maxon motor ADS_E 50/5, ADS 50/5 Instructions Manual

maxon motor control ADS_E 50/5

Order number 166143

Operating Instructions June 1999 edition

The ADS_E 50/5 is a powerful servo­amplifier for driving permanent magnet
DC motors up to 250 Watts.

Four modes can be selected by
DIP switches on the board:

• Speed control using tacho signals

• Speed control using encoder signals

• I x R compensated speed control

• Torque or current control

The ADS_E 50/5 is protected against
excess current, excess temperature and
short circuit on the motor winding.

With the FET power transistors incorpo­rated in the servoamplifier, an efficiency of
up to 95% is achieved.

A built in motor choke combined with the
high PWM frequency of 50 kHz allows the
connection of motors with a very low
inductivity.
In most cases an external choke can be
omitted.

Thanks to the wide input power supply range of 12 - 50 VDC, the ADS_E 50/5 is very versatile and can be used
with various power supplies.
The Europa card size allows the unit to be installed in a 19“-subrack or in a plug-in card system. Thanks to the
controller circuit design, the ADS_E 50/5 is easily and quickly installed.

Table of Contents

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

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

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

4 Operating Instructions........................................................................................................................................5

5 Functions ...........................................................................................................................................................7

6 Additional Possible Adjustments......................................................................................................................10

7 Error Handling..................................................................................................................................................11

8 Block Circuit Diagram......................................................................................................................................12

9 Pin Allocation Connector DIN 41612 Version H7/F24...................................................................................12

10 Dimension Drawing..........................................................................................................................................13

11 Accessories (not part of delivery) ...................................................................................................................13

The latest edition of this operating instructions may also be found in the internet under

http://www.maxonmotor.com («Downloads» in the category «Service & Support»).

maxon motor

4-Q-DC Servoamplifier ADS_E 50/5 Operating Instructions

2 maxon motor control June 1999edition / subject to change

1 Safety Instructions

Skilled Personnel

Installation and starting of the equipment shall only be performed by experienced,
skilled personnel.

Statutory Regulations

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

Load Disconnected

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

Additional Safety Equipment

An electronic apparatus is not fail-safe in principle. Machines and apparatus must
there-fore 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 be made by authorised personnel only or by the manufacturer. It is
dangerous for the user to open the unit or make repairs to it.

Danger

Do ensure that during the installation of the ADS_E 50/5 no apparatus is connected
to the electrical supply. After switching on, do not touch any live parts.

Max. Supply Voltage

Make sure that the supply voltage is between 12 and 50 VDC. Voltages higher
than 50 VDC or of wrong polarity will destroy the unit.

Motor choke

The built in motor choke allows operation with almost all maxon DC motors with an
output power higher than 10 Watt. For a few exeptions (A-max ∅26, 11W as well
as RE ∅25 and RE ∅26 with terminal inductance lower than 0.35 mH) an extra
inductance (choke) of at least 200 µH is necessary.

Electrostatic Sensitive Device (ESD)

maxon motor

Operating Instructions 4-Q-DC Servoamplifier ADS_E 50/5

June 1999 edition / subject to change maxon motor control 3

2 Performance Data

2.1 Electrical data

Supply voltage Vcc (Ripple < 5%)................................................................12 - 50 VDC

Max. output current I

max

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

Continuous output current I

cont

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

Switching frequency............................................................................................. 50 kHz

Efficiency................................................................................................................. 95 %

Band width current controller ..............................................................................2.5 kHz

Built-in motor choke .....................................................................................160µH/5A

2.2 Inputs

Set value................................................................................-10 ... +10 V (Ri=20kΩ)

Enable................................................................................+4 ... +50 VDC (R

i

=15kΩ)

Input voltage DC tacho.....................................min. 2 VDC, max. 50 VDC (R

i

=14kΩ)

Encoder signals...............................................Encoder A, A\, B, B\, max. 100 kHz, TTL

2.3 Outputs

Current monitor „Monitor I“ , short-circuit protected.........-10 ...+10 VDC (RO=10kΩ)

Speed monitor „Monitor n“ , short-circuit protected.......... -10 ...+10 VDC (R

O

=10kΩ)
Status reading „READY“

Open collector......................................................................max. 30 VDC (I

