Telemecanique Altivar 56 manual - Northern Industrial

Bulletin No. 50006-519-01BChapter 5 — ConfigurationDecember 1996 7 → General Configuration MenuSet Current Limit to Default Limit, or enter a reduced value and select one of theactivation methods:• Frequency Level: when the drive controller exceeds the programmedfrequency level the reduced Current Limit value is activated. To keep thereduced Current Limit value active at all times, set frequency level to 0.• Logic Input: assign a logic input to Current Limit (see Figure 44 on page 74 forprocedure). When the assigned logic input is low (state 0), the Current Limitvalue is the default setting. When it is high (state 1), the Current Limit is thereduced value.• Analog Input: assign an analog input to Current Limit (see Figure 43 on page73 for procedure). The set current limit is ignored and the analog input isscaled so that the adjustment range of current limit is 40% to 110% of the drivecontroller current. This function could be used as a drive current reference formotor torque control.Normal Current LimitReduced Current LimitThresholdMotor FrequencyLIx InputFrequency Thresholdor Logic Input activationAIx InputCurrent LimitFigure 42: Current Limit TimingReassigning Analog andLogic InputsENTESCTo reassign an analog input:CURRENT LIMIT‘AI?AI1 SPEED REFER. 1AI2 SPEED REFER. 2Clear AssignmentSelect INPUT & ENTENTESCREASSIGN ?AI2 SPEED REFERENCE 1’AI2 CURRENT LIMITENT to ConfirmESC to AbortENTESCAI2 SIGNAL TYPE0-20 mA4-20 mA20-4 mAx-20 mA x= 4mAFigure 43: Reassigning Analog Inputs© 1996 Square D All Rights Reserved73ηττπ://νιχοντρολσ.χοm