SUPREMATouch
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Description of the System
MSA
US
All units of the system and the sensors are supplied by the rack power supply unit (INT terminals)
or by the backup power supply (BAT terminals). This variant is used when there must be redun-
dancy in the power supply and the power of the unit installed in the rack (150 W) is sufficient for
all rack modules and the connected sensors.
Supply Plan D: External Power Supply Unit + Battery
All modules of the system and the sensors are supplied by the external power supply unit
(EXT terminals) or by the backup power supply (BAT terminals). This variant is used when the
power supply must be redundant and the power that can be supplied by the unit installed in the
rack is not sufficient to supply the system modules and the connected sensors. A maximum of
10 A can be supplied across the terminals (240 W system power).
Voltage Change-Over
Each module has a switch, which allows one of the available voltages (EXT, INT, BAT) through to
the module. The electronic components of the card and possibly the sensors connected to it are
supplied with this voltage.
Functions:
The voltage change over is delay free.
• If all the voltages are present, EXT is passed through.
• If EXT fails, INT is connected.
• If INT fails, BAT is connected.
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