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EXCEL 15 W7760C PLANT CONTROLLER
INTRODUCTION
Description of Devices
The Excel 15 W7760C Plant Controller is a device that can be used to monitor and control HVAC equipment and other miscellaneous loads using L protocol on an Echelon L
ON
ON
W
T
ALK
ORKS
communications
The W7760C Plant Controller communicates via the 78 kilo bits per second (kbps) L
ON
W
ORKS
network, using a Free
Topology Transceiver (FTT). The W7760C is compatible with the Excel 15 W7760A Building Manager, the S7760A
Command Display, individual Excel 10 Controllers and
T7300F/Q7300H Series 2000 Commercial Thermostats and
Communicating Subbases. The W7760C monitors and controls both local and remote controller points.
The W7760C also supports configurable control loops for a wide variety of applications.(Each of the following control strategies can be configured with a combination of features, up to the maximum number stated for each type of loop.)
— Scheduling (from a W7760A Building Manager).
— Demand Limit Control (from a W7760A Building Manager).
— Time-of-Day Bypass.
— Setpoint Reset.
— Adaptive Intelligent Recovery™.
— Sequencer.
— Lead/Lag.
— Analog Limit.
— Setpoint Override.
— Setpoint Alarming.
— Start/stop loops (eight maximum). Start/stop loops are used to turn equipment on and off based on a Time Of Day
(TOD) schedule or a Demand Limit Control (DLC) situation.
— General Purpose Configurable Proportional Integral
Derivative (PID) Control Loops (ten maximum). Modulating or staged output (up to four stages per sequencer). Built-in auxiliary output to coordinate pumps or fans.
— If/Then/Else Logic Loops (32 maximum).
— Math Functions: MIN, MAX, AVG, SUM, SUB, SQRT, MUL,
DIV, ENTHALPY (36 maximum).
The W7760C is used in conjunction with the following devices:
— Excel 15 W7760A Building Manager.
— Excel 15 S7760A Command Display.
— Excel 10 W7751B,D,F,H VAV II Controllers
— Excel 10 W7750A,B,C Constant Volume AHU Controller.
— Excel 10 W7753A Unit Ventilator Controller.
— Excel 10 W7761A Remote Input/Output (RIO) Device.
— T7300F/Q7300H Series 2000 Commercial Thermostat/
Communicating Subbase.
— Q7760A Serial L
ON
T
ALK
Adapter (SLTA).
— Q7740A,B FTT Repeater (2-way and 4-way).
— 209541B FTT Termination Module.
NOTEBOOK PC
BUILDING MANAGER
1 4 8 12 16
EXCEL 15
W7760A
PLANT
CONTROLLER
EXCEL 15
W7760C
EXCEL 10
UV
T7770 OR T7560A,B
WALL MODULE
MODEM
EIA-232
SERIAL
PORT
SLTA
17 23 30 31 37 44
S7760
L
ON
W
ORKS
BUS
T7300F/
Q7300H
EXCEL 10
RI0
Back Select
EXCEL 10
VAVII
Q7740A
2-WAY
REPEATER
EXCEL 10
VAVII
PLANT
CONTROLLER
EXCEL 15
W7760C
BUILDING MANAGER
1 4 8 12 16
EXCEL 15
W7760A
EXCEL 10 VAVII
EXCEL 10
UV
T7770 OR T7560A,B
WALL MODULE
1 2 3
MODEM
EIA-232
SERIAL
PORT
SLTA
17 23 30 31 37 44
S7760
L
ON
W
ORKS
BUS
T7300F/Q7300H
Back Select
Fig. 1. Typical system overview.
M14508
74-3079 2
The T7770 or T7560 direct-wired Wall Modules are used in conjunction with Excel 10 W7751, W7750 and W7753
Controllers.
EXCEL 15 W7760C PLANT CONTROLLER
Control Application
Fig. 2 shows a typical W7760C control application.
