Legrand Bi-level HID Lighting Control Design and User guide

Brand: Legrand

Model: Bi-level HID Lighting Control Design and

Type: User guide

B i - l e v e l H I D C o n t r o l s

B i - level HID Lighting Contro l

Design and Application Guide

DMAPPS_1204

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Design guide intro d u c t i o n

W h i le High Intensity Discharge (HID) lighting is a popular lighting choice, these lights

a re often left on co n t i n u a l l y due to the lengthy re s t r i k e periods. Now, mandatory energ y

codes are making co n t rol of HID lighting just as critical as co n t rolling any other type of

lighting. Watt Sto p p e r ’s DM b i - l evel co n t r ols make effe c t i v e HID co n t rol poss i b le by

s w i t ching lights from high to low.

Realizing the full potential of co n t rolling HID lights re q u i r es ca r eful co n s i d e ration of a

number of fa c to rs. This guide discusses each of these fa c to rs in addition to ex a m i n i n g

four specific HID co n t rol applica t i o n s .

In this guide you’ll find deta i led steps fo r

designing an HID co n t r ol application using

DM module s :

1 . S e l ecting the appro p r i a te DM module fo r

the applica t i o n

2 . C o n t rol method and dev i c e sele c t i o n

3 . C o n t rol appro a c h e s

4 . Wiring and insta l l a t i o n

A p p l i c ation ex a m p les for specific building space s

Watt Sto p p e r / L e g ra n d ’s application experts are ava i l a b l e for design support and ass i s -

ta n ce on any lighting co n t r ol question. Call our te c h n i c al support at 8 0 0 - 8 7 9 - 8 5 8 5 .

T h e r e are three diffe r ent DM products in Watt Sto p p e r ’s line of bi-level HID co n t r o l s .

Each is designed for diffe rent applications.

• DM-100 for re t rofitting ex i sting HID fixture s

• DM-105 for new fixtures or installation by fixture

m a n u f a c t u re rs

• DM-105-WP for outdoor use

I n t r oduction

S t ep 1 - Select appro p r i a t e DM module

S e l ecting the DM

m o d u le

B i - l e v e l H I D C o n t r o l s

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B i - l e v e l H I D C o n t r o l s

T h e r e are many diffe rent co n t rol dev i c es to choose from to signal the DM modules fo r

HID co n t rol: occupancy sensors, photo c ells, time switches, or lighting co n t r ol panels.

M o re o ver, these products can be combined to achieve customized co n t rol of a particular

fa c i l i t y.

• I n te r m i t te n t l y used spaces benefit from installations that team the DM with occ u-

pancy sensors.

• With photo cells, designers can maximize use of natural light by combining it with

other co n t rol dev i c es to signal the DM modules.

• Time switches like the TS-400 enable users to cre a t e co n s i s tent HID co n t rol thro u g h-

out a wo r k s p a c e.

• Lighting co n t r ol panels provide ce n t ralized co n t rol for facilities that are best suite d

for this type of co n t ro l .

For additional guidelines on selecting the optimal co n t rol dev i c e, re f er to the pro d u c t

specific design and application guides in this binder.

C o n t rol inputs

Combining co n t r ol dev i ces is simple with DM

m o d u l es via the dual co n t rol inputs. These allow

i n s ta l le rs to connect the dev i ce to multiple co n-

t rol dev i c es simulta n e o u s l y.

S t ep 2 - Choosing co n t rol method and dev i ce

Inputs # 3 and 4 on the DM port enable

designers to connect a single DM or a

series of DMs to different control devices,

such as a photocell and time switch.

