OPERATION
710-14888-00C EMX4i User Manual
47
Timer mode
The starter can automatically stop the motor after a specified run time, then restart
it after a specified off (stopped) time. The starter will repeat the cycle while the start
signal remains active.
For timer mode to operate:
•
parameter 4A
Auto-Start/Stop Mode
must be set to 'Enable'
•
parameter 1A
Command Source
must be set to 'Timer'
•
the reset input must be closed
•
the first start must be commanded by a start signal
Timer mode operation is controlled by parameters 4B ~ 4C.
8.4
PowerThrough
PowerThrough allows the soft starter to control the motor even if the soft starter is
damaged on one phase. The EMX4i will use two-phase control techniques to soft
start and soft stop the motor.
NOTE
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 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.
While operating in PowerThrough, the trip LED will flash and the display
will indicate ‘2 Phase - Damaged SCR'.
PowerThrough operation does not support Adaptive Control soft starting or
soft stopping. In PowerThrough, the EMX4i will automatically select
constant current soft starting and timed voltage ramp soft stopping. If
PowerThrough is enabled, parameters 2C and 2D must be set
appropriately.
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.
