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VXI Technology, Inc.
26 CT-400 Installation
CONNECTING THE MAINFRAME TO EARTH GROUND
The CT-400 is configured at the factory for 115 V ac, 60 Hz. The supplied power cord grounding
conductor provides adequate grounding for this voltage and frequency level. However, if the
CT-400 is to run at anything higher than 63 Hz, the mainframe MUST be connected to earth
ground at the mainframe as follows:
1) Connect a 16 AWG (or larger) wire to the ground terminal located on the rear panel (this
connection is marked by a symbol). Use a grounding lug with a star washer or a toothed lug,
to make this connection. See
Figure 2-1.
2) Attach the other end of the wire to a permanent earth ground also using a star washer or a
toothed lug.
To avoid electrical shock, the mainframe ground terminal MUST be connected to earth
ground for frequencies higher than 63 Hz.
J211
J210
PWS
PWS
PWS
PWS
FAN
FAN SPEED
HIGH
VAR
LOW
AMB
TEMP
PWR
VOLT
CUR
SPEE D
TEMP
!
WARNING - DO NOT RE MOVE THIS POW ER MODUL E
WHILE T HIS INSTRUME NT HAS AC POWE R APPLIED
!
WARNING -
THE GROUN DING CONNECTION IN THE
POWER CO RD MUST BE CONNECTE D TO ENSURE
PROTECTION FROM ELECTRICAL SHOCK.
!
WARNING - TO AVOID ELECTRICAL SHOCK, DISCONNECT
AC POWER CORD PRIOR TO REPLACING FUSE.
CAUTION -
FOR CONTINUE D FIRE PROTECTI ON
REPLACE ONLY WITH A FUSE OF THE CORRECT
VOLTAGE AND RATING.
J200
100 - 240 VAC
15 A M AX.
47 - 63 Hz
REMOVE C OVER TO
SERVIC E AIR FI LTER
J201
MONITOR / CONTROL
F200
15A T 2 50
(VAC)
Chassis Ground Terminal Fuse
F
IGURE 2-1: FUSE AND GROUND LOCATION
AIR FLOW REQUIREMENTS
The CT-400 must be positioned to provide adequate airflow through the unit. Whether used as a
bench-top or rack mount unit, provide at least a one inch clearance, at the back and sides, to allow
for adequate airflow. Two air filters are installed in the mainframe at the factory, one for the
power supply fan (right side from rear view) and a larger one for the mainframe fans (in the rear at
the bottom). These filters may be removed if additional airflow is required, but only if the air is
filtered at another source within the rack or if it is installed in a clean environment.