Legrand LC-100 version 2, Intelligent Power Pack Installation guide

Brand: Legrand

Model: LC-100 version 2, Intelligent Power Pack

Type: Installation guide

I n t elligent Power Pa c k

Model#:

LC-100

Version 2

SPECIFICATIONS

Input Power. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 2 0 / 2 7 7 VAC, 60Hz

Relay Output Ratings (two relays)

@ 1 2 0 VAC, 60Hz . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 0 A Tungsten or Ballast

@ 2 7 7 VAC, 60Hz. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2 0 A B a l l a s t

@ 2 5 0 VA C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1 H P

Output Power with relay connected . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1 5 0 m A @ 2 4 V D C

E n v i r o n m e n t a l . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Acc eptable for use in plenum

Operating Te m p e r a t u r e . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32° to 104°F (0° to +40°C)

Operating Humidity. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5% to 95%, non-condensing

Isolated Relay Output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Two, form C, 1A@24VDC

Dimming Output. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Two 0-10V dimming channels

Up to 100 ballasts per channel

Burn-in for lamps & ballast. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .100 hours of no dimming

Page 2

CONTENTS

Speciﬁcations......................................................................................................1

INTRODUCTION ...................................................................................................3

Welcome to the Intelligent Power Pack............................................................................3

Box Contents .............................................................................................................3

Description ........................................................................................................................3

INSTALLATION ....................................................................................................4

General Installation Information.......................................................................................4

Mounting the LC-100 ................................................................................................4

Connecting the LC-100 to the Electrical System .....................................................5

Low Voltage Wiring............................................................................................................6

General Wiring Notes................................................................................................6

Low Voltage Input Wiring .........................................................................................6

Control for Dimming Ballasts ...........................................................................................6

100 Hour Burn-In ......................................................................................................6

Trimming Ballast Voltage Levels..............................................................................6

LC-100 OVERVIEW...............................................................................................7

Control Input Features ......................................................................................................7

Switch Inputs (ON, OFF)............................................................................................7

Occupancy Sensor Input (OCC SNS) ........................................................................8

Photocell Input ON/OFF Control (DAYLT) * ..............................................................8

* Daylight Dimming Control.....................................................................................8

Load Shed Input (SHED) ...........................................................................................9

Occupied/Unoccupied Input (UNOCC) ......................................................................9

CONFIGURATION DIP SWITCHES...........................................................................10

Switch Block A Conﬁguration DIP Switches...................................................................10

Switch Block B Conﬁguration DIP Switches...................................................................12

LC-100, Revision 2 Intelligent Power Pack Speciﬁcation Addendum B.............14

Overview...........................................................................................................................14

Invert Unoccupied Input ..................................................................................................14

Lock ON using Shed input...............................................................................................14

Outputs ............................................................................................................................16

Isolated Relay Contact ............................................................................................16

Pilot Light Output....................................................................................................16

Dimming Ballast Output Wiring......................................................................................17

Power Supply...................................................................................................................18

Power Failure Features...................................................................................................18

Modes of Operation .........................................................................................................18

TROUBLESHOOTING..........................................................................................19

Non-working switch ........................................................................................................19

Lights fail to shut off in After Hours mode.....................................................................19

Lights won’t dim..............................................................................................................19

Warranty Information .......................................................................................20

Ordering Information ........................................................................................20

Call 800.879.8585 for Technical Support

Page 3

INTRODUCTION

Welcome to the Intelligent Power Pack

The LC-100 is a modular device that provides distributed control of lighting and electrical

loads in a building. Its primary purpose is to give occupants convenient control of these loads

while automatically saving energy.

B o x Conte n t s

• LC-100 Power Pack

• Installation Instructions

Description

The LC-100 provides automatic control as well as manual control inputs for lighting, air

conditioning, fans, etc. The low voltage (Class 2) inputs of the LC-100 may use any switch or

device contact as a signal to operate the relay outputs. It accepts inputs from:

• Building Automation Systems (B.A.S.)

• Occupancy Sensors

• Manual Switches

• Time Switches

• P h o t o c e l l s

• and other devices

The LC-100 is acceptable for use in

plenums. It can be mounted close to

the electrical load it controls,

eliminating costly wiring.

Page 4

INSTALLATION

General Installation Information

• All power must be turned off prior to installation or service.

• More than one disconnect may be required to de-energize power to the LC-100.

• External circuit protection to the LC-100 is required (e.g., circuit breaker).

• Installation shall be in accordance with all applicable regulations, wiring practices, and

c o d e s .

• Care should be taken to separate high voltage power from low voltage (Class 2) control

w i r i n g .

Mounting the LC - 1 0 0

The LC-100 should be placed in an accessible ceiling space or location that is close to the

load. It can be installed directly above the controlling switches.

