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maxon motor 

Operating Instructions 

4-Q-DC Servo Control LSC 30/2 

2 Technical Data 

2.1 Electrical 

data 

Supply voltage V

CC

.....................................................................................................12 – 30 VDC 

Max. output voltage.................................................................................................................25 V 
Max. output current I

max

.............................................................................................................2 A 

Max. power output .................................................................................................................50 W 
It is advisable to consider mounting on a heat sinking surface if ambient temperature is high and 
there is a high power loss in the LSC ! 

2.2 Inputs 

Set value “+Set / -Set”.......................... configurable .......................-10 ... +10 V or -3.9 ... +3.9 V 
Disable “Dis IN”.................................... Disable ....................................................... min. V

CC

 - 1 V 

 Enable..................................................... max. Gnd + 1 V 
DC tacho “+T / -T”.................................................................................min. 2 VDC, max. 50 VDC 
Encoder signals “Ch A / Ch B” .................................................................max. 100 kHz, TTL level 

2.3 Outputs 

Status reading “Ready” ........................ Open collector.........................max. 30 VDC (I

L

 < 20 mA) 

 Error .......................................... “Ready” 

= high impedant 

 

Ready........................................................“Ready” = Gnd 

2.4 Voltage 

output 

Auxiliary voltages “+Vaux / -Vaux” ..........................+3.9 VDC, max. 2 mA / -3.9 VDC, max. 2 mA 
Encoder supply voltage “+Venc” ...................................................................+5 VDC, max. 80 mA 

2.5 Motor 

connections 

Motor +; Motor - 

2.6 Trim 

potentiometers 

n

max

IxR compensation 
Offset 
I

max

  

gain 

2.7 Protection 

Heat monitoring of power stage .......................................................................................T > 85°C 

2.8 LED 

indicator 

green LED..........................................................................................................................READY 
red LED............................................................................................................................. ERROR 

2.9 

Ambient temperature / humidity range 

Operation ........................................................................................................................ 0...+45°C 
Storage ........................................................................................................................-40...+85°C 
No condensation ............................................................................................................. 20...80 % 

2.10 Mechanical 

data 

Weight...................................................................................................................... approx. 330 g 
Mounting plate ...................................................................................................... for 4 screws M4 
Dimensions .............................................................................see dimension drawing, 

chapter 10

2.11 Terminals 

separable PCB terminals ................................................................................................... 16-pole 
 Pitch ..................................................................... 3.5 mm 
 

suitable for wire cross-section....................... AWG 28-18 

0.14 ... 1 mm

2

 multiple-stranded; 0.14 ... 1.3 mm

2

 single wire 

June 2010 Edition / Subject to change 

maxon motor control 

3

 

Summary of Contents for 4-Q-DC Servo Control LSC 30/2

Page 1: ...well suited for fixed speed adjustment using internal potentiometer Its wide input voltage ranging from 12 30 VDC makes the LSC very flexible for use with different voltage sources The modular style...

Page 2: ...monitoring and safety equipment If the equipment breaks down if it is operated incorrectly if the control unit breaks down or if the cables break etc it must be ensured that the drive or the complete...

Page 3: ...IL 20 mA Error Ready high impedant Ready Ready Gnd 2 4 Voltage output Auxiliary voltages Vaux Vaux 3 9 VDC max 2 mA 3 9 VDC max 2 mA Encoder supply voltage Venc 5 VDC max 80 mA 2 5 Motor connections M...

Page 4: ...SigGnd Vaux Gnd Set Ready T ChA T ChB Gnd Venc 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 1 1 1 1 1 1 1 Motor Motor Vcc Vaux OFF OFF OFF OFF OFF ON ON ON ON ON 1 1 2 2 1 2 13 13 1 2 1 2 12 30 VDC IxR T acho unt...

Page 5: ...3 9V 8 7 50k internal OFF OFF OFF ON ON ON 6 5 9 3 9V 0V 8 7 P3 Offset with external set vallue 10 10 V external with external potentiometer 3 9 3 9 V with internal potentiometer P3 internal negative...

Page 6: ...ed at UN n0 rpm Speed torque gradient of motor n M rpm mNm Sought values Supply voltage VCC V Solution V M M n n n U V B B N CC 5 0 Choose a power supply capable of supplying this calculated voltage u...

Page 7: ...et value and adjust the motor to speed 0 rpm with potentiometer P3 Offset Important DIP switch S9 must be set in the ON position for offset adjustment Applicable to IxR compensation only 5 Slowly incr...

Page 8: ...or current negative set value Set Set negative motor voltage or current DIP switch S10 OFF DIP switch S9 ON Use of external potentiometer Set value range 3 9 3 9 V Input voltage range 3 9 3 9 V Input...

Page 9: ...25W 4k7 0 25W 4k7 0 25W b Switch open Enable switch closed Disable 10 Dis IN Dis V terminal 11 or Vcc terminal 3 5 1 3 DC tacho T positive tacho voltage terminal 14 T negative tacho voltage terminal...

Page 10: ...t is max encoder frequency of 100 kHz DIP switch S8 OFF high DIP switch S8 ON low Max input frequency is 100 kHz Max input frequency is 6 kHz Encoder pulses per revolution maximum motor speed Encoder...

Page 11: ...2 2 Encoder supply Venc Auxiliary voltage for supplying the encoder Venc Encoder supply voltage terminal 16 Output voltage 5 0 VDC referenced to Gnd Max output current 80 mA 5 2 3 Status reading Read...

Page 12: ...ature High power loss in the LSC Bad convection Heat sinking surface too small 7 Error Handling Error Possible cause of error Action Motor does not turn Supply voltage VCC 12 VDC Check terminal 3 volt...

Page 13: ...magnetically harsh environment Normally connect shielding on both sides LSC housing Place shielding on one side if there are 50 60 Hz interference problems Digital signals Disable Ready No shielding n...

Page 14: ...30 2 Operating Instructions 10 Dimension Drawing Dimensions in mm 11 Spare Parts List maxon motor order number Designation 282310 16 poles pluggable PCB connector pitch 3 5 mm 14 maxon motor control...

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