Leeson Micro Series Compact Inverters Manual de usuario descargar pdf (Pagina 40)

14.2.5 SPEED REFERENCE SIGNALS

 Thedriveallowsforthreeanalogspeedreferenceinputs:aspeedpotentiometer(10,000Ohm),0-10VDC,

or 4-20 mA.

SPEED POT Connect the wiper to terminal TB-5A, and connect the high and low end leads to

terminals TB-6 and TB-2, respectively.

0-10 VDC Wire the positive to terminal TB-5A and the negative to terminal TB-2. TB-5A input

impedanceis200kilohms.

4-20 mA Wire the positive to terminal TB-5B and the negative to terminal TB-2. TB-5B input

impedance is 100 ohms.

NOTE:Whenanexternalspeedreferencesignal(remotespeedpot,0-10VDCor4-20mAsignal)isused,

minimumandmaximumspeedreferencesaredeterminedbytheuserprogrammedordefaultsettingsin

parameters39(TB-5MIN)and40(TB-5MAX),notparameter10(MINFRQ)or11(MAXFRQ).

14.2.6 SPEED REFERENCE SELECTION

AUTO/MAN vs. LOCAL/REMOTE

In the MICRO Series drive, AUTO/MAN refers to speed control, and LOCAL/REMOTE refers to

START/STOP control. AUTOMATIC or MANUAL speed control selection is affected by whether the

drive is in LOCAL or REMOTE mode.

 InLOCALmode(keypadstart/stopcontrol),AUTOMATICandMANUALspeedcontrolisselectedusing

Parameter28-AUTO/MAN.WhensettoBOTH,theAUTO/MANbuttonthekeypadisactiveandis

usedtotogglebetweenMANUAL(keypadorspeedpot)andAUTOMATIC(0-10VDC,4-20 mA,or

preset speeds) speed control. When set to MANUAL, speed control is governed by Parameter 29 -

MANUAL,whichselectseither KEYPAD or 0-10VDC(speed pot). When set toAUTOMATIC,one

of the TB-13 input selects must be set to the desired speed reference, and that terminal must be closed to

TB-2. The drive will then respond to the automatic speed reference. If one of the TB-13 input selects is

set for a speed reference, and the contact closure is not made to TB-2, speed control will remain in AUTO

mode,but thedrive willrespond tothe keypadorspeedpot,dependingonParameter29-MANUAL.

Therefore, if the Form C relay or open-collector outputs are set to indicate AUTO/MAN mode, they will

still indicate AUTO mode.

 In REMOTE mode (terminal strip start/stop control), speed control is selected using the TB-13 input

selects. For AUTOMATIC speed control, one of the TB-13 input selects must be set to the desired speed

reference, and that terminal must be closed to TB-2. The drive will then respond to the automatic speed

reference. If none of the TB-13 input selects are closed to TB-2, speed control will default to MANUAL

mode,andthedrivewillrespondtothekeypadorspeedpot,dependingonParameter29-MANUAL.

This will cause the Form C relay or open-collector outputs to indicate MANUAL mode if set to indicate

AUTO/MAN mode.

0 - 10 VDC and 4 - 20 mA INPUT SIGNALS

TB-13A, TB-13B, and TB-13C can all be programmed for 0-10 VDC or 4-20 mA input.

PRESET SPEEDS

TB-13A can be set to SPEED #1, TB-13B to SPEED #2, and TB-13C to SPEED #3. Closing any two

of these terminals to TB-2 will select SPEED #4. Refer to Parameters 1-4: SPEED #1 - #4 in Section

18.0 - DESCRIPTION OF PARAMETERS.

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Leeson Micro Series Compact Inverters Manual de usuario Pagina 40