Mount the LC-100 to a standard J–box using the 1/2" nipple and locknut provided with the

L C - 1 0 0 .

CAUTION

RISK OF ELECTRIC SHOCK

WARNING

IMPROPER INSTALLATION OR CONNECTION OF

THE LC-100 MAY RESULT IN SERIOUS INJURY AND/OR

DAMAGE TO THE LC-100 AND OTHER DEVICES

WARNING

DO NOT DRILL INTO THE LC-100 ENCLOSURE

Call 800.879.8585 for Technical Support

Page 5

Figure 2.1: Connecting the LC-100 to

the building’s electrical system

Connecting the LC-100 to the Ele c t r i cal Syste m

All LC-100 line voltage wiring extends through the 1/2" chase nipple into an installer supplied

J–box. Connection to these wires should be made using wire nuts or a similar approved

method.

The LC-100 control power is dual voltage (120VAC or 277VAC). Connect line voltage power

to the black wire. The control power for the LC-100 may or may not be shared with the power

switched to the load.

Output wires from the LC-100, red wires (Relay output #1), and yellow wires (Relay output

#2) are not sensitive to which is line and which is load.

Page 6

Low Voltage Wiring

G e n e ral Wiring Note s

Remove the cover from the LC-100 to access the connectors and conﬁguration switches in

the low voltage section. All input/output wiring in this section must be low voltage, Class 2

wiring. Refer to local codes regarding Class 2 wiring practices. Do not run low voltage

wiring with line voltage or power wiring.

Use the concentric 1/2" or 3/4" knockout openings to bring wiring into the low voltage section.

If the low voltage wiring must be run in conduit, connect the LC-100 to the low voltage wiring

through a junction box. Do not directly connect conduit runs to the low voltage section of the

LC-100. Do not use the LC-100 low voltage wiring compartment as a raceway or junction box

for low voltage wiring.

L ow Vo l t age Input Wiring

Low voltage wiring should be stranded,18-22 gauge, plenum rated wire. Wiring distances to

switch inputs may be up to 5,000 feet. This wire is not required to be twisted or shielded.

Control for Dimming Ballasts

The LC-100 provides two 0-10V channels for driving 0-10V dimming ballasts. Up to 100

ballasts can be connected to each channel. Switch #4 conﬁg. A enables Dimming. Daylight

dimming control can be provided by an optional LS-301 Photosensor (see page 8).

100 Hour Burn-In

Some lamp manufacturers recommend that upon initial installation, the lamps undergo a 100

hour burn-in period. During the burn-in period, the ballasts operate at full power, without

dimming. The lamps can be turned on and off, but must operate at full power when on. Use

C o n ﬁguration Switch #8 to initiate the burn-in period.

Trimming Ballast Vo l t age Leve l s

Two potentiometers on the LC-100 are used to trim dimming channel output levels. Both

potentiometers have a range from 1V to 10V.

The low limit for load shed dimming operation is set with the SHED potentiometer. When 24V

is present on the SHED control input, both 0-10V channels ramp down to the voltage level set

by the potentiometer.

Dimming channel maximum output level is trimmed down using the MAX potentiometer. T h i s

prevents the dimming channels from going above the set maximum level under any

circumstance.

N o r m a l l y, the SHED potentiometer is set to provide a lower output voltage than that set in the

MAX potentiometer.

Figure 2.2: Low voltage wiring section of the LC-100

Dimming Control

Channel 1

Channel 2

Dimming Control Outputs

Conﬁguration DIP Switches

Potentiometers

Relay Output 1 Relay Output 2

System Control Inputs

Conﬁg. A Conﬁg. B

Switch Inputs

Call 800.879.8585 for Technical Support

Page 7

LC-100 OVERVIEW

The way that the LC-100 operates depends on several factors: Control Input wiring (which

includes Switch Input and System Control Input wiring), Dimming Control and Relay Output

wiring, and feature selection as determined by the Conﬁguration DIP Switches.

Figure 2.2 on page 6 shows the location of LC-100 components. Refer to the Control Input

sections that follow for terminal connection wiring diagrams and consult the

C O N F I G U R ATION DIP SWITCHES section of this manual for setting and operational

information. Output wiring is described and illustrated near the end of this manual, pages 16-

18.

Control Input Features

The LC-100 accepts a positive DC voltage from 5 to 24V, as a signal to its switch (ON, OFF)

or system control inputs (OCC SNS, SHED, DAY LT, UNOCC). The voltage must be

referenced to an LC-100 system control COMMON terminal. Each input is described in the

sections that follow.

S w i t ch Inputs (ON, OFF)

The Relay Output terminal blocks each contain independent dedicated Switch Inputs (ON,

OFF). A switch connected to the ON and OFF terminals directly operates the corresponding

relay output. These terminals allow operation with three switch types. These switch types are:

1) Standard Maintained switch (Figure 3.1);

2) Momentary ON-Momentary OFF switch (Figure 3.2); and

3) Momentary Push button switch (Figure 3.3).

