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Page 43

Additional Tuning Adjustments

Internal Resistance Compensation ( IR COMP )

Compensation pot is used to overcome the motor’s natural tendency to slow

dow as

t

the

e

mo

.

If t

e

mo

,

tur

n

the load increases. If the motor slows down excessively as it is loaded, adjus

IR COMP pot clockwise to recover speed lost during the loaded condition. Th
tor will oscillate in speed or “hunt” if the IR COMP pot is adjusted too far clockwise

his pulsing of speed occurs, adjust the IR COMP pot counter clockwise until th

tor speed stabilizes.

If JP4 is set in the TACH position indicated tachometer feedback is being used

the IR COMP pot fully counter clockwise otherwise instability will occur.

n

Note: If the drive is using the voltage or current signal follower, perform these

adj stmen

Ve

u

ts with the Auto/Manual switch in the Manual position.

locity Stability (VEL STAB)

The VEL STAB pot helps match the dynamic characteristics of the drive to th

e

dynamic characteristics of the DC motor and its load. The drive’s outer velocity loop
inc

s” that exist in

bot

ot adjusts the

tim cons

d

com

e

driv

y

pre

Cu

ludes an electrical “lead” circuit to compensate for the mechanical “lag

the DC motor and its driven mechanical system. The VEL STAB p

h

e

tant of this lead circuit.

Clockwise rotation causes the drive to respond more quickly to spee

mand/speed feedback changes but increases the overshoot experienced by th

e. Counterclockwise adjustment of this pot dampens the drive response. It is factor

set at the midway position.

rrent Stability (ISTAB)

characteristics of the drive to the dynamic

cha

The drive’s inner current loop includes an

ele rical

r

arm

e

cur

d

fro

is v
respond more quickly to current changes, but the factory shipped setting is usually
adequate for most applications.

Sp

The ISTAB pot matches the dynamic

acteristics of the DC motor armature.

r

ct

“lead” circuit to compensate for the electrical “lag” that exists in the DC moto

ature current. The ISTAB pot adjusts the time constant of this lead circuit.

In torque (current) control applications, the velocity loop is bypassed and th

rent loop is used. For speed (velocity) control applications, the current loop is fe

m the output of the velocity loop.

The current loop responds to current changes quickly. Therefore, the ISTAB pot

ry sensitive and harder to adjust properly. Clockwise rotation causes the drive to

e

eed Loop Offset (SPD OFFSET)

This pot is used to zero o

ut any offsets in the speed loop amplifier. With the

speed pot set to zero (as well as the Min Spd pot, if used), adjust the SPD OFFSET so
any “creep” in the motor speed is eliminated with zero speed command. It is factory
preset to its midway position.

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Содержание Control Techniques Focus 3N

Страница 1: ...Page i Focus 3N to 5HP Single Phase Uni Directional Non Regenerative DC Drive User Guide P N FOCUS3N UG Revision A2 Date November 22 2005 Control Techniques Drives Inc 2004 ...

Страница 2: ... of this User Guide are believed to be correct at the time of printing In the interests of a commitment to a policy of continuous development and improvement the manufacturer reserves the right to change the specifications of the product or its performance or the contents of the User Guide without notice All rights reserved No parts of this User Guide may be reproduced or transmitted in any form o...

Страница 3: ...exchange software files electronically Technical Support 716 774 1193 or 800 893 2321 Email pdtechsupport emersonct com Control Techniques products are backed by a team of professionals who will service your installation Our technical support center in Grand Island New York is ready to help you solve those occasional problems over the telephone Our technical support center is available 24 hours a ...

Страница 4: ...t in death or serious injury Caution indicates a potentially hazardous situation that if not avoided may result in minor or moderate injury Caution used without the safety alert symbol indicates a potentially hazardous situation that if not avoided may result in property damage Page iv ...

Страница 5: ...n an environment classified as pollution degree 2 in accordance with IEC664 1 This means that only dry non conducting contamination is acceptable Setup Commissioning and Maintenance It is essential that you give careful consideration to changes to drive settings Depending on the application a change could have an impact on safety You must take appropriate precautions against inadvertent changes or...

