SkyTracker STX-1-2000, Инструкция по эксплуатации

Страница: 16 / 52

4.5.5 TIMER PBC ASSEMBLY
STX-1 units are supplied with a printed circuit board assembly that controls Auto Strike ac-
tion as described above, and a 30 minute cool down timer for units operated by remote or
unattended operation.
4.6 POWER FACTOR CORRECTION CAPACITORS
Xenon lamp power supplies have low power factor in conversion from AC to DC for lamp
operation. Strong Entertainment Lighting has incorporated capacitor banks, which improve
the efficiency factor, thus reducing power consumption and allowing operation at lower cur
-
rent levels. This in turn reduces input power requirements and the size and rating of input
power cables and circuit breakers.
The power factor correction capacitors are mounted in groups for each power supply. In
early model SkyTrackers, they are located on the STX base between the power supplies.
Each group is wired directly to its related power supply
4.7 DC POWER AND IGNITION CABLES
Three cables connect the DC power supply and the control system to each lamphouse. In
each group the two large, single-conductor cables supply DC current to the lamps, while the
center multiconductor cable supplies AC control voltage, igniter operation and fan power.
5.0 BASE ASSEMBLY, MECHANICAL COMPONENTS – STX-4 (5.1 to 5.5)
Components that are required to provide the unique motion of the SkyTracker STX-4 are
contained within the base assembly.
5.1 MOTION DRIVE TRAIN
The motion drive train provides mounting for the four lamphouses by the motion spindle
assemblies, which are timed together by one continuous timing belt. The Number 4 motion
spindle assembly (opposite the control panel; see Figure 7) is driven by the reduction gear
motor through a chain drive.
CAUTION
DO NOT attempt to rotate the SkyTracker head assemblies by hand unless the
chain has been disconnected, as damage may occur to the motion drive train.
5.2 MOTION ASSEMBLIES
The motion assemblies provide both for the oscillating motion of the SkyTracker and
mounting support for the lamphouses. Each assembly consists of a “bent shaft,” shaft seal,
drive/timing pulley and lower and upper bearing. Bearings in the housing assemblies are
permanently lubricated and do not require regular maintenance.
12