MICROPHASE Mini Dc User manual

1
Service manual
www.microphase.eu
Mini Dc
Series
Precision Servodrive for DC Motors
Service Manual
MICROPHASE 36051 Creazzo (Vicenza) Italy Phone (+39) 0444 - 14.40.137 e-mail: [email protected]
MICRO
PHASE
Eurocard Servodrive
for Brush motors
Servo Amplifier for Brush DC Motors
Mini Dc

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Service Manual
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Mini Dc
Index
Chapter 1
1.1 Safety and note ......................................................................................................................... 3
1.2 Operation mode and feedback.................................................................................................. 4
1.3 View product.............................................................................................................................. 5
1.4 Model and size .......................................................................................................................... 6
1.5Ambient conditions .................................................................................................................... 7
1.6Ventilation...............................................................................................................................7-8
1.7 Dimensions ............................................................................................................................... 8
Chapter 2
2.1 Input and output signals ............................................................................................................ 9
2.2 Ground GND ........................................................................................................................... 10
2.3 Fault output ............................................................................................................................. 10
2.4 Current request (TPRC) .......................................................................................................... 10
2.5 Current limitation (TPRC) ........................................................................................................ 11
2.6Ausiliary power supply +/-9.8V ................................................................................................ 11
2.7Analog velocity input +/-REF ................................................................................................... 12
2.8 Enable input START................................................................................................................ 12
2.9 Tachogenerator input............................................................................................................... 13
2.10 Current monitor output .......................................................................................................... 13
2.11 Encoder inputs....................................................................................................................... 13
Chapter 3
3.1 Internal adjustements.............................................................................................................. 14
3.2Adjustements with Tachogenerator feedback.......................................................................... 15
3.3Adjustements withArmature feedback ............................................................................... 16-17
3.4Adjustements with Encoder feedback ..................................................................................... 18
3.5 Current adjustments................................................................................................................ 19
3.6 Ramp time adjustments.......................................................................................................... 20
3.7 Potentiometer adjustments..................................................................................................... 21
3.8 Dynamic adjustments.............................................................................................................. 22
3.9 Indicator Leds and protections ................................................................................................ 23

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Mini Dc
Please read these notes carefully before powering up the drive
Simbols security standard
Caution
Warning of dangerous current present
In case of doubt or in any case you don’t know as to behave yourself, before access to the
drive, power off the device and wait until all the leds are turned off.
May you have attention when you touch the drive because it may be hot.
Danger Sign
All the circuits in the Drive are potential sources of severe electrical shock, so follow these
rules to avoiding possible personal injury.
- Power off the drive and wait until all the leds are turned off before touching, removing,
connecting or any other critical action.
- Never disconnect any connectors before powering down the drive
It is very important meet all applicable safety requirements during installation and operating of any
motion control equipment.Any installer has to assume the responsibility to ensure that he recognizes
and complies all the relevant safety standards.Any installation, not meeting the safety requirements,
may damage the equipment or injury the user.
This motion control equipment shoul be handled, installed, setted-up and maintenanced only by
competent personnel expert and trained in the installation of motion control electronic equipment.
Suchtechniciansshould be aware ofpotentialelectrical and mechanical hazards.Shallnever beliable
or have any responsability if the products have been improperly stored, installed, used or maintened,
or if the costumer has permitted any unauthorized modifications, adjustments, and/or repairs to the
products.
Users must keep well clear in mind that this motion control equipment is capable of producing high
forces and rapid movement so they must be used with attention especially during the application
program’s development.
Thismotion control equipments are soldas end-users productsto be installed only bypractical staffin
accordance with all local safety laws and regulations. The device have to be enclosed such that any
part is not be accessible while the system is powered on.
Westrongly reccomend to followtheserecommendationsinordertoavoidwrongusesoftheequipment
that may be impaired all the protections provided by the device.
1.1 Safety and note

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Mini Dc
Description
Operation mode
General characteristic
Closing the velocity feedback loop to motor may be done in several different ways to accommodate
most applications. This types of velocity feedback are available with DC brush motors.
Velocity feedback
• DC motor with tachogenerator
• DC motor with internal PWM (Armature)
• DC motor with encoder
This is a drive capable to drive DC brush motors, up to 9Nm. It's a High Performance full four
quadrant drive servo amplifier. The mosfet output power stage is controlled by a 20 Khz PWM (Pulse
Width Modulation) signal that allows it to drive servo motors where high dynamic performance and
precise speed is required.
1.2 Operation mode and feedback
DESCRIPTION
START INPUT Start input, enable the drive with range from
>9Vdc to +30Vdc (min/max) STANDARD
FAULT OUTPUT Fault drive, open collector output 100mA max.
(Normally closed, opens when in protection
mode) STANDARD
2 ANALOG
OUTPUT
1 motor velocity monitor “V.TACHO”, with
range +/-8 Vdc output
1 current monitor "I.MOTOR", with range +/-8
Vdc output
STANDARD
LED INDICATOR Four LEDs are located just in front of the potentiometers and show the current state of
the drive STANDARD
DESCRIPTION
SPEED CONTROL
INPUT It is speed piloting using an analogue reference (differential or common mode) STANDARD
TORQUE CONTROL
INPUT
It is torque piloting using an analogue
reference. This function allows you to control
the current from the drive. STANDARD

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Mini Dc
1.3 View product
8
DS1 7 6 5 4 3 2 1
6
5
4
3
7
1
2
Mini
(1) Product ID Label
(2) Aluminum heatsink
(3) Leds
(4) CalibrationPotentiometers
(5) Test point (V.tacho, I.Motor, GND)
(6) DIN 64 connector (32a+32c) pitch 2,54
(7) Adjustement zone
(8) Adjustement settings