Страница 6: ...ed other than adjustments to the settings or parameters specified in the manual The drive contains capacitors which remain charged to a potentially lethal voltage after the supply has been removed Grounding Earthing equipotential bonding The drive must be grounded by a conductor sufficient to carry all possible fault current in the event of a fault The ground connections shown in the manual must b...

Страница 7: ...Page vii ...

Страница 8: ... 10 Specifications Ratings Table 11 Performance Specifications 12 Operating Conditions 12 Internal Adjustments Potentiometer 12 Customer Selections Jumpers 12 Operator Functions 13 Control Circuit Specifications 13 Options 13 Dimensions 14 15 Option Kits Descriptions 16 20 Customer Connections Start Up Start Up Guidelines 21 Incoming Power Requirements 22 Grounding 22 Motor Wiring 22 23 When viewi...

Страница 9: ...s Functional Block Diagram 47 Non Regen Circuit Overview 48 Start up Guide Worksheet 49 51 Initial Start Up Basic Test Setups 52 Installation of Option Kits 52 Motor Test 53 55 Trouble Shooting Guide 56 59 Light Bulb Test 60 61 Retrofitting Focus 3 to Focus 2 Applications 62 64 Application Notes 65 Tachometer Follower Application 66 67 Drive Isolation 68 72 Spare Parts 73 When viewing this documen...

Страница 10: ... commanded nor can it stop overhauling load situations For more demanding applications a sister drive the Focus 3 Regen regenerative model offers full four quadrant operation for bi directional motor control and controlled deceleration as well as opposition to overhauling loads Both drives incorporate many features that are standard on high performance system drives such as dynamic stability and b...

Страница 11: ...on on the nameplate you can determine compatibility by measuring your motors Field resistance using a calibrated ohmmeter Motors with 90v Armatures typically require 100 Vdc for field excitation In these cases the Focus 3 requires 120vac input power and must be internally set for this input level The motor Field resistance should not be less than 100 ohms when cold 180v Armatures typically require...

Страница 12: ... of a machine back in the 1970 s A simple 10 amp eddy current controller could actually control the speed torque of a 900 HP motor The F3N2C EC can provide coil current up to 10 amps dc in 5 ranges starting at 2 7amps by setting a programming jumper This current level can be fine tuned to the exact coil current of the clutch being controlled For more specific information refer to CTAN213 via the I...

Страница 13: ...or speed runaway One who designs systems with Speed Feedback devices such as DC tachometers should be cognizant of this fault condition and must take machine design precautions should this event occur We would recommend that all DC Drives be initially run using Armature Voltage Feedback to verify operation even if Tach Feedback is the ultimate goal Quick Stops A non regenerative drive cannot stop ...

Страница 14: ... and start up of the drive inspect the unit for mechanical integrity i e loose parts wires etc If physical damage was sustained during shipment leave the shipping container intact and notify the freight agent After unpacking check the drive nameplate catalog number against the purchase order See page 10 for nameplate location Storing Store the drive in its shipping container prior to installation ...

Страница 15: ...the Current Limit is enabled Remote Current Limit Available by the simple addition of a potentiometer Current Signal Follower lnput Allows the motor speed to be controlled by a current signal from a commercially available transducer The signal may be one of the following 1 5mA or 4 20mA Voltage Signal Follower lnput Allows the motor speed to be controlled by a voltage signal from a DC tachometer g...

Страница 16: ...would allow the User to mount the Focus on a wall or machine surface The Enclosed version has Start Stop and the Speed Control adjustment on the front cover for convenient operation Nameplate Information lways record the drive Model Number Part Number and Serial Number for future arranty situations and spare parts A good location to record these is on the Start up uide Worksheet on page 49 Enclose...

Страница 17: ...Field Field Part Volts Amps Volts Amps Volts Amps F3N2C Chassis 1 2 120 240 14 14 90 180 10 10 100 200 1 1 F3N2E NEMA 4 12 1 2 120 240 14 14 90 180 10 10 100 200 1 1 F3N5C Chassis 3 5 240 35 180 25 200 1 F3N5E NEMA 4 12 3 5 240 35 180 25 200 1 F3N5C F3N2C F3N2E F3N5E Enclosed Models Chassis Models ...

