SCP-LC-32-03 (32 V, 3 A) 4-Q current controller for brushed DC ...

Manual SCP-LC-32-03 V 1.1 page 1SCP-LC-32-03 (32 V, 3 A)4-Q current controller for brushed DC-motorsIn generalThe module SCP-LC-32-03 is a current controller for brushed DC-motors with a linear output stage. Itprovides operation in four quadrants, which means controlled acceleration and decceleration in bothturning directions of the motor. The operation mode is current control. The maximum current of0...3A can be adjusted by an integrated potentiometer. The output current is to be set by the means ofan external voltage or by an external potentiometer. Auxiliary voltages for potentiometer are providedby teh module. Disabling the module can be reached by an according input. The SCP-LC-32-03 isprotected against thermal overload by an internally integrated supervision circuit.e-motion Gesellschaft für Antriebstechnik mbH, Zettachring 2, D-70567 Stuttgart, GermanyTel.: +49(0)711-7221535, Fax.: +49(0)711-7221548, E-mail: mgmt@e-motion-controls.com12/01

Manual SCP-LC-32-03 V 1.1 page 2specificationelectrical data power supply voltage12- 30 V DCOutput voltage+/-6V ... +/-24VAdjustable current limitation0…3 Ainputscurrent set value 1-10...+10 Vcurrent set value 1-3...+3 VdisableTTL / CMOS / Schalteroutputsauxiliary voltage source –3 Vauxiliary voltage source +3 Vauxiliary voltage source +5 V 50 mAweight with terminal connector 165 gdimensions (LxWxH) 103 x 70 x 39 mmflangeDistance between holes of mounting 96 x 54mmflange (4x screws M3)temperature-range operation0...+45 o Cstorage-40...+80 o Chumidity range non condensing 20% -80% rel. hum.Safety note• operating voltages exceeding the specified values or reverse-connection will destroy the devices.• Unauthorised opening and improper repairs will put the user in danger.• If the module is brought from a cold environment into the operating environment, there can becondensation. Wait until the module has reached the right temperature and is absolutely drybefore it is put into operation.Terminals1 Vcc2 Gnd3 + Vref4 - Vref5 - Motor6 + Motor7 Gnd8 +5V ( max. 50mA )9 nc10 nc11 - Set Value 112 + Set Value 113 - Set Value 214 + Set Value 215 Disable16 Gnde-motion Gesellschaft für Antriebstechnik mbH, Zettachring 2, D-70567 Stuttgart, GermanyTel.: +49(0)711-7221535, Fax.: +49(0)711-7221548, E-mail: mgmt@e-motion-controls.com12/01

Manual SCP-LC-32-03 V 1.1 page 3Control input for disable (Dis)The control input „Dis“ ist for disabling the unit and can be controlled as following:• With external switch• Open collector transistor• With TTL/CMOS module„Dis“ not connected or high levelMotor is turning"Dis" connected to Gnd (16) or low levelMotor does not turnEven when the module is diabled a residual current of 25mA maximum can occur. This is not a failureof the drive, some small motors without load could drift away.Set value for currentThe set value for the current can be preset like following:a) By the means of an external potentiometer ( Start and End at 3 + 4, wiper at 13 )b) By the means of external voltage -10V .. +10V at 11 + 12c) By the means of external voltage -3V .. +3V at 13 + 14a) Set value with an external potentiometeran external potentiometer with 10kOhm to 47kOhm is required. The potentiometer is to beconnected as following:Start: at „+Vref (3)“End: at „-Vrer (4)“wiper: at „-Sv 2 (13)“b) Set value with external voltage -10V .. +10VThe external set value is connected as following:Set value Gnd to „-Sv1 (11)“Set value at „+Sv1 (12)“c) Set value with external voltage -3V .. +3VThe external set value is connected as following:Set value Gnd to „-Sv2 (13)“Set value at „+Sv2 (14)“Adjusting Offset (Offset)The offset preset by trimming potentiometer „offset“ as follows:Type Maximum left position Maximum right positionSCP-LC-32-03 Offset to ccw-operation Offset to cw-operationAdjusting motor current (Imax)The current preset by trimming potentiometer „Imax“ as follows:Type Maximum left position Maximum right positionSCP-LC-32-03 0 A 3AShut down at overheatThe controller shuts down automatically when the temperature at the inside of the heat sink exceeds80°C .Assembly notee-motion Gesellschaft für Antriebstechnik mbH, Zettachring 2, D-70567 Stuttgart, GermanyTel.: +49(0)711-7221535, Fax.: +49(0)711-7221548, E-mail: mgmt@e-motion-controls.com12/01

Manual SCP-LC-32-03 V 1.1 page 4• Optimum heat dissipation is achieved by mounting the module on an cooling surface and by theuse of a thermal conduction paste.Considerations on power supplyOutput voltage :Output current :> 12 V and < 30V with a maximumripple of < 5%Regarding mximum motor current + foraccelerationConsiderations to put the device into operation:Please follow the sequence!1. Connect Motor to (5) + (6)2. connect input „disable“ if aplicable.3. preset potentiometers- Potentiometer Offset is adjusted ex works.- Potentiometer Imax is adjusted on a maximum current of 3A.4. Connect Set Valuea) external potentiometer 10-47k ( ends at 3 + 4, wiper at 13 ) orb) external voltage-10V .. +10V an 11 + 12 orc) external voltage-3V .. +3V an 13 + 145. connect power supply at 1 + 2 ( !!! check polarity !!! )6. Set current set value to 0V and adjust potentiometer Offset until the motor does not turn.7. Adjust maximum current by potentiometer Imax.Check this adjustment for the whole speed and loadrange.e-motion Gesellschaft für Antriebstechnik mbH, Zettachring 2, D-70567 Stuttgart, GermanyTel.: +49(0)711-7221535, Fax.: +49(0)711-7221548, E-mail: mgmt@e-motion-controls.com12/01