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phytron MCD+ Manual

Compact stepper motor power stage for wall mounting
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MCD
Compact Stepper Motor
Power Stage for Wall Mounting
Manual 2102-A005 GB

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  • Page 1 Compact Stepper Motor Power Stage for Wall Mounting Manual 2102-A005 GB...
  • Page 3 93–70 Compact Stepper Motor Power Stage for Wall Mounting 03/2008 Manual MA 2102-A005 GB...
  • Page 4 / 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: doku@phytron.de You´ll find the updated version of this manual on the website of www.phytron.de MA 2102-A005 GB...

  • Page 5: Table Of Contents

    Contents 7.1.6 Activation Input ......29  1  MCD ............4  7.1.7 Reset Input ........30  1.1  Short Overview ........4  7.2  Error Output......... 30  1.2  Extent of Supply ........6  8  Rotary Switches ........32  1.3  Signal Connector X3 ......7 ...

  • Page 6: 1  Mcd

    Ministep Compact Power Stage for 2-Phase Stepper Motors The power stages type MCD are used for bipolar control of two-phase stepper motors with phytron’s welltried technology, now with enhanced 4 quadrant chopper type current control. The operating parameters – run and stop current, step resolution, current delay time and preferential motor direction –...
  • Page 7 With overdrive function, a dynamic boost function, the MCD offers a motor independent compensation of the torque decrease for higher frequencies. In ServiceBus mode the current shaping function (CS) can be activated for phase current adaptation. Motor currents from 0.3 to 9 A...

  • Page 8: Extent Of Supply

    #10008200 • MCD Power stage for wall mounting with mating connectors X1 to X3 #10006576 • MCD Power stage with the phytron USB Converter (a cable 20 cm included) for wall mounting with mating connectors #10006861 • MCD Power stage with the phytron USB Converter (a cable 20 cm included) for rail...

  • Page 9: Signal Connector X3

    • Mating connector set X1 to X3 #10007287: Connector Number of poles Mating connector Phoenix Identity number MSTB2,5/2-STF-5,08 #02005267 IC 2,5/4-ST-5,08 #10005390 MC 1,5/17-ST-3,5 #10006319 1.3 Signal Connector X3 The power stage is adapted for 5 V or 24 V input voltage. There are different pin assignments for both input voltages.

  • Page 10: Servicebus Connectors X4 And X5

    Operating mode: ServiceBus mode ® All settings are made on PC by ServiceBus–Comm phytron software. If the rotary switches S2, S3 and S4 are set to ‚0’, the MCD is in ServiceBus Mode. The rotary switch S1 addresses the device...

  • Page 11: Rotary Switch Mode

    Remark: If only one setting switch (S2, S3 or S4) is set to ‘0’ in the ServiceBus mode, the MCD will be deactivated. Operating mode: Bus mode exclusive This operating mode is a special ServiceBus mode with safety locking. In Bus mode exclusive all settings at the rotary switches are ignored.

  • Page 12: Servicebus Mode

    Manual MCD In the Rotary switch mode, you can be change between 2 ranges (I or II) by the rotary switch ‘Current range setting’: Fig. 7: Range I: Fig. 8: Range II: max. 1.6 A in 0.1 A steps max. 5 A in 0.3 A steps r.m.s.

  • Page 13: Bus Mode Exclusive

    The ServiceBus mode allows configuration and programming via PC by software ® ® ServiceBus-Comm for Windows The step resolution can be programmed up to 1/512 step, the current delay time and the phase current in 100 mA steps. The operating parameters are unconditionally set, i.e. the preset values are accepted without Reset.

  • Page 14: 2  Technical Data Table

    Manual MCD 2 Technical Data Table Technical Data Stepper motor 2-phase-stepper motors with 4, 6 or 8 lead wiring scheme Winding resistance between 0.1 and 10 Ohm Winding inductance 0.5 to 10 mH per phase Step resolution The step resolution can be set by the rotary switch: Rotary switch mode 1/1, 1/2, 1/4, 1/5, 1/8, 1/10, 1/20 of a full step.
  • Page 15 Technical Data Error message Supply voltage < 20 V or > 85 V Overtemperature (T > 85° C) Overcurrent, short circuit The power stage is powered off in case of an error message. Mounting The MCD housing is constructed with wall mounting brackets at two side panels.
  • Page 16 A line filter with 20 dB damping is necessary in the range from 0.15 to 1 MHz (f.ex. Corcom 5VR1). Remark: If PS 5, phytron’s power supply unit, is used, any line filter isn’t required. EN 61000-6-4 Emission standard for industrial...