EXHAUST
AIR
EXHAUST AIR DAMPER
NC
NO
EXHAUST
FAN
OUTSIDE
AIR
NC
MIXED
AIR
TEMPERATURE
T
+
RETURN
FAN
-
HEATING
VALVE
COOLING
VALVE
FAN
ON
H
RETURN
AIR
HUMIDITY
T
RETURN
AIR
TEMPERATURE
RETURN
AIR
VARIABLE
SPEED
DRIVE
P T
FAN
SPEED
HUMIDITY
VALVE
DUCT
STATIC
DISCHARGE
AIR
TEMPERATURE
FAN
STATUS
1
1
DO
3 1
1&2
32
COM 2
DO
33
3
DO
34
3&4
35
COM 4
DO
36
5
DO
37
5&6
38
COM 6
DO
39
7
DO
40
7&8
41
COM 8
DO
42
20
43
VDC
GND
44
2
45
24VAC
46
COM
47
24VAC
48
LINE
E
49
GND 1
AO
50
GND
51
2
AO
52
3
AO
53
GND
54
4
AO
55
5
AO
56
GND
57
6
AO
58
TRIAC EQUIVALENT CIRCUITS
HONEYWELL
W7760C
PLANT
CONTROLLER
1
DO
3 1
COM
1&2
32
DI
1
1
2
GND
3
DI
2
4
DI
3
5
GND
6
DI
4
7
DI
5
8
GND
9
DI
6
10
DI
7
11
GND
12
DI
8
13 14
EBUS
1 2
2
DO
33
1 CONNECT EACH D0 COMMON TO EITHER TERMINALS
(45, 46) FOR LOW-SIDE SWITCHING OR
TERMINALS (47, 48) FOR HIGH-SIDE SWITCHING.
2 EACH REPRESENTS TWO CONDUCTORS.
15 16
EBUS
1 2
17
AI
1
18
GND
19
AI
2
20
AI
3
21
GND
22
AI
4
23
AI
5
24
GND
25
AI
6
26
AI
7
27
GND
28
AI
8
29
GND
30
GND
DUCT
STATIC
PRESSURE
NETWORK
OUTSIDE AIR
TEMPERATURE
T
ROOM
TEMPERATURE
M17292A
Fig. 2. Typical air handling unit control application.
Control Provided
The W7760C functions to monitor and control HVAC equipment and other miscellaneous loads using a L
ON
W
ORKS network.
Product Name
The Excel 15 W7760C Plant Controller is available in one model:
— The W7760C2009 Plant Controller.
3 74-3079
EXCEL 15 W7760C PLANT CONTROLLER
Organization of Manual
This manual is divided into four basic sections:
1. Introduction: Provides an overview of the W7760C, discusses any related devices, lists additional literature and furnishes a glossary of abbreviations and definitions.
2. Construction: Describes controller hardware.
3. Application Steps: A step-by-step procedure that provides the necessary information to plan and lay out the
W7760C application and accurately order materials
4. Appendices: Provide information that allows a configuration to start using Honeywells Excel L
ON
S
PEC
™ PC software.
The organization of the manual assumes a project is being engineered from start to finish. If an operator is adding to, or is changing an existing system, the Table of Contents can provide the relevant information.
Applicable Literature
The following list of documents contains information related to the Excel 15 W7760C Plant Controller and the EXCEL 5000
OPEN™ SYSTEM.
Form No.
