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Chapter 14 Flashcards

1
Q

AHU

A

Air-Handling Unit
A device that monitors and
controls the air by volume
temperature, and humidity before
being released into a specified
building area. Typically, an AHU
consists of a fan, hot or cold coils,
and supplv and return ducts and
dampers. The AHU mixes indoor
and outdoor air and passes the
mixture of air through the coils.
TDMM.* Page G-6

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2
Q

BAS

A

Building Automation System
A control system consisting of
hardware (e.g., controllers, optical
fiber system (BAS) cabling,
input/output devices) and a
software application or suite of
software applications that
automate the electrical,
mechanical, or other building and
facility subsystems.
TDMM.* Page G-24

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3
Q

BIM

A

Building Information Modeling
The process (and supporting
software) of generating and
managing building data during its
life cycle using three-dimensional,
real-time graphical images with
substantial imbedded data about
each object. This allows
interactions and conflicts to be
automatically highlighted.
TDMM.* Page G-25

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4
Q

BMS

A

Building Management System
A system that provides centralized
monitoring of two or more building
systems that are typically
controlled by a buildina automation
system (BAS). A building
management system (BMS) may
also provide control functionality of
the individual BAS system.
TDMM.* Page G-25

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5
Q

CP

A

Consolidation Point
A connection facility within a
horizontal cabling subsystem for
interconnection of communication
cables extending from building
pathways into furniture pathways
or modular wall partitions to the
equipment outlet.
TDMM.* Page G-45

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6
Q

DDC

A

Direct Digital Control
A control loop used in building
automation systems (BAS) in
which a microprocessor-based
controller controls equipment (e.g.,
air handlers, chillers, boilers) based
on sensor inputs and set-point
parameters according to a
sequence of operations.
TDMM.* Page G-59

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7
Q

EAC

A

Electronic Access Control
A system composed of computer
software and hardware for
managing access to identified
spaces through the use of
established securitv levels, issued
credentials, and peripheral
electronic hardware, Includin door
contacts, request to exit (Rtx)
devices, card readers and
electronic locking hardware.
TDMM.* Page G-68

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8
Q

ESS

A

Electronic Safety and
Security System
Systems that utilize analog and
digital transmission of data in
addition to mechanical or
electrical methods to enhance
the safety and security
of a facility.
TDMM.* Page G-68

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9
Q

EMS

A

Energy Management System
A computerized monitoring and
control system used to manage
and provide operational
efficiency for electrical power,
heating, ventilation, and air-
conditioning (HVAC), and
lighting control systems.
TDMM.* Page G-70

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10
Q

EOLR

A

End-of-Line Resistor
A resistor that permits active
monitoring of a two-wire circuit
by using low-level circuit current
to detect a short or break.
TDMM: Page G-70

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11
Q

HC (FD)

A

Horizontal Cross-Connect
(Floor Distributor)
A group of connectors (e.g.,
patch panels, punch-down
blocks) that allow horizontal,
backbone, and equipment
cabling to be cross-connected
with patch cords or jumpers.
TDMM.* Page G-93

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12
Q

HCP

A

Horizontal Connection Point
A device in a BAS system
that allows coverage area
connections to be reconfigured.
TDMM.* Page 14-34

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13
Q

IB

A

Intelligent Building
A building that provides a
productive and cost-effective
environment through
optimization of its structure,
systems, services, and
management as well as the
interrelationships between them.
TDMM.* Page 14-2

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14
Q

IP

A

Internet Protocol
The Open Systems
Interconnection (OSI) Reference
Model Layer 3 (network layer)
protocol most commonly used
for internetworking. Required for
communications over
the Internet.
TDMM.* Page G-100

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15
Q

MC (CD)

A

Main Cross-Connect
(Campus Distributor)
The cross-connect normally
located in the (main) equipment
room for cross-connection and
interconnection of entrance cables,
first-level backbone cables, and
equipment cables. Campus
distributor is the international
equivalent term for main
cross-connect.
TDMM.* Page G-115

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16
Q

MPTL

A

Modular Plug Terminated Link
A copper cable incorporating a
standard RJ45 plug on one end
with a RJ45 jack on the
opposing end.
TDMM.* Page G-123

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17
Q

ROI

A

Return on Investment
The ratio of money gained or
lost on an investment relative to
the amount of money invested.
TDMM.* Page G-165

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18
Q

SCADA System

A

Supervisory Control and Data Acquisition System
A control system composed of programmable logic controllers (Plns), data inputs to the PLCs custom software, and electrically operated circuit breakers in the distribution gear. All these combine
to form a system that allows automatic operation and monitoring of the electrical system through control panel workstations.
TDMM.* Page G-188

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19
Q

TCP

A

Transmission Control Protocol
An Open Systems Interconnection
(OSI) Reference Model Layer 4
connection-oriented protocol. TCP
supports reliable, end-to-end
transmission of data by allowing
for guaranteed delivery and
sequencing of message segments.
TDMM.* Page G-198

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20
Q

Name the 2 systems that
are the basis of an
intelligent building (1B).

A

*Building automation system
(BAS)
Building management system
(BMS)
TDMM. Page 14-7

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21
Q

Name 6 functions
of the BAS.