  • Page 17: 3  To Consider Before Installation

    3 To Consider Before Installation Read this manual very carefully before installing and operating the MCD. Observe the safety instructions in the following chapter! 3.1 Qualified Personnel Design, installation and operation of systems using the MCD may only be performed by qualified and trained personnel.

  • Page 18: Protective Measure Options For The Operation Of Power Stages

    Manual MCD 7. The maximum voltage of the signal inputs and outputs must not exceed 5 V and 24 V (I/O connector X3). Please note that there are different pins for 5 V or 24 V inputs! Do not connect a 5 V input to 24 V voltage! Danger of damages! 8.

  • Page 19: Putting Into Service

    If there is no PE clamp on the motor, the 0 V wire must be grounded to complete the protective measure PELV (Fig. 13 and Fig.14): Fig. 13: PELV – Grounding: 0 V and Power Stage Fig. 14: PELV – Grounding: 0 V...

  • Page 20: For Servicebus Mode

    • Using the USB-RS485-Converter: Connect an USB-port of the PC to the USB input (IN) of the USB-RS485-converter by an USB-cable, type A-B. Install the required USB drivers, see phytron CD. After a successful installation connect the USB-RS485-converter (OUT) to the MCD (connector X4) (A-A connection of the 4-pole connector).

  • Page 21: 4  Dimensions And Mounting

    4 Dimensions and Mounting Fig. 15: Dimensions in mm (inch) Mounting instruction The MCD should be built-in vertically to improve convection. Minimum free space to other devices: 30 mm Minimum free space below and above the device: 100 mm...

  • Page 22: 5  Mains Supply Unit

    Manual MCD 5 Mains Supply Unit The MCD power stage can be supplied by means of an unregulated filtered DC voltage from 24 to 70 V Admissible voltage range: 24 to 70 V Nominal voltage: 70 V The voltage must not drop under 20 V and rise over 85 V, not even for a short time (>...

  • Page 23: Insulation Overview

    Fig. 17: 2-pole Phoenix connector MSTB 2,5/2-GF-5,08 X1 Attention: Do not interchange the connections! The MCD is not protected against reverse polarity. 5.1 Insulation Overview Fig. 18: Insulation MCD The power stage must be operated with protective measure PELV.

  • Page 24: 6  Motor Connection

    Manual MCD 6 Motor Connection The following chapter describes how to wire different types of 2-phase stepper motors. MCD stepper motor power stages may be connected to stepper motors with 0.3 to 9 A Peak phase current. The stepper motor winding resistance should be more than 0.1 Ω and less than 10 Ω...

  • Page 25: Motor Connector

    6.1 Motor Connector The figure shows the connection of a phytron 2-phase 4-lead stepper motor connected parallel. Fig. 19: Motor connector X2 Attention: Do not unplug the motor connector while powered. Danger of electric arcing. 6.2 Shielding To avoid disturbances affecting the wires and instruments installed close to the drive system, we recommend to use shielded cables.

  • Page 26: Wiring Schemes

    Manual MCD 6.3 Wiring Schemes Fig. 21: Connection diagrams for 4-, 6- and 8-wire stepper motors MA 2102-A005 GB...

  • Page 27: Motor Cables

    6.4 Motor Cables We recommend to wire the stepper motor with a 5-lead cable with shielding mesh. For optimum electromagnetic compatibility (EMC), the cable should not be interrupted by additional connectors or screw terminals. We recommend to use a short motor cable because of EMC.

  • Page 28: 7  Inputs And Error Output

    Manual MCD Inputs and Error Output The I/O connector X3 is used to connect the signal inputs and outputs. Attention: Please check the input level applied to the MCD: 5 V or 24 V! Do not connect a 5 V input to 24 V voltage! Danger of damages! Important: In ServiceBus mode the logic input signals Control pulses, Motor direction, Boost and Activation can be reversed (HIGH active or LOW active).

  • Page 29: Push-Pull- Or Oc-Controlling

    7.1.1 Push-Pull- or OC-Controlling We recommend to control the MCD inputs by push-pull drivers. This confers optimum suppression of disturbances. Fig. 23: Push-pull controlling Alternatively a controlling via open-collector is possible. Fig. 24: Open Collector Controlling 7.1.2 Logic Level 24 V or 5 V MCD power stages can be driven by input level 5 V or 24 V.

