legrand BCS-WS-II-EM-IN-28431r4 Digital Lighting Management Control Panel Instructions
- June 1, 2024
- Legrand
Table of Contents
legrand BCS-WS-II-EM-IN-28431r4 Digital Lighting Management Control Panel Instructions
DESCRIPTION AND OPERATION
The Digital Lighting Management Control Panel (LMCP) lighting control panel with emergency shunt operation is designed to allow the normal control of the emergency lighting for day to day operation of the building. The panel is configured to guarantee that the emergency lighting served by the panel will always turn on upon loss of normal power regardless of the controlled state of the relays in the panel.
Under normal operation of the lighting control panel, the SPST relays will control the lighting based on the sequence of operation designed for the panel. This could include schedules, overrides from low voltage wall switches, and daylight or occupancy sensors connected to the panel. Normal control is allowed because the contacts of the shunt contactors are held open by the normal power sense circuit.
When the normal power sense circuit stops supplying voltage (power outage),
the normally closed contacts on the shunt contactors close thus bypassing the
switching action of the SPST relays.
When normal power is restored, the normal power sense circuit will once again
supply power to open, and hold open, the contacts on the shunt contactors thus
restoring the normal control operation of the panel.
The LMCP24 (maximum 24 loads) and LMCP48 (maximum 48 loads) may be ordered with up to 24 EM relays. For either panel size, EM relay shunt wiring begins at the highest load number, working backwards until the quantity of requested EM relays is met. Loads 1-12 are located top left, 13-24 are located top right, 25-36 are located bottom left, and 37-48 are located bottom right.
As an example, an LMCP48 ordered with 20 loads and 8 EM relays would result in
loads 48 through 40 (bottom right relays) being wired for EM operation. Loads
1 through 12 (top left 12 relays) would be installed for normal operation (top
left).
For an overview of the entire system and the documentation forms, refer to the
LMCP Installation Instructions and Operation Manual. If you have any
questions, call our Service Team.
INSTALLING THE EMERGENCY RELAY PANEL
LMCP panels ordered with the Emergency Shunt option are shipped completely assembled and should not require disassembly in the field for proper installation. Panels equipped with normal and emergency relays require that they be separated by a metal barrier. Install the supplied barrier(s) in the appropriate location(s) as shown on the detail drawing in the project submittal documentation. Refer to the Installation Instructions shipped with your panel for other installation information.
- Mount the panel enclosure to the wall using hardware (not supplied) capable of supporting a minimum of 100 pounds.
- Mount the interior into the enclosure using the supplied hardware.
- Connect the panel’s power supply to a dedicated 20 amp circuit from the lighting panel serving the same section of the building as the LMCP.
- Connect the branch circuit feed wires from the emergency panel to the LINE side terminal on each relay. Connect the LOAD side of each relay to the corresponding load circuit. Care should be taken to make sure the factory wire connections to the relays remain connected as shipped.
- Connect the normal power sense leads from the shunt contactors in the relay panel to the same dedicated 20 amp lighting panel circuit as connected to the DLM Emergency Control Panel. Note that these connections are voltage sensitive and ensure that all voltages match.
- Test the shunt operation of the panel by cycling the 20 amp breaker feeding the normal power sense circuit in the LMCP panel. An audible noise should be noted when power is applied to the normal power sense circuit. This is the sound of the shunt contactors opening to allow normal operation of the relays. Likewise, an audible noise should be noted when the normal power sense circuit is turned off (this simulates a power failure) and the contactors close, thus shunting the contacts of the relays and turning on all the emergency lighting controlled by this panel. Check that the emergency lighting is On when normal power is turned off. Additionally, for LMCPx-10V dimming panels, dim the lighting to 50% while normal power is On, then check to see that lighting goes to 100% when normal power is Off.
WARRANTY INFORMATION
Wattstopper 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 Wattstopper 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.
No. 28431 – 07/23 rev. 4
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www.legrand.us/wattstopper
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