Страница 18: ...ximum Speed IR Compensation 0 20 of Rated Voltage Current Limit 0 150 of Selected Range Acceleration Time 0 3 20 seconds linear Deceleration Time 0 3 20 seconds linear Jog Speed 0 30 of Full Speed command Speed Loop Offset Adjustable Velocity Loop Stability Adjustable Current Loop Stability Adjustable Current Signal Follower Velocity Signal Follower Signal Follower Zero Bia CUSTOMER SELECTIONS JUM...

Страница 19: ...tage Signal Follower 10 200 Vdc at Maximum Speed FOCUS 3 OPTIONS CATALOG NUMBER DESCRIPTION F3SE Enclosure Small 2HP NEMA 4 12 F3LE Kits Large 5HP NEMA 4 12 F3M112 M 1HP 120V F3M224 Contactor 2HP 240V F3M524 Kits 3 5HP 240V F3DB224 HP 120V 2HP 240V F3DB1524 1 3 HP 120V I 5HP 240V F3DB124 Dynamic 1HP 240V F3DB0524 Braking HP 240V F3DB112 Kits 1HP 120V F3DB324 3HP 240V F3DB524 5HP 240V F3TS Toggle S...

Страница 20: ...N5C MOUNTING NON REGEN REGEN SMALL T1 4 PLACES 0 168 7 5 6 2 3 4 TB2 AC1 AC2 3 30 10 11 12 8 9 13 1 18 E 8 JP11 A D C C B A B 19 20 14 15 17 16 6 36 6 75 9 75 9 35 0 25 MOUNTING NON REGEN REGEN LARGE TB1 1 L A L 2 A B B D 1 E 8 A JP11 C C A B 19 20 B 17 18 14 15 16 12 13 2 9 10 11 7 8 5 6 3 4 TB2 13 00 12 00 CES AC2 G2 4 50 0 13 8 88 9 50 0 312 4 PLA ...

Страница 21: ...o steam vapors oil vapors flammable or combustible vapors chemical fumes and corrosive gases or liquids should be avoided unless an ppropriate enclosure has been supplied Ambient temperature is not to exceed 400 C a Page 15 12 00 8 88 6 13 6 91 1 05 1 05 3 70 9 50 0 13 Ø0 31 2 10 2 22 5 93 4 63 9 35 1 05 0 51 6 36 0 168 Dia 4 Places F3N2E F3N5E ...

Страница 22: ...nt unit It provides a positive disconnect o ocus 3 enclo f the motor armature when the controller is stopped preventing motor rotation in the event of SCR mis fire due to line noise This kit may also be required by local and or National Electrical Codes This kit also includes the DB dynamic braking poles an auxiliary normally open contact and all connection wires Focus 3 Contactor Kit P N F3M524 3...

Страница 23: ...ccordance with Nema specifications for dynamic braking Providing 3 stops in rapid succession with the load inertia equal to the motor inertia then cooling forever Note Large and small dynamic braking resistors shown 2 HP use small and the 3 5 HP use the large resistor Focus 3 Toggle Switch P N F3TS This kit can be mounted in the drive enclosure cover or remote mounted when used with chassis drives...

Страница 24: ...s 10 Vdc power supply for potentiometer Output 0 to 10 Vdc Uni polar 5 12 26 52 98 208 Vdc 180 Ohms v 24 Vdc 12 1 mA JP5 24 Vdc 120 Vac 20 mA JP5 120 Vac Contact Type Rating 2 Form A 1A 250 Vac 17 30 Vdc 50mA Max for control circuitry o ard P N F3NSBD Th re m gr of It ad Th pi is option is used in applications where isolation is quired between an external control signal and the otor controller whi...

Страница 25: ...ed to remotely display the motor speed in percent of maximum speed Included is a universal calibration board The 4 1 2 inch meter is mounted in a NEMA 1 wall mountable steel enclosure Remote RPM Speed Meter P N 2450 9021 This meter may be used to remotely display the motor RPM up to 2000rpm Included is a universal calibration board The 4 1 2inch meter is mounted in a NEMA 1 wall mountable steel en...

