Legrand LC-100 Intelligent Power Pack Installation guide
- Type
- Installation guide
Intelligent Power Pack
Model#:LC-100
Installation Instructions
SPECIFICATIONS
Input Power.......................................................................120/277VAC, 60Hz
Relay Output Ratings (two relays)
@120VAC, 60Hz ..................................................20A Tungsten or Ballast
@277VAC, 60Hz.......................................................................20A Ballast
@250VAC.............................................................................................1HP
Output Power with relay connected ....................................150mA@24VDC
Environmental...................................................Acceptable for use in plenum
Operating Temperature ....................................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
Copyright © 2003-2005 Watt Stopper/Legrand. All rights reserved.
Page 2
CONTENTS
Specifications......................................................................................................1
INTRODUCTION ...................................................................................................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
Outputs ............................................................................................................................12
Isolated Relay Contact ............................................................................................12
Pilot Light Output....................................................................................................12
Dimming Ballast Output Wiring..............................................................................13
Power Supply...................................................................................................................14
Power Failure Features...................................................................................................14
Modes of Operation .........................................................................................................14
TROUBLESHOOTING..........................................................................................15
Non-working switch ........................................................................................................15
Lights fail to shut off in After Hours mode.....................................................................15
Lights won’t dim..............................................................................................................15
Warranty Information .......................................................................................16
Ordering Information ........................................................................................16
Call 800.879.8585 or 972.578.1699 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.
Box Contents
• 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
• Photocells
• 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.
Copyright © 2003-2005 Watt Stopper/Legrand. All rights reserved.
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
codes.
• Care should be taken to separate high voltage power from low voltage (Class 2) control
wiring.
Mounting the LC-100
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
LC-100.
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
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Page 5
Figure 2.1: Connecting the LC-100 to
the building’s electrical system
Power
Neutral
Ground
Output 1
Load & Line
Output 2
Load & Line
WHT
GRN
RED
RED
YLW
YLW
BLK
LC-100
Enclosure
Connecting the LC-100 to the Electrical System
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.
Junction
box
BLK Power
WHT Neutral
GRN Ground
RED Output 1
RED Load & Line
YLW Output 2
YLW Load & Line
LC-100
Intelligent Power Pack
Model #:
800.879.8585 • 972.578.1699
0-10V Ballast
Daylight
Shed
Unoccupied
24VDC
Shed Signal
Time Clock
Photocell
Occupancy
Sensor 24VDC
Designed and Manufactured in USA
Industrial Control
Equipment 83AJ
01627r1
1 Blink Disable
2 ON Only when occupied
3 Automatic ON
4 Dimming
5 Daylighting Enable
6 Time Override #1
7 Time Override #2
8 100 Hour Burn In
Configuration Switches
Load Output Rating
120/277VAC, 60Hz, 1hp
20Amp Tungsten or Ballast
Auxiliary Output Rating
1Amp, 24VDC
24VDC
OFF
ON
Sensor
24VDC
Com
Gray
Violet
- +
Shed
Level
- +
Max
Level
Type 1 enclosure
For operation within a
Maximum Ambient of 60°C
Acceptable for use in plenum
Low voltage wiring
Copyright © 2003-2005 Watt Stopper/Legrand. All rights reserved.
Page 6
Low Voltage Wiring
General Wiring Notes
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.
Low Voltage 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. Configuration switch #4 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
Configuration Switch #8 to initiate the burn-in period.
Trimming Ballast Voltage Levels
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. This
prevents the dimming channels from going above the set maximum level under any
circumstance.
Normally, 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
OPEN
12345678
WARNING! ONLY CLASS 2 CIRCUIT WIRING ON CONNECTORS!
O
N
OPEN
12345678
ON
OFF
PILOT LT
RLY COM
RLY NO
RLY NC
+VI01
-GRAY1
COMMON
+24VDC
OCC SNS
SHED
DAYLT
UNOCC
+24VDC
COMMON
-GRAY2
+VIO2
RLY NC
RLY NO
RLY COM
PILOT LT
OFF
ON
RELAY OUTPUT 1
RELAY OUTPUT 2
SYSTEM CONTROL
Dimming Control
Channel 1
Channel 2
Dimming Control Outputs
Configuration DIP Switches
Potentiometers
Relay Output 1
Relay Output 2
System Control Inputs
Block A Block B
(not used)
Switch Inputs
Switch Inputs
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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. Note that Configuration DIP
Switch Block B is not used at this time, therefore, all references to DIP switch numbers refer
to their position on Configuration DIP Switch Block A.
Refer to the control input sections that follow for terminal connection wiring diagrams and
consult the Configuration DIP Switches section of this manual for setting and operational
information. Output wiring is described and illustrated near the end of this manual, pages
12-14.