Title
74-2976
74-2977
Excel L
ON
S
PEC
™ Specification Data
Excel L
ON
S
PEC
Software Release Bulletin
Excel L
ON
S
PEC
Help is internal to ZL7760A software
74-3069
74-3090
74-2865
74-3123
74-3080
95-7611
74-3079
74-2967
95-7565
Excel L
ON
S
TATION
™ Specification Data
Excel L
ON
S
TATION
Software Release Bulletin
Excel L
ON
S
TATION
Help is internal to ZL7761A software
L
ON
W
ORKS
Bus Wiring Guidelines
Light Commercial Building Solution System
Communication Guide
Excel 15 W7760C Plant Controller Specification
Data
Excel 15 W7760C Plant Controller Installation
Instructions and Checkout and Test
Excel 15 W7760C Plant Controller System
Engineering
Excel 15 W7760A Building Manager
Specification Data
Excel 15 W7760A Building Manager Installation
74-2969
74-2970
74-2972
95-7561
74-2974
74-2942
74-2953
95-7504
95-7553
Instructions and Checkout and Test
Excel 15 W7760A Building Manager System
Engineering
Excel 15 System Integration Manual
Excel 15 S7760A Command Display
Specification Data
Excel 15 S7760A Command Display Installation
Instruction
Excel 15 S7760A Command Display User Guide
Excel 10 W7751B,D,F VAV II Controllers
Specification Data
Excel 10 W7751H Smart VAV Actuator
Specification Data
Excel 10 W7751B,D,F VAV II Controllers
Installation Instructions and Checkout
Excel 10 W7751H Smart VAV Actuator
Installation Instructions and Checkout
74-2949
74-2956
95-7521
74-2958
74-2962
95-7520
74-2964
74-2698
95-7539
74-2699
63-1281
63-4366
74-2697
95-7538
74-3097
95-7620
74-2954
95-7511
74-3067
95-7613
74-2858
95-7555
95-7554
62-0155
62-0125
63-4365
Excel 10 W7751B,D,F,H VAV II Controllers
System Engineering
Excel 10 W7750A,B,C CVAHU Controller
Specification Data
Excel 10 W7750A,B,C CVAHU Controller
Installation Instructions and Checkout and Test
Excel 10 W7750A,B,C CVAHU Controller System
Engineering
Excel 10 W7753A Unit Ventilator Controller
Specification Data
Excel 10 W7753A Unit Ventilator Controller
Installation Instructions and Checkout and Test
Excel 10 W7753A Unit Ventilator Controller
System Engineering
Excel 10 W7761A RIO Device Specification Data
Excel 10 W7761A RIO Device Installation
Instructions and Checkout and Test
Excel 10 W7761A RIO Device System
Engineering
T7300F/Q7300H Series 2000 Commercial
Thermostats and Communicating Subbase
Specification Data
Q7300H Series 2000 Commercial Thermostat
Communicating Subbases Installation
Instructions
T7300F Series 2000 Commercial Microelectronic
Conventional or Heat Pump Thermostat
Installation Instructions
T7300F/Q7300H Series 2000 Commercial
Thermostats and Communicating Subbases
System Engineering
Q7300H Communicating Subbase System
Integration User Address Manual
Excel 10 T7770A,B,C,D,E,F,G Wall Module
Specification Data
Excel 10 T7770A,B,C,D,E,F,G Wall Module
Installation Instructions
T7560A,B Digital Wall Module Specification Data
T7560A,B Digital Wall Module Installation
Instructions
SLTA-10 Serial L
ON
T
ALK
Adapter Specification
Data
SLTA-10 Serial L
ON
T
ALK
Adapter Installation
Instructions
Q7752B PCMCIA L
ON
W
ORKS
PCC-10 Card
Specification Data
Q7752B PCMCIA L
ON
W
ORKS
PCC-10 Card
Installation Instructions
Excel 10 Q7740A,B FTT Repeaters Specification
Data
Excel 10 Q7740A,B FTT Repeaters Installation
Instructions
Excel 10 209541B Termination Module
Installation Instructions
Other Product Model Numbers
• Q7760A Serial Adapter.
• Q7740A,B FTT Repeaters.
• 209541B FTT Termination Module.
Refer to Table 22 in Application Step 5. Order Equipment for a complete listing of all available part numbers.
74-3079 4
EXCEL 15 W7760C PLANT CONTROLLER
Agency Listings
Device
W7760C Plant Controller
Agency
UL
Table 1. Agency Listings.
