Instruction Manual
Appendix BX Rev. 1.2
January 1997
B-10 Appendices Rosemount Analytical Inc. A Division of Emerson Process Management
World Class 3000
b. Loosen setscrew (13) retaining HPS cover
(14). Remove cover.
c. Disconnect transformer wiring harness con-
nectors as described in the previous para-
graph from motherboard (25).
d. Remove slotted screw (16), lockwasher
(17), and flat washer (18) attaching terminal
strip covers (19) and (20). Remove terminal
strip covers.
e. Unplug ribbon cable from the receptacle on
the daughterboard (21). Take note of loca-
tion of black and white wires connected to
pin 8 and pin 9 of terminal strip J8. Discon-
nect these wires from J8.
f. Unscrew stand offs (22) on either side of
the daughterboard. Remove daughterboard
(21).
g. Unscrew four stand offs (22) that support
the daughterboard.
h. Making a note of the location and color of
each wire, disconnect wires from terminal
strip on HPS motherboard (25).
i. Remove hex nut (26), lockwasher (17), and
flat washer (18) securing the HPS mother-
board to the enclosure and transformer
mounting bracket (5).
j. Remove motherboard (25).
k. Position new motherboard on stand offs and
reinstall hex nut, lockwasher, and flat
washer removed in step i.
l. Reconnect wires to terminal strip in posi-
tions noted in step h. Cross check with wir-
ing diagram shown on Figure 2-4 of the
main text (IB-106-300NX Series).
m. Reinstall four stand offs removed in step g.
Position daughterboard (21) on stand offs
and reinstall stand offs removed in step f.
n. Plug ribbon cable back into receptacle on
daughterboard and reconnect black and
white wires. The black wire goes to pin 8
and the white to pin 9 of terminal block J8
on daughter board. Reinstall terminal cov-
ers.
o. Reconnect transformer wiring harness con-
nectors to motherboard. Note that in any
case, the transformer's connector is keyed
so that it can only be inserted one way.
p. Reinstall HPS cover (14) and secure with
setscrew (12).
B-11 DAUGHTERBOARD REPLACEMENT
Consult Safety Data Sheet 1M03243
before performing any work on the
CENELEC approved HPS 3000.
a. Follow the power down procedure outlined
in safety data sheet 1M03243 and the offi-
cial "Codes of Practice" for your country of
installation.
b. Loosen setscrew (13, Figure B-6) retaining
HPS cover (14). Remove cover.
c. Remove slotted screw (16), lockwasher
(17), and flat washer (18) securing terminal
strip covers (19) and (20). Remove terminal
strip covers.
d. Making a note of the location and color of
each wire, disconnect wires from the termi-
nal strip on the daughterboard (21).
e. Unplug ribbon cable from receptacle on
daughterboard. Take note of location of
black and white wires connected to pin 8
and pin 9 of terminal strip J8. Disconnect
these wires from J8.
f. Unscrew two stand offs (22) from daughter-
board. Remove daughterboard (21).
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