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Digistart D3: User Guide
Issue: G
15D – Shorted SCR Action
Options:
3-Phase Control Only (default)
PowerThrough
Description:
Selects whether the soft starter will allow PowerThrough operation, if the soft starter is damaged on
one phase. The soft starter will use two-phase control, allowing the motor to continue operating in
critical applications.
PowerThrough is only available with in-line installations. If the starter is installed inside delta,
PowerThrough will not operate.
PowerThrough remains active until '3-Phase Control Only' is reselected.
A shorted SCR or a short within the bypass contactor will trip the starter on ‘Lx-Tx shorted’. If PowerThrough is
enabled, the trip can be reset and subsequent starts will use PowerThrough two-phase control; however not all
features will be available. The trip LED will flash and the display will indicate ‘2 Phase - Damaged SCR'.
CAUTION
PowerThrough uses a two-phase soft start technology and additional care is required when sizing circuit
breakers and protection. Contact your local supplier for assistance.
CAUTION
The starter will trip on Lx-Tx Shorted on the first start attempt after control power is applied. PowerThrough
will not operate if control power is cycled between starts.
PowerThrough operation does not support Adaptive Control soft starting or soft stopping. In
PowerThrough, the Digistart D3 will automatically select constant current soft starting and timed voltage
ramp soft stopping. If PowerThrough is enabled, Pr 2C and 2B must be set appropriately.
15E – Jog Torque
The Digistart D3 can jog the motor at a reduced speed, which allows precise positioning of belts and flywheels. Jog
can be used for either forward or reverse operation.
Range:
20% - 100%
Default:
50%
Description:
Sets the current limit for jog operation.
Содержание D3-0023-B
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