Switch #2 conﬁg. A determines if operation of the switch can turn lights off during occupancy

periods.

Figure 3.1: Input wiring for

Standard Maintained Switch

Figure 3.2: Input wiring for

Momentary ON-Momentary OFF

Switch

Figure 3.3: Input wiring for

Momentary Push Button Switch

Page 8

O c cupancy Sensor Input (OCC SNS)

The OCC SNS input connects to an occupancy sensor. When the sensor detects occupancy,

it signals the LC-100 with 24VDC on the OCC SNS input.

If DIP switch #3 conﬁg. A is OFF (set for Manual ON) the sensor cannot turn on the relay

outputs; it can only turn them off. A signal on the switch inputs or other device input must be

used to turn on the relay outputs.

If DIP switch #3 conﬁg. A is ON (set for Auto ON), both relay outputs will automatically turn on

when the occupancy sensor detects occupancy.

No matter which way DIP switch #3 conﬁg. A is set, when occupancy is no longer detected

and the sensor time delay expires, it removes the 24VDC signal on the OCC SNS input and

both relay outputs turn off. If DIP switch #1 conﬁg. A is off (blink warning enabled) lighting

shuts off 5 minutes after the 24VDC signal is removed from the OCC SNS input.

P h o t o c ell Input ON/OFF Control (DAY LT) *

The DAY LT input connects to a photocell for ON/OFF daylighting control of relay output #1.

D I P switch #5 conﬁg. A ( D AY LT) must be ON to enable daylighting control, otherwise the input

has no effect on the relay outputs.

When the available daylight drops below the light level settings on the photocell, the photocell

provides 24VDC to the input. The LC-100 then allows another control input such as a switch,

occupancy sensor, time clock or B.A.S. to turn on the lights connected to relay output #1.

When adequate daylight is present, the photocell removes the 24VDC signal from the input

and the LC-100 turns off the lights connected to relay #1.

Figure 3.4: Input wiring for

Occupancy Sensor

* Daylight Dimming Contro l

The WattStopper LS-301 Dimming

Photosensor can provide closed loop

dimming control to loads on relay

output #1 and/or relay output #2.

The LS-301connects directly to the

0-10V ballast control, and shares the

+24V control input with the occupancy

sensor and momentary switch.

D I P switch #4 conﬁg. A ( D i m m i n g )

must be ON to enable dimming. T h e

LS-301 will not dim the load lower than

the SHED potentiometer setpoint.

Consult technical support for

application assistance.

Figure 3.5: Input wiring for

Photocell

Call 800.879.8585 for Technical Support

Page 9

Load Shed Input (SHED)

The SHED control input connects to a building automation system (BAS) that signals a

reduction in power consumption. As long as 24VDC is provided to the SHED terminal, the

LC-100 is in load shed mode. Load shed operates in one of two ways, depending on the

setting of switch #4 conﬁguration A (labeled DIMMING).

With switch #4 c o n ﬁg. A O F F (Dimming disabled), loads on relay #1 are turned off and they

are prevented from turning on through other control means until the 24VDC input is removed

from the SHED terminal. Only non-critical loads should be connected to Relay Output #1.

When 24VDC is removed from the SHED input, Relay Output #1 is restored to the state

required by the most recent control or manual switch input. Conﬁguration switch #4 conﬁg. A

must be OFF to provide load shed from relay #1. When the SHED input receives a 24VDC

signal, the SHED green LED will turn on. When this input is inverted by turning on switch #1

c o n ﬁg. B, LED will still turn on green with a 24VDC signal on this input.

When switch #4 c o n ﬁg. A is O N , Dimming is enabled. The dimming feature provides two 0-

10V channels for driving 0-10V dimming ballasts. These work in conjunction with the relay

outputs for dimming and providing on/off control to ballasts. When Dimming is enabled and

24V is present on the SHED input, both 0-10V channels ramp down (over a 2 second or 60

second period based on DIP switch settings) to the minimum output voltage as set using the

“SHED” potentiometer. If the channel voltage is already below the voltage set on the SHED

p o t e n t i o m e t e r, the channel output voltage will remain at the lower voltage. When 24VDC is

removed from the SHED input the dimming channels ramp back to the voltage output level

set prior to the SHED signal.

O c c u p i e d / U n o cc u p i e d Input (UNOCC)

This input connects to contacts from a time clock or building automation system that provides

a 24VDC signal during a scheduled time. This indicates an unoccupied, or After Hours period.

When the UNOCC input receives a 24VDC signal, the LC-100 goes into After Hours mode

(see Modes of Operation, page 18). LC-100 responses during the After Hours mode depend

on DIP switch settings as well as signals received on other system control inputs. When the

UNOCC input receives a 24VDC signal, the UNOCC green LED will turn on. When this input

is inverted by turning on switch #2 conﬁg. B, LED will still turn on green with a 24VDC signal

on this input.

