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Digiplan PKC-35 User Manual

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Digiplan PKC-35
Stepper Drive
A l l t r a d e m a r k s , b r a n d n a m e s , a n d b r a n d s a p p e a r i n g h e r e i n a r e t h e p r o p e r t y o f t h e i r r e s p e c t i v e o w n e r s .
• C r i t i c a l a n d e x p e d i t e d s e r v i c e s
• I n s t o c k / R e a d y - t o - s h i p
Artisan Scientific Corporation dba Artisan Technology Group is not an affiliate, representative, or authorized distributor for any manufacturer listed herein.
In Stock
Used and in Excellent Condition
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https://www.artisantg.com/76580-3
• We b u y y o u r e x c e s s , u n d e r u t i l i z e d , a n d i d l e e q u i p me n t
• F u l l - s e r v i c e , i n d e p e n d e n t r e p a i r c e n t e r

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  • Page 1 Digiplan PKC-35 Stepper Drive In Stock Used and in Excellent Condition Open Web Page https://www.artisantg.com/76580-3 A l l t r a d e m a r k s , b r a n d n a m e s , a n d b r a n d s a p p e a r i n g h e r e i n a r e t h e p r o p e r t y o f t h e i r r e s p e c t i v e o w n e r s .
  • Page 2 For engineering For engineering assistance in Europe: assistance in the U.S.: Parker Hannifin plc Parker Hannifin Corporation Electromechanical Division - Digiplan Compumotor Division 21 Balena Close 5500 Business Park Drive, Suite D Poole, Dorset Rohnert Park, CA 94928 England, BH17 7DX...
  • Page 3 Artisan Scientific - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisan-scientific.com...
  • Page 4 The information in this user guide, including any apparatus, methods, techniques, and concepts described herein, are the proprietary property of Parker Digiplan or its licensors, and may not be copied, disclosed, or used for any purpose not expressly authorised by the owner thereof.

  • Page 5: Supply Voltage Selection

    IMPORTANT INFORMATION FOR USERS Power Connections Supply The PKC60M/80M Packaged Drive is supplied with its supply voltage selector set to 230V, as shown below. Voltage Selection 115V 230V AC SUPPLY VOLTAGE 115V AC operation can be set by adjustment of the supply selector, which is positioned by the supply input connector (see Mains Supply in Installation ).

  • Page 6: Table Of Contents

    Major changes introduced at revision 05 are: LVD compliance Factory default jumper link settings have changed Warning symbols used on Digiplan drives have the following meanings: Refer to the Protective conductor terminal accompanying documentation...
  • Page 7 PKC SERIES PACKAGED STEPPER DRIVES USER GUIDE Product Type: PKC 60M/80M Packaged Stepper Drive The above product is in compliance with the requirements of directives • 73/23/EEC Low Voltage Directive • 93/68/EEC CE Marking Directive The PKC drive is sold as a complex component to professional assemblers, as a component it is not compliant with Electromagnetic Compatibility Directive 89/336/EEC.

  • Page 8: Chapter 1. General Description

    The drives can also be used in conjunction with Digiplan or Compumotor packaged indexers; in this case an OPT2 opto card will be required to provide isolation between the control system and the drive.

  • Page 9: Specification

    PKC SERIES PACKAGED STEPPER DRIVES USER GUIDE Note: Previous versions of the PKC used to incorporate CD20/25/25M/30/35/35M drives. CD60/80M drives offer ministepping as standard, and the CD80M offers higher current. The former boost input is now external reset. The mains input to the PKC is now via an IEC connector, and a mains voltage selector is provided.

  • Page 10: Fuse Ratings

    CHAPTER 1. GENERAL DESCRIPTION 292.0 (11.5) Recommended diam. screw/bolt size M6 or 0.25" (0.26) 15.0 (0.6) 279.0 (11.0) Figure 1-1. Mounting Dimensions - mm (ins) Fuse Ratings Four fuses are fitted to the drive power supply circuits. These are located on the motherboard, and are accessible by removing the drive cover (refer to Chapter 5 "Removal and Replacement of Drive Module").
  • Page 11 PKC SERIES PACKAGED STEPPER DRIVES USER GUIDE There are four LEDs which indicate the drive operating conditions. These are located behind the terminal blocks, and their functions are Functions as follows: LED Number Function LED1 indicates that the drive is on zero phase. LED2 indicates a drive fault.

