Emerson Daniel Danalyzer 1000, Hardware Reference Manual

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MODEL 1000
SEP 2005
2350 to 2350A CPU RETROFIT INSTRUCTIONS
F-11
F.4 2350A OPTIONS
The following board configurations are optional for the Model 500 with 2350A Controller.
G.4.1 The COM4A Board
(1) To add four additional communications ports at the GC Controller site, remove the
Controller enclosure's front panel.
SERIOUS PERSONAL INJURY OR DEATH POSSIBLE
Before removing the unit cover from the GC Controller, make certain the power supply
switch is OFF and the AC power cord is disconnected. Observe all safety precautions
when you are working in a hazardous environment.
Failure to observe all safety precautions could result in serious injury or death.
(a) For the purged Controller , the front panel is secured by 16 screws. Remove those
screws first.
(b) Then carefully lower the front panel on its bottom hinges. The front panel is heavy,
so make sure it does not drop and cause damage.
(c) For the rack mount Controller , the rear of the enclosure is open; it allows access for
most field wiring procedures without removing the enclosure.
(2) Locate the GC Controller's Terminal Board for Field Wiring (TB). The TB is attached to the
GC Controller's Card Cage Assembly, facing the enclosure's front panel. (In the rack mount
Controller, the TB faces outward toward the rear of the enclosure.)
(3) Loosen the six screws that secure the TB. Then unplug the TB from its connections at the
back, top of the board.
(4) Lower the TB down and out of the way, held in place by its ground straps at the bottom of
the board. This exposes the Card Cage Assembly.