A

1 .HVAC
2.EMS
3.Lighting control
4.Window and shade controls
5.Digital signage
6.Security and access control
systems, including video
surveillance
TDMM.* Page 14-1

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22
Q

Name 2 benefits of using a common cabling system for voice, data, video, and BAS systems.

A
  1. Reduces construction and operational costs
  2. Creates an opportunity for an IB
    TDMM.* Page 14-7
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23
Q

Name 4 features that
power-limited (low-voltage)
systems have in common.

A

1 . Telecommunications cabling
2. Transmission characteristics
3.Pathway requirements
4.Common/similar governing
codes and standards
TDMM.* Page 14-2

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24
Q

How often are BAS
products and technologies
typically upgraded?

A

Every 5 to 7 years
TDMM.* Page 14-3

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25
What is the typical life cycle of a building structure?
40+ years TDMM.* Page 14-3, Figure 14.1
26
What is the typical life cycle of an office automation system?
1 to 3 years TDMM.* Page 14-3, Figure 14. I
27
What is the typical life cycle of the telecommunications infrastructure in a building?
3 to 5 years TDMM.* Page 14-3, Figure 14.1
28
Name 3 important considerations for selecting a BAS.
1 .Flexibility 2.Scalability 3.Functionality TDMM.* Page 14-3
29
Name 4 standard features of a BAS.
1 .Common interface 2.Open system standards 3.Internet technology 4.Advanced integration TDMM.* Page 14-4
30
How much can a total systems integration approach reduce the costs of cabling-related changes?
By 25 to 40 percent TDMM.* Page 14-5
31
Name 3 benefits of ICT system technologies.
1 .Easier and centralized software updates 2.Reduced maintenance 3.Local operation using slim, low-cost clients that require only a browser TDMM.* Page 14-5
32
Name 2 operational benefits of EAC/BAS integration.
1 .Sharing of database records 2.Having only one integrated cabling system to administer TDMM.* Page 14-7
33
Name 5 benefits of a correctly designed HVAC control system.
1 .Comfortable environment for the occupants 2.0ptimized energy cost and consumption 3.1mproved employee productivity 4.Control of smoke in the event of a fire 5.Support for the operations of computer and other telecommunications equipment TDMM.* Page 14-7
34
What does "digital" in digital device control (DDC) reference?
The digital processing of data TDMM.* Page 14-9
35
Name 5 common strategies used by EMSs to control and monitor power.
1. Scheduling 2. Peak demand load shedding 3. Event-initiated control 4. Energy consumption and demand monitoring 5. Optimal starting and stopping of equipment TDMM.* Page 14-10
36
Name 2 items most utility companies use as the basis of the monthly electricity charges for commercial facilities.
1 .Consumption (e.g., kilowatt-hour) 2.Demand (e.g., kilowatt) TDMM.* Page 14-11
37
What is the basis of a consumption charge?
The total amount of electricity used during the monthly period TDMM.* Page 14-11
38
How do most companies calculate demand?
By measuring the electricity being used during any 1 5-minute interval during the monthly billing period TDMM.* Page 14-11
39
Which EMS program minimizes HVAC operating time by calculating how to achieve occupancy temperature at the start of the day?
Optimum start TDMM.* Page 14-13
40
What is the purpose of an optimum stop program for an EMS?
To minimize the HVAC operating time by calculating how long stored energy can maintain occupancy temperature at the end of the day TDMM.* Page 14-13
41
How do night cycle programs maintain temperature limits during periods when the facility is unoccupied?
By closing outside dampers and cycling air handling units TDMM.* Page 14-13
42
What does a night purge program use to pre-cool the building before the mechanical system is turned on?
Cool, night outside air TDMM.* Page 14-13
43
Which program ensures that only the minimum amount of cooling or heating energy is used to satisfy load requirements?
Load reset TDMM.* Page 14-13
44
Describe how a zero energy band program works in an EMS.
It creates a dead band where neither heating nor cooling is used. TDMM.* Page 14-13
45
Lighting may account for up to _ percent of the electrical operational costs in a commercial building.
Lighting may account for up to 40 percent of the electrical operational costs in a commercial building. TDMM.* Page 14-14
46
Name 2 advantages associated with using low- voltage timers for a lighting control system.
1 .Safer than high-voltage timers 2.More cost-effective than high voltage timers TDMM.* Page 14-14
47
Name 6 strategies that can be used to reduce the energy demand and consumption of lighting.
1 .Fixed power reduction 2.Occupancy-based, time of day, and on/off control 3.Vacancy sensors 4.Daylight harvesting 5.Daylight limiting 6.FIuorescent lamp lumen depreciation compensation TDMM: Page 14-14
48
What is one of the simplest forms of lighting control?
Fixed power reduction TDMM.* Page 14-74
49
What is an important safety consideration when using occupancy-based lighting control?
Individual occupants should be able to easily schedule or control lighting in areas with safe entry and exit when working after hours. TDMM.* Page 14-15
50
Why do vacancy sensors save more energy than occupancy sensors?
Because the occupants determine when the lighting is needed, reducing the power consumption when rooms are occupied and automatic turn on is not necessary TDMM.* Page 14-15