Comments
Tested and listed under UL916 (file number E14480). NEC Class 2 rated.
cUL Listed E14480. NEC Class 2 rated.
CE Level A general Immunity per European Consortium Standards EN50081-1 (CISPR 22,
Class B) and EN 50082-1:1992 (based on Residential, Commercial, and Light Industrial).
EN 61000-4-2: IEC 1000-4-2 (IEC 801-2) Electromagnetic Discharge.
EN 50140, EN 50204: IEC 1000-4-3 (IEC 801-3) Radiated Electromagnetic Field.
EN 61000-4-4:
EN 55022:
CISPR-22:
IEC 1000-4-4 (IEC 801-4)
Electrical Fast Transient (Burst). Radiated Emissions and
Conducted Emissions:
1987 Class B.
1985.
FCC Complies with requirements in FCC Part 15 rules for subpart J Class A Computing Device.
Operation in a residential area can cause interference to radio or TV reception and require the operator to take steps necessary to correct the interference.
Abbreviations and Definitions
AHU
Air Handling Unit; the central fan system that includes the blower, heating equipment, cooling equipment, ventilation air equipment, and other related equipment.
Application
A specific Building Control function.
Binding
The process of logically connecting network variables in one node to network variable(s) in other node(s). Binding is performed by a network management node that writes the binding information into the EEPROM of each Neuron each Neuron.
involved. The binding information is saved in the network image of
Building Manager
A L
ON
M
ARK
certified device that can be used to monitor and control HVAC equipment and other miscellaneous loads in a distributed network.
Bypass
Temporary override of the scheduled occupancy state to the occupied mode. At the end of the bypass time, the control returns to the scheduled occupancy state.
CO
Carbon Monoxide. Occasionally used as a measure of indoor air quality.
CO
2
Carbon Dioxide. Often used as a measure of indoor air quality.
Command Display
A device that is used to monitor and change parameter in a L
ON
W
ORKS
HVAC application.
Continuous Trend
A type of log that starts accumulating data after configuration and continues to record data until reconfigured. After a specific number of configured samples are recorded, the data is replaced on a first-infirst out basis. This results in the most recent data being in the trend at the time of viewing or downloading.
Control Loop
A control function; A type of function in a node that includes processes, loops and programs. A node can contain one or more control loops. (In Excel
10 devices, the control loop occupies the entire node.)
COS
Change of state; COS conditions are used with schedule states such as occupied and unoccupied.
Changing from the occupied mode to the unoccupied mode is COS.
CPU
Central Processing Unit; an EXCEL 5000
SYSTEM controller module.
OPEN
cUL
Underwriters Laboratories Canada.
CVAHU
Constant Volume AHU; Refers to a type of air handler with a single-speed fan that provides a constant amount of supply air to the space it serves.
CZS
Commercial Zoning System.
DDF
Delta Degrees Fahrenheit.
D/X
Direct Expansion; Refers to a type of mechanical cooling where the refrigerant is expanded to its cold state in a heat exchanging coil that mounts in the air stream supplied to the conditioned space.
DLC
Demand Limit Control; A function that controls the maximum power demand made on the whole system by shedding some of the demand when power usage exceeds the predefined limit. Shedding requires turning off some digital output, or changing a setpoint to a more economical level.
Echelon
The company that developed the L
ON
W
ORKS
Bus and the Neuron
L
ON
W
ORKS
Bus.
chips used to communicate on the
Economizer
Refers to the mixed-air dampers that regulate the quantity of outdoor air that enters the building. In cool outdoor conditions, fresh air can be used to supplement the mechanical cooling equipment.
Because this action saves energy, the dampers are often referred to as economizer dampers.
EEPROM
Electronically Erasable Programmable Read Only
Memory; The variable storage area for saving user setpoint values and factory calibration information.
5 74-3079
EXCEL 15 W7760C PLANT CONTROLLER
EMI
Electromagnetic Interference; Electrical noise that can cause problems with communications signals.