Страница 26: ...requiring remotely mounted industrial operator devices i e Operator Stations shown on previous page 120Vac Interface P N ACIF 6R Focus Run Stop Forward Reverse Jog and Auto Manual This kit is availab eries of drives It is designed to provide a 120 Vac interface for applications requiring re otely mou perato le for the Focus s m nted Industrial operator devices i e O r Stations shown on previous pa...

Страница 27: ...n to the Warnings and Cautions in each section before installing starting or maintaining this drive c lect tenan n Installation of this equipment must be done in accordance with the National Electrical Code and all other applicable regional or local codes Proper grounding conductor sizing and short circuit protection must be installed for safe operation Improper installation or operation of this c...

Страница 28: ... name AC Input DC Output Shunt Field Catalog HP Fusing Max Wire Armature Armature Wire Field Field Wire Part Volts Amps AWG Volts Amps AWG Volts Amps AWG F3N2C 1 2 15 Amp 250Vac 120 240 14 14 14 90 180 10 10 14 100 200 1 1 14 F3N2E 1 2 15 Am 250V p ac 120 240 14 14 14 90 180 10 10 14 100 200 1 1 14 F3N5C F3N5E 3 40 Amp 500Vac 240 21 10 180 15 10 200 1 14 F3N5C F3N5E 5 40 Amp 500Vac 240 1 14 35 8 1...

Страница 29: ...used Tach wires will also need to be swapped Or Exchange Fl and F2 Motor Shunt field leads If of Opti n Kits Installation o Do not install option kits until you have verified the basic operation as outlined in the tart Up section re installation of option kits before verification of basic drive operation will make S P troubleshooting much more difficult Option kits are often installed incorrectly ...

Страница 30: ...er Wiring 2 HP Focus 3 Models F3N2E F3N2C F F A A Earth Connection AC Line Input A A are the motor Armature leads will not be present on F F are a shunt wound motors Field leads they Permanent Magnet or Universal Motors ...

Страница 31: ...r Wiring 3 5 HP Focus 3 Models F3N5E F3N5C A A are the motor Armature leads F F are a shunt wound motors Field leads they will not be present on Permanent Magnet or Universal Motors Earth Connection AC Line Input F F A A ...

Страница 32: ...elay common connection 6 Run Relay Contact Normally Closed connection Rated 0 5amps 120VAC for non inductive loads 7 Jog Input When 24 Vdc is applied to this input the output of the accel decel circuit is electronically disconnected from the speed loop and the jog speed command from the jog speed pot is electronically switched jog speed command can be configured as a Thread speed ined jog speed by...

Страница 33: ...s terminal the speed command input to the accel decel circuit is switched from the standard speed pot input to the follower current or voltage speed command derived from terminal TB2 pins 17 or 18 If the current voltage follower is the only signal used terminals TB2 pins 2 16 must be jumpered Note The Current TB2 pin 17 o ce input to drive must be isolated from earth ground If it such as Signal Is...

Страница 34: ...terminal block 2 is installed so that control wires are o the terminal point from the the block For enclosed drives s d up 900 angle from the drive f the control wires extend out to the side there is not sufficient clea cover rance space for the enclosure If the customer supplied motor thermal is not used pins 1 2 must be jumpered o Shie ed w recommend other signal wire connections Shields sho the...

Страница 35: ... would require possible d internal wiring changes The two wire configuration top of next page is ed for remote contol of the drive i e PLC control These connections ted from earth ground e The Chassis Model has no operator devices connected to the drive control terminal strip The Speed Potentiometer is The only connections made are connections from terminal 3 to 4 which is required for three wire ...

Страница 36: ...ltage ignals No connections are to be tied to earth ground Two Wire ON OFF with remote 0 to 10Vdc Speed command this signal must be isolated Drive will not Start without this Three Wire Start Stop With Uni polar Speed Potentiometer DO NOT Connect Shield to Earth Ground Three Wire Start Stop with Run Jog Selector Sw With Uni polar Speed Potentiometer DO NOT Connect Shield to Earth Drive will not St...

Страница 37: ... Run Jog Selector Switch With Uni polar Speed Potentiometer DO NOT Connect Shield to Earth Ground With Manual tor Switch Manua Auto or Voltage Signal With Drive will not Start without this Auto Speed command Selec l Speed Pot Either Current Signal DC Tachometer Feedback DO NOT Connect Shield to Earth Ground Shielded cable should be 3 conductor with overall shield w pot end tied off and dressed Cab...

