VYPER
™
VARIABLE SPEED DRIVE
INSTALLATION
100-210 IOM (
JUL
09)
Page 27
ExTERNAL POWER AND CONTROL WIRING
Shock Hazard! Before beginning
service, use proper lock-out/tag-out
procedures to disconnect all power
supplies related to this equipment. Verify all power is
removed from the supply leads. Death or severe personal
injury will occur if proper care is not taken.
Shock Hazard! Wait five (5) minutes
after switching power to the Vyper
™
OFF to allow capacitors in the
cabinet to discharge before opening the cabinet door.
Failure to do so will result in death or serious injury.
NOTE: Perform all Vyper
™
wiring in accordance with local
and national electrical codes, applicable industrial safety
regulations, and guidelines described in this manual.
External power and control signals must be fed in and out of
the Vyper
™
variable speed drive. The unit requires the wiring
to be properly installed in order to supply power to the unit
for processing. The Vyper
™
also outputs processed power
to the motor of a compressor package. The two connection
points are at the following locations:
INPUT POWER CONNECTION
For remote-mounted units, the input power junction is located
on the upper left side of the cabinet (See Figure 15). This
location provides a junction for three power cables, L1, L2,
and L3.
Figure 15 - Vyper
™
Input Power Terminal Connection Lugs
Strip 0.5 to 1.0 inch (13 to 25 mm) of insulation from the ends
of the input power leads (See Figure 16). This allows insertion
of the copper into the junction area.
Figure 16 - Insulation Stripped from Power Leads
Insert the external power leads into the top of the circuit
breaker and then fasten using a hex-style wrench (See Figure
17). Torque to 20 ft-lb (27.2 Nm)
Figure 17 - Fastening Power Leads
Fasten the grounding connection, adjacent to the external
power connections located on the top of the left wall of the
cabinet (See Figure 18).
Figure 18 - Ground Connection