S e lecting co n t ro l

m e t h o d

Occupancy sensors

Photocells

Time switches

Lighting control panels

Outdoor motion sensor

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B i - l e v e l H I D C o n t r o l s

S t ep 2 - Choosing co n t rol method and dev i ce

S e lecting co n t ro l

d e v i ce s

I m p o r tant fa c to rs to consider when identifying the appro p r i a te co n t rol product for an HID

lighting system include:

• D e v i c e mounting height

• Traffic patte r n s

• Ambient light levels

• F i x t u r e lo ca t i o n s

C o n t rol dev i c e mounting height

The height at which the co n t r olling dev i c e can be mounted is important. For insta n c e ,

some HID systems are insta l l ed in facilities with ceiling heights exceeding 15 feet. Since

this mounting height would diminish the effe c t i v e n e ss of ce r tain occupancy sensors (such

as ultrasonic sensors), a PIR sensor (such as the CI-300 or CX-100, which can be

m o u n ted at heights up to 40 feet) or a diffe rent co n t r ol product altogether (such as a

lighting co n t r ol panel or photo cell) should be chosen.

O c cupant traffic patte r n s

The ways in which occupants move through a space also may influence the selection of

the lighting co n t rol dev i c e to signal the DM co n t ro l l e r s. For insta n c e, in a ware h o u s e ,

o c cupants may use a main aisle fre q u e n t ly and side aisles only occa s i o n a l l y. In this ca s e ,

s e l ecting occupancy sensors to co n t rol zones based on occupancy will be a more effe c t i v e

co n t r ol method than co n t rolling the entire space ’s lighting co l l e c t i v e ly with a lighting co n-

t rol panel.

Ambient light leve l s

S o u rces of natural light, such as skylights, windows, and open loading docks offer the

opportunity to supplement or re p l a ce artificial HID lighting during daylight hours in ce r-

tain areas. Designers can ta k e adva n t age of this by supplementing a primary co n t ro l

method, such as time scheduled co n t rol, with daylight re s p o n s i v e co n t rol via photo c e l l .

P h o to cells would co n t r ol ce r tain zones during daylight hours, while a lighting co n t r o l

p a n e l’s time clock would co n t rol the same area during night time hours .

F i x t u r e lo c a t i o n s

The physical lo cation of some facility equipment, such as warehouse shelves, or even the

H I D f i x t u r es themselves may impact the effe c t i v e n e s s of particular co n t r ol methods. Fo r

i n s ta n c e, in a warehouse, shelf height may impede the line of sight of a pass i v e infra r e d

sensor so that a pre f e r red method might be a time switch at the end of each aislew a y.

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B i - l e v e l H I D C o n t r o l s

S t ep 3 - Evaluating co n t rol appro a c h e s

D i f f e rent facilities will call for diffe rent HID co n t rol st r a tegies. Usage patterns of the fa c i l -

ity (defined as how many occupants use the space as well as how and when they use it)

a re key to selecting the appro p r i a t e ones. Ass e ssing how the space is being used will help

the designer determine the optimal co n t r ol st r a te g y.

For HID co n t rol, two specific approaches can be imple m e n ted, either singly or co m b i n e d :

• Individual pinpoint co n t rol

• C ove rage co n t rol zones

O f t en, both co n t r ol approaches will be imple m e n ted in the same facility to provide appro-

p r i a t e co n t r ol for areas with diffe r ent usage patterns.

Pinpoint co n t rol is “one-to-one” co n t rol; that is, a single dev i c e co n t rols a single HID fix-

t u re and DM. With this approach, individual co n t rols and individual DM modules are

a t t ached to individual HID fixtures. This is beneficial when occupancy and traffic patte r n s

change ra p i d ly in specific areas.

C o ve r age co n t r ol invo l ves creating zones of cove r age by linking multiple HID fixtures and

their accompanying DM modules together and then connecting them to a single lighting

co n t r ol dev i c e. More than 100 individual HID fixtures and DM modules may be co n n e c te d

in this manner. By creating these zones, users can co n t rol the light in specifica l l y defined

a reas unifo r m l y. They can also acco m m o d a te the varying traffic and occupancy patterns of

d i f f e rent areas more clo s e l y, resulting in gre a ter energy savings.