EMS
Energy Management System; Refers to the controllers and algorithms responsible for calculating optimum operational parameters for maximum energy savings in the building.
Enthalpy
The energy content of air measured in BTUs per pound (KiloJoules per Kilogram).
EPID Control
An Enhanced Proportional Integral Derivative control algorithm that improves the PID control algorithm by compensating for system dynamics and allows faster control response rate reset. It also incorporates a sequencer, AI limit, deadband, start ramp and setpoint override.
EPROM
Erasable Programmable Read Only Memory; The firmware that contains the control algorithms for the
Excel 15 and Excel 10 Controllers.
Excel 10s
A family of application specific HVAC Controllers such as the Excel 10 CVAHU, Excel 10 RIO and the
Excel 10 UV.
Firmware
Software stored in a nonvolatile memory medium such as an EPROM.
Floating Control
Refers to Series 60 Modulating Control of a valve or damper. Floating Control utilizes one digital output to drive the actuator open, and another digital output to drive it closed.
FTT
Free Topology Transceiver.
HVAC
Heating Ventilation and Air Conditioning.
IAQ
Indoor Air Quality. Refers to the quality of the air in the conditioned space, as it relates to occupant health and comfort.
I/O
Input/Output; the physical sensors and actuators connected to a controller.
I x R
I times R or current times resistance; refers to Ohms
Law: V = I x R.
K
Degrees Kelvin.
Level IV
Refers to a classification of digital communication wire. Formerly known as UL Level IV, but not equivalent to Category IV cable. If there is any question about wire compatibility, use Honeywell-approved cables (see Step
5 Order Equipment section).
L
ON
W
ORKS
Bus
Echelons L
ON
W
ORKS
network for communication among Excel 15 Controllers, Excel 10
Controllers and T7300F/Q7300H Commercial
Thermostat/Communicating Subbases.
L
ON
W
ORKS
Bus Segment
An L
ON
W
ORKS
Bus network that contains no more than 120 total (Excel 15 W7760A,Cs,
Excel10s and T7300F/Q7300H Commercial
Thermostat/Communicating Subbases). A segment can have a repeater that allows the bus wire length to be doubled.
Mandatory Mechanisms/Objects/Network Variables
Mandatory mechanisms, object and network variables that are implemented in all of the Excel 10 devices.
NamedObject
Objects that have names are called
NamedObjects. These objects are visible on the network as functional independent entities and are accessed by name. Typical examples of NamedObjects are controllers, control loops and logic function blocks.
NEC
National Electrical Code; The body of standards for safe field-wiring practices.
NEMA
National Electrical Manufacturers Association; The standards developed by an organization of companies for safe field wiring practices.
Network Management Node
A L
ON
W
ORKS
node that is responsible for configuring the network, installing the nodes, binding the network variables between nodes and general network diagnostics.
Network Time Master
A network time master will be the only device sending out the time/date. All other network devices will use the time/date from the network time master (even if they have their own real-time clock).
Network time master is chosen/configured from
LonSpec
and remains unchanged until reconfigured, even in the event of a failure on the network time master. (The Excel 15 W7760C can not be the network time master.)
Network Time Scheduler
The network time scheduler sends out current and next state (occupied, unoccupied or standby) and time until the next change of state
(TUNCOS) to all of its control loops based on the configured schedules.
Network Variables
A class of variables defined in Neuron C that allow communication over the L
ON
W
ORKS
network to other nodes on the network. For example; An output network variable in one node can be bound to the corresponding input network variable(s) in other node(s). Changing the value of the output network variable in one node causes the new value to be automatically communicated to the bound input network variable(s) in other node(s). When an input network variable is updated, an nv_update_occurs event is posted at the receiving node(s) so that the application program can take action based on the change. A network management node that explicitly reads and/or writes the network variable can also poll network variables. Network variables can contain one data field
(one or two bytes) or multiple data fields (a structure).
Node
A Communications Connection on a network; An
Excel 15 or Excel 10 Controller is one node on the
L
ON
W
ORKS
Bus network.
