2
/10.2015/
electric
A1 A2 N1 N2 97 98 13 14
2 T1 4 T2 6 T3
1 L1 3 L2 5 L3
1 2 3 4 5 6 7 8
9 10 11 12 13 14 15 16
I
O
11 12
11 12
11 12
11 12
13
13
I
O
I
O
3
3
I
O
I
s
I
e
t
1
U
e
U
s
t
1
EN
Adjusting the softstart controller
The softstart controller can be set as a current limitation or as softstart device. The factory setting is current limitation.
In this function the softstart controller allows the current to exceed the nominal operating current for an adjustable
time after the compressor start. In the softstart function the initial torque (by means of the voltage) at the compressor
start is reduced to an adjustable value and will be increased to the nominal voltage within an adjustable time.
Dip Switches 1-16
Reset/Test-Button
Adjusting the nominal
operating current
Run/Alarm LED
The nominal operating current (FLA) can be adjusted
by the potentiometer as shown on the left.
The adjusted current is a reference not only for the
above mentioned current limitation but also for relea-
sing the overload protection.
If the current achieves 120% of the adjusted value
the overload protection is activated and the voltage
supply will be cut.
With selectable overload-trip-curves, which in case of
exceeding the nominal operating current also takes
into account the time of the exceeding, the trip be-
haviour can be chosen. The higher the trip class, the
slower the tripping takes place.
The trip class can be adjusted by the dip switches 11
and 12. Trip class 15 is factory set.
With dip switch 13 you can set, whether the alarm
shall be reset manually by the reset button or auto-
matically (when motor thermal model drops below
75% of motor thermal capacity). The manual reset is
the factory setting.
With dip switch 3 you can set the principal function
(Current limitation or soft start).
Off
Class Class Class
10
15
20
Dip Switch 11, 12:
Dip Switch 13:
Reset:
manually
Reset:
automatically
Dip Switch 3:
Current limitation
(Factory setting)
Soft start
I
e
: Nom. operating current (Potentiometer)
I
s
: Maximum current
(Dip switch 4, 5)
t
1
: Start time
(Dip switch 1, 2, 8)
U
e
: Nominal voltage
U
s
: Initial voltage (Dip switch 4, 5)