P i n p o i n t

co n t ro l

C o ve r a g e

co n t r o l

E x a m p l e

In a parking garage, occupancy-based pinpoint co n t ro l

is sele c ted for turns on ramps or areas near eleva to rs

b e c ause traffic patterns in those areas can change

ra p i d ly and unpre d i c ta b ly.

P roducts Used

DM-105-WP, 24 VDC

o c cupancy sensor

E x a m p l e

S t o c k room aisles are defined as individual zones co n-

t ro l led by occupancy sensors, to re f l ect their infre q u e n t

use. The sto c k room loading dock area, however, is

co n t r o l led by a ce n t ral co n t r ol panel with preset hours

of operation to re f l ect its much more regular use.

P roducts Used

DM-100, lighting co n t r o l

panel, 24 VDC occ u p a n c y

s e n s o r s

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B i - l e v e l H I D C o n t r o l s

S t ep 4 - Wiring and insta l l a t i o n

I n s talling an HID co n t r ol system begins with identifying the appro p r i a te lo cations for both

the DM module (if it is to be ex ternal to the fixture) as well as the co n t r ol dev i ce. (See

page 2 on selecting co n t ro l

d ev i ce s ) .

A DM-100 can be insta l l e d

d i re c t l y on the HID fixture .

When it will be insta l led this

way, the co n t ra c tor should

mount the module to the

junction box above the fixture

via a 1/2-inch knockout.

DM modules may also be

i n s ta l led re m o t e l y, such as

on the girder or ra f t er fro m

which the fixture is atta c h e d .

Then, the insta l ler should

connect the DM module to

the junction box via co n d u i t .

R e m o t e installation must be

within six feet of the fixture to co m p l y with National

E lectric Code (NEC) provisions that re strict the le n g t h

of flex i b l e metal co n d u i t .

For outdoor applications, a wate r p r oof ve r sion of the

DM is mounted to the fixture head. Wiring to the sen-

sor can be accomplished via the provided outdoor

ra ted wire on the ex t ernal pole and cro ss members .

A l t e r n a t i ve ly, the ca b l e can be ro u ted inside the pole ,

if wind loading is not adve rs e ly affe c t ed by drilling into

the pole .

I n s talling DM

m o d u les

Fixture-mounted DM-

100

Remotely mounted DM-100

DM-105-WP Mounting

Fixture-mounted DM-

105

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B i - l e v e l H I D C o n t r o l s

T h e r e are two basic ways to wire DM modules depending

on the model. The two wiring methods are determined by

whether the dual ca p a c i tor, used to switch the ballast fro m

a high level to a low level, is lo c a ted inside the fixture or

inside the DM module. The ca p a c i tor values are dete r-

mined by the type of ballast being co n t ro l l ed. It is impor-

tant in all cases, to co n tact Watt Stopper to determine the

co r r ect dual level ca p a c i tor values for the fixture that will

be co n t r o l led by the DM.

The DM-100 is pre - w i red with the co r rect ca p a c i tor for the

b a l l a s t type inside the DM itself. For this reason, the

D M -100 is best suited for re t r ofit applications and can be

m o u n ted re m o te ly from the fixture .

DM-105 models come in a ve rsion for indoor applications, and a ve rsion for outdoor appli-

cations. The dual level ca p a c i tor is wired inside the fixture in applications using the DM-

105. A DM-105 can be used for new co n struction projects, where the ca p a c i tor is pre -

i n s ta l led in the fixture. It can also be used in re t rofit applications, where the ca p a c i tor is

field insta l l e d .

S t ep 4 - Wiring and insta l l a t i o n

Wiring DM

m o d u les

Basic wiring of DM-100 with HID

fixture in a retrofit application.

Basic wiring of DM-105 with HID fix-

ture for new or existing fixtures.

