User manual

Chapter 3. Installation
3-2 FMUX-01Mar 2003
3.4 Electrical Installation
3-4-1. Power connection
For a model with AC power supply, AC power (90~250VAC) is supplied to the
MULTIPLEXER UNIT through a standard IEC 3-prong receptacle, located on the rear of
the chassis. For a model with DC power supply, DC –48V (20~60VDC) is connected to the
terminal block, observing the proper polarity. In the AC/DC model, both IEC receptacle and
DC terminal block are provided for dual power operation. The MULTIPLEXER UNIT
should always be grounded through the protective earth lead of the power cable in AC
installations, or via the frame ground connection for DC installations.
Figure 3-2 : Supply connections, AC/DC model shown
Mains
Switches
AC IN
Connector
DC IN
Terminal
Block