12 PSTX ENCLOSED SOFT STARTER
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01
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Your PSTX soft starter panel is equipped with
several panel door-mounted operator devices,
which may include the following:
• ND — one (1) through-the-door, lockable, input
device disconnect handle; one (1) operator
selector switch; two (2) pushbuttons; one
(1) door-mounted keypad and three (3)
indicator lights.
• XD — one (1) through-the-door, lockable, input
device disconnect handle; two (2) operator
selector switches; four (4) pushbuttons; one
(1) door-mounted keypad and four (4) indicator
lights.
Based on the selection, these components may
or may not be present in the panel. The operation
of these devices is explained in this section. Refer
to the soft starter terminal board I/O section of this
manual and wiring diagrams for specifics on wiring
connections.
Input disconnect
The purpose of the panel-mounted input
disconnects with through-the-door handle is to
provide a local, lockable method of removing all AC
input power from the normal or heavy duty panel
and PSTX soft starter.
Even when the disconnect or breaker handle is in
the “OFF” position, this does not guarantee that
dangerous voltage levels are absent at the line
side of the disconnect or breaker. Always make
sure to disconnect the upstream breaker or
disconnect to remove power to the panel before
working on it.
If your panel includes a circuit breaker, in addition
to providing a manual method of applying and
removing AC input power from the normal and
heavy duty panel, the circuit breaker also provides
short circuit protection for the panel components
and the motor.
Improper setting of the circuit breaker trip level
can result in code violations or inadequate short
circuit protection, possibly resulting in a fire or
safety hazard. Refer to the “Adjustments”
section of this manual for further instructions
on setting the circuit breaker trip level.
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01 Pilot device layout,
normal duty and
heavy duty (ND):
enclosure cover
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02 Pilot device layout,
extreme duty (XD):
enclosure cover
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