phytron MSX MINI User manual

Extreme. Precision. Positioning.
MANUAL 2107-A005 EN
Ministep Power Stage for Bipolare Control Mode
MSX MINI

phytron
03/2018 Manual MA 2107-A005 EN
MSX 152-120 MINI
Stepper Motor Power Stages
for Bipolar Control Mode

Manual MSX MINI
MA 2107-A005 EN 2
2018
All rights with:
Phytron GmbH
Industriestraße 12
82194 Gröbenzell, Germany
Tel.: [phone]
Fax: [phone]
Every possible care has been taken to ensure the accuracy of this technical manual. All
information contained in this manual is correct to the best of our knowledge and belief but
cannot be guaranteed. Furthermore we reserve the right to make improvements and
enhancements to the manual and / or the devices described herein without prior
notification.
We appreciate suggestions and criticisms for further improvement. Please send your
comments to the following e-mail address: dok[email protected]e
You’ll find the updated version of this manual on the website of www.phytron.de.

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Contents
1MSX MINI ................................................... 4
1.1 Short Overview..................................... 4
1.2 Extent of Supply ................................... 7
1.3 Pin assignment..................................... 8
1.4 Rotary Switches ................................... 9
1.5 DIP Switches ........................................ 9
1.6 LEDs.................................................... 10
1.7 Block Diagram ..................................... 11
2Technical Data Table ................................ 12
3To Consider Before Installation ................. 15
3.1 Qualified Personnel ............................. 15
3.2 Safety Instructions............................... 15
3.3 Protective Measure for Power Stage
Operation ................................................... 16
3.4 Putting into Service ............................. 17
4Dimensions................................................ 18
5Mains Supply Unit ..................................... 19
5.1 Calculation and Connection ................ 21
5.2 Insulation Overview ............................. 22
6Motor Connection ...................................... 23
6.1 Shielding.............................................. 24
6.2 Wiring Schemes .................................. 25
6.3 Motor Cable......................................... 26
7Rotary Switches and DIP Switches ........... 27
7.1 Motor Current Rotary Switches ........... 28
7.2 Step Resolution and Current Shape
Rotary Switch ............................................. 29
7.3 DIP Switches ....................................... 29
8Inputs ........................................................ 30
8.1 MSX 5 V Standard and MSX 5 V RESET
Inputs 30
8.2 MSX 24 V Input ................................... 30
8.3 pulseControl Input ........................ 31
8.4 Motor Direction Input........................... 31
8.5
Boost
Input ....................................... 32
8.6
Activation
Input ............................... 32
8.7
Reset
Input........................................ 32
9Outputs...................................................... 34
9.1 positionBasic Output ..................... 34
9.2 Error Output......................................... 35
Appendix A: Technical Details ....................... 36
A1 FULL STEP / HALF STEP / MINISTEP 36
A2 Boost .................................................... 39
A3 Overdrive .............................................. 40
A4 Current Shaping CS ............................. 43
A5 Optimization of the Current Shape -
BLOW UP .................................................. 44
A6 Current Delay Time .............................. 45
Appendix B: G-MSX Adaptor Board............... 46
Appendix C .................................................... 48
C1 Warranty............................................... 48
C2 ESD Protective Measures .................... 48
Appendix D: Declarations of Conformity ........ 49
Index 51

Manual MSX MINI
MA 2107-A005 EN 4
1 MSX MINI
In this chapter you’ll find a brief description of the MSX power stage.
1.1 Short Overview
•Motor currents from
4.4 to 15.4 APeak
•Supply voltage from 60 to 120 VDC
•Step resolution from full step to
1/20 step
•Overdrive mode
•Easy current and step resolution
setting by rotary switches
•Short-circuit proof over and between
the phases and towards ground
•32-pin connector
acc. to DIN 41612, version D
Fig. 1: Front view of MSXMINI with panel
Ministep power stages for two-phase stepper motors
The power stages type MSX are used for bipolar control of two-phase stepper motors with
phytron’s welltried technology, now with enhanced 4 quadrant chopper type current
control.
Run and stop current can be set by rotary switches. Overdrive, Boost, Activation and
Motor direction are activated by DIP switches.
Step resolution and phase current shape can be set by a rotary switch, too:
1/1, 1/2, 1/4, 1/5, 1/10 and 1/20 of a full step.

