D. Control Panel
The contains input plugs for the AMX192 signal, the thumbwheel switch
for pack number selection, a slider controller for testing the dimmers, a
'NORMAL/TEST' switch to activate the slider control, and 'POWER' and
'OVERTEMP' indicators.
4.3 Control Module (Discreet Analog Input)
A discreet analog input version of the pack is available. This pack contains an
analog to multiplex converter in addition to the other control circuitry.
This converter plugs into the Motherboard, and requires a different removable
control panel from the 'Multiplex Only' version. The 'Multiplex/Analog• version of
the control panel allows selection of AMX192 or analog signals from a front
panel switch.
4.4 Power Control and Cooling Assemblies
The following circuit and thermal elements in the bottom housing serve to con-
trol and dissipate power in the CD80 1.2Kw Pack:
A. 12 SSAs (1 for each 2 dimmers), rated appropriately for the dimmer
power rating, and mounted on a common
18' long heat sink anchored
to the bottom housing. Each dual SSA is field replaceable.
B. One torroidal choke for each dimmer is mounted in a common assembly
adjacent to the heat sink.
C. One primary, fully magnetic circuit breaker for each dimmer is mounted
in front of the torroidal chokes.
D. A fan mounted on the positive pressure side of the heat sink provides
approximately 70 CFM (derated) of cooling air through the enclosure.
E. A phase changing/terminal block assembly on the bottom housing
provides termination of either 3 phase 4-wire plus ground 120/208 VAC
80 AMPS, or single phase 3-wire plug ground 120/240
VAC 120 AMPS.
13
To Next Page
Loading...