  • Page 12: Chapter 2. Installation

    CHAPTER 2. INSTALLATION Chapter 2. INSTALLATION The drive module has been designed to be mounted with the mounting flanges on a vertical surface. In this position, optimum cooling is guaranteed. Motor and signal connections are made to three terminal blocks on one end of the drive.
  • Page 13 PKC SERIES PACKAGED STEPPER DRIVES USER GUIDE General Input/output signal connections longer than about 500mm should use wires having a collective or individual screen. Route signal Wiring and connections separately from power and motor connections. If the Earthing motor leads run in the same trunking as signal leads, then either the Recommen- motor or signal leads should be screened.

  • Page 14: Mains Supply

    CHAPTER 2. INSTALLATION Mains Supply The AC mains supply is connected via the IEC mains connector at the top of the unit (see Figure 2-2). The voltage is set to either 115V or 230V using the mains selector positioned by the IEC inlet. The input is protected by a 6.3A time-lag, high-breaking-capacity fuse (5 x 20mm) incorporated in the mains connector.
  • Page 15 Do not use as drive current setting which exceeds the motor rating. NOTE: If the PKC was sold with a QM or RM motor (sold in the USA) refer to the "Digiplan Motor User Guide" supplied with the motor, or call Digiplan USA. This motor user guide contains complete wiring and current information for these motors.

  • Page 16: Environmental Considerations

    CHAPTER 2. INSTALLATION Motor Cable The recommended gauge for PKC drives is 1.5mm . Use a cable containing four conductors plus the braided screen. The temperature rating of the cable must be greater than or equal to the motor case temperature and should be at least 80°C. The insulation rating should be at least 350V.
  • Page 17 Grn/Wh Link Black & White, link Org & Blk/Wh T.box (x8) 1 Link 2 & 6, link 7 & 8 Stebon, Digiplan SM 8-lead Pink Link Blue & violet, link White & Grey T.box Link 5 & 6, link 7 & 8 M.A.E.
  • Page 18 Grn & Org & White Red/Wh Blk/Wh Grn/Wh T.box(x8) 1 & 2 3 & 6 4 & 7 5 & 8 Stebon, Digiplan SM 8-lead Rd & Yel & Wh & Black & Blue Violet Pink Grey T.box 1 & 6 2 &...

  • Page 19: Control Signal Connections

    12 PKC SERIES PACKAGED STEPPER DRIVES USER GUIDE Motor Supply As supplied the drive will operate at a motor supply voltage of 85v DC. This is necessary in order to obtain the optimum high-speed Voltage performance, but in low-speed applications it may be preferable to use a Setting lower supply voltage.
  • Page 20 CHAPTER 2. INSTALLATION 13 +24v OUT: This is an auxiliary output which may be used to Description of Terminal Functions power external circuitry, maximum current 500mA. It is advisable to use an external decoupling capacitor (2200uF 40v) if the current to be drawn exceeds 250mA.
  • Page 21 14 PKC SERIES PACKAGED STEPPER DRIVES USER GUIDE __________ ENERGISE: This input enables the motor to be de-energised so that it may be rotated slowly by hand (if it is safe to do so) without switching the system off. To remotely de-energise the motor, drive LK3 must be in position I.
  • Page 22 CHAPTER 2. INSTALLATION 15 ______ 16. +LIMIT: This is a directional limit switch input which inhibits motion in one direction only. It should be connected to a normally- open pair of switch contacts, the second contact being taken to 0v. When the input is shorted to ground it disables the clock and a normal deceleration to stop will occur.
  • Page 23 16 PKC SERIES PACKAGED STEPPER DRIVES USER GUIDE _____ 21. FAST 2: When this input is taken low it calls up the Fast Rate of the oscillator. The oscillator generates a fixed-frequency waveform and the required acceleration and deceleration is performed by the buffered clock.
  • Page 24 CHAPTER 2. INSTALLATION 17 _________________________ 29. INT. CK OUT/HOME SPEED IN: This is the output from the BC7 internal oscillator. It is normally linked internally to the buffer input via link 6 on the buffered clock card. This same terminal becomes the HOME SPEED input if an RC9 ramped clock is used in place of the BC7.
  • Page 25 18 PKC SERIES PACKAGED STEPPER DRIVES USER GUIDE 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 CLOCK BUFFERED SLOW FAST CLOCK IN 100K CLOCK Figure 2-5. Control Connections for Drive Fitted with BC7 Buffered Clock 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 CLOCK FAST...