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Fig. 2: Front view without panel
Motor currents from 4.4 to 15.4 APeak
Run and stop current can be individually set by rotary switches. The MSX automatically
changes to the stop current, if there aren’t any control pulse signals. The Boost current
(130 % of the preset run current) can either be activated by the input
Boost
or is
permanently switched on by DIP switch. The Overdrive is also activated by DIP switch.
DC Supply voltage
A DC voltage from 60 to 120 VDC can be connected to the supply voltage pins.
Admissible range: 40 to 160 VDC

Manual MSX MINI
MA 2107-A005 EN 6
Inputs
The inputs of the power stages MSX can be controlled with 5 V or 24 V input level via
optocouplers.
The inputs
pulseControl
, Motor direction,
Boost
and
Activation
are designed for Open-
Collector controlling. The inputs are optically insulated from the MSX power supply
voltage.
Reset
can be added by plugging the J1 jumper on the board.
Outputs
Both MSX outputs positionBasic and Error are optically insulated from the motor voltage,
type open-collector Darlington.
Easy to mount and EMC compliant
The power stage MSX is designed for mounting in 19"/3U racks.
All wiring is connected to one 32-pin connector according to DIN 41612, version D.

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1.2 Extent of Supply
The MSX is available in the following options:
Type MSX 120V Version ID-No.
MSX 152 (5 V) Standard,
replacement for MSO and
MSO MINI
#10004904
MSX 152 (24 V) Replacement for SMD #10008753
MSX 152 (5 V-RESET) Additional Reset input (Jumper
plugged)
#10008756
Supplementary parts are available:
•Front panel (14 HP) with handle #10008562
•32-pin connector #02000895
•G-MSX V1.1 adaptor board for easy connecting the MSX with connectors for motor
cable, signal leads and supply voltage #10008712
•Damping SB 234 module for 90 V #02000748
•Damping SB 234 module for 120 V #02002165
Difference between MSX and MSO MINI
MSX MSO MINI
Run and stop current
setting
16-step rotary switches 0...F 4-pin DIP switches
(16 combinations)
Reset input Added input Reset by jumper –
Pins 10ac of the 32-pin
male multipoint
connector
5 V or 24 V (see fig. 3) +5 VDC

Manual MSX MINI
MA 2107-A005 EN 8
1.3 Pin assignment
Fig. 3: 32-pin male multipoint connector acc. to DIN 41612, version D
Important:
The output currents must not exceed 10 Ar.m.s during continuous operation to avoid
overheating of the connector. Therefore, the BOOST function for phase current increase
by 30% must not permanently used in MSX 152 with maximum current. Otherwise an
additional ventilation of the connector is necessary.

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1.4 Rotary Switches
Run and stop current, step resolution and current shaping can be set by the three setting
switches behind the front panel.
Fig. 4: 16-stepped rotary switch: setting 0...F
1.5 DIP Switches
Overdrive, Boost, Activation and Motor direction can be set by the four DIP switches
behind the front panel.
Top view
Side view
Fig. 5: Two types of DIP switches with switch position ON

Manual MSX MINI
MA 2107-A005 EN 10
1.6 LEDs
LED shines Meaning
Basic position
(Zero Signal)
green The signal Basic position is generated.
Every 8 pulses in the half step mode etc.
Overload red Overload error in the MSX: A short-circuit
over or between the motor phases or
towards GND or +UB has occured.
Supply Failure red Supply voltage < 40 V or > 160 V
•The supply voltage at the internal load
capacitor has dropped under 40 V.
•An electronic c
urrent limitation or a not
adequate smoothing of the DC voltage
can be the reason for a short time
break of the supply voltage
•The rotatory energy is supplied back
as electric energy to the power stage.
Overvoltage in the internal load
capacitor will be the result. The error
message ‘overload’ can be caused by
operation with maximum power supply
(120 V), by motor mass ineratia
(> 1.3 x 10-4 kgm2) and high speed
( > 20 rev/s).
> 85 °C red The temperature at the heat sink of the
transistors is too high (> 85° C). The
power stage is powered off.