Страница 38: ...ctor Switch With Uni ter Wit Rem This potentiometer is available from Control Techniques see accessories section polar Speed Potentiome h ote Current Limit Potentiometer page 20 With DC Tachometer Feedback Connect Shields to Earth Ground DO NOT DO NOT Connect Shield to Earth Ground Drive will not Start without this Shielded cable should be 3 conductor with overall shield w pot end tied off and dre...

Страница 39: ... Service Center 1 800 367 8067 Cable P N 3CONCBL XXX XXX in feet Speed Potentiometer P N SpdPot Standard Unipolar Speed Potentiometer Wiring CCW counter clockwise Wiper CW CCW 9 10 12 10vdc Ref Common Speed Pot Rear View Do Not Connect shield to Earth This will result in permanent damage to the Drive and will not be covered under WARRANTY ...

Страница 40: ...cy Selector 50 JP11 Input Voltage 120 or 240Vac 240Vac Selector see Table below JP2 Speed or Current Control Speed or Current Speed Mode see next page SPD CUR JP3 Tachometer Feedback Low 6 5 17 4 Vdc or HI Range at max speed HI 60 160 Vdc h meter TACH or Armature ure ARM or Remote RMT al or Remote RMT Local W 90 Vdc or or 60Hz w jumper 60Hz Input Line Voltage JP11 Jumper Positions 120Vac A to E an...

Страница 41: ...ition F t Control Mode re p al to the armature current a drive configured as a Current as a Torque Regulator re g the Focus drive as Torque Regulator make the follow ments Select current CUR control 4 Select tachometer TACH feedba In torque control mode the motor speed is determined by how much load there is on the motor and the torque level set on the drive If torque in the motor as set by the Dr...

Страница 42: ...ma Voltag Rang Selec JP8 Current Limit Pot selection l or Remote JP7 Optional Motor Contactor control connection 1 Maximum Output Current Selection JP9 Regul tion Mode Speed JP2 50 60 Hz Opera in 6 JP1 Loca JP6 a JP Current A tion 0Hz ture meter ck a ture e e tor 0 L1 L2 F F A X JP11 AC Input Range Selection ...

Страница 43: ... 5 to 17 4 Vdc Hi 60 to 160 Vdc JP4 Feedback Selector Tachometer Tach Armature Arm JP8 Armature Voltage 90 Vdc 180 Vdc JP11 Input Voltage 120 Vac A to E B to D Factory Settings 240 Vac A to C B to C Bold Fonts indicate Photo shown jumpered for 120Vac input ...

Страница 44: ... 5 5 A B 6 4 A C 7 5 A D 10A Select based on Armature requirements JP6 JP7 Remote Current Limit Pot Select Local Uses Current Limit pot on Control Board Remote Uses remote Current limit Potentiometer Bold Fonts indicate Factory Settings Page 38 ...

Страница 45: ... will illuminate any time one of the three conditions are met 1 The drive is at the maximum output current as set by the current limit potentiometer and the selected position of JP9 2 The motor is at the maximum output voltage as possible based on the supply voltage 3 The motor armature is open circuit no motor connected Current Limit LED Run LED ...

Страница 46: ...L2 F F A X Current Stability ISTB Velocity Stability VSTB Speed Loop Offset Maximum Speed IR Compensation Current Limit Acceleration Time Jog Speed Deceleration Time Minimum Speed Follower Zero Bias Adjust Voltage Follower Gain Adjust Current Follower Gain Adjust Factory Calibration Do Not Adjust ...

Страница 47: ...e Adjust the MIN SPD pot motor speed is reached Adjust the ACCEL and DECEL pots clockwise to increase the linear acceleration and deceleration times 0 3 30 seconds These adjustments are independent from each other Note Controlled deceleration time occurs when the speed pot is turned down but not when the start stop switch is placed in the STOP position Note When the drive is used in torque current...

