e-motion SCA-SS-30-06 User manual

Manual SCA-SS-30-06 V 0.9 09/02 page 1
e-motion Gesellschaft für Antriebstechnik mbH, Zettachring 2, D-70567 Stuttgart, Germany
Tel.: [phone], Fax.: [phone] E-mail: [e-mail]
SCA-SS-30-06 (30V, 6A)
The servo amplifier SCA-SS-30-06 is a powerful servo
amplifier for brushed DC motors with an output range up
to 150 Watt.
These operation modes are integrated
•Current control
•I x R control
•DC-Tacho control
•Voltage control
•Optional: encoder feedback
The required operation mode is to be selected with
jumpers, which are accessible externally at any time.
This SCA-SS-30-06 servo amplifier is protected against
over current and overheat. Due to the wide range of
power supply voltage between 11 to 30 V DC the SCA-
SS-30-06 can be used very flexible with different kinds
of power supplies. The robust aluminium case has been
constructed for different methods of mounting it,
therefore a fast and easy integration is provided. Screw
terminals and a durable controller-design allow a fast and straightforward commissioning.
Contents
1. Safety notes...................................................................................................................................... 1
2. Specification..................................................................................................................................... 2
3. Description of inputs and outputs................................................................................................... 3
4. Configuration.................................................................................................................................... 5
5. Operating modes.............................................................................................................................. 6
6. Connection of inputs and outputs................................................................................................... 7
7. Commissioning................................................................................................................................. 8
8. Troubleshooting............................................................................................................................... 9
9. Dimensions....................................................................................................................................... 9
10. Versions of Text................................................................................................................................ 9
1. Safety notes
1.1. Skilled personnel
The installation and commissioning have to be done only by skilled personnel.
1.2. Laws
The user has to ensure the correct installation of the servo amplifier and additional equipment
according to valid laws and rules.
1.3. Remove load
For first commissioning the motor should run with free shaft which means without load.
1.4. Additional safety components
Electronic components are not free of failure or damage. Therefore plants have to be installed with
additional device and installation protecting components. A safe and stable state has to be ensured in
the case of damage of some devices, wrong handling, cable disruption and other cases of any kind of
malfunction.

Manual SCA-SS-30-06 V 0.9 09/02 page 2
e-motion Gesellschaft für Antriebstechnik mbH, Zettachring 2, D-70567 Stuttgart, Germany
Tel.: [phone], Fax.: [phone] E-mail: [e-mail]
1.5. Repairs
Repairs have to be done only by authorized distributors or at the manufacturer. Unauthorized opening
and improper repairs of the device may cause danger to the user and the plant.
1.6. Danger
Care about having no power supply voltage all around the plant during installation of the device!
Never touch any voltage-carrying components!
1.7. Maximum input voltage
The input power supply voltage must not exceed 30 V DC. Voltages exceeding 30 V or reversed
connection will destroy the unit.
1.8. ESD
Do not touch any of the contacts of the device.
1.9. EMC
The SCA-SS-30-06 corresponds to the EC directives,standards and regulations 89/336/EWG article
10 and appendix 1 (EMV) amended by 92/31/EWG and 93/68/EWG and meet the requirements with
standard EN 61800-3 (1996) if the following directions are observed:
•usage of a zinc plated mounting plate, well connected to earth
•mounting of the drive by usage of toothed washers
•usage of shielded cables to and from the unit
•large area contact of the shielding with zinc plated mounting plate.
•motor housing properly connected to earth
Special requirements have to be considered by the user.
2. Specification
Power supply voltage 11 -30 V DC
2.1. Electrical
data Nominal output current 3 A
Set value -10 ... + 10 V
Tacho Max 50 VDC (50kOhm)
2.2. Inputs
Enable 8 -30 V high active
Supervision output Error Open Collector max. 30 V DC
2.3. Outputs Auxiliary voltage output +/-reference +/-3,9 V/max. 20mA
2.4. Display 2-colour LED green: ready/enabled, red: error/disabled
2.5. Weight With terminal connector 330 g
2.6. Dimensions (DxWxH) 100 x 117 x 40 mm
Operation 0 ... + 40 oC
2.7. Temperature-
range Storage -25 ... + 80 oC
2.8. Humidity
range Non condensing 20% -80% rel. hum.