  • Page 26: Internal Oscillator

    CHAPTER 2. INSTALLATION 19 Internal As well as providing for an optional BC7 or RC9 clock card (described later in this chapter), the motherboard incorporates as Oscillator standard an internal oscillator having two speed ranges. The speed in each range is adjusted using preset controls RV1 and RV2 (see Figure 1-2), with provision for external controls if required.
  • Page 27 20 PKC SERIES PACKAGED STEPPER DRIVES USER GUIDE The Optional The ramped clock is basically a wide-range, remotely-programmable oscillator. It incorporates acceleration and deceleration circuits RC9 Ramped which enable the motor to be operated at full speed without loss of Clock synchronism.
  • Page 28 CHAPTER 2. INSTALLATION 21 Deceleration time 0.1 to 5 secs. Clock output Low-going pulse 12µS wide. Input circuits 4K7 min. impedance to +12V. Logic 1 level +11V to +30V or open-circuit. Logic 0 level less than +1V at 3mA or short- circuit to 0V.
  • Page 29 22 PKC SERIES PACKAGED STEPPER DRIVES USER GUIDE At point H only the Fast input is applied, and again the motor will start off at the Home speed and accelerate to full speed. At J the limit switch operates, causing the motor to decelerate to the Home speed and stop at K.
  • Page 30 CHAPTER 2. INSTALLATION 23 POSITIVE DIRECTION FAST SPEED SPEED HOME SLOW SPEED SPEED NEGATIVE DIRECTION SLOW SPEED HOME SPEED FAST SPEED DIRECTION REQUEST +LIMIT DECELERATION COMPLETE MOTION REQUEST MOTOR DIRECTION Figure 2-7. Ramped Clock Waveforms When the Fast input is removed, the deceleration current generator is turned on and this discharges the capacitor at a controlled linear rate.
  • Page 31 24 PKC SERIES PACKAGED STEPPER DRIVES USER GUIDE When a limit condition is detected the interlock circuit disconnects all inputs so that the motor decelerates to a halt. To re-start the motor it is necessary to change the Direction Request, when the input conditions will be restored allowing the motor to move off in the opposite direction.
  • Page 32 CHAPTER 2. INSTALLATION 25 RC9 Ramped Clock The limit interlock circuits are brought into operation by shorting the Limit Switch appropriate limit input to 0V. This method of connection is shown in Connections Figure 2-9(a) and is satisfactory when small microswitches, reedswitches or proximity switches are used.
  • Page 33 26 PKC SERIES PACKAGED STEPPER DRIVES USER GUIDE The ideal method of setting up the clock for optimum performance is to use the control system as an indexer so that the number of step pulses fed to the motor is controlled. If this is not possible or if the system is to be manually controlled, refer to the following sections which explains the procedure to adopt when no indexer is available.
  • Page 34 CHAPTER 2. INSTALLATION 27 Change over the Direction Request and confirm that the motor behaves correctly when indexed in the reverse direction. If the Slow speed is to be used, arrange to call up the Slow input and adjust the rate by means of RV1. The setting will clearly depend on the purpose for which the slow speed is required, but it must be slower than the Home speed assuming that the latter has been set up as suggested near the top of the start/stop range.
  • Page 35 28 PKC SERIES PACKAGED STEPPER DRIVES USER GUIDE the inherent torque/speed characteristics of the motor and also the increase of viscous drag loading with speed. In certain cases where there is abundant torque available and a brisk acceleration is required, some improvement may be effected by making the acceleration characteristic more linear.
  • Page 36 CHAPTER 2. INSTALLATION 29 The Optional The BC7 Buffered Clock is designed for use with control systems which generate a sequence of clock pulses at a rate corresponding BC7 Buffered to the desired motor speed. These pulses may be delivered as a Clock burst giving an index amount, at a fixed frequency for constant- speed operation, or in a random fashion with a varying period.
  • Page 37 30 PKC SERIES PACKAGED STEPPER DRIVES USER GUIDE Operating The buffered clock is based on an up-down counter which stores the Principles incoming pulses (see Figure 2-12). The output from the counter drives a D-to-A converter which in turn feeds a voltage-controlled oscillator.
  • Page 38 CHAPTER 2. INSTALLATION 31 The number of pulses stored in the buffer is referred to as the following error. This increases to a maximum at the end of acceleration, and reduces to zero when the motor stops. The maximum following error depends both on speed and the setting of the gain control.
  • Page 39 32 PKC SERIES PACKAGED STEPPER DRIVES USER GUIDE Buffered Clock Link Function Link Functions Number on the BC7 Link 3 Factory set offset link (do not remove). Link 6 Links the output from the internal oscillator directly to the buffered clock. Remove this link if the oscillator output is to be used independently (available on "internal clock out"...
  • Page 40 CHAPTER 2. INSTALLATION 33 +24V LIMIT LIMIT SWITCH INPUT (NC) LIMIT LIMIT SWITCH INPUT (NO) 1K OHMS 1 WATT Figure 2-13. Limit Switch Configurations BC7 Buffered There are two adjustments to be made on the card, and these should Clock: Setting Up be carried out with the motor fully loaded.
  • Page 41 34 PKC SERIES PACKAGED STEPPER DRIVES USER GUIDE Set up the Indexer so that its output rate corresponds to the Adjustment Using an Indexer maximum required motor speed. Arrange to index through a whole number of motor revolutions, e.g. 4000 steps giving 10 revolutions at 400 steps/rev.
  • Page 42 CHAPTER 2. INSTALLATION 35 at the required maximum speed). The following error at full speed will now incorporate a 20% margin which is adequate for most applications. Switch off and remake the feedback connection. Repeat the indexing operation through a whole number of motor revolutions and slowly rotate the Base speed preset clockwise until the motor runs on after decelerating, shown by the pointer overshooting the reference mark.
  • Page 43 36 PKC SERIES PACKAGED STEPPER DRIVES USER GUIDE Artisan Scientific - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisan-scientific.com...