If conﬁguration switch #3 conﬁg. A ( A U T O ON) is on, the relay outputs turn on when the

24VDC signal is removed from the UNOCC input. This is used to turn on lighting at the

beginning of occupied time periods. A 24VDC signal on this input causes the LC-100 to enter

After Hours mode.

Figure 3.7: Input wiring for

Time Clock or Building

Automation System (

B . A . S . )

Figure 3.6: Input wiring for

Load Shed

Page 10

If conﬁguration switch #3 conﬁg. A is off, removing 24VDC will not change the state of relay

outputs but takes the LC-100 out of After Hours mode. See Modes of Operation on page 14

for a further description of the After Hours mode of operation.

S i m i l a r l y, an Invert Occupied/Unoccupied Input (INVERT UNOCC) is available using switch #2

c o n ﬁg. B. this allows for ﬂexibility in connecting with Normally Open (NO) or Normally Closed

(NC) relays. Please refer to the section “Conﬁguration DIP Switches, Switch #2 Conﬁg. B” for

proper settings.

CONFIGURATION DIP SWITCHES

The conﬁguration DIP switches deﬁne the operation of the LC-100. The factory default settings

for these switches are all OFF. There are two sets of conﬁguration switches. Conﬁg. A a n d

C o n ﬁ g. B (see Figure 2.2, page 6) are described in the sections that follow.

Switch Block A Conﬁguration DIP Switches

Switch Block A on the LC-100 has eight DIP switches. Figure 3.8 illustrates the DIP s w i t c h

functions. All features apply to both relay outputs, except for DIP switches #4 and #5. When

D I P switch #4 conﬁg. A is OFF (dimming off), only relay output 1 turns off during Load Shed.

When DIP switch #5 conﬁg. A is ON, Daylighting control is enabled for relay output #1.

Following are descriptions of each DIP switch function.

Switch #1 Conﬁg. A (BLINK DISABLE) enables or disables the blink warning for the A f t e r

Hours mode. This blink, a momentary lighting shut off (or dimming, if switch #4 conﬁg. A is on)

warns occupants that the lighting will shut off in 5 minutes. The After Hours mode is initiated

when either the occupancy sensor connected to OCC SNS terminal no longer detects

o c c u p a n c y, or the time clock or building automation system (B.A.S.) provides a +24VDC input

to the UNOCC terminal.

To enable the blink warning, place conﬁguration switch #1 conﬁg. A in the OFF position. To

disable the blink warning, place switch #1 conﬁg. A in the ON position. When disabled, the

relay outputs immediately turn off when the LC-100 enters the After Hours mode, or the

occupancy sensor no longer detects occupancy.

Switch #2 C o n ﬁg. A (ON ONLY) determines whether the user can turn the lights off as well

as on, during occupancy periods. Occupancy periods are determined by signals from either an

external clock or B.A.S. connected to the UNOCC terminal, or an occupancy sensor

connected to the OCC SNS terminal. To disallow turning off the lights during occupancy

CAUTION

DISABLE THE BLINK WARNING FOR OUTPUTS

CONTROLLING LOADS SUCH AS HID LAMPS,

AIR CONDITIONING, FANS AND OTHER SIMILAR LOADS.

Figure 3.8: Conﬁguration A

DIP Switches

Call 800.879.8585 for Technical Support

Page 11

periods, set switch #2 conﬁg. A to ON. To allow the user to turn the lights on and off during

occcupancy periods, set switch #2 conﬁg. A to OFF. This may be used for applications with

public switch locations to prevent lights from accidentally being turned off .

Switch #3 Conﬁg. A (A U TO - O N) allows the LC-100 to turn on its relay outputs based on

input from an external clock, B.A.S. or occupancy sensor. Set switch #3 conﬁg. A to ON to

allow either an occupancy sensor on the OCC SNS input or a B.A.S. or external clock

connected to the UNOCC input to turn relay outputs on. Set switch #3 conﬁg. A to OFF to not

allow these devices to automatically turn on the relay outputs, so that only manual switches

may turn on the relay outputs.

Switch #3 conﬁg. A is disabled when switch #7 conﬁg. B is turned ON. It allows Automatic ON

for relay #2 (refer to switch #7 conﬁg. B on page 13 for more details).

Switch #4 C o n ﬁg. A (D I M M I N G) should be set to ON whenever controlling 0-10V ballasts.

When switch #4 conﬁg. A is ON, dimming output is provided at both dimming channels when a

load shed input is received. It also enables the switch inputs to dim lights up and down

manually by pressing and holding the connected momentary switches. When dimming is

enabled and the Blink Warning is enabled (switch #1 conﬁg. A is OFF), the Blink Warning dims

the output of both channels down then back up to warn that the lights will turn off in 5 minutes.

