Multitech MultiModem DSVD MT5600DSVD Instruction Manual Page 16

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6 Assembling the SmartServer Hardware
Connecting the Screw Terminals
The SmartServer has two rows of screw terminals located on the top and bottom edges of the
enclosure. The screw terminals on the bottom row are numbered 1 to 12 (from left to right), and the
screw terminals on the top row are numbered 13 to 28 (from right to left). No that there is no polarity
for DC connections.
The screw terminals accept 0.22mm – 3.3mm (22 – 12AWG) gauge solid wire. The optimum
tightening torque for the screw terminals is 0.75 Newton-meters (6 lbs. in.) maximum. The ideal
flathead screwdriver tip width for use with the screw terminal connectors is 3mm (0.12”). Wires
should be stripped to a length of 7mm (0.28”). Optionally, you can use a soldering iron to tin the
stripped lengths of any stranded wires to prevent fraying and inadvertent contact with adjacent
terminals.
The screw terminals are divided into the following groups, which are each detailed in the subsequent
sections.
Power supply
L
ONWORKS network
RS-232/RS-485 serial ports
Digital outputs
Pulse meter inputs
Digital inputs
+12V<20mA output
Power Supply
The SmartServer is powered by a 100/240V AC, -6% to +10%, 50/60Hz VAC power mains
connection.
!
Safety Warning
When connecting a unit, always connect earth ground first, then Neutral, and then Line.
This minimizes the risk of shock or damage should power inadvertently be present on
Line.
!
Safety Warning
Fuse F350 in the SmartServer uses a Wickmann rated 250 VAC, .5 A, SLO-BLO, and it
is not field replaceable.
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