  • Page 30: Control Pulse Input

    Manual MCD Fig. 25: Input level 5 V or 24 V connection 7.1.3 Control Pulse Input Maximum step frequency: 500 kHz Minimum pulse width: 1 µs The step is done with the rising flank of the control pulse. The control pulse sequency must not suddenly start or stop, if the control pulse frequency is higher than the start/stop frequency* of the motor.

  • Page 31: Direction Input

    7.1.4 Direction Input This signal sets the direction of rotation of the motor. If the input optocoupler is not energized, the motor drives in the preferential direction. If the input optocoupler is powered, the selected motor direction of rotation is reversed.

  • Page 32: Reset Input

    Manual MCD 7.1.7 Reset Input If the input optocoupler is energized, all error signals and the ring counter are reset. Then, the ring counter is in basic position. Both motor phases are energized by the same current value in basic position independent of the step resolution. Fig.
  • Page 33 Error Messages: Undervoltage/Overvoltage The red LED blinks by second cycle in case of undervoltage/overvoltage. Reasons: • The supply voltage at the internal load capacitor has dropped under 20 V. • An electronic current limitation or a not adequate smoothing of the DC voltage can be the reason for a short time break of the supply voltage.

  • Page 34: 8  Rotary Switches

    Full Step – Half Step – – – – 1/10 – 1/20 – Factory settings Important: The current values of this table have been verified with the phytron stepper motor ZSH 87.2/200.6.5. Deviation is possible for other motors. MA 2102-A005 GB...
  • Page 35 Set up phase currents correctly fitting to the motor winding's design current! • The stop current is normally set to 40-50% of the run current, to keep the motor temperature as low as possible. • The table values refer to current values, if both motor phases are activated. The current in one phase is calculated as: table value x •...

  • Page 36: Servicebus Mode

    Manual MCD 8.2 ServiceBus Mode If more than one MCD is operated (max.16), the RS485 field bus is best choice (4 wire operation). The ServiceBus Mode setting: The ServiceBus Mode is activated by the rotary switches S1 to S4 on the MCD. The rotary switches S2, S3 and S4 must be set all to ‘0’.

  • Page 37: Usb-Rs485-Converter

    8.2.1 USB-RS485-Converter The phytron USB-RS485-converter is screwed on the side of the MCD. The first of several MCD axes is addressed by 0, to which the USB-RS485-converter is screwed. All other power stages are addressed continuously (fig. 30). Fig. 30:...

  • Page 38: Usb-Driver Installation

    Important: Administrator authorizations are required for the driver installation. • Power on your PC. When the desktop is ready, insert the phytron CD and open the folder USB Treiber by the Windows Explorer. Select the .exe program which goes with your system software and start it by double click.

  • Page 39: 9  Bus Connection Configuration

    9 Bus Connection Configuration If operating more than one MCD device (max. 16) at one serial interface, the RS485 field bus is the best choice. Many parameters in the MCD can be set by the serial bus connection. Thus, a safe stepper motor operation with correct preset parameters is assured.

  • Page 40: Operating Parameters

    Manual MCD The checksum is defined by summing up all bytes, beginning with the address byte and including the separator (:) in an exclusive-OR-operation (⊕): CS = address_H address_L ⊕ data byte 1 ⊕ data byte 2 . . . ⊕ data byte n ⊕...
  • Page 41 The following table gives an overview: Additional Function Example Description Answer input to the instruction code Information about the Information about f‚R/– MCD instruction the instruction F status’ Upper limit of the Stop current: number range highest value Lower limit of the...
  • Page 42 Manual MCD Instruction Parameter Type Value Description code name fault values Boost R/W 0 to 63 Boost current from 0.1 to 6.3 A r.m.s. Software <String> Read power stage software version – version Reset – Power stage reset – Delete –...
  • Page 43 Instruction Parameter Type Value Description code name fault values Step width R/W 0 to 12 0= 1/1 7=1/20 1= 1/2 8=1/32 2= 1/4 9=1/64 3= 1/5 10=1/128 4= 1/8 11=1/256 5=1/10 12=1/512 step 6=1/16 Output logic R/W 0 or 1...

