Making Power Connections - Rice Lake IQ plus 310A Installation Manual

Cable Tie
Communications
Cable Terminal
Block (J4)

2.4 MAKING POWER CONNECTIONS

The IQplus 310A is an AC-powered unit. Note that there is no on/off power switch; the unit
powers up when it is connected to the power source.
The power connector should only be mated with a three-contact connector where the third
contact provides ground connection. Failure to provide a continuous ground connection to
the unit may render it unsafe. To avoid damage to the unit from incorrect voltage, check
the voltage rating on the rear panel
label and the jumper settings
(Figure 5) to be certain the settings
match the local voltage. If no
changes are necessary, turn to
Section 2.5. If the voltage settings
require a change, see below.
The IQplus 310A can be powered by
115 or 230 VAC. The positions of
jumpers JP1, JP2 and JP3 on the
power supply board determine the
voltage setting.
If changes are necessary:
1. Position the jumpers on the power supply board
as in Figure 5 to match the local line voltage.
2. If necessary, change the dual fuses located on the
power supply board. Replacement fuses are speci-
fied in Section 7.1, and are also listed on the label
mounted on the main circuit board.
3. Change the line voltage and current rating on the
rear panel label to reflect the new settings.
6
Communications Cable
Power Receptacle
Main Circuit Board
FIGURE 3 – TOP VIEW WITH CASE REMOVED
F1 F2
JP1 JP2
Load Cell Cable
Power
Supply
Board
J1
C1
TRANSFORMER
J2 JP3
FIGURE 4 – POWER SUPPLY BOARD
JP1
115 VAC
230 VAC
FIGURE 5 – AC VOLTAGE JUMPERS
Load Cell
Terminal
Block (J3)
(TO J1 ON MAIN BOARD)
J4
C11 C8
JP2 J2 JP3