Excel 12
INTEGRATED ROOM CONTROL SOLUTIONS: FCU + 4 LIGHTS
PRODUCT DATA
•2-wire FTT-10A LONWORKS® bus interface
•LonMark® certified
•Easily-accessible service button and service LED
•Application can be configured to user-specific needs via LNS™-based plug-in
•Applications can be downloaded via LonWorks into flash memory (thus increasing flexibility)
FEATURES
•Two-in-one controller for HVAC and lighting reduces hardware costs and engineering effort (one LONWORKS® node instead of two)
•HVAC application supports two sequences (heat, cool, or change-over)
•Light application supports four lamps. Up to two of the four light loops can be for constant light control. Light switching can be done depending on light level and occupancy (configurable via plug-in)
•Unused inputs can be used for monitoring. This application supports the following free inputs
•One unused binary output (relay or triac) can be switched via LONWORKS
•Different kinds of HVAC actuators (PWM, thermal, staged, floating, or analog) are supported
•DIN rail (wiring cabinet / fuse box) mounting and wallmounting supported
•Different power supply variants available
•Optional terminal protection covers for wall mounting
•Optional swivel label holders for wiring information
• Inputs / outputs can be freely assigned
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Excel 12 |
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light #1 (corridor) |
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inputs |
light #2 (corridor) |
output |
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light #3 (window) |
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light #4 (window) |
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three-stage fan |
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room |
sequence #1 |
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temp. |
sequence #2 |
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thermal, floating, |
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0...10V, PWM, |
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or staged actuators |
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Fig. 1. Functional overview
GENERAL
The Excel 12 FCU + 4 Lights application is LONMARK® certified, and can thus be used in all open LONWORKS® environments.
Excel 12 supports the following LONMARK® objects:
¾1 Node Object (LONMARK® object type #0)
¾4 Lamp Actuator Objects (profile #3040)
¾1 Occupancy Sensor Object (profile #1060)
¾1 Open Loop Sensor Object (LONMARK® object type #1)
¾1 Switch Object (profile #3200)
¾1 Space Comfort Controller Fan Coil Object (object type #8501)
¾1 Analog Input Object (profile #0520)
¾1 Open Loop Actuator Object (profile #3)
A variety of hardware models are available, with different power supplies.
Page 6 provides a detailed overview of the available models. Select the model fitting your particular needs.
The application can be downloaded into the Excel 12's FLASH memory.
Honeywell's LNS™ plug-in allows you to configure the application to match your specific requirements (e.g. configure the heating / cooling sequences, the light functionality and usage of otherwise unused inputs for monitoring according to your needs).
® U.S. Registered Trademark
Copyright © 2009 Honeywell Inc. • All Rights Reserved |
EN0B-0480GE51 R0909 |
EXCEL 12: FCU + 4 LIGHTS
APPLICATION
The Excel 12 FCU + 4 Lights application supports two HVAC sequences (HEAT, COOL, or CHANGEOVER), free inputs, 1 free binary output, and up to four lights.
The application is delivered together with the plug-in and must be downloaded into the Excel 12 controller's flash memory during start-up. The user can customize the application using Honeywell's LNS™ plug-in with CARE or any LNS™ tool (e.g. LonMaker for Windows™). Customizations can be saved / reloaded for easy configuration of multiple devices.
Application Overview
HVAC Application:
¾Two sequences configurable for HEAT, COOL, and CHANGEOVER
¾Support of thermal actuators, floating actuators, PWM, 0...10 Vdc, and staged output via triac outputs or relay outputs
¾3-stage fan via triac outputs or relay outputs
¾Binary inputs for condensation, occupancy sensor, window contact, etc.
¾Relative or absolute temperature setting via wall module.
Light Application:
¾Four times ON / OFF switching dependent on:
•Occupancy
•Internal light level. The light will be switched ON if the light level drops below the "dark level" and it will be switched OFF if it increases above the "bright level”. The "dark level" and the "bright level” can be configured via the plug-in.
NOTE: Do not select the “Auto Off Delay Timer” checkbox insofar as this functionality is currently not supported.
•Manual switching (via hardwired switches or LONWORKS® wall module)
¾Two times dimming / constant light control for two lights with just one sensor. Dimming / constant light control is performed via analog outputs (this requires a HighFrequency Device for dimming with 1...10 Vdc input). An additional relay is required to switch the light ON/OFF.
Constant light control helps to save additional energy. Fluorescent tubes normally lose about 15% of their brightness over their lifecycle. To compensate for this, rooms are therefore usually equipped with 15% more illumination than actually necessary. With constant light control, the light level needs to be only 85% in order to achieve the required brightness. Further savings and comfort can be achieved if there is a constant light level in the room and the light is automatically dimmed when more outside light enters. The Excel 12 supports window correction to reduce the light output of the window light. This functionality can be configured via the plug-in.
¾Grouping of lights, e.g. switch four lights via a single push button.
¾Soft ON/OFF switching for dimmable lamps.
¾Light sensor: The light intensities typically encountered in everyday life are listed in Table 1, while Table 2 presents the recommended light levels in various environments as set forth by DIN5035.
NOTE: One lux is equivalent to 0.0929 foot-candle. Refer also to the plug-in help information for details.