L

<20mA)

2.4 Voltage outputs

Aux. voltage, short-circuit protected.............................+12 VDC, -12 VDC, max. 12 mA

Encoder supply voltage..................................................................+5 VDC, max. 80 mA

2.5 Trim potentiometers

IxR
Offset
n

max

I

max

gain

2.6 LED indicator

2 colors LED......................................................................................... READY /ERROR

green = READY, red = ERROR

2.7 Ambient temperature- / Humidity range

Operating ................................................................................................... -10 ... +35 °C

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

noncondensating............................................................................................ 20 ... 80 %

2.8 Mechanical data

Weight...............................................................................................................ca. 315 g

Dimensions .................................................................................see dimension drawing

2.9 Terminal

Connector DIN 41612 .............................................................................Version H7/F24

maxon motor

4-Q-DC Servoamplifier ADS_E 50/5 Operating Instructions

4 maxon motor control June 1999 edition / subject to change

3 Minimum External Wiring for Different Modes of Operation

123456 ON

OFF

1 2 3456 ON

OFF

1 2 3456 ON

OFF

1 2 3456 ON

OFF

currentmode

I x R compensation

EMF feedback

sensorselection

encoder frequency

currentlimit mode

currentmode

I x R compensation

EMF feedback

sensorselection

encoderfrequency

currentlimit mode

current mode

I x R compensation

EMF feedback

sensorselection

encoder frequency

current limit mode

currentmode

I x Rcompensation

EMF feedback

sensor selection

encoderfrequency

currentlimit mode

Enable

10 k

Ω

IxR

TachoEncoder

Current

z32

z32

d22

d22

z28

z24

/

d30

z20

/

d26

b16

z10

d10z8d16

d14d8d6

b12

/

b14

b2b8b6z4d4z2d2

z16

z14

Power Gnd

Power Gnd

+Vcc 12-50 VDC

+Vcc 12-50 VDC

Ground Safety Earth

- Motor

+Motor

Gnd

-12V

/

12mA OUT

+12V

/

12mA OUT

Ready

Monitor I

Monitor n

- Tacho Input

+Tacho Input

Gnd

Enable

-Setvalue

+Set value

EncoderB

EncoderB

/

EncoderA

EncoderA/Gnd

+5V

/

80mA

Power Signal Encoder

z24z24z24z24

z20z20z20z20

z14

z16

d2

z2

d4

z4

d8

d6

maxon motor

Operating Instructions 4-Q-DC Servoamplifier ADS_E 50/5

June 1999 edition / subject to change maxon motor control 5

4 Operating Instructions

4.1 Determine power supply requirements

You may make use of any available power supply, as long as it meets the
minimal requirements spelled out below.
During set up and adjustment phases, we recommend separating the motor
mechanically from the machine to prevent damage due to uncontrolled motion.

Power supply requirements

Output voltage Vccmin. 12 VDC; max. 50 VDC
Ripple < 5 %
Output current 5 A continuous (10 A peak)

The required voltage can be calculated as follows:

Known values:

• Operating torque M

B

[mNm]

• Operating speed n

B

[min-1]

• Nominal motor voltage U

N

[Volt]

• Motor no-load speed at U

N,n0

[min-1]

• Speed/torque gradient of the motor ∆n/∆M [min

-1

mNm-1]

Sought values:

• Supply voltage V

cc

[Volt]

Solution:

Choose a power supply capable of supplying this calculated voltage under load.
The formula takes a 2 Volt max. voltage drop at the ADS_E 50/5 into account.

4.2 Function of the potentiometers

Potentiometer Function Turn to the

left right

P1 I x R I x R compensation

weak

compensation

strong

compensation

P2 Offset

Adjustment n=0

at set value 0V

motor turns

CCW

motor turns

CW

P3 n

max

max. speed

at 10V set value

speed

slower

speed

faster

P4 I

max

current limit

lower

min. 0.5 A

higher

max. 10 A

P5 gain amplification lower higher

P6

P7

P8

• For additional possible adjustments refer to chapter 6.

• In use with the original frontplate, the potentiometers are covered !