Страница 48: ...ustomer Adjustmen Acceleration and Deceleration Time adjustments Local Current Limit Limits maximum Output Curre MIN SPD Adjust for minimum Motor speed MAX SPD Adjust for maximum Motor speed JOG SPEED Sets Jog d Spee nt ...

Страница 49: ...e tant of this lead circuit Clockwise rotation causes the drive to respond more quickly to spee mand speed feedback changes but increases the overshoot experienced by th e Counterclockwise adjustment of this pot dampens the drive response It is factor set at the midway position rrent Stability ISTAB characteristics of the drive to the dynamic cha The drive s inner current loop includes an ele rica...

Страница 50: ...tment procedure Current Stability nt ISTB Adjust for curre loop stability Factory Adjustment only DO NOT ADJUST IR Comp d Adjust for motor spee droop due to load Speed Loop Offset Adjust for zero creep speed Velocity Stability VSTB Adjust for speed loop stability ...

Страница 51: ... to the voltage signal Signal Follower Zero Bias BIA Adjust the BIAS pot so the drive is at zero speed when the minimum current signal follower speed command 4 20 or 1 5 mA is applied If a 4 20mA speed command is required use the optional signal isolation board F3NSBD Voltage Speed Signal Follower Gain SP REF GAIN The SP REF GAIN pot calibrates the User supplied Voltage Signal Follower peed comman...

Страница 52: ...Page 46 Tuning Adjus Optional tments Current Ref Gain Speed Ref Gain Zero Bias ...

Страница 53: ...Page 47 ...

Страница 54: ...Page 48 ...

Страница 55: ...est that you first run your motor using Armature Voltage initially After you have set the motors maximum speed in Armature Voltage feedback you can check your tachometers output to verify that it producing the correct output before actually using it d Regulation Mode Speed most common case Torque Focus drives come to you factory set for Speed Regulation mode which is the most common case Even if y...

Страница 56: ...JP8 to Low then go to STEP 7 If you must use 240 Vac Call Tech Support for a solution otherwise go to STEP 4 STEP 4 If your motor field voltage is 200 Vdc then you must use 230 Vac for Input Power Set JP11 as shown and Set JP8 to Hi then go to STEP 7 otherwise STOP Call Tech Support for a solution STEP 5 If your motor armature voltage is greater than 110 Vdc then you should use 230 Vac for Input P...

Страница 57: ...elow FOCUS Catalog DC Output Current JP9 Number A Jumper Position 2 7 No Jumper 1 4 2 HP 5 5 A F3N2C 6 4 B F3N2E 7 5 C 10 D go Are you applying a Focus Model F3N5C the letter that matches up most closely with your motors Armature Amp rating from the table below otherwise go to STEP 7 then to STEP 8 STEP 7a or F3N5E If yes then set jumper JP9 to FOCUS Catalog DC Output Current JP9 Number A Jumper P...

Страница 58: ...a out of box ogramming with t was just setup wo ged in the previous pages jumper I tallation of Option Kit Page 52 Do not install option kits until you have verified the basic operation as outlined in the Start Up sect re ins allatio e verification of basic drive operation will make oubleshooting much more difficult Option kits are often installed incorrectly and one e kits were installed ion t n ...

Страница 59: ...dback JP4 AR In this procedure leave jumper in armature lea speed regulation a For Chassis Units Only 1 3 7 8 9 close to run Jog enable 10vdc Drive run enable Jog ref 0 to 30 A A F F FE1 FE2 Regen only A1 A2 F1 F2 Motor Armature Motor Field FOCUS 3 Chassis Unit Note Permanent Magnet Motors do not have Field F1 F2 connections 1 4 5 9 Drive run enable A A F F FE1 FE2 Regen only A1 A2 F1 F2 Motor Arm...

Страница 60: ...required Set JP4 to Tach position Connect tachometer signal to drive to 19 to 20 Set JP8 to Hi if the following calculated voltage is in the range 60 to 160 Vdc Set JP8 to Low if the following calculated voltage is in the range 6 5 to 17 4 Vdc Tach voltage at max speed tach volts per 1000rpm X max motor rpm 5 1000 If the calculated voltage is NOT in the ranges listed above consult factory Repeat s...