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1.7 Block Diagram
Fig. 6: MSX block diagram

Manual MSX MINI
MA 2107-A005 EN 12
2 Technical Data Table
Technical Data
Stepper motor Two-phase stepper motors with 4, 6 or 8-lead wiring scheme
Winding resistance < 10 Ohm
Winding inductance should be higher than 0.5 mH per phase
Step resolution and
Current shape
Step resolution and Current shape are set by rotary switch:
Step resolution:
1/1, 1/2, 1/4, 1/5, 1/10, 1/20 of a full step with or without torque
compensation (DMA), current shaping (CS), BLOW UP
Factory settings:
Rotary switch ‚6‘: Half step with DMA without CS
Phase currents Run and stop current can individually be set by rotary switches.
Factory settings:
Rotary switch run current: ‚F‘
Rotary switch stop current: ‚3‘
without Boost 2.4 to 8.4 Ar.m.s.
with Boost 3.1 to 10.9 Ar.m.s.
Imax 15.4 APeak
Supply voltage +UBnominal: +60 to 120 VDC
Admissible range: 40 to 160 VDC
Reinforced or double insulation between mains and secondary
circuit.
Supply voltage
optocoupler +5/24V_Opto towards 0V_Opto: 5 or 24 V
ISupply DC The power requirement extensively depends on the motor
current and the motor. The value is limited to: 10 A

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Technical Data
Inputs All inputs include an optocoupler with series resistors for
5 V or 24 V-supply voltage.
The signals are active, when the optocoupler is energized.
Optocoupler input current is about
10 mA for MSX 5 V standard version or
5 mA for MSX 24 V version
pulseControl Maximum step frequency: 500 kHz
Minimum pulse width: 1 µs
The step is executed with the falling flank of the control pulse.
Motor direction When the optocoupler is energized, the motor rotates in the
reverse direction (as compared to the preferential motor
direction selected).
Boost
When the optocoupler is energized, the MSX increases the run
and stop current by 30%.The Boost function can permanently
be activated by the DIP switch.
Activation
When the optocoupler is energized, the motor current is
activated.
Reset
Is available only, when J1 jumper is plugged in position RESET
on the board. The power stage is set to an initial state. A signal
Basic position is generated for each Reset.
Outputs Optically insulated from the motor voltage, Type Open-
Collector Imax = 20 mA, Umax = 45 V, UCE sat at 20 mA < 0.6 V
positionBasic
Zero crossing of the internal ring counter is signalized; active
LOW (see chap. 9.1)
Full step
Half step
1/4 step
1/5 step
1/10 step
1/20 step
Basic position signal after
every 4th control pulse
every 8th control pulse
every 16th control pulse
every 20th control pulse
every 40th control pulse
every 80th control pulse

Manual MSX MINI
MA 2107-A005 EN 14
Technical Data
Error Supply voltage < 40 VDC or > 160 VDC
Overtemperature (T > 85° C)
Overcurrent, short circuit
The power stage is deactivated in case of an error message.
Cooling Fan with 50 m3/h air flow
Ambient
temperatures
Operation: 4 to +40 °C *)
Storage: –25 to +55 °C
Transport: –25 to +85 °C
*) We recommend an additional cooling in case of higher
operation temperatures.
Environmental
requirements
The MSX has been designed for degree of pollution 2 acc. to
EN 50178.
Admissible heat sink
temperature
max. 85 °C
The power stage is deactivated if the admissible heat sink
temperature is exceeded. The LED shines red.
Maximum motor lead
length
max. 50 m
Lead cross section of
the motor cable
Dependent on the motor current and the motor lead length:
0.1 mm2per 1 Ampere motor current
Connector 32-pin connector acc. to DIN 41 612, version D
Weight with front panel about 970 g