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, DAYLT, UNOCC). The voltage must be
referenced to an LC-100 system control COMMON terminal. Each input is described in the
sections that follow.
Switch 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 Pushbutton switch (Figure 3.3).
Configuration DIP Switch #2 determines if operation of the switch can turn lights off during
occupancy periods.
Figure 3.1: Input wiring for
Maintained Switch
Momentary On/Momentary Off Switch
OFF
+24VDC
ON
LC-100 Terminals
Figure 3.2: Input wiring for
Momentary ON-Momentary OFF
Switch
OFF
+24VDC
ON
LC-100 Terminals
Maintained Switch
Figure 3.3: Input wiring for
Momentary Pushbutton Switch
OFF
+24VDC
ON
LC-100 Terminals
Momentary Push Button Switch
Copyright © 2003-2005 Watt Stopper/Legrand. All rights reserved.
Page 8
Occupancy 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 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 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 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 is off (blink warning enabled) lighting shuts off 5 minutes after
the 24VDC signal is removed from the OCC SNS input.
Photocell Input ON/OFF Control (DAYLT) *
The DAYLT input connects to a photocell for ON/OFF daylighting control of relay output #1.
DIP switch #5 (DAYLT) 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
Sensor Input
BLUE
RED
BLACK
+24VDC
COMMON
OCC SNS
LC-100 Terminals
* Daylight Dimming Control
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.
DIP switch #4 (Dimming) must be ON
to enable dimming. The LS-301 will not
dim the load lower than the SHED
potentiometer setpoint.
Consult technical support for
application assistance.
ON
OFF
PILOT LT
RLY COM
RLY NO
RLY NC
+V10
-GRAY
COMMON
+24VDC
OCC SNS
SHED
DAYLT
UNOCC
+24VDC
COMMON
Control
Output
Common
+24VDC
+24VDC
Occupancy
Sensor
Momentary
ON/OFF Switch
LS-301
0-10V
Ballast
LC-100 Terminals
Figure 3.5: Input wiring for
Photocell
Photocell Input
BLUE
RED
BLACK
+24VDC
COMMON
DAYLT
LC-100 Terminals
LS-100
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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 configuration switch #4 (labeled DIMMING).
With switch #
4 OFF (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 must be OFF to
provide load shed from relay 1.
When switch #
4 is ON, 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 30-second period) to the
minimum output voltage as set using the “SHED” potentiometer. If the channel voltage is
already below the voltage set on the SHED potentiometer, 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.
Occupied/Unoccupied 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 14). LC-100 responses during the After Hours mode depend
on DIP switch settings as well as signals received on other system control inputs.
If configuration switch #3 (AUTO 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.
If configuration switch #3 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.
Figure 3.7: Input wiring for
Time Clock or Building
Automation System (B.A.S.)
Timed Occupancy
+24VDC
UNOCC
LC-100 Terminals
Load Shed
Contact from BAS
or other Load
Shedding System
+24VDC
SHED
LC-100 Terminals
Figure 3.6: Input wiring for
Load Shed
Copyright © 2003-2005 Watt Stopper/Legrand. All rights reserved.
Page 10
Blink Warning Enabled
ON/OFF when Occupied
Manual On Only
Load Shed Relay 1 only
Daylighting Disabled
Time Override #1
Time Override #2
Normal Operation
Blink Warning Disabled
ON Only when Occupied
Auto-On using External Devices
Allows Dimming (both relays)
Daylighting Enabled
Time Override #1
Time Override #2
100 Hour Burn In
1
2
3
4
5
6
7
8
OPEN
12345678
BLINK DSBLE
ON ONLY
AUTO ON
DIMMING
DAYLT
TM OVRD1
TM OVRD2
BURN IN
O
N
OPEN/OFF
CLOSED/ONS#
Figure 3.8: Switch Block “A”
Configuration DIP Switches
CAUTION
DISABLE THE BLINK WARNING FOR OUTPUTS
CONTROLLING LOADS SUCH AS HID LAMPS,
AIR CONDITIONING, FANS AND OTHER SIMILAR LOADS.
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. Switch Block A
(see Figure 2.2, page 6) is described in the sections that follow. Switch Block B is not currently
used and it is reserved for future use.
Switch Block A on the LC-100 has eight DIP switches. Figure 3.8 illustrates the DIP switch
functions. All features apply to both relay outputs, except for DIP switches 4 and 5. When DIP
switch 4 is OFF (dimming off), only relay output 1 turns off during Load Shed. When DIP
switch 5 is ON, Daylighting control is enabled for relay output #1. Following are descriptions of
each DIP switch function.
Switch #1 (BLINK DISABLE) enables or disables the blink warning for the After Hours mode.