When switch #4 conﬁg. A is OFF and a 24V signal is received at the SHED control input, relay

#1 opens to shed 100% of its load.

Switch #5 C o n ﬁg. A ( D AY LT) daylighting enables relay output #1 to turn on and off

depending on signals from the photocell input (DAY LT). The photocell DAY LT input does not

directly turn on relay output #1. Instead, it works together with other control inputs to turn on

relay #1. The photocell has no effect on relay output #2.

With switch #5 conﬁg. A ON, two conditions must be met to turn on relay output #1:

• The daylighting photocell connected to the DAY LT input must signal that it is dark by

providing a 24VDC signal on the input.

• There must be an on signal from another control input associated with relay output #1. T h e

signal can be from a switch on the ON/OFF inputs, an occupancy sensor on the OCC SNS

input or a time clock/B.A.S. signal on the UNOCC input.

If any of these inputs signal for relay output #1 to turn off, it will turn off, regardless of the

daylighting photocell detection of dark. If the photocell signals that it is light, relay output #1

turns off .

When switch #5 conﬁg. A is OFF, the DAY LT input does not affect relay output #1. The LC-100

will operate solely based on signals from switch ON/OFF, occupancy sensor OCC SNS and

UNOCC inputs.

Switches #6 C o n ﬁ g. A (TM OVRD1) and #7 C o n ﬁ g. A (TM OVRD2) provide time override

settings for the After Hours mode (see Figure 3.9). The After Hours mode begins when the

lights are scheduled to turn off, as determined by an external clock connected to the UNOCC

terminal. When the user manually overrides the lighting output by turning the lights back on

when in After Hours mode, the lights will automatically turn off after the time set using these

s w i t c h e s .

Figure 3.9: Setting the Time

Override conﬁguration switches

Page 12

Switch #8 Conﬁg. A ( B U R N IN) when turned ON, initiates a 100-hour burn-in period for

dimming ballast loads connected to the LC-100 dimming channels. Some lamp and ballast

manufacturers recommend running lamps at full output for their ﬁrst 100 hours of operation to

ensure long lamp life. During the burn-in time, full 10V output is provided to the dimming

ballasts whenever the output is on. All dimming inputs such as load shed and manual switch

dimming are ignored until both relay outputs to the ballast have operated for a total of 100

hours, or until switch #8 conﬁg. A is returned to the OFF position. During the burn-in period,

manual switches, occupancy sensors, daylighting, and timed occupancy controls provide

o n / o ff control. After the 100-hour burn-in period has expired, lamps can be dimmed in normal

operation. There is no need to turn switch #8 conﬁg. A o ff to resume normal dimming

operation. It automatically reverts to normal control after 100 hours.

Switch Block B Conﬁguration DIP Switches

C o n ﬁ guration B on the LC-100 has eight DIP switches. Figure 3.10 below illustrates the DIP

switch functions and a description follows:

Switch #1 Conﬁg. B (SHED INV) operates as a logic selector to the SHED INV input. When

switch #1 conﬁg. B is OFF (default setting), the LC-100 operates normally:

• Absence of 24VDC signal = No load shed and no emergency override mode

• Presence of 24VDC signal = Active load shed or emergency override mode

When switch #1 conﬁg. B is ON, the load shed input (SHED) is inverted:

• Absence of 24VDC signal = Active load shed or emergency override mode

• Presence of 24VDC signal = No load shed and no emergency override mode

Please refer to the “Load Shed Input (SHED)” paragraph on page 9 of this installation

instruction for further details.

Switch #2 Conﬁg. B (UNOCC INV) operates as a logic selector to the UNOCC input. When

switch #2 conﬁg. B is OFF (default setting), the LC-100 operates normally:

• Absence of 24VDC signal = Normal mode

• Presence of 24VDC signal = After hour mode

When switch #2 conﬁg. B is ON, the occupied/unoccupied input (UNOCC) is inverted:

• Absence of 24VDC signal = After hour mode

• Presence of 24VDC signal = Normal mode

Please refer to the “Occupied/Unoccupied Input (UNOCC)” paragraph on page 9 of this

installation instruction for further details.

Switch #3 Conﬁg. B ( FADE DOWN) allows to select different fade down times before lights

reach the level set by the SHED potentiometer. If switch #3 conﬁg. B is ON, the fade down

time is 2 seconds, and when turned OFF the fade down time is 60 seconds (default setting).

Figure 3.10:

Switch Block B

C o n ﬁgu ration DIP S w i t c h e s

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Page 13

Switch #4 Conﬁg. B ( FADE UP). Similarly to switch #3 conﬁg B, switch #4 conﬁg. B allows to

select the fade up time before lights reach the level set by the SHED potentiometer. If switch

#4 conﬁg. B is ON, the fade up time is 2 seconds, and when turned OFF the fade up time is

60 seconds (default setting).