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3 To Consider Before Installation
Read this manual very carefully before installing and operating the MSX.
Observe the safety instructions in the following chapter!
3.1 Qualified Personnel
Design, installation and operation of systems using the MSX may only be
performed by qualified and trained personnel.
These persons should be able to recognize and handle risks emerging from
electrical, mechanical or electronical system parts.
WARNING !
By persons without the proper training and qualification damages to devices and
persons might result!
3.2 Safety Instructions
1. The MSX must only be operated if MSX housing and motor housing are
connected to protective earth.
2. The transformer must be constructed with reinforced or double insulation to
avoid dangerous touch voltages (50 VAC and 120 VDC) in case of an error.
3. If you need to remove the front panel or to open the device:
Up to 3 minutes after turning off the supply voltage, dangerous voltages
may still exist within the device.
4. As long as the MSX is connected to supply voltage, a hazardous voltage level
is present at the concerned pins, even if the motor is not wired.
5. Always switch off the supply voltage if you connect or disconnect any wires or
connectors at the MSX.
Most important:
Do not unplug the MSX while powered. Danger of electric arcing.
6. Clearing the inputs
Activation
or
Reset
is no safe separation in the
emergency case.
The voltage supply has to be interrupted for switching off the drive safely.
7. The surface of the MSX may reach temperatures of more than 85 °C during
operation. Danger of injury if touching the surface!

Manual MSX MINI
MA 2107-A005 EN 16
3.3 Protective Measure for Power Stage Operation
The MSX must be operated according to VDE 0100 part 200 with protection by automatic
disconnection. Therefore, the motor, power stage, `0 V` and each equipment has to be
grounded.
When protection by automatic disconnection (EN 61140, VDE 0100,
part 410) is used for power stages with definite voltage
> 50 VAC or +UB> 70 VDC, it is necessary:
Only use motors, which are checked according to EN 60034-1
(500 VAC + twice determined voltage).
The motors must have a protective conductor clamp (EN 60034).

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3.4 Putting into Service
•Check the output voltage of the supply unit before plugging in the MSX unit.
•Never plug or unplug the unit when powered.
•Excessive heating of the motor is probably caused by setting too high motor current.
High motor temperature could also be caused by permanent activation of the Boost
function.
•If the motor stops during acceleration, reduce the acceleration and/or the maximum
frequency at the control pulse input. Motor stop may also occur if the nominal motor
current is set incorrectly.
•In case of strong motor resonance, various measures can be taken:
– Select a higher step resolution
– Change the run frequency
– Change the acceleration frequency
– Reduce the motor current
Resonance effects occur more often in the full step mode.
•If the positioning of the motor is incorrect, this may be caused by perturbations on the
pulse input, or by excessive acceleration or motor run frequencies. If the deceleration
is too high, the motor risks mispositioning by multiples of 4 steps (desynchronisation).
•If the supply unit is equipped with a regulation transformer, the voltage of which
increases slowly, a ‘supply voltage’ error can appear. The same error may appear
when using a regulated supply unit with current limitation.
•If several red LEDs shine red after power on or if the green LED ‚Basic position‘ does
not shine, the unit is probably out of order.
•Make always sure before disconnecting that all LEDs don‘t shine. The LED
‚Supply failure‘ must shine for a short time after power-down.

Manual MSX MINI
MA 2107-A005 EN 18
4 Dimensions
Fig. 7: Dimensions

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5 Mains Supply Unit
The MSX power stage can be supplied by means of an unregulated filtered DC voltage
from 60 to 120 VDC.
Admissible voltage range: 40 to 160 VDC
The voltage must not drop under 40 V or rise over 160 V, not even for a short time
(> 1 msec). If the limits are exceeded the error output opens. The drive is deactivated at
the same time.
Fig. 8: Mains supply unit
A line filter is recommended with the following insert loss at 50Ωin the range of
0.15...30 MHz:
f/MHz 0.15 0.5 1 2 5 10 20 30
a/dB (line-to-ground)
(asymmetr. signals) 36 47 42 42 40 42 42 45
a/dB (line-to-line)
(symmetr. signals) 52 70 70 70 65 55 50 60
e. g. CORCOM 10ET1