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Mini Dc
1.4 Model and size
POWER SUPPLY
Model 65 19 - 84 Vdc* 60Vdc **
Model 145 39 - 184 Vdc* 140Vdc **
Model 205 54 - 276 Vdc* 200Vdc **
* Power supply min/max **Typical
CURRENT
Size Rated current (A) Peak current (A)*
3/6 3 6
4/8 4 8
7/14 7 14
10/20 10 20
14/28 14 28
20/40 20 40
*Peak current during 2 sec
Specifications
Model available
Size available
TECNICAL DATA CHARACTERISTICS
Supply voltage output 0,9 Vdc Input
PWM frequency 20Khz
Operating temperature 0/+45°C
Storage temperature -10/+70°C
Drift analog input 0,5uV/°C
Analog inputs (+/-REF) +/-10Vdc max, impedance 20Kohm cad.
Current monitor output (I.MOTOR) +/- 8Vdc = Peak current
Velocity monitor output (V.TACHO) +/- 8Vdc = max velocity
Power supply output (+/-9.8V) +/-9.8Vdc max. 4mA
Encoder max. frequency 300Khz with level >+2,8/24Vdc min/max
Fault drive output NPN 100mA max.
Start input (Enable) >+9V/+30Vdc (min/max)
Band width (current) 2KHz
Band width (velocity) 150Hz
Minimum Inductance motor 200uH
Weight 0,42kg
Contaminants 2°or better (Norms EN60204 e EN50178)
Altitude Up to 1000m without restrictions, from 1000 to 2000m
power derating 1,5%/100m
Flammability rating 94V-0 The heatsink, the PCB and the electronic component
meet 94V-0

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Mini Dc
Mini
Mini
Mini
1.6 Ventilation
1.5 Ambient conditions
N = Standard radiator (operating ambient temperature from 0 to 45°C)
N2 = Standard radiator (operating ambient temperature from 0 to 35°C)
V = Standard radiator + supplementary ventilation (operating ambient temperature from 0 to 45°C)
This servodrive are intended only for use in close locations. Ambient characteristics: operating tem-
perature from 0 to +45°C. Humidity limits between 5% to 95% non condensing (Pollution degree 2 or
better). Supplementary ventilation may be requested in accordance to size. See the table below.
Cable duct
Conductive mounting panel (zinc coated)
SIZE
MODEL 3/6 4/8 7/14 10/20 14/28 20/40
65 N N N N N N2
145 N N N N N2 V
205 N N N N2 V V
Positioning in the electrical box
Follow the instructions in the positioning of the servodrive in the electrical box.
- The drive is natural convection air flow cooled.
- To ensure the drive cooling and make the installation easier for the operator it must be installed
vertically leaving a free space of at least 25 mm on each side of the device. The converter must be
mounted vertically on the electrical box.
- The electrical box must have suitably filtered air vents.
- Leave the necessary space both above and below the converters.
- Keep the drive from excessive mechanical vibration

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Service Manual
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Mini Dc
No
Yes
Mini
Mini
Mini
160
34
100
Mini
Dimensions in mm
Supplementary ventilation
V = Standard radiator+fan
cooling below the converter
(operating temperature 0 to
+45°C)
Mounting position
1.7 Mechanical dimensions

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Mini Dc
Are available rack-mount installation kit and panel-mounting installation kit.
Rack and Panel mounting kit
DIN 32a+32c CONNECTOR
1ac Signal Common Ground. Corrisponds to power supply's negative GND input
2ac (OUT) Fault drive, open collector output max. 100mA
Normally closed, opens when the drive in protection mode
3ac (IN/OUT) TPRC input. Torque request and current limit
4ac (OUT) Power supply -9.8Vdc max 4mA
5ac (OUT) Power supply +9.8Vdc max 4mA
6ac (IN) Reference Positive differential input (Velocity command)
7ac (IN) Positive drive enable with range >+9Vdc min. to +30Vdc max
8ac, 10ac, 12ac (IN) Programmable inputs.
9ac (IN) Tachogenerator input
11ac (OUT) +/-4Vdc=Rated current, +/-
8Vdc=Peak current output in Volts. This
output may be used to monitor the torque the motor is producing.
14ac, 15ac,
16ac, 17ac (IN) Positive power supply +HV voltage
19ac, 20ac,
21ac, 22ac (IN) Negative power supply GND POWER
24ac, 25ac,
26ac, 27ac (OUT) Motor output +M
29ac, 30ac,
31ac, 32ac (OUT) Motor output -M
The following description refers to the 64 pin DIN connector. Wire connections must be made in
the terminal boards of the Panel mount and Rack supports.
2.1 Input and output signals

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Mini Dc
2.4 Current request TPRC (3ac)
MINI DC
CNC
2.3 FAULT output (2ac)
MINI DC
Signal Common Ground.
Corrisponds to power supply’s negative GND power input (19ac, 20ac, 21ac, 22ac)
2.2 Signal common ground GND (1ac)
Input and output signals
Fault drive, open collector output max. 100mA
Normally closed, opens when the drive in protection mode
With a voltage (example from a CNC output) you can command the drive in torque mode.
Applying a signal of +/-10V at TPRC, the Drive to supply positive or negative peak current.
The formula to determine the value of Voltage to apply in TPRC in order to obtain requested current
is the following:
Example: (Drive size 10/20A, request current 8A)
NOTE:
In current reference the loop of internal velocity automatically excludes itself .
V(TPRC) = 10 * Request current / PKcurrent Drive
V(TPRC) = 10 * 8 / 20 = 4V