This blink, a momentary lighting shut off (or dimming, if DIP #4 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 occupancy, 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 in the OFF position. To disable the
blink warning, place switch #1 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 (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
periods, set switch #2 to ON. To allow the user to turn the lights on and off during occcupancy
periods, set switch #2 to OFF. This may be used for applications with public switch locations
to prevent lights from accidentally being turned off.
Switch #3 (AUTO-ON) 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 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 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.
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Page 11
Time/Switch 6 7
0.5 hours off on
1.0 hours on off
2.0 hours off off
4.0 hours on on
Figure 3.10: Setting the Time
Override configuration switches
Switch #4 (DIMMING) should be set to ON whenever controlling 0-10V ballasts. When switch
#4 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 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 is OFF and a 24V signal is received at the SHED control input, relay #1
opens to shed 100% of its load.
Switch #5 Switch #5 (DAYLT) daylighting enables relay output #1 to turn on and off
depending on signals from the photocell input (DAYLT). The photocell DAYLT 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 ON, two conditions must be met to turn on relay output #1:
• The daylighting photocell connected to the DAYLT 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. The
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 is OFF, the DAYLT 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 (TM OVRD1) and #7 (TM OVRD2) provide time override settings for the After
Hours mode (see Figure 3.10). 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 switches.
Switch #8 (BURN 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 is returned to the OFF position. During the burn-in period, manual switches,
occupancy sensors, daylighting, and timed occupancy controls provide on/of
f 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 of
f to resume normal dimming operation. It automatically reverts to
normal control after 100 hours.
Copyright © 2003-2005 Watt Stopper/Legrand. All rights reserved.
Page 12
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.
Isolated Relay Contact
The LC-100 has one set of isolated relay terminals (NO/NC) for each relay output. These
relays open and close with the operation of the corresponding relay output. These relays are
rated for 1 amp at 24V.
Pilot 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. These
outputs reference the LC-100 24VDC and have a maximum combined output current of
150mA.
Note: 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.
RLY
NC
(normally closed)
RLY
COM
To
external
device
LC-100
Ter minals
LC-100
isolated relay
Contacts rated at
1 amp @ 24V
AC/DC
RLY
NO
(normally open)
Figure 3.1
1: Wiring diagram for
Isolated Relays
Figure 3.12: Wiring diagram for
Pilot Light output
24V Pilot Light
LC-100
Te rminals
PILOT LT
ON
OFF
+24VDC
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Page 13
Dimming Ballast Output Wiring
LC-100
Intelligent Power Pack
Model #:
0-10V Ballast
Gray
Violet
BLK Power
WHT Neutral
GRN Ground
RED Output 1
RED Load & Line
YLW Output 2
YLW Load & Line
Type 1 enclosure
For operation within a
Maximum Ambient of 60°C
Acceptable for use in plenum
WARNING! ONLY CLASS 2 CIRCUIT WIRING ON CONNECTORS!
BLACK
Hot/Pow
er
GREE
N
Ground
WHITE Ne
utral
DISTRIBUTION
PANEL
VIOLET Channel 1
GRAY Channel 1
RED Output 1 Load
RED Ou
tput
1
Line/Ho
t
YELLOW Ou
tput
2
Line/Hot
YELLOW Output 2 Load
DIMMING
BALLAST
GRAY
VIOLET
GRAY
VIO
DIMMING
BALLAST
GRAY
VIO
DIMMING
BALLAST
GRAY
VIOLET
DIMMING
BALLAST
WAR
NING
CAP UNUSED LOAD WIRES
To more
Channel 2
Ballasts
(100 max.)
To more
Channel 2
Ballasts
To more Ballasts
To more
Channel 1
Ballasts
(100 max.)
To more
Channel 1
Ballasts
0-10VDC0-10VDC
TERMINALSTERMINALS
Channel 1
Channel 1
Channel 2
Channel 2
Figure 3.13: Wiring diagram for Dimming Ballasts
* For Daylight Dimming applications, see the Daylight Dimming
Control
instructions and wiring diagram on Page 8.
*
Copyright © 2003-2005 Watt Stopper/Legrand. All rights reserved.
Page 14
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, Occupied 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 is set (see Configuration Switches, Switch 1). 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 3.10 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
signal.
Figure 3.14: Wiring diagram for
Power output
To external
device
LC-100
Ter minals
+24VDC
COMMON
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.
IMPORTANT!
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 or 972.578.1699 for Technical Support
Page 15
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
connected.
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 is ON.
Check wiring to the 0-10VDC dimming channels and ballasts.
Is configuration DIP switch #8 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 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
95050
T
echnical Support: 800.879.8585 • 972.578.1699
www
.wattstopper
.com
01629 r2 01/2005
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Legrand LC-100 Intelligent Power Pack Installation guide
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- Installation guide
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