51
Where is daylight harvesting typically used?
In new buildings TDMM.* Page 14-15
52
What is an advantage of using demand limiting?
Demand lighting provides a kilowatt reduction directly proportional to the amount the lights are dimmed and is accomplished in a manner unnoticeable to the occupants. TDMM.* Page 14-15
53
How long does it typically take for the light output of a fluorescent lamp to deteriorate?
3 years (and stops at a level approximately 70 percent of the light output of a new lamp) TDMM.* Page 14-16
54
What is the objective of BAS?
To centralize and simplify building monitoring, control, operation, and management TDMM.* Page 14-17
55
Name the 3 hierarchical levels of microprocessor- based BAS controllers.
1 .Field-level controllers 2.System-level controllers 3.Management-level processors TDMM.* Page 14-17
56
Why are field-level controllers networked on a bus?
So information can be shared with processors at the system and management levels TDMM.* Page 14-19
57
How do system-level controllers respond if the communications bus is lost?
The controller will operate in standalone mode to provide system survivability. TDMM.* Page 14-19
58
What are the primary tasks performed by the a processor?
Collect, store, and process historical data that provide a tool for the long-term management and use of the facility TDMM.* Page 14-20
59
What does BAS software determine?
1 .How the interaction takes place 2.How the data is displayed 3.How printer output is formatted TDMM.* Page 14-20
60
Why are communications protocols an essential element of the BAS configuration?
*Because of the amount of data being transferred from one point to another * Because distributed processors may be dependent on each other for data pertinent to resident programs TDMM.* Page 14-21
61
What type of communications protocol did early BAS use?
Poll response protocols TDMM.* Page 14-21
62
What type of communications protocol do most BAS use today?
Peer protocols TDMM.* Page 14-21
63
Name 4 types of signals transmitted and received by BAS controllers.
1 .Analog inputs 2.Analog outputs 3.DigitaI inputs 4.DigitaI outputs TDMM.* Page 14-23
64
Describe an analog input.
An external device that sends proportional or continuously changing signals to the controller (e.g., humidity and temperature sensor) TDMM.* Page 14-23
65
What type of sensor sends a two-state, on-off, or two- position signal to a controller?
Digital input TDMM.* Page 14-23
66
How does a BAS device control a specific function?
By using input from a device and output from the controller TDMM.* Page 14-23
67
Which sections of the construction specifications have traditionally been used to specify cabling for BAS?
The mechanical and electrical sections TDMM.* Page 14-29
68
Name 3 methods for connecting a BAS device to the horizontal cabling in a star topology.
1 .A coverage area cable and a BAS outlet 2.A coverage area cable and an HCP 3.The horizontal link directly terminated on the BAS device connector TDMM.* Page 14-30
69
What is the typical size of a coverage area in a commercial building?
23m2 (248 ft2) TDMM.* Page 14-33, Table 14.1
70
What is the typical size of a coverage area in a commercial indoor parking area?
One coverage area every 50 m2 (538 ft2) TDMM.* Page 14-33, Table 14.1
71
What is the typical size of a coverage area in a mechanical room?
One coverage area every 5m2 (54 ft2) TDMM.* Page 14-33, Table 14.1
72
What is the purpose of an HCP?
To allow a coverage area connections to be reconfigured TDMM.* Page 14-34
73
How many HCPs should be placed in a horizontal link?
No more than 1 TDMM.* Page 14-34
74
True or False The functions of a CP/HCP can be combined within the same zone box.
True. The functions of a CP/HCP can be combined within the same zone box. TDMM.* Page 14-34
75
How many links should an HCP serve?
A maximum of 12 TDMM.* Page 14-34
76
Should BAS signals share the same horizontal cable as telecommunications signals?
No. BAS signals should not share the same horizontal cable as telecommunications signals. TDMM.* Page 14-35
77
Can BAS and telecommunications signals share the same backbone cable?
Yes. BAS and telecommunications signals can share the same backbone cable but should not share the same binder group within a multipair cable. TDMM.* Page 14-40
78
Should BAS and telecommunications signals share the same binder group within a multipair cable?
No. BAS and telecommunications signals should not share the same binder group within a multipair cable. TDMM.* Page 14-40
79
Name 3 factors that are used to calculate BAS backbone distribution system requirements.
1 .Number of pairs required for each device or branch 2.Number of systems to be integrated with a minimum of one binder group for each system 3.Distance limitations of the devices versus the quantity of devices TDMM.* Page 14-40
80
How does consolidating high- and low-voltage cabling into a common pathway usually affect labor hours?
It usually reduces labor hours by as much as 50 percent. TDMM.* Page 14-45
81
What type of intelligence do most modern BAS use?
Distributed intelligence TDMM.* Page 14-47
82
How should balanced twisted-pair cross- connections for BAS services be identified?
*With red insulator clips on the balanced twisted-pair cross- connect block on the terminating hardware *With a different colored balanced twisted-pair cross-connection conductor from the voice or data services TDMM: Page 14-49

MJ Class (23 decks)

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