Eaton DS7 Series, Manual

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4 Operation
4.4 Potentiometer settings
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DS7 Soft starter 09/16 MN03901001Z-EN www.eaton.com
4.4 Potentiometer settings
The soft starters can be adjusted as necessary for the application at hand by
using the three potentiometers, which are labeled
U-Start , t-Start , and
t-Stop respectively. Aside from these potentiometer settings, no additional
settings or prompts are required in order to run the soft starters.
When using DS7-SWD soft starters, these potentiometer settings can be
adjusted by means of parameters.
Figure 70: Potentiometer layout
Table 17: Potentiometer settings in the default settings
4.4.1 How the potentiometers work
Figure 71: Time-based control of motor voltage with a soft starter
￫
￫ section 8.9, “Programming” explains how to configure the
DS7-SWD soft starter’s parameters.
Potentiometer Value Function DS PNU
Index DS
U-Start 30 - 100 % Start voltage at which the ramp
function is started 30 % 11 4915
t-Start 1 - 30 s Time in which the voltage is increased
from the value U-Start to 100 % with a
linear time ramp 5 s 111 50
t-Stop 0 - 30 s Time in which the voltage is reduced
from 100 % to the value U-Start with a
linear time ramp 0 s 114 0
30
1
30
0
t-Start (s)
U-Start (%)
t-Stop (s)
20 10
20 10
100
30
U-Start
U
t-Start t-Stop
t