12
LC Plus user manual
AC power
Warning! The safety of the installation is the responsibility of the installer. Read “Safety
Information” on page 3 before creating an installation or connecting an LC Plus panel to AC
mains power. Disconnect the entire installation from power before carrying out installation
work.
Warning! A maximum of FIVE LC Plus 2140 panels in total or TEN LC Plus 1140 panels in total
may be interconnected using power throughput connectors to form one chain that draws power
via the first panel’s power input cable. If you do not respect these limits you will overload cables
and components and create a serious safety hazard. Each time you reach the maximum
permitted number of interconnected panels in one daisy-chain and want to supply more panels
with power, you must create a new daisy-chain that draws power from a separate power outlet.
Warning! For protection from electric shock, the panel must be grounded (earthed). Power
distribution circuits must be fitted with a current overload fuse or circuit breaker and
ground-fault (earth-fault) protection.
Warning! When connecting LC Plus panels to single-phase power, use the supplied
single-phase power input and throughput cables with black connector shells. When connecting
to 2-phase power, use the supplied 2-phase power input and throughput cables with blue
connector shells.
Warning! LC Plus panels do not have a power on/off switch. They are powered on as soon as
mains power is applied to the power input connector and remain powered on until mains power
is shut down at source or disconnected from the panel. The external power switch or power
outlet socket must be located near the LC Plus and easily accessible so that power to the LC
Plus can easily be shut down or disconnected if necessary.
Important! Connect the panels in the installation and the P3 controller to AC mains power at the
same outlet point in the power distribution circuit, or you may experience ground/earth loop
problems or create differences in potential that can damage devices. Damage caused by
differences in potential if devices are incorrectly connected to power is not covered by the
product warranty.
Power and fuses
Warning! Fuses are not user-replaceable. Contact Martin Professional for assistance if you
suspect that a fuse has blown.
Warning! Double pole/neutral fusing.
The LC Plus features an auto-sensing switch-mode power supply that accepts 200-240 V nominal AC mains
power at 50 or 60 Hz. Connect the panel to power that is within this voltage range only.
The LC Plus can be connected to mains power in either:
• a single-phase 200-240 VAC system, or in
• a 3-phase delta system or split-phase mid-point neutral system using two phases to obtain 200-240 VAC.
Power and current figures are given in “Typical power and current” on page 25. Allow a sensible safety
margin when calculating the AC mains power distribution circuits current headroom required for an LC Plus
installation.
Each LC Plus 2140 panel is protected by one 10 AT (slow-blow) main fuse when connected using the
supplied single-phase power cables and protected by two 10 AT (slow-blow) main fuses when connected
using the supplied 2-phase power cables. Fuses are not user-replaceable.
Inrush current
Inrush current peaks are unlikely to occur at exactly the same time in multiple panel installations and only
have a duration of a few microseconds, but bear in mind that inrush current when powering on may cause
unintentional tripping of circuit-breakers, especially if these have poor resistance to momentary current
peaks.