Wiring of DM-105-WP for HPS fixtures

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B i - l e v e l H I D C o n t r o l s

S t ep 4 - Wiring and insta l l a t i o n

In some applications, the co n t r ol dev i c es will be lo c a ted on or near the HID f i x t u re and

DM module (i.e., occupancy sensors, photo cells). To install these types of co n t rols, it is

re c ommended that insta l le r s use specialized mounting bra c k ets, such as the MB-1 or

MB-2. Both bra c k ets have been designed specifica l ly for Watt Stopper co n t r ol dev i c e s ,

and include adjusta b le mounting plates for positioning the dev i c e at the appro p r i a te

a n g l e.

I n s ta l l e r s use the MB-1 to mount co n t ro l s

on walls, ceilings, or gird e rs. This bra c k e t

is pre f e r red for installations where the

co n t r ol dev i c e is an occupancy sensor that

will be covering aisleways or closed sto r-

age areas.

For insta n c e, in using the DM-100 with a

CX-100-4 sensor for aisleway entry cove r -

age, the insta l l er would first mount the

MB-1, then ensure it was level using the

built-in bubble level on the bra c k e t .

F i n a l l y, the insta l l er should adjust the

a n g l e of the sensor to the re c o m m e n d e d

e l evation of 33 degrees. (For additional

i n f ormation on sensor placement, see the

a p p l i cation and design guide for occupancy sensors in this binder.)

For outdoor co n t rols, an EW or EN series

sensor should be mounted using the

1 / 2-inch knockout on a watertight, outdoor

ra ted junction box .

Designed specifica l l y for use with HID fix-

t u res, the MB-2 bra c k et provides the ability

to install the co n t r ol dev i c e dire c t l y on the

f i x t u re re f le c to r. This option is pre f e r red fo r

i n s talling co n t rol dev i ces in open are a s .

With the MB-2 bra c k et, the insta l l er wo u l d

f i r st mount the dev i c e, such as a photo c e l l ,

to the bra c k e t ’s adjusta b l e mounting plate .

Then, the bra c ket would be attached to the

f i x t u re re f le c tor bell, secured to the rim by

the three clamping screws. Once mounte d ,

the plate would be adjusted to the pro p e r

p o s i t i o n .

Fixture

mounting

bracket

Mounting a sensor using

the MB-1 bracket

Fixture-mounted photocell using

the MB-2 bracket

DM-100

MB-2 bracket

Photocell

I n s talling

co n t ro l

d e v i ce s

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B i - l e v e l H I D C o n t r o l s

Application Examples

A p p l i c ation description

Wa r ehouse with skylights and

m u l t i p l e diffe r ent work are a s

( a i s l eways, open areas, quality

co n t r ol opera t i o n s ) .

C o n t rol needs

Pinpoint and cove rage co n t ro l .

Daylighting co n t rol. Auto m a t i c

s h u t off when operating hours

conclude for quality co n t r o l

o p e r ations area (remainder of

facility is 24/7 operation).

S o l u t i o n

LS-100 in open area zone to

signal DM modules to switch to

low when daylight is adequate .

Pinpoint co n t rol in aislew a y

zones with CX-100 occupancy sen-

s o rs. CI sensors provide ongoing co n t r ol and automatic shutoff in quality co n t r ol open

a reas.

A p p l i c ation description

R o o f ed parking garage open on all

sides to outdoors. Lighting is oper-

a ted co n t i n u a l ly; occupancy is spo-

radic during the late nighttime-early

morning hours.

C o n t rol needs

S c h e d u l ed co n t r ol throughout fa c i l-

ity, with occupancy-based co n t r o l

zones at crucial areas (i.e., eleva to r s

and stairways, ramps, walkways).

R e d u c e lighting around gara g e

p e r i m e t er when daylight is ade-

q u a te.

