Download Emergency Lighting Applications - iLumin Source Controllers Relay Panels

Application
Note
Emergency Lighting Applications
iLumin Source Controllers & Relay Panels
Overview
Emergency lighting circuits allow for occupant safety and egress in the event of a failure of a facilities primary power source, as
required by NFPA 101 Life Safety Code or other local building codes and standards. Designers may meet these requirements with
dedicated emergency lighting fixtures. These fixtures would be fed directly from emergency branch circuits or from internal power
sources (rechargeable battery packs are typical) when grid power has failed. In some implementations these fixtures are continuously illuminated. The alternative approach of utilizing the same fixtures for both normal and emergency lighting needs can lower
fixture count. Employing control devices to ensure that the fixtures are only illuminated when necessary will extend lamp and ballast
life and reduce energy consumption. Cooper Controls provides a number of products for use with iLumin lighting control panels that
facilitate this approach.
Panel Level Implementation
iLumin Source Controllers and Relay Panels are equipped with two dry contact inputs for emergency scene control. A contact
closure on these inputs will initiate a preprogrammed emergency scene. The loads affected by an emergency scene and their levels
are programmable. Output levels for an emergency scene are typically programmed at full on for a dimming panel. The emergency
scene will remain in effect, regardless of other system programming or inputs, until the contact closure is removed. The iLumin
Lighting Relay Module accessory is a UL924 listed device that is designed to operate in conjunction with an iLumin panel to provide
emergency lighting. The Lighting Relay Module senses normal power and provides a contact closure to the iLumin panel when
normal power is lost, triggering the emergency scene. Upon restoration of normal power the Lighting Relay Module will remove the
contact closure and the panel will resume normal operation. A typical implementation is shown in Figure 1.
Overcurrent Protection
/ Disconnect
UL1008 Transfer Switch
Emergency Power
Normal Power
SC120-12-UN-3P-ML-20
Lighting Load 1
Lighting Load 2
Lighting Load 3
Lighting Load 4
Lighting Load 5
Lighting Load 6
Lighting Load 7
Lighting Load 8
Lighting Load 9
Lighting Load 10
Lighting Load 11
Lighting Load 12
Lighting Relay Module
Contact
Closure
Input 1
Figure 1 – Typical Lighting Relay Module and Source Controller implementation
In this example a Source Controller is fed either normal or emergency power by an upstream UL1008 transfer switch. In the event of normal
power failure, the transfer switch would provide emergency power to the Source Controller. The Lighting Relay Module would force the Source
Controller to initiate the emergency scene until such time as normal power is restored. The Lighting Relay Module can be used in
conjunction with any iLumin Source Controller or Relay Panel to achieve a panel level UL924 listed emergency lighting implementation.
www.coopercontrol.com
203 Cooper Circle, Peachtree City, GA 30269
P: 800-553-3879
F: 800-954-7016
Emergency Lighting Applications
Application
Note
iLumin Source Controllers & Relay Panels
Circuit Or Fixture Level Implementation
Cooper Controls also provides solutions for implementing emergency lighting by circuit, as opposed to an entire panel. The Cooper
Emergency Power Control (CEPC) series of accessories are UL924 listed devices that facilitate emergency lighting implementations
by circuit or individual fixture. The CEPC-120 and CEPC-277 are solutions for non-dimming loads. These devices can be placed
downstream of an iLumin relay panel as shown in Figure 2.
CEPC
Line
Neutral
Blue
Blue/
White
Test
Emergency
Power
Switch
Yellow
Switch Leg
Blue/
White
Neutral
Black/
Orange
Red
Utility
Power
White
20A
Normal / Emergency
Lighting Load
Emergency
Power
Normal
Lighting Load
Neutral
iLumin SC-RP
Relay Card
Switch Leg
20A
Line
Load
Line
Normal
Power
Figure 2 – Typical non-dimming load CEPC implementation
Under emergency power conditions, the CEPC device feeds the normal/emergency fixture with power from the emergency power
source when power is lost on the normal power sense input. Under normal power condititions, the normal/emergency fixture is
controlled in conjunction with the normal fixtures by duplicating commands to the normal/emergency loads based off of activity on
the monitored switch leg.
www.coopercontrol.com
203 Cooper Circle, Peachtree City, GA 30269
P: 800-553-3879
F: 800-954-7016
Application
Note
Emergency Lighting Applications
iLumin Source Controllers & Relay Panels
The CEPC-D-F-S-120 and CEPC-D-F-S-277 are for use with dimmable loads. These devices provide a universal interface that allow
them to support 2-wire, 3-wire and 4-wire dimming loads. Designers only need to specify the operating voltage. A typical 3-wire
dimming load implementation is shown in Figure 3.
CEPC-D-F-S
Line
20A
Neutral
4
5
6
7
Emergency
Power
Switched Hot
8
Dimmed Hot
9
Test
Switch
Utility
Power
Neutral
10
X1
X2
Emergency
Lighting Load
1
2
Emergency
Power
3
iLumin SC-UN
Power Card
Hot
Switched Hot
Dimmed Hot
Neutral
Figure 3 – Typical 3-wire dimming load CEPC implementation
In this example the CEPC is sensing the presence of normal power on the Hot terminal of the SC-UN Power Card terminal block.
As long as normal power is present, the emergency fixture is controlled by the SC-UN. Upon loss of normal power the fixture is
switched to the emergency power source and brought to full intensity because both the switched and dimmed hot fixture leads are
tied to line of the emergency power source by the CEPC. Wiring for 2-wire and 4-wire loads will differ from this configuration.
Consult the CEPC specification sheet for wiring details.
Conclusion
With a properly designed and configured lighting control system it is possible to utilize the same lighting fixtures for both normal and emergency
applications. Cooper Controls provides UL924 listed solutions to permit designers to achieve this goal resulting in lower fixture counts and
increased energy savings.
www.coopercontrol.com
203 Cooper Circle, Peachtree City, GA 30269
P: 800-553-3879
F: 800-954-7016
ACC110115