7INSTALLATION INSTRUCTIONS
Grounding
All panels/enclosures must be grounded.
Each panel contains a grounding lug with
provisions for connecting a field-grounding
conductor.
All field wiring shall be copper and have a minimum
insulation rating of 75 °C (167 °F).
Size grounding conductors according to local
and national codes.
Grounding methods must comply with local
and national codes.
Power wire (greater than 120 V AC)
All field wiring shall be copper and have a minimum
insulation rating of 75 °C (167 °F).
Size all wire based on panel nameplate current
ratings in accordance with local and national codes.
All power wiring must be routed away from other
control wiring. Avoid running power wiring parallel
to other wiring without a minimum separation
distance of four (4) inches. Power wiring should
only cross perpendicular to other wiring.
Input and output power must be connected
as per the wiring diagram.
Do not connect power supply voltage greater
than panel rated voltage, or damage will occur
to equipment.
Refer to electrical schematic and labels (inside
cover) for torque values for customer input and
output power connections.
Never connect or disconnect input wiring
with voltage applied. A serious or fatal injury
may result.
Never connect or disconnect output wiring
with voltage applied. A serious or fatal injury
may result.
Control wiring (120 V AC)
All field wiring shall have a minimum insulation
rating of 75 °C (167 °F).
Size wire according to local and national codes.
The enclosed soft starter panel comes with 120 V
AC control supply, which is supplied by the CPT
from the factory. The PSTX also has a built-in 24 V
DC power supply.
All control wiring must be routed away from power
wiring. If control wiring is routed parallel to signal
wiring (24 V DC or less), isolation of the signal
wiring must be maintained. A minimum of four (4)
inches is required to adequately separate signal
and control wiring. If signal wire is UL recognized
shielded cable, separation can be minimized to a
one (1) inch separation.
Signal wiring (24 V DC or less)
All field wiring shall have a minimum insulation
rating of 75 °C (167 °F).
Size wire according to local and national codes.
All field signal wiring must be twisted and shielded.
All shields must be grounded at one point ONLY.
It is recommended to terminate the shield drains at
the signal’s source. Avoid routing signal wiring with
power wiring. If signal wiring is routed with control
wiring, a minimum separation of one (1) inch is
required.
If your application requires wiring to the PSTX soft
starter control terminals, use 16 to 18 AWG wire.
Refer to the PSTX manual for more details.
Connections to the soft starter terminals should be
tight enough so that a slight tug on the wire will not
result in the wire coming partially or completely out
of the terminal board.
Do not over-tighten terminals and connectors.
Damage to the equipment may occur.
02
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