NV
Network Variable; An Excel 15 or Excel 10 parameter that can be viewed or modified over the L
ON
W
ORKS
Bus network.
PC
An Personal Computer with Pentium processor capable of running Microsoft
Windows 95.
74-3079 6
EXCEL 15 W7760C PLANT CONTROLLER
Plant Controller
A device that can be used to monitor and control HVAC equipment and other miscellaneous loads in a distributed network.
Proportional Control
A control algorithm or method in which the final control element moves to a position proportional to the deviation of the value of the controlled variable from the setpoint.
Proportional Integral (PI) Control
A control algorithm that combines the proportional control and the integral reset control algorithms. Integral reset virtually eliminates offset by gradually shifting the controlled output in the direction that brings the controlled variable back to the setpoint.
Proportional Integral Derivative (PID) Control
A control algorithm that enhances the PI control algorithm by adding a component that is proportional to the rate of change (derivative) of the deviation of the controlled variable. PID compensates for system dynamics and allows faster control response rate reset.
PWM
Pulse Width Modulated output; Allows analog modulating control of equipment using a digital output on the controller.
RCD
Remote Communication Device; For the Building
Management System, this is a piece of hardware that is functionally compatible to an SLTA and provides access directly to the L
ON
W
ORKS
Bus.
Recovery Mode or Recovery Period
The time in unoccupied periods when the temperature control is adjusting the control setpoint so that the space temperature reaches the occupied setpoint when the schedule change occurs.
Reset
The reset of a control loop varies depending upon the type of control loop being reset. A reset for a thermostat loop or a control loop changes the setpoint and the algorithm in the energy saving direction. A reset for a start/stop loop causes the digital output to go to the inactive state before returning to its normal scheduled state.
RIO
Excel 10 Remote I/O Device; Additional inputs and outputs that can be configured for use by an Excel 15
W7760A or W7760C.
RTC
Real-time clock.
RTD
Resistance Temperature Detector; Refers to a type of temperature sensor whose resistance output changes according to the temperature change of the sensing element.
Schedule
The structure that defines the occupancy states, setpoints and the time of the changes between these states.
SLTA
Serial L
ON
T
ALK
Adapter; A serial interface between the EIA-232 (serial port on a PC) and a L
ON
W
ORKS
Bus used to adapt transformer-coupled Echelon messages.
SNVT
Standard Network Variable Type.
TOD
Time-Of-Day; The scheduling of Occupied and
Unoccupied times of operation.
TUNCOS
Time Until Next Change Of State is a command that can be sent to other controllers.
UV
An Excel 10 Unitary heating/cooling Ventilation System
Controller.
VA
Volt Amperes; A measure of electrical power output or consumption as applies to an ac device.
Vac
Voltage alternating current; ac voltage rather than dc voltage.
VAV
Variable Air Volume; Refers to a type of air distribution system.
VOC
Volatile Organic Compound; Refers to a class of common pollutants sometimes found in buildings.
Sources include out-gassing of construction materials, production-line by-products, and general cleaning solvents. A VOC is occasionally used as a measure of indoor air quality.
W7750
The model number of the Excel 10 CVAHU
Controllers (also see CVAHU).
W7751
The model number of the Excel 10 VAV Box
Controllers (also see VAV).
W7753
The model number of the Excel 10 UV Controller
(also see UV).
W7760
The model number of the Excel 15 Building Manager
Controller and the Plant Controller (also see Building
Manager and Plant Controller).
W7761
The model number of the Excel 10 RIO Device.
Wall Module
The Excel 10 Space Temperature Sensor and other optional controller inputs are contained in the
T7770 or the T7560A,B Wall Modules. See Application
Step 5. Order Equipment for details on the various models of Wall Modules.
7 74-3079
advertisement
Key Features
- LONWORKS network communication
- HVAC equipment control
- Remote control
- Analog and digital I/O
- Configurable control loops