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26 | Options
Mode of operation Notes
1.
The Smart Start Assist has 2 indication LEDs on
board. The green LED indicates the status of the on-
board power supply while the red LED indicates an
alarm condition or the recovery time between starts.
2.
Once the main voltage is present, the green LED will
be fully ON. In case the main voltage is less than the
stated pickup voltage alarm value, the green LED
will be flashing. In case main voltage is higher than
the stated pick-up voltage and green LED is flashing,
then this may indicate that the on-board power
supply is faulty. (Power Supply Alarm)
3.
Upon closing L/L1, the Smart Start Assist will start
ramping, duration of which is < 1 second, provided
that the minimum time from stop to start is
respected. When opening L/L1, the Smart Start
Assist will stop without any ramp down.
4.
In the case of an under voltage, the Smart Start
Assist will shut down and the red LED flashes 2
times as long as the under voltage is present. Once
the main voltage is restored the red LED will
continue flashing for 5 minutes.Following these 5
minutes (6 minutes for HP versions), the Smart Start
Assist will start ramping function in the case L/L1 is
closed. The device can be reset at any time by
removing power on L2/N connection. When the
power is reapplied, the soft starter will star ramping
up as soon as L/L1 is closed, provided that the
minimum time from stop to start are respected.
5.
If an over current (>80A for 1 sec.) is sensed, the
Smart start Assist will shut down and the red LED
will flash 3 times indicating an over current
situation.This continues for 5 minutes. In the case
that the over current is still present at the second
attempt, user intervention is required to reset the
controller by cycling power for the device to operate
again as this implies that there are problems in the
system.
6.
A detection circuitry provides protection in case of a
faulty starting capacitor EMR. In such situation, the
red LED will flash 4 times for 5 minutes. Smart Start
Assist will check the status of the starting capacitor
EMR before attempting a ramping function (in the
case L/L1 is closed). If at the second attempt, the
starting capacitor EMR is found to be faulty, user
intervention is required to reset the controller by
cycling power for the device.
7.
In the case of incomplete ramping of the Smart Start
Assist, the red LED will flash 5 times. The flashing
will be indicated by the red LED for 5 minutes. If
after the second attempt, there is another
incomplete ramp alarm, user intervention is
required to reset the controller.
8.
During the recovery from under-voltage, over-
current and incomplete ramp alarms, the red LED
will flash twice the normal flashing frequency using
the same number of flashes. The figure #58 shows
the flashing in case of a recovery from an under-
voltage alarm.
8733942411 (2017/07)
9.
During the recovery time between starts, the Smart
Start Assist will be continuously ON until the
necessary recovery time elapses.
10. If Power supply on Smart Start Assist is removed
before the recovery period has elapsed, when
supply is restored, the delay will continue until the
remaining recovery time from the last start/stop
(before supply removal) is over. Following this,
another start may be attempted. If supply is
removed during alarm recovery (red LED flashing),
when supply is restored, the alarm will be reset and
the Smart Start Assist will only wait for the
respective delays between starts and/or stop to
start to elapse before attempting another start
(assuming L/L1 is closed).
Subject to change without prior notice
SM Series Heat Pump
SM Series Heat Pump
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