Telemecanique Altivar 56 manual - Northern Industrial

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Bulletin No. 50006-519-01BChapter 5 — ConfigurationDecember 1996 7 → General Configuration MenuTable 29: Logic Input States for 3 Preset SpeedsInput a Input bLow Speed or Reference 0 0Preset Speed 1 1 0Preset Speed 2 0 1Preset Speed 3 1 1Seven preset speeds can be obtained with the I/O Extension Module. For moreinformation refer to the catalog (document number VD0C06S201_).Speed ReferenceSPEED REFERENCESPEED REF. 1.: AI1SPEED REF. 2 : AI2CLAMP SUM : YES†, & ENT to modifyENTESCAI2 SIGNAL TYPE0-20 mA4-20 mA20-4 mAX-20 mA,X= mAMULTIPLY BY (-1): NOENTNOYESSpeed Reference allows the assignment of the AI1 and AI2 inputs as SpeedReference 1 or Speed Reference 2. Speed Reference also allows you to modify theanalog current input, AI2, for type of signal. The adjustment range is 0-20 mA,4-20 mA, 20-4 mA, or x-20 mA where x can be programmed from 0 to 20 mA inincrements of 0.1 mA. Factory setting for AI2 is 4-20 mA. When Speed Reference isset to x-20 mA, the frequency at which the drive controller will run is determinedas follows:f = ( High Speed – Low Speed) ( Input mA § 20 mA) + Low SpeedWhen the value of AI2 is below x mA, the drive will run at the Low Speed setting.HSPfLSPXmA20mAFigure 48: Speed Reference and Drive Controller FrequencyIf the switch on the control board is set to voltage, AI2 will be a 0-5 V voltage input.Refer to Chapter 2 for location of switch. AI2 in this case must be set on the keypaddisplay for 0-20 mA. The voltage reference input, AI1, cannot be modified. It isfixed as a 0 to 10 VDC input.The two inputs, AI1 and AI2, are summed as a factory default, limited to HighSpeed. However, when Auto/Manual is active the inputs function independentlyand only one is active at a time. It is possible to multiply AI2 by (-1) by selectingYes. In this case, AI2 is subtracted from AI1. If Clamp Sum is set to Yes (factorysetting) and (AI1-AI2) is zero or negative, the drive controller will run at LowSpeed. If Clamp Sum is set to No and (AI1-AI2) is negative, the drive controller willchange direction. See Notes on page 80.© 1996 Square D All Rights Reserved79ηττπ://νιχοντρολσ.χοm
Chapter 5 — ConfigurationBulletin No. 50006-519-01B7 →General Configuration Menu December 1996NOTE: The drive controller cannot be commanded to change the direction of the motoronce the Keypad Command mode is entered. If the direction of motor rotation is reversedwith speed reference summing, the motor will continue to rotate in this direction if KeypadCommand mode is entered. Make sure that the motor is rotating in the desired directionbefore switching from Terminal Command mode to Keypad Command mode.NOTE: If 20-4 mA is selected, user should consider effects of broken wire. If broken wireoccurs when 20-4 mA is selected, drive controller will run at high speed.Auto/ManualAUTO./MANUALNOYES,LOGIC IN.:---AUTO RUN IN. :---†, & ENT to modifyESC to quitAuto/Manual allows switching between Speed Reference 1 and Speed Reference2 by using a logic input. Speed Reference 1 and Speed Reference 2 can beprogrammed to AI1 or AI2 in the Speed Reference screen (see page 79). The Auto/Manual function eliminates the need for mechanical switching of the low levelanalog inputs, and allows the Speed References to act independently instead ofbeing summed.Manual command is defined as Speed Reference 1; Automatic command as SpeedReference 2. When assigned input is high, Auto is active. When it is low, Manual isactive.Auto Run Input is optional. If assigned, it allows the use of a second logic input foran additional 2-wire remote control run command, only active when the drivecontroller is in Auto mode. Local control can be used as either 2-wire or 3-wirecontrol. See Figure 97 on page 163 and Figure 98 on page 164 for interaction ofAuto/Manual and Controlled Stop in 2-wire and 3-wire control.Controlled StopCONTROLLED STOPNOBY LOGIC INPUTBY FREQ. LEVELBY LI / FREQ.LEV.†, & ENT to modifyControlled Stop, which customizes the stopping process, is commanded by:• Logic Input• Frequency Threshold• Frequency Threshold and Logic InputWhen Controlled Stop is activated, the drive controller stops according to one ofthe following methods: Freewheel Stop, Fast Stop, or DC Injection Braking. Toenable Controlled Stop, select a command and stop method as explained on thefollowing pages. Command methods are explained on pages 81 to 85; stopmethods, on pages 82-85. See Figure 97 and Figure 98 in Appendix A for interactionof Auto/Manual and Controlled Stop in 2-wire and 3-wire control.80 © 1996 Square D All Rights Reservedηττπ://νιχοντρολσ.χοm
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Telemecanique Altivar 56 manual - Northern Industrial

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