  • Page 44: Extra Parameters

    Manual MCD Instruction Parameter Type Value Description code name fault values Write – Write parameter into EPROM – EPROM Motor test + or – Self test: one motor rotation with – preset run current 9.2.1 Extra Parameters Instruction Parameter Type Value Description code name...

  • Page 45: Examples

    9.2.2 Examples Instruction code Action Answer Read Boost current e. g. a50 (= 5.0 A r.m.s. Set Boost current to 4.0 A r.m.s. Read power stage software version b<String> (e. g. bMCDV1.0) Reset power stage Delete EPROM Read MCD status in decimal mode e.
  • Page 46 Manual MCD Instruction code Action Answer Read function Overdrive po0 or po1 PO0 or PO1 Set function Overdrive po0 or po1 Read bus mode eXclusive px0 or px1 PX0 or PX1 Set bus mode eXclusive px0 or px1 Error inquiry q0...q3 Read run current e.

  • Page 47: Appendix A: Technical Details

    Appendix A: Technical Details A stepper motor can be used with different step resolutions, which are described in the first part of this chapter. The functions Boost, Overdrive, Current delay time and the Current Shaping you’ll find in the second part.
  • Page 48 Manual MCD The moment in the full step mode, M as compared to the moment in the half-step mode, is: ⏐M ⏐ = ⏐M ⏐ × This means, when a single phase is energized, the current must be increased by a factor to obtain an identical torque.

  • Page 49: A2 Boost

    A2 Boost The motor torque required during acceleration and deceleration is higher than that required during continuous motor operation (f ). For fast acceleration and deceleration settings, (steep ramps), the motor current is too high during continuous operation and results in motor overheating.

  • Page 50: A3 Overdrive Function

    Manual MCD A3 Overdrive Function The MCD power stages can compensate the phase current decrease in the upper speed range by the Overdrive function. Overdrive is independent of the motor type. Overdrive is a dynamic boost function, which will be automatically switched on if this makes sense in regard of the current shape: Fig.
  • Page 51 Step resolution Input control pulse frequency PH ServiceBus parameter Default Overdrive on at > Overdrive off at < 1/1 = VS 1 kHz 0.9 kHz 1 kHz 1/2 = HS 2 kHz 1.8 kHz 1 kHz 4 kHz 3.6 kHz...

  • Page 52: A4 Current Delay Time

    Manual MCD A4 Current Delay Time After the last control pulse the stop current is activated after a waiting time. The waiting time after the last control pulse until the changing to the stop current is called current delay time. We recommend to specify t so that the motor’s oscillations are dying out after the last Delay...

  • Page 53: A5 Current Shaping Cs

    A5 Current Shaping CS Current Shaping (CS) is a circuitry method for delivering a true phase current which corresponds for a wide range of frequencies to a selected current shape. If the stepper motor is driven without CS, the true current differs from the specified current, even in the lower speed frequencies.

  • Page 54: B1 Warranty

    In this chapter warranty, trade marks and ESD protective measures are described. B1 Warranty The MCD power stages are subject to legal warranty. phytron will repair or exchange devices which show a failure due to defects in material or caused by the production process.

  • Page 55: Appendix C: Declarations Of Conformity

    Appendix C: Declarations of Conformity MA 2102-A005 GB...
  • Page 56 Manual MCD MA 2102-A005 GB...

  • Page 57: Index

    Index Insulation 16, 21 A  L  Activation 14, 29 Address 37 Lead cross section 12, 25 Ambient standards 14 LED 11, 31 Ambient temperatures 14 Line filter 14 B  M  Basic position 30 Mating connector 6 Boost 14, 29, 47...
  • Page 58 Manual MCD S  Touch voltage 17 Trade marks 52 Safety instructions 15 Scale 39 U  ServiceBus 37 Untervoltage 13 ServiceBus connector 8, 13 USB cable 6 ServiceBus mode 8, 10, 34 USB driver 35, 36 ServiceBus Mode 18 USB port 36 ®...
  • Page 60 Phytron-Elektronik GmbH • Industrie straße 12 • 82194 Gröbenzell, Germany Tel. +49(0)8142/503-0 • Fax +49(0)8142/503-190 • E-Mail info@phytron.de • www.phytron.de Phytron, Inc. • 600 Blair Park Road Suit e 220 • Williston, VT 05495 U SA Tel. +1-802-872-1600 • Fax +1-802-872-0311 • Email info@phytron.com • www.phytron.com...

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