NORD Drivesystems BU0100 - Manual (Page 13)

NORDAC SK 150E
BU 0100 GB Technical Modifications Reserved 13
3.4.2 Setting the potentiometers and dip switches
With the electronic soft starter Sk 150E, the
start-up and run-down behavior of the drive
can be adapted to the respective application.
The settings are made using 4 dip switches
and 4 potentiometers.
The dip switches 1 and 2 are used to set 4
different operating modes. The dip switches 3
and 4 determine the time base for two
potentiometers.
The potentiometers are used to set times
and torques for drive characteristics.
Depending on the operating mode set,
potentiometers P1 and P3 are for the
associated torques and potentiometers P2
and P4 for the corresponding times.
Operating modes
4 different operating modes, i.e., characteristics during start-up and run-down, can be selected with the
electronic soft starter SK 150E. If a drive with SK 150E shall be started, then the operating mode must first be
determined, followed by the setting of the associated torques and times. The principle of the phase control
must always be observed, by which the variable torque is merely determined by the voltage applied to the
motor. This does not allow ramp times and torques to be realized with the same quality as with a frequency
inverter.
The 4 operating modes are described and explained below. The pertaining dip switch positions and adjustment
ranges can be taken from the subsequent chapters. All information supplied on brake properties presuppose a
brake motor as well as the SK 150E with integrated or separate rectifier.
Operating mode "00"
With this operating mode, the
torque (voltage on motor, P1)
and the time (P2) can be set for
start-up and run-down.
When applying the release
[RUN-R], the drive starts up
with the torque (voltage at
motor) set at P1. The maximum
torque (full voltage at motor) is
reached after the time set at
P2.
When removing the release
signal [RUN-R], the torque
(voltage at motor) is lowered
immediately to the value set at P3. The torque is then reduced continuously in the time set at P4 until standstill.
The brake applies after the run-down of the time set with P4.
P 1
P 2
P 3
P 4
Dip switch
1 2 3 4
Potentiometer
P1 P2 P3 P4
System
voltage
Time
RUN-R
Brake