Table 1. Typical light intensities
ambient conditions |
intensity (lux) |
summer day, cloudless |
100,000 |
summer day, cloudy |
20,000 |
winter day, cloudy |
400 |
night, with full moon |
0.3 |
Table 2. Recommended light intensities (DIN5035)
area |
intensity (lux) |
storage rooms |
50...200 |
washrooms, cloakrooms, corridors, etc. |
100 |
office rooms (near windows) |
300 |
office rooms (minimal outside light) |
500 |
open-plan office rooms |
750 |
schools (daytime) |
300 |
night schools |
500 |
gymnasiums |
200 |
show rooms |
300 |
commercial kitchens |
500 |
NOTE: The intensity level depends on the sensor type and the mounting location.
NOTE: The indoor light sensor must be suitable for sensing artificial light, and should be mounted more towards the corridor.
Free Inputs for Monitoring:
¾Unused inputs can be used for monitoring. This application supports the following free inputs:
•one temperature input (NTC20k; nvoAiTemp)
•one percentage input (0..10 V or 2..10 V; nvoAiValuePct)
•two binary inputs (nvoDiSwitch[0/1])
Free Binary Output Can Be Switched Via LONWORKS:
¾One unused binary output (triac or relay outputs) may be switched via LONWORKS® (nviFreeOutput).
Occupancy Modes:
¾Occupied mode: The Excel 12 operates according to the "occupied" heating and cooling set-points.
¾Bypass: After the bypass button of a hardwired wall module has been pressed or when corresponding data is received via the LONWORKS® network, the Excel 12 operates temporarily according to the "occupied" heating and cooling set-points. When the bypass time has elapsed, the controller reverts to scheduled mode. The bypass time can be configured via plug-in.
¾Standby mode: The Excel 12 operates according to the "standby" heating and cooling set-points.
¾Unoccupied mode: The Excel 12 operates according to the "unoccupied" heating and cooling set-points.
EN0B-0480GE51 R0909 |
2 |
EXCEL 12: FCU + 4 LIGHTS
¾Occupancy sensor: The occupancy sensor is used for the HVAC and light application. Hardwired and LONWORKS® occupancy sensors are supported. The occupancy sensor determines the effective occupancy mode during scheduled occupied periods (time program with occupancy schedule runs on a different controller connected to the LONWORKS® network). Depending upon the actual occupancy sensor state, the effective mode will be either "occupied" or "standby."
Wall Modules:
¾LONWORKS® wall modules
¾Hardwired wall modules (e.g. T7460, T7560)
¾Wireless wall modules (e.g. W7070+T7270 or RT7070)
Master / Slave Functionality:
The master / slave functionality allows easy adaptation to changed room usage.
nviEnergyHoldOff
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SEQUENCE 0, POSITION *1 |
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SEQUENCE 1, POSITION *1 |
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nvoEnergyHoldOff |
Excel 12 |
FANSPEED, POSITION *2 |
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OCCUPANCY MODE |
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HEATING/COOLING POSITION *3 |
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WINDOW CONTACT
*1: ONLY IF SEQUENCE IS CONFIGURED *2: ONLY IF FAN IS CONFIGURED
*3: ONLY IF CHANGEOVER SEQUENCE IS CONFIGURED
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SLAVE |
nvoSequence [0] |
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nviSequence [0] |
nvoSequence [1] |
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nviSequence [1] |
nvoFanSpeed |
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nvoEffectOcc |
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nviOccManCmd |
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nvoHeatCool |
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nviApplicMode |
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nvoEnergyHoldOff
THIS NV ALWAYS BINDS THE MASTER XL12 TO THE FINAL SLAVE XL12.
WINDOW CONTACT
slave nviEnergyHoldOff
Excel 12
WINDOW CONTACT
Fig. 2. Master / Slave functionality
master |
nvoLampValue |
nviLampValue |
slave |
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nviLampValue |
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Fig. 3. All lights switched via master pushbutton
NOTE: Binding via LONWORKS results in a short delay between the switching of the different lamps.
nviLampValue |
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nvoLampValue |
nviLampValue |
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THIS NV ALWAYS BINDS THE MASTER XL12 TO THE FINAL SLAVE XL12. |
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LIGHT
Fig. 4. All lights switched on via any pushbutton
NOTE: This binding shall not be used for applications involving dimming or constant light control. Binding via LONWORKS results in a short delay between the switching of the different lamps. Pressing the pushbutton repeatedly and rapidly may cause toggle effects.
Benefits of Integrated Room Control
The Excel 12 functionality provides you with a number of significant advantages:
Considerable Reduction in Energy Consumption:
•25...75% savings on electrical energy consumption for illumination.
•Decreased heat generated by electric lights, thus reducing cooling energy requirements.
Increased Convenience:
•Occupancy sensor switches the light ON/OFF automatically.
•Constant light control always provides the correct lighting.
•Wireless control via ZAPP (see ZAPP System Engineering, EN0B-0286GE51).
Increased Flexibility:
•Flexible room usage if a LONWORKS® wall module or ZAPP (wireless remote control) is used.
Reduced Engineering Effort / Expenses:
•Just one LONWORKS® node (instead of two) is required to cover HVAC and Light.
+reduced engineering and installation effort (e.g. wiring, binding, commissioning, etc.)
+reduced integration effort
+lower cost due to reduced number of LNS™ credits
+lower hardware total loop costs
INTEROPERABILITY
The Excel 12 has been certified as per LONMARK® Application Layer Guidelines V 3.3. and is thus interoperable with all other devices in open LONWORKS® networks (including thirdparty devices).
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EN0B-0480GE51 R0909 |
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