S o l u t i o n

Lighting Inte g r a tor panel prov i d e s

s c h e d u l ed co n t r ol for 24/7 operation, with lower lighting levels facility-wide from dusk to

dawn. Occupancy sensors co n t rol critical zones to override scheduled co n t rol and signal

DM modules to switch HID lighting to high when occupied. Photo cells co n t r ol perimete r

lighting to signal DM modules to switch lighting to low levels when daylight levels beco m e

sufficient.

B i - level HID co n t rol applica t i o n s

Wa rehouse

Skylights

LS-100 photocell

(open area zones)

CX-100 Occupancy sensor

(aisleway zones)

CI occupancy

sensors

DM-100 mounted

on HID fixture

Quality control

operations (pin-

point control)

A warehouse design utilizes two types of occupancy sensors

in different zones, as well as a zone controlled by a photocell.

Coverage zones in specific areas, such as aisleways and areas around

elevators, ensure that occupancy sensors will override a central control

panel and switch lights to high when there is movement through the

area. Other garage areas, such as the elevator area, remain on low levels

while vacant.

Pa r k i n g

g a r a g e

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B i - l e v e l H I D C o n t r o l s

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B i - l e v e l H I D C o n t r o l s

A p p l i c ation description

Gymnasiums often have occupancy patterns with regular usage over a co n s i s tent time

span as well as times when they are unoccupied or nearly va c ant. For insta n c e, in the ve r y

e a r ly mornings, little use may be made of the space except for mainte n a n c e pers o n n e l

p reparing for the day’s schedule. At lunchtime and late afternoons, activity may increase.

C o n t rol needs

R e d u c e light levels auto m a t i ca l ly when occupancy ends. Automatic shutoff when sched-

u l ed activities are concluded for the day.

S o l u t i o n

In cases where the gymnasium utilizes a lighting co n t r ol panel, the facilities manager

could co n f i g u re the co n t rol schedule to re f l ect occupancy patterns. In addition, occ u p a n c y

s e n s o r s could be used to override co n t rol schedules when desired.

In other cases, a time switch (i.e., TS-400) may be the most co n venient co n t rol method

both for mainte n a n ce personnel and occupants. By connecting all the DM modules and

linking them to the TS-400, co n s i stent time-based co n t r ol can be achieved from a single

lo c a t i o n .

B i - level HID co n t rol applica t i o n s

G y m n a s i u m

On the left, the morning janitor switches lights with the time switch on the wall, which increases the gymna-

sium HID lamps to high. On the right, at the end of the day’s activities, the time switch times out and the

lights return to low.

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B i - l e v e l H I D C o n t r o l s

A p p l i c ation description

Many times the HID lighting for out-

door parking lots turns on at dusk

and off at dawn, even though the lo t

may be used infre q u e n t l y. The ability

to switch these HID lights from high

to low when the lot is unocc u p i e d

and bright light is not needed wo u l d

s a v e co n s i d e ra b l e energ y.

C o n t rol needs

S c h e d u l ed or photosensor co n t rol to

keep lights off during daylight hours .

Motion-based cove rage co n t ro l

zones at light posts to bring lighting

to full power when a car or pers o n

e n te rs the space. Reduce light leve l s

a u to m a t i ca l l y when occupancy ends.

S o l u t i o n

The DM-105-WP co u p led with an EW low vo l tage outdoor sensor can keep the HID light-

ing at a low level until the sensor detects a car driving into the lot or a person walking

t h rough the lot. This co n t r ol method is especially effe c t i v e for infre q u e n t l y used areas of

the parking lot like the back or side of the building. The EW sensor or multiple sensors

can simulta n e o u s l y co n t r ol seve ral fixture heads on the same pole. In this way, outdoor

HID lighting can be co n t ro l l ed just like warehouses or gymnasiums.

B i - level HID co n t rol applica t i o n s

O u t d o o r

parking lo t

Four HID ballasts controlled by

two motion sensors

Legrand Bi-level HID Lighting Control Design and User guide

Legrand Bi-level HID Lighting Control Design and User guide

Legrand Bi-level HID Lighting Control Design and User guide

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