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P44 Independent Starting/Running Overload PFN 13

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Range Off – On (Default Off)

Description If “Off”

When this parameter is “Off” the overload defined by the Motor Running Overload Class (P3 / QST 03/PFN

15) parameter is active in all states.

If “On”

When this parameter is “On”, the starting and running overloads are separate with each having their own

settings. The starting overload class (P45 / PFN 14) is used during motor acceleration and acceleration kick.

The running overload class is used during all other modes of operation.

If both the running overload and the starting overload classes are set to "Off", then the existing accumulated

motor OL% is erased and no motor overload is calculated in any state.

If the starting overload class is set to "Off" and the running overload class is set to "On", then the I

t motor

overload does NOT accumulate during acceleration kick and acceleration ramping states. However, the

existing accumulated OL% remains during starting and the hot/cold motor compensation is still active. The

OL% is capped at 99% during starting.

Although there is really no reason to do so, the starting overload class could be set to "On" and the running

overload class set to "Off".

See Also Motor Running Overload Class (P3 / QST 03) parameter on page 76.

Motor Starting Overload Class (P45 / PFN 14) parameter on page 107.

Motor Overload Hot/Cold Ratio (P46 / PFN 16) parameter on page 108.

Motor Overload Cooling Time (P47 / PFN 17) parameter on page 109.

Theory of Operation section 7.1.7, Separate Starting and Running Motor Overload Settings on page 136.

106

6 - PARAMETER DESCRIPTION

PFN: Indep S/R OL

13 Off

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