Страница 61: ...ommand input TB2 10 is now the drive current reference The ccel decel adjustments on e rate of change of urrent RR position and JP4 to TACH position but DO NOT connect a Tachomete T a the control board will now control th c Note that the drive is now controlling motor torque and NOT speed therefore if the current reference is set to a higher level than the torque required by the load the motor wil...

Страница 62: ...rten motor life B If a motor blower is used make sure that the air passages are clean and the impeller is free to rotate If air filters are used they should be cleaned at regular intervals or replaced if they are disposable Any reduction in cooling air will increase motor heating C Inspect the commutator and brushes Replace the brushes if needed Make sure that the proper brush grade is used D The ...

Страница 63: ...event of any driv manua Notes A Loose or broken wire connections i ounding within the interconnections or the power wiring al failure at the motor DO NOT make adjustments or replace components before checkin monitor all LED indicator lights before proceeding with troubleshoo for blown fuses ld be noted that modern solid state electronic circuitry is highly reliable Often e ms which appear to be el...

Страница 64: ...ing or jumper programming during installation D Defective main PC board component replace as required See Critical Components E Motor shaft jammed determine cause and correct F Excessive carbon dust from brushes in motor determine cause and correct FUSES BLOW WHEN SPEED POTENTIOMETER IS ADVANCED FROM ZERO A Motor is overloaded reduce load as required B Motor is defective consult motor instruction ...

Страница 65: ...or defe Incorrect jumper progra programming t F High resistance ground VOLTAGE CHECK CHART M Defective rectifier cube replace as required See Critical Components N Defective component on main PC board replace as required See Critical ctive speed potentiometer check the wiring mming check jumper P Q If the control after rechecking all the wiring for proper and secure connections is make still inope...

Страница 66: ...connect the Armature output to a resistive e a 75 watt light bulb screwed into a light bulb socket base as Basic Test Power Wiring Focus on the bench load One could us shown below Page 60 nd est g Therefore before testing one should record the settings before test so at they could be reset back after the test In order to test the Focus one would need to setup the input for 115 Vac operation a for ...

Страница 67: ...wer Supply Regulator and Powe Sections Field Supply Checkout If one wants to check the Field Supply power should be rem moved over to the F and F terminals use a 75 W bulb or oved and the light bulb less for the field Use of age the Field rectifiers Then upon ulb should light to full brightness and the voltage across If the Focus passes these basic tests the drive should be OK and the drive re Vol...

Страница 68: ...tions though are different The chassis versions of the Focus 3 drives are slightly larger the Focus 2 drives unless the Focus 2 drive was supplied with the contactor option whe are equivalent in size Focus 2 Power and Motor Connections across the left side Focus 3 Power and Motor Connections across the bottom Signal Connections down the right top Signal Connections down the 10 19 14 24 Focus 2 2 H...

Страница 69: ...t Speed Potentiometer DC Tachometer or AC Tachometer 1 3 4 5 6 7 8 9 10 11 12 13 2 14 15 1 17 Stop Start Speed Remote Current Limit If used 6 18 19 20 DC Tachometer Only AC Tachometer with Option Motor Thermal 24 Run Input Jog Input Jog Pot Supply Min Spd Pot Manual Input Current Source Input 24 Run Input 10 Vdc Speed Ref Signal Common Tie Point Tie Point Auto Voltage Source Input Run Run Jog Inpu...

Страница 70: ...tional Curr ndard O Remote Current Limit Standard Optional Ne Standard Optional AC Tach Feedback Optional Standard Re Available Not ilable Reversing Focus 3 Regen Driv al E og Speed ent Voltage follower Sta ptional ma 4 12 ference Isolator Ava e Option nclosed Units ...

Страница 71: ...CTAN 125 A Focus 3 Replacing Focus 2 with Focus 3 Drives CTAN 130 1 1 Focus 3 Tach Follower Applications CTAN 204 1 0 Focus 3 Power Wiring Guidelines CTAN 213 1 1 Focus 3 Eddy Current Controller Retrofit CTAN 215 1 0 Focus Family Earth Grounding Isolation CTAN 216 1 0 Focus 3 Eddy Current Replacement Solution CTAN 235 1 0 Focus 3 Adjustable Brake Dynamometer App s CTAN 240 1 0 Focus 3 Speed Master...