Manual SCA-SS-30-06 V 0.9 09/02 page 3
e-motion Gesellschaft für Antriebstechnik mbH, Zettachring 2, D-70567 Stuttgart, Germany
Tel.: [phone], Fax.: [phone] E-mail: [e-mail]
3. Description of inputs and outputs
In brackets () the number of connector
3.1. Inputs
3.1.1. Set value (7), (8)
The set value input is connected to an differential amplifier.
Input voltage range: -10 V ... + 10 V
Input impedance: 100 kOhm
Definition of polarity: positive set value (+ Set value) > (-Set value)
negative set value (+ Set value) <(-Set value)
Input connection set value:
Soll Gnd
+SetValue
100k
100k
47k
47k
GNDA
3.1.2. Enable (14)
High potential at the input enable will activate speed/torque control and voltage will be applied to the
motor winding. Leaving this input open or pulling it to GND-potential will result in disabling the unit
Input connection Enable:
Enable In 2k2 2k2
4k7
1n

Manual SCA-SS-30-06 V 0.9 09/02 page 4
e-motion Gesellschaft für Antriebstechnik mbH, Zettachring 2, D-70567 Stuttgart, Germany
Tel.: [phone], Fax.: [phone] E-mail: [e-mail]
3.1.3. + Tacho (5)
3.1.4. –Tacho (6)
For operating mode tacho control an analog tacho has to be connected to these inputs.
Input impedance: 50 kOhm
Maximum input voltage: 50 V
Important: at cw turning of motorshaft the potential of the signal + Tacho has to be higher than the
potential of -Tacho to close the control loop.
Input connection tacho:
+Tacho
-Tacho
1k 33k 100k
33k
50k
100k 4k7
GNDA
3.1.5. + Vcc (3)
3.1.6. Power GND (4)
Power supply connector.
Caution: DO NOT connect + Vcc and Power GND to the outputs + Motor or -Motor.
3.2. Outputs
3.2.1. Auxiliary voltage output Enable + V (13)
The auxiliary voltage output Enable + V provides a low-resistant connection to pin + Vcc (3).
+Vcc
Enable +V
1k
3.2.2. supervising report Error Out (11)
The error-signal is to show the status of the drive and can be used to provide a feedback signal to
other devices and controls. The open-collector is normally turned off which means the output is
pulled to a positive level by the means of an external resistor. In the case of a fault the output is
pulled to GND.
Input voltage range: max. 30 V DC
Load current: < 20 mA
Output connection Error:

Manual SCA-SS-30-06 V 0.9 09/02 page 5
e-motion Gesellschaft für Antriebstechnik mbH, Zettachring 2, D-70567 Stuttgart, Germany
Tel.: [phone], Fax.: [phone] E-mail: [e-mail]
3.2.3. Auxiliary voltage outputs + Reference (9), -Reference (10)
The auxiliary voltage outputs + reference and -reference provide a voltage of +/-3,9 V in reference
to analog GND. Analog GND is on half the level of the power supply voltage. Therefore there is no
direct connection to Power GND or GND Signal. These auxiliary voltage outputs are for connection
with an external potentiometer and must not be connected to any other pin or for any other purpose.
Input connection reference voltage generator:
100R
-Ref
+Ref
100R 33k
33k
GNDA
3.2.4. + Motor (1)
3.2.5. -Motor (2)
Outputs for motor connection.
4. Configuration
For correct function please consider the required setting of
•Operation mode
•Input for Set Value
and place the according jumpers at the front side of the drive.
4.1. Selection of Operating modes (Jumper 1 -4)
Operating modes Jumper
I x R J1, J2, J4
Voltage Control J1, J2
Torque Control J3
Tacho J1

Manual SCA-SS-30-06 V 0.9 09/02 page 6
e-motion Gesellschaft für Antriebstechnik mbH, Zettachring 2, D-70567 Stuttgart, Germany
Tel.: [phone], Fax.: [phone] E-mail: [e-mail]
4.2. Selection of Input for Set Value (Jumper 5 –6)
Via Offset Pot J5, J6
Via Ext. Pot J5
Via Set Value --
5. Operating modes
5.1. Minimum wiring
•I x R
•Voltage Control
•Torque Control
5.2. Minimum wiring
•Tacho