Switch #5 Conﬁg. B (EMERG OVRD). This Lock ON using shed input feature allows the

LC-100 to turn ON both relay outputs 1 & 2, ramp the 0-10V outputs to maximum

potentiometer setting, and not let any other input, time signal or otherwise, whether external or

internal, turn the relay outputs OFF. This function is invoked through the shed input when

switch #5 conﬁg. B is turned ON. Application of this feature is for emergency or ﬁre alarm

override to force lighting ON and allow safe exit of a building. In the event of a power loss

when the emergency override mode is on, the LC-100 will restore with its emergency override

mode still in eff e c t .

When switch #5 conﬁg. B is turned ON, the shed input no longer provides load shed

f u n c t i o n a l i t y. However, the load shed invert selector (switch #1 conﬁg. B) is still active to select

input logic. After the Shed input is high/closed and goes low/open, all inputs become active to

control the relay outputs, but the relay outputs remain ON and the 0-10V channels remain at

10V until the next action from any input takes place. There is no “automatic restore” back to

the last or previous state.

When switch #1 conﬁg. B (SHED INV) is ON and switch #5 conﬁg. B (EMRG OVRD) is ON,

the logic of the shed input to Lock ON relay outputs is inverted. Low/open on shed input locks

ON relay outputs and disables inputs and high/closure on shed input is required for the LC-

100 to operate normally.

Switch #6 Conﬁg. B (PWR UP FULL) when turned ON, turns on 0-10V light level outputs to

maximum light level setting after power is restored. If switch #6 conﬁg B is OFF, the light will

go back to its last preset level before power was lost.

Switch #7 Conﬁg. B ( M A N / A U TO). This feature “Manual ON relay output 1, Auto ON relay

output 2” is enabled by turning ON Switch #7 Conﬁg. B. The LC-100 operational logic will

ignore the setting of the switch #3 conﬁg A ( A U T O ON). When switch #7 conﬁg B dip is OFF,

Both relay outputs 1 & 2 respond to Manual or Auto ON as set by switch #3 conﬁg A .

This feature enables relay output 1 to only be turned ON when a signal is received from the

switch ON input corresponding to relay output 1. A high/closure (24VDC) on the occupancy

sensor input (OCC SNS) or a low/opening on the time clock input (UNOCC) cannot turn relay

output 1 ON. All functionality for turning relay output 1 OFF remains as prior – switches,

occupancy sensors, time clocks, etc can all turn OFF this relay output.

This feature also enables relay output 2 to be turned ON automatically. A signal from the

switch input for relay output 2, a high/closure (24VDC) on the occupancy sensor input (OCC

SNS) or a low/opening on the time clock input (UNOCC) will turn relay output 2 ON. Again, all

functionality for turning relay output 2 OFF also remains as prior – switches, occupancy

sensors, time clocks, etc., can turn OFF this relay output.

All other functionality or operational sequences should remain the same.

Switch #8 Conﬁg. B (Not used). Presently this DIP switch is not used for any function and

should be left in the OFF state.

This chart is only intended to show the abbreviations used for the DIP switches of conﬁg. B:

Figure 3.11:

C o n ﬁg. B DIP

Switches A b b r e v i a t i o n s

Page 14

LC-100, REVISION 2

INTELLIGENT POWER PACK

Speciﬁcation Addendum B

Overview

This addendum to the LC-100 speciﬁcation has three objectives:

1. Provide ability to invert the state of the Un-Occupied input (UNOCC).

2. Add a feature that locks ON both relay outputs, and ignores signals from all other inputs

(like for a ﬁre alarm emergency lock on of lighting)

3. Add ability to control one relay output by manual ON control, while the other is automatic

ON control from occupancy sensor. This is requirement for CA Title 24 performance

c o m p l i a n c e .

Invert Unoccupied Input

Presently, the UNOCC input allows the LC-100 to function normally when the input is

low/open (no 24VDC on input) and enter “after-hour” mode when the input is high/closed

(24VDC on input). This allows the LC-100 to be connected to a set of contacts or relay for

time scheduled control. The contacts are usually controlled by time switch or clock which

open during normal operating hours (like 8am – 5pm) and close for after-hours (like at night

from 5pm – 8am the following morning).

The desired change is to allow dip switch #2 on the “conﬁg. B” dip switch block, to operate

as a logic selector to the Un Occ input.