  • Page 44: Chapter 3. Setting Up The Cd60/80M Drive

    CHAPTER 3. SETTING UP THE CD60/80M DRIVE 37 Chapter 3. SETTING UP THE CD60/80M DRIVE The drive, as supplied, operates in the 400 step/rev mode and will deliver the minimum rated current to the motor. It is possible to change the operating conditions by means of links on the translator. Refer to Chapter 5 for drive module removal and replacement procedure.
  • Page 45 38 PKC SERIES PACKAGED STEPPER DRIVES USER GUIDE The 4 links allow the adjustment of standby current reduction, resolution, the selection of a permanent or selectable energise function and motor current. The range of options available is shown in Table 3-1. Link No.
  • Page 46 CHAPTER 3. SETTING UP THE CD60/80M DRIVE 39 Energise The energise edge connector signal allows a drive to be remotely selected, depending upon the logic state of the controlling signal. When a drive is shutdown or de-energised the motor may be turned slowly by hand (if it is safe to do so) to allow the re-positioning of mechanical components.
  • Page 47 40 PKC SERIES PACKAGED STEPPER DRIVES USER GUIDE Artisan Scientific - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisan-scientific.com...

  • Page 48: Chapter 4. Opt2 Interface Card

    CHAPTER 4. OPT2 INTERFACE CARD 41 Chapter 4. OPT2 INTERFACE CARD The OPT2 interface card plugs into terminal TB2 on the drive motherboard when the PKC series drive is being driven from a Compumotor control system. The OPT2 card provides isolation between the drive and control system.
  • Page 49 42 PKC SERIES PACKAGED STEPPER DRIVES USER GUIDE Artisan Scientific - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisan-scientific.com...

  • Page 50: Chapter 5. Troubleshooting

    CHAPTER 5. TROUBLESHOOTING 43 Chapter 5. TROUBLESHOOTING Fault There are three protection systems built into the drive, any of which may cause it to shut down. The reason for shutdown is shown by Conditions LED indicators. Overcurrent An excessive current flowing in the motor leads causes the overcurrent circuit to shut down the drive.
  • Page 51 44 PKC SERIES PACKAGED STEPPER DRIVES USER GUIDE 3. Disconnect the motor and switch on