Manual SCA-SS-30-06 V 0.9 09/02 page 7
e-motion Gesellschaft für Antriebstechnik mbH, Zettachring 2, D-70567 Stuttgart, Germany
Tel.: [phone], Fax.: [phone] E-mail: [e-mail]
6. Connection of inputs and outputs
6.1. Connection Enable-Input
The enable input can be switched on by the means of an external ground based voltage (high active)
Enable +V 14 13
12Gnd Signal
Enable In
+8V...+30V
or by the means of the auxiliary voltage output enable + V (13) and a potential free switch (no).
Enable +V
14
13
Enable In
6.2. Input for Set Value
The set value for speed (Operating modes I x R, Voltage Control, Tacho) respectively motor current
(Operating mode Control) can be set on three different ways.
6.2.1. Input for set value by the means of external potentiometer
+Reference 10 9
8
7+Set value
-Set value
-Reference
In this case the pin (8) must not be connected.
6.2.2. Input for set value by the means of an analog voltage reference
8
7+Set value
-Set value
-10V...+10V
6.2.3. Input for set value by the means of the integrated potentiometer for offset adjustment
In this case the pins (7) -(10) must not be connected.
6.3. Wiring output error out
Error Out 11
Last
Load
max. 30V

Manual SCA-SS-30-06 V 0.9 09/02 page 8
e-motion Gesellschaft für Antriebstechnik mbH, Zettachring 2, D-70567 Stuttgart, Germany
Tel.: [phone], Fax.: [phone] E-mail: [e-mail]
7. Commissioning
7.1. Selection of power supply
Any power supply can be used as long the minimal requirements listed below are fulfilled. We
recommend to remove the motor from the mechanical construction to avoid damage and danger by
uncontrolled movements.
Requirements to the power supply:
Output voltage: min. 11 V DC max. 30 V DC
Residual voltage: < 5 %
Output current: 6A nominal.
7.2. Function of the potentiometers
Potentiometer Function Turning ccw Turning cw
Gain Gain adjustment Decreasing Increasing
N max Maximum speed at set value of
10 V Decreasing speed Increasing speed
I max Current limitation Decreasing min. 0 A Increasing max. 6A
I x R I x R compensation low compensation High compensation
Offset adjustment n=0 at set value= 0 Motor turns cw Motor turns ccw
7.3. Presetting of potentiometers
Original delivered servo amplifiers are adjusted to uncritical values and for easy adjustment by the
user.
7.4. Adjustment 1.
Adjust max. set value (e.g. 10 V) and turn potentiometer n max cw til the
required speed is reached
2. Adjust potentiometer Imax to required value of current limitation.
Important: Refer to motor manufacturers data sheet
3. Turn potentiometer Gain slowly cw until the required gain is reached
Important: If the motor turns rough, is vibrating or makes noise turn
potentiometer ccw again, until the instability of the system is obsolete.
4. Adjust set value = 0 V and adjust potentiometer Offset until the motor stops
to speed 0.
I x R-control
DC-Tacho control
Digital-Encoder control
5. Additionally only at I x R compensation:
increase slowly Poti I x R, until the value of the feedback is high enough to
control the drive to get best results concerning motor speed at different
loads
Torque control
1. Adjust potentiometer Imax to required value of current limitation.
Important:: Refer to motor manufacturers data sheet
7.5. Commissioning
Select the required operating mode by setting the according jumpers on the left side of the unit. Refer
to the printing on the front plate. Required selection of:
•operating mode
•Input for set value
Connect motor, control inputs e.g. set value, enable and if necessary an additional encoder or tacho
to the drive.
Connect power supply.
Enabling and adjustment referring to manual.

Manual SCA-SS-30-06 V 0.9 09/02 page 9
e-motion Gesellschaft für Antriebstechnik mbH, Zettachring 2, D-70567 Stuttgart, Germany
Tel.: [phone], Fax.: [phone] E-mail: [e-mail]
8. Troubleshooting
Symptom Operating mode Causes Repair
Power supply voltage < 11 V Check power supply
Enable not active Check level at pin 14
Set value 0 V Check set value
Current limitation adjusted too low Check potentiometer adjustment
Imax
Speed range too low Check potentiometer adjustment
nmax
Wrong operation mode Check jumper setting
Bad connections Check connectors
Motor
does not
turn
All
Wrong wiring Check wiring
Encoder mode Encoder signals Check signals and sequence
Tacho mode Tacho signals Check voltage and polarity
No speed
control I x R Feedback too low Check adjustment of
potentiometer Gain and I x R
9. Dimensions
4 x 4,5
80
100
12
104
117
1,5
3,0
100
94
90
82
37
40
1
14
10.Versions of Text
V 0.9(09/02) preliminary issue with revision of set value with ext. pot