NORD Drivesystems BU0135 - Manual (Page 46)

SK 105E…175E Motor Starter Manual
46 Pre-series version BU 0135 GB-2713
4.2.2.1 Potentiometer
All potentiometers are non-latching and each
has 10 scale lines.
For starters and reversing starters without soft
start function, two potentiometers are
provided. The nominal current of the motor
can be set with the first potentiometer. With
reversing starters (SK 125E, SK 135E,
SK 165E and SK 175E) the second
potentiometer is used to set the locking time
for a change of direction of rotation.
P1 setting Assigned motor size 1 [Size 2] P2 setting Locking time
6
(deceleration time for soft starters
without reversing function)
1 [0%] 1.0 [3.1]
≡ 0.25 [1.10] kW - motor
1 [0%] No locking time
2 [11%] 1.3 [4.0]
≡ 0.37 [1.50] kW - motor
2 [11%] 0.1s
3 [22%] 1.7 [5.5]
≡ 0.55 [2.20] kW - motor
3 [22%] 0.2s
4 [33%] 2.3 [7.5]
≡ 0.75 [3.00] kW - motor
4 [33%] 0.4s
5 [44%] 3.1 [9.5]
≡ 1.10 [4.00] kW - motor
5 [44%] 0.8s
6 [55%] 4.0 [12.5]
≡ 1.50 [5.50] kW - motor
6 [55%] 1.6s
7 [66%] 5.5 [16.0]
≡ 2.20 [7.50] kW - motor
7 [66%] 3.2s
8 [77%] 7.5 [19.0]
≡ 3.00 [9.20] kW - motor
8 [77%] 6.4s
9 [88%] 9.5 [23.0]
≡ 4.00 [11.0] kW - motor
9 [88%] 12.8s
10 [99%] I
2
t monitoring disabled 10 [99%] 25.6s
The potentiometers are given non-linear characteristic curves by means of the software. Devices with soft
start function (SK 115E, SK 135E, SK 155E and SK 175E) also have potentiometers P3 and P4. These two
potentiometers are not accessible from the outside and therefore can only be adjusted with the housing
cover open.
P3 setting Starting torque (voltage) P4 setting Acceleration and deceleration time
6
1 [0%] 10% 1 [0%] Soft start disabled
2 [11%] 15% 2 [11%] 0.1s
3 [22%] 20% 3 [22%] 0.2s
4 [33%] 25% 4 [33%] 0.4s
5 [44%] 30% 5 [44%] 0.8s
6 [55%] 40% 6 [55%] 1.6s
7 [66%] 50% 7 [66%] 3.2s
8 [77%] 60% 8 [77%] 6.4s
9 [88%] 80% 9 [88%] 12.8s
10 [99%] 100% 10 [99%] 25.6s
6 For soft starters (not reversing soft starters) the deceleration time is set with P2 and the acceleration time is set with
P4. Otherwise, P4 is used to set the acceleration and deceleration times (SK 115 / SK 155).
P1
P2
P3
P4