metric) or states plus range digital state or value default comments 0 to 65535 nvoSensor fan_speed_switch SNVT_lev_disc ST_OFF ST_LOW ST_MED ST_HIGH ST_NUL (No Switch) This output variable indicates the position of the fan speed switch ON the wall module.
EXCEL 10 FCU CONTROLLER LNS PLUG-INS USER GUIDE Table C4. Output Variables for Excel 10 FCU Controllers. NV name field name engineering units: English (metric) or states plus range digital state or value default comments nviSpaceTemp is bound to another node, nvoSpaceTemp is not reported on the network.
EXCEL 10 FCU CONTROLLER LNS PLUG-INS USER GUIDE Table C4. Output Variables for Excel 10 FCU Controllers. NV name field name engineering units: English (metric) or states plus range digital state or value default comments nvoUnitStatus heat_output_primary SNVT_lev_percent 0 to 100% 163.835% = INVALID This output variable reports the actual heating output value. Any change forces nvoUnitStatus to be transmitted immediately. nvoUnitStatus heat_output_ secondary SNVT_lev_percent 0 to 100% 163.
EXCEL 10 FCU CONTROLLER LNS PLUG-INS USER GUIDE Table C4. Output Variables for Excel 10 FCU Controllers. NV name field name engineering units: English (metric) or states plus range digital state or value default comments 1. 2. (continued) nroPgmVer Network variables are unchanged. Functionality of the control algorithm has been revised and affects compatibility with other nodes or the equipment being controlled. 3.
EXCEL 10 FCU CONTROLLER LNS PLUG-INS USER GUIDE Table C5. Unused Variables for Excel 10 FCU Controllers NV name field name engineering units: English (metric) or states plus range digital state or value default comments nciApplVer not_used1 UBYTE Reserved for future use. nciApplVer not_used2 UBYTE Reserved for future use. nciCntrlSettings reserve 7 bits Reserved for future use. nciFcuConfig not_used 4 bits Reserved for future use.
EXCEL 10 FCU CONTROLLER LNS PLUG-INS USER GUIDE Manufactured for and on behalf of the Environmental and Combustion Controls Division of Honeywell Technologies Sàrl, Rolle, Z.A. La Pièce 16, Switzerland by its Authorized Representative: Automation and Control Solutions Honeywell GmbH Böblinger Strasse 17 71101 Schönaich Germany Phone: (49) 7031 63701 Fax: (49) 7031 637493 http://ecc.emea.honeywell.com Subject to change without notice.