So, with dip switch #2 OFF, the LC-100 operates as noted in the above paragraph:

• Low/open = Normal mode

• High/closed = After hour mode

With dip switch #2 ON, the logic of the input is inverted:

• Low/open = After hour mode

• High/closed = Normal mode

Lock ON using Shed input

This feature allows the LC-100 to turn ON both relay outputs 1 & 2, ramp the 0-10V outputs

to full 10VDC, and not let any other input, time signal or otherwise, whether external or

internal, turn the relay outputs OFF. This function is invoked through the Shed input when

conﬁg. B dip switch #5 (Lock-ON) is turned ON. Application of this feature is for emergency

or ﬁre alarm override to force lighting ON and allow safe exit of a building.

When dip switch #5 (Lock-On) is turned ON, the Shed input no longer provides load shed

functionality. However, the shed input logic dip switch (conﬁg. B dip block, switch #1) is still

active to select input logic. With conﬁg. B switch #5 ON and conﬁg. B switch #1 OFF, Shed

input low/open (no 24VDC on input) allows normal operation of the LC-100. All inputs,

timers and system logic should operate as normal. When the Shed input goes high/closes

(24VDC on input), the relay outputs are turned ON, the 0-10V inputs on both channels ramp

up to 10V immediately and the relay outputs are locked ON. Thereby not allowing any other

input from the switch inputs, Occ Sense input, Un Occ input, shut-off timer, etc., to affect the

relays. After the Shed input is high/closed and it goes low/open, all inputs become active to

control the relay outputs, but the relay outputs remain ON and the 0-10V channels remain at

10V until the next action from any input takes place. There is no “automatic restore” back to

the last or previous state.

When conﬁg. B dip switch #1 (shed logic switch) is ON and dip switch #5 (Lock-ON) is ON,

the logic of the shed input to Lock ON relay outputs is inverted. Low/open on shed input

locks ON relay outputs and disables inputs and high/closure on shed input is required for

the LC-100 to operate normally.

Call 800.879.8585 for Technical Support

Page 15

Following a power loss and upon restoration of power, while the LC-100 is in Lock-ON

(conﬁg. B switch #1 OFF, switch #5 ON, Shed input high/closed or conﬁg. B switch #1 ON,

switch #5 ON, Shed input low/open), the LC-100 performs the same Lock ON by forcing

both relay outputs ON, ramp 0-10V channels to 10V and ignore/lock out any signals from

inputs or system functions.

Manual ON relay output 1, Auto ON relay output 2

This feature enables relay output 1 to only allow the output to close or be turned ON when

a signal is received from the switch ON input corresponding to relay output 1. A high/closure

(24VDC) on the occupancy sensor input (OCC SNS) or a low/opening on the time clock

input (UNOCC) cannot turn relay output 1 ON. All functionality for turning relay output 1

OFF remains as prior – switches, occupancy sensors, time clocks, etc can all turn OFF this

relay output.

This feature also enables relay output 2 to be turned ON automatically. A signal from the

switch input for relay output 2, a high/closure (24VDC) on the occupancy sensor input

(OCC SNS) or a low/opening on the time clock input (UNOCC) will turn relay output 2 ON.

Again, all functionality for turning relay output 2 OFF also remains as prior – switches,

occupancy sensors, time clocks, etc., can turn OFF this relay output.

All other functionality or operational sequences should remain the same.

This feature will be enabled by turning ON conﬁg. B dip switch #7. When this this dip is ON

the LC-100 operational logic will ignore the setting of the AUTO ON dip switch from conﬁg.

A dip switch #3. When conﬁg. B dip switch #8 is OFF, Both relay outputs 1 & 2 respond to

Manual or Auto ON as set by conﬁg. A dip switch #3.

Figure 3.12:

C o n ﬁ g. B DIP

Switch Ta b l e

Page 16

Outputs

The LC-100 contains two line voltage relay outputs that are rated 20 amp tungsten at 120V, 20

amp ballast load at 277V and one HP at 250VAC. Wiring for these relay outputs is shown in

Figure 2.1 and Figure 3.13.

I s o l a ted Relay Conta c t

The LC-100 has one set of isolated relay terminals (NO/NC) for each relay output. T h e s e

relays open and close with the operation of the corresponding relay output. These relays are

rated for 1 amp at 24V.

P i l ot Light Output

The LC-100 contains Pilot Light outputs that turn on and off with the state of relay outputs #1

and #2. These outputs are for operating pilot lights in switches or other similar devices. T h e s e

outputs reference the LC-100 24VDC and have a maximum combined output current of

150mA.

N o t e : The maximum output current is reduced by the amount of current used for any other

devices connected to the LC-100. The 150mA maximum current is shared between the pilot

light voltage outputs and the external power available.

Figure 3.14: Wiring diagram for

Pilot Light output

Figure 3.13: Wiring diagram for

Isolated Relays

Call 800.879.8585 for Technical Support

Page 17

Dimming Ballast Output Wiring

Figure 3.15: Wiring diagram for Dimming Ballasts

For Daylight Dimming applications, see the Daylight Dimming

Control

instructions and wiring diagram on Page 8.

