Emerson Rosemount Analytical RDO, Manual

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Terminal Description NA Color Euro Color
L Live Black Brown
N Neutral White Blue
Protective Earth Green Green & Yellow
10
MODEL RDO WIRING
FIGURE 2-1. AC circuit board
and terminal connections
The AC power board is located under the metal shield on
the right side of the enclosure. The terminal strip on the
board accommodates the AC power connections as well
as two high voltage relay connections. See Figure 2-1.
1. Remove the front cover of the enclosure.
2. Remove the metal AC power board cover.
3. Thread the power cable and relay wires (if needed)
through the dome fittings nearest the power board.
4. Using the green screw, connect the green earth wire
of the power cable to the metal frame in the bottom
of the enclosure. See Figure 2-2. A green wire con-
necting the metal frame to the terminal strip should
already be in place.
Terminal Description
COM Common
NC1 or NC2 Normally closed
NO1 or NO2 Normally open
FIGURE 2-2. Connect the ground wire to the
metal frame using the green screw.
5. Connect the live and neutral power wires to the L and
N terminals. See Figure 2-1.
6. Connect relay wires (if required) to the terminal
strip. See Figure 2-1.
7. Replace the metal AC power board cover.
8. Replace the front cover of the enclosure. Be sure
the desiccant pack (PN R0087630) is present.