Toshiba TE Series Instruction Manual page 59

Basic Installation and Operation Guide
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TE Series Digital Solid State Soft Starters 18 – 1250A
Shunt Trip:
Shunt Trip is a feature that will cause an immediate Trip if the TE Series
detects current flowing through any phase (or all) while the TE is in the
Off state. The trip function is typically associated with the Aux. Relay
setting 7 (see F060-63), wired to a Shunt Trip coil in an upstream circuit
breaker or an in-line contactor. This function is to interrupt power flow to
the motor windings in order to prevent damage. The usual cause is
multiple shorted SCRs or a welded Bypass Contactor. The only time this
function should be turned off is for troubleshooting by qualified service
personnel.

Shunt Trip
Decimal Value = 16 (b 00010000)
This feature is On (default setting).To turn it Off, Subtract 16 from
F051. To turn it On, add 16 to F051.
PTC Trip:
This feature controls the inclusion of the PTC Input (see Section 4.2.7).
When it is ON (default setting), a jumper wire or other circuit must be
installed on the PTC input if a PTC resistor is not included in the motor.
Turn this feature to OFF for troubleshooting or if a jumper wire is not
used.

PTC Trip
Decimal Value = 32 (b 00100000)
This feature is On (default setting). To turn it Off, Subtract 32 from
F051.To turn it On, add 32 to F051.
Line Phase Loss (Stopped) Trip:
This feature will prevent the TE Series starter from attempting to start if
the voltage in one (or more) of the incoming phases is not present. This
can be used to detect a blown fuse or power supply loss provided control
power is still available. It differs from the Phase Loss (Running) Trip in
that it is based upon line voltage and does not require that a Start
Command be given. This trip function resets itself after determining that
all 3 phases have voltage applied. The voltage level at which this feature
activates is fixed at approximately 100VAC.It is not adjustable and
should not be used as Under Voltage protection.

Line Phase Loss (Stopped) Trip
Decimal Value = 64 (b 01000000)
This feature is On (default setting).To turn it Off, Subtract 64 from
F051.To turn it On, add 64 to F051.

Notes:
1) When using an In-Line Isolation Contactor, it may be necessary to
turn Off this protection (by subtracting a numeric value of 64 from
F051) in order to avoid nuisance tripping whenever the In-Line
Contactor opens.
2) This protection will automatically reset itself when line voltage is
present on all 3 phases. When using 3-wire control, the TE Series
will not attempt to restart unless the Start Command is re-initiated.

Caution:
When using 2-wire control, the starter will restart when this
feature resets itself after all 3 phases are present.