Page 18

Power Failure Features

When power is restored to the LC-100 following a power loss, the LC-100 executes a power-

up sequence. First, it checks all inputs for a 24VDC signal on the ON input. If there is a signal,

it turns on that relay output. If the relay output is not turned on from a closure on the input, it

then reverts to the ON/OFF state it was in prior to the loss in power.

Modes of Operation

There are two occupancy modes of operation of the LC-100 that are deﬁned by the state of

the UNOCC input.

The ﬁrst, O c c u p i e d mode, allows the LC-100 to turn lighting on or off through operation of the

switches or other devices that are used to control the LC-100. The LC-100 is in this mode

whenever there is not a 24VDC signal on the UNOCC input.

The other is the After Hours mode. A signal from a time clock or building automation system

connected to the UNOCC input on the LC-100 invokes this mode.

When the LC-100 enters After Hours mode, it will either turn the relay outputs off or blink the

output, depending on how switch #1 conﬁg. A is set (see Conﬁguration Switches, Switch #1

c o n ﬁg. A). If the OCC SNS input is receiving a 24VDC signal from an occupancy sensor, at

the time it enters After Hours mode, the LC-100 holds the relay outputs on and prevents it

from entering the After Hours mode until the sensor no longer detects occupancy.

In the After Hours mode, the LC-100’s relay outputs that are on will automatically blink

(assuming the blink warning feature has been enabled), wait ﬁve minutes for switch operation,

and then shut off if no switch operation is detected. In this mode, any time a switch turns the

lights on, the LC-100 allows the lighting to remain on until the override time expires (see

Figure 3.9 for setting the override time option). The LC-100 automatically initiates shut-off

without any further signal from another device other than the initiation of the After Hours mode

s i g n a l .

Figure 3.16: Wiring diagram for

Power output

Power Supply

Two +24VDC terminals on the System Control Input terminal block provide a 24VDC power

supply referenced to the LC-100 common. These terminals can be used to power other

devices such as occupancy sensors or photocells. They have a total shared current output of

150mA.

I M P O R T A N T !

The maximum current is reduced by the amount of current used

for pilot light outputs. The 150mA maximum current is shared

between the pilot light outputs and external power to devices.

Call 800.879.8585 for Technical Support

Page 19

TROUBLESHOOTING

Non-working switch

If the LC-100 is fully installed and connected to the switch(es) it will control — and the switch

itself fails to operate in response to LC-100 signals — there are a number of steps you can

follow to identify the problem.

First, conﬁrm that the LC-100 is correctly wired for the type of switch you are trying to control

(i.e., Standard Maintained, Momentary ON-Momentary OFF, or Momentary Push Button). See

ﬁgures 3.1, 3.2, 3.3.

If the wiring is correct, measure the open switch with a volt meter. You should see readings of

4-5VDC. If the meter does not produce these readings, this means the switch is not

c o n n e c t e d .

If the preceding aspects are all correct, the problem may be that the output is locked or

overridden from another device input. The locked or overriding device must be cleared before

it can operate the LC-100 output.

Lights fail to shut off in After Hours mode

Verify that the LC-100 is connected to a time clock or building automation system, and that the

clock is programmed to send a signal to the LC-100.

Lights won’t dim

Verify that conﬁguration switch #4 conﬁg. A is ON.

Check wiring to the 0-10VDC dimming channels and ballasts.

Is conﬁguration DIP switch #8 conﬁg. A ON? This puts the LC-100 into the 100-hour lamp

burn-in mode. If you are within the 100-hour operation period, none of the dimming methods

are allowed. The burn-in mode accumulates burn-in time ONLY when the lamps are on.

Therefore, if it has been more than 100 hours since commissioning the lighting system, but

the lights have been turned off periodically, the burn-in period will extend until the lights have

been on for the full 100 hours.

ORDERING INFORMATION

Catalog No. Description

LC-100, V.2 Intelligent Power Pack, 120/277VAC,60Hz

WARRANTY INFORMATION

Watt Stopper/Legrand warranties its products to be free of defects in materials and workmanship for

a period of ﬁve (5) years. There are no obligations or liabilities on the part of Watt Stopper/Legrand

for consequential damages arising out of, or in connection with, the use or performance of this

product or other indirect damages with respect to loss of property, revenue or proﬁt, or cost of

removal, installation or reinstallation.

2800 De La Cruz Boulevard, Santa Clara, CA 9 5 0 5 0

Technical Support: 800.879.8585 • 972.578.1699

w w w. w a t t s t o p p e r . c o m

07311 r1 03/2007

Legrand LC-100 version 2, Intelligent Power Pack Installation guide

Legrand LC-100 version 2, Intelligent Power Pack Installation guide

Legrand LC-100 version 2, Intelligent Power Pack Installation guide

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