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1SFC132081M0201 | Installation and commissioning manual |

Functions

7.12 Sequence

start

The Softstarter can start up to 3 different motors

sequentially, sequence 1, 2 and 3. This is suitable when

setting up the Softstarter with different applications.

Select the parameter set through input signal to the

Softstarter.

Parameter settings and physical connections for

programmable inputs must agree.

WARNING

EOL does not work during Sequence start.

Recommended to add separate overload

protections for each motor.

For connections, see

chapter

5.1.2.5 Programmable

inputs (Sequence start)

)

Parameters set for sequence start 1, 2 and 3 are equal.

If the Softstarter trips, and the trip must stop the motor,

all motors stop.

Sequence start has these parameters:

Parameter

Description

Setting range

Default value

08.01 Sequence mode

Enable sequence start of motors.

Off, Start multiple
motors

Off

08.02 Ie seq 1
08.30 seq 2
08.60 seq 3

Sets the nominal current for the motor.
For good performance, it is important that
the nominal current is set to the correct
value. For Inside Delta connection, set this
parameter to 58% of the nominal motor
current.

Individual
(different for each
type)

9.0 A...1250 A,
divided into 19
overlapping ranges

08.03 Start mode seq 1
08.31 seq 2
08.61 seq 3

Sets the desired start mode.

Voltage start ramp,

Torque start ramp,
Full voltage ramp

Voltage start ramp

08.04 Start ramp time seq 1
08.32 seq 2
08.62 seq 3

Sets the time it takes for the voltage to come
at 100%.

1 ... 120 s

10 s

08.05 Start ramp init lev seq 1
08.33 seq 2
08.63 seq 3

Sets the level from where the start ramp
initiates (voltage level for Voltage start and
torque level for Torque start).

10 ... 99%

30%

08.06 Curr lim lev seq 1
08.34 seq 2
08.64 seq 3

Sets the level to which the current is limited
during start.

0.5 ... 7.5 × Ie

7.0 × Ie

08.07 Kick start seq 1
08.35 seq 2
08.65 seq 3

Enables a voltage peak at the beginning of
the start ramp.

Information: The function Current Limit is not
in operation during Kick start.

Off, On

Off

08.08 kick start level seq 1
08.36 seq 2
08.66 seq 3

Sets the level of the Kick start in percentage
of rated voltage.

50 ... 100%

70%

08.09 Kick start lvl seq 1
08.37 seq 2
08.67 seq 3

Sets the duration of the Kick start in
seconds.

0.2 ... 2.0 s

0.2 s

08.06 Torque lim lvl seq 1
08.38 seq 2
08.68 seq 3

Sets the level to which the torque is limited
during the start with torque control.

20 ... 200%

150%

08.10 Torque tune seq 1
08.39 seq 2
08.69 seq 3

Adjustment of resistive losses.

0 ... 1000%

100%

08.11 Torque ctrl gain seq 1
08.40 seq 2
08.70 seq 3

Sets the speed of the voltage regulator
during torque start and stop. It seldom
needs to be changed, but if a dip occur in
the torque curve during stop, increasing this
value might solve it.

0.01 ... 10.0

0.24

Example: Start 1, (Start mode seq 1) is set to Run 1
relay , (K4,K5 or K6) the relay closes when the start
signal is given, which leads to a power transfer. This
can change between Softstarters and their specific
parameter settings.