maxon motor 1-Q-EC Instructions Manual

maxon motor

maxon motor control 1-Q-EC Amplifier DEC 50/5
Order number 230572
Operating Instructions October 2008 Edition

The DEC (Digital EC Controller) is a 1-quadrant amplifier for controlling electronically commutated (brushless)
DC motors.

• Digital speed control

• Maximum speed: 120 000 rpm (motor with 1 pole pair)

• Operates as speed control, current control or open loop

speed control

• /Brake, direction and /disable input

• AUX connection: adjustable function

(+5 V output or input for changing speed)

• Status indicator with red and green LED

• Set value input through built-in potentiometer (several

speed ranges can be selected) or through
analogue set value input (0 ... +5 V)

• Maximum current limit adjustable

• Gain can be adjusted in two stages

• Adjustable speed ramp

• Protection against heat overload

• Blockage protection (current limit for blocked motor)

• Plug-in terminal clamp

Table of Contents

1

Safety Instructions..............................................................................................................................................2

2 Performance Data ..............................................................................................................................................3

3 Minimum External Wiring for Different Modes of Operation...............................................................................4

4 Operating Instructions ........................................................................................................................................6

5 Inputs and Outputs.............................................................................................................................................8

6 Switch Functions ..............................................................................................................................................12

7 Speed Ranges..................................................................................................................................................12

8 Potentiometer Functions...................................................................................................................................13

9 Operating Status Display..................................................................................................................................14

10 Protection .........................................................................................................................................................15

11 EMC-compliant installation...............................................................................................................................15

12 Block Diagram..................................................................................................................................................16

13 Dimension Drawing ..........................................................................................................................................16

The latest edition of these operating instructions may be found in the internet as a PDF-file under

www.maxonmotor.com category “Service & Downloads”, Order number 230572.

maxon motor

1-Q-EC Amplifier DEC 50/5 Operating Instructions

1 Safety Instructions

Skilled Personnel

Only experienced, skilled personnel should install and start the equipment.

Statutory regulations

The user must ensure that the amplifier and the components belonging to it are
assembled and connected according to local statutory regulations.

Load disconnected

For initial operation, the motor should be free running, i.e. with the load
disconnected.

Additional safety equipment
Any electronic apparatus is, in principle, not fail-safe. Machines and apparatus
must therefore be fitted with independent 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
apparatus is kept in a safe operating mode.

Repairs

Repairs may only be carried out by authorised personnel or the manufacturer. It is
dangerous for the user to open the unit or carry out any repairs.

Danger
Ensure that no apparatus is connected to the electrical supply during installation
of the DEC 50/5. After switching on, do not touch any live parts!

Max. supply voltage

Make sure that the supply voltage is between 10 and 50 VDC. Voltages higher
than 60 VDC or of wrong polarity will destroy the unit.

Short circuit and earth fault
The amplifier is not protected against:
winding short circuits, winding short circuits against ground safety earth or Gnd!

Electrostatic sensitive device (ESD)

2 maxon motor control October 2008 Edition / Doc.No. 544910-06 / subject to change

maxon motor

Operating Instructions 1-Q-EC Amplifier DEC 50/5

2 Performance Data

2.1 Electrical data

Supply voltage VCC (Ripple < 5 %)..............................................................................10 - 50 VDC

Max. output voltage........................................................................................................ 0.95 · V

CC

Continuous output current I

cont

..................................................................................................5 A

Max. output current I

max

........................................................................................................... 10 A

Switching frequency............................................................................................................ 39 kHz

Max. speed (motor with 1 pole pair)...........................................................................120 000 rpm

2.2 Inputs

Speed .....................................................................................................analogue input (0 ... 5 V)

Resolution: 1024 steps

/Disable............................................................................TTL, CMOS (5V) or switch against Gnd

Direction.........................................................................TTL, CMOS (5V) ) or switch against Gnd

/Brake ............................................................................TTL, CMOS (5V) ) or switch against Gnd

Hall sensor...........................................................................................................................1, 2, 3

2.3 Inputs / outputs

AUX (configurable).............................................................................digital input / +5 VDC output

2.4 Voltage outputs

Hall sensors supply voltage VCC Hall .....................................................7 ... 12 VDC, max. 30 mA

2.5 Motor connections

Motor winding 1
Motor winding 2
Motor winding 3

2.6 Trim potentiometers

Speed 1, Speed 2 / Ramp, I

max

, gain

2.7 LED indicator

Operating indicator: green LED
Error indicator: red LED

2.8 Ambient temperature / humidity range

Operation...................................................................................................................-10 ... +45°C

Storage ......................................................................................................................-40 ... +85°C

No condensation...........................................................................................................20 ... 80 %

2.9 Protective functions

Heat monitoring of power stage.....................................................................................T > 100°C

Blockage protection ..................Motor current limit, if motor shaft is blocked for longer than 1.5 s

2.10 Mechanical data

Weight...................................................................................................................... approx. 155 g

Dimensions (L x W x H)..........................................................see dimension drawing, chapter 13

Mounting plate ......................................................................................................for 4 screws M3

Mounting hole separation............................................................................................ 87 x 39 mm

2.11 Terminals

PCB clamps (plug-in terminal clamps)..............................................................................15 poles

Pitch............................................................................................................................. 3.5 mm

suitable for wire cross section ..... 0.14...1mm

2

multiple-stranded or 0.14...1.3mm2 single wire

AWG 16-26

October 2008 Edition / Doc.No. 544910-06 / subject to change maxon motor control 3

maxon motor

1-Q-EC Amplifier DEC 50/5 Operating Instructions

3 Minimum External Wiring for Different Modes of Operation

3.1 Speed control

4 maxon motor control October 2008 Edition / Doc.No. 544910-06 / subject to change

maxon motor

Operating Instructions 1-Q-EC Amplifier DEC 50/5

3.2 Current control and open loop speed control

October 2008 Edition / Doc.No. 544910-06 / subject to change maxon motor control 5