Страница 72: ...eed feedback tachometer is directed to the second drive as a speed command A disadvantage to the parallel method is that if for some reason the first drive slows down while in a current limit condition for example the second drive would no longer follow since it may not be in a current limit condition This is not the case for the cascaded method since the drive is following the actual speed of the...

Страница 73: ... Manual Auto 16 18 20 19 1 4 5 9 Drive run enable A A F F FE1 FE2 Regen only A1 A2 F1 F2 Motor Armature Motor Field FOCUS 3 2 3 Stop Start Speed Pot 10 12 Motor Thermal Manual Auto 16 T 20 19 TB2 TB2 5 8 3 4 5 Isolator Board P N 2415 4050 TB1 TB2 24vdc Input Common Output A2 ield TB2 T Focus 3 Non Regen Master Follower Application Motor F TB2 ...

Страница 74: ......

Страница 75: ... terminal connection on the control terminal strip TB2 can e connected to earth ground in any way even momentarily Any earth ground on these terminals will effectively short out the power line through the circuit board traces The Focus 3 Regenerative drives F3R2C F3R2E F3R5C F3R5E are isolated from the power line and therefore connections on TB2 can be tied to earth ground b Power Block AC AC M Co...

Страница 76: ...Damage to Focus 3 Circuit Board caused by connecting speed potentiometer to earth ground Typical Damaged circuit trace due To earth ground connection on Control terminal strip Page 70 ...

Страница 77: ...mounted in the enclosure or in piece of plastic track included with kit control signal and the motor controller which may or may not be at earth ground CW potential It can be utilized to isolate a variety of voltage or current signals see specifications below It may also be used simply to isolate the speed adjustm a a Run Stop 120 VAC Speed Pot F3NSBD TB 2 Focus Terminal Strip Or signal from a PLC...

Страница 78: ...Transformer Transformer KVA 1 5 x Rated Armature Current x 120 Vac or 240 Example Your DC Motor has a 10 A armature KVA 1 5 x 10 A x 120 Vac 2 4 KVA use 2 5 KVA L1 L2 12 TB2 Focus 3 Non regen DC Drive 120 240 VAC Input 120 240 VAC Output Isolation Transformer Heat Sink GND Lug ...

Страница 79: ...2C and F3N2E use the board as it is shipped Replacement Instruction for Control Board CTRI1210 can be found at our website at www emersonct com or click the link below CTRI210 2415 4000 Main Control Board This control board is us both the all Focus 3 non regen Speed Adjust Pot 3533 0502 Potentiometer 3549 002 Knob Power Block 3720 004 F3N2C F3N2E Fuses 3705 032 15 A 250 Vac Power Block 3720 010A F...

Страница 80: ...the drive but NOT in run Measure the dc voltage at JP9 any of the free pins on the left side with respect to signal common terminal 12 Adjust the offset adj potentiometer so that the digital voltage meter set for 2 volt scale reads as close to 0 000 as possible but NOT negative 0 010 is a reasonable value 0 010 Term 12 ...

Страница 81: ...oltage 49 cus 1 4 cus 2 3 4 62 63 64 65 sing 9 22 Fi Fo Fo Fu I Input Line Voltage 34 49 stallation Kits 13 olation 3 13 28 65 69 72 J In Is Jum C 9 12 27 39 54 64 Current R L Jumpers 3 21 34 35 36 3 K per Settings rrent Limit u anges 3 ine Voltage 34 49 7 50 51 Kits I O L nstallation 2 3 13 16 17 18 23 52 ption Kits 2 3 7 16 17 18 23 49 52 LED 9 Current Limit 9 1 Indicators 3 3 57 2 27 39 54 64 M...

Страница 82: ... Speed Control Armature Voltage Feedback 2 7 Speed Pot 3 13 27 29 Tachometer Feedback 12 23 3 Start Up 2 3 21 23 52 53 54 Stopping Quick Stopping 2 7 3 4 54 T Terminals 29 30 31 32 45 58 59 Torque Control 3 9 12 35 49 55 Troubleshooting 57 Tuning Stability 12 43 W Wiring Control 3 21 23 26 Motor 2 Power 3 21 24 25 60 65 ...

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