7 motor current setting – Xylem SSW-07 Soft-Starter User Manual

Page 33

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CHAPTER 4 - SETTING THE SSW-07

32

English

4.7 MOTOR

CURRENT

SETTING

Deceleration Ramp

Time Setting Trimpot

Figure 4.6 - Deceleration ramp time setting

This setting defines the ratio of the SSW-07 current and the motor

current. The value of the setting is very important since it defines

the protection of the motor driven by the SSW-07. The setting of

this function interferes directly in the following motor protections:

-Overload;

-Overcurrent;

-Stall;

-Phase loss.

Calculation Example:

SSW-07 Used: 30 A

Motor Used: 25 A

Trimpot for the Motor Current Setting

Motor Current Setting = I

motor

I

SSW-07

Motor Current Setting = 25 A

30 A

Motor Current Setting

= 0.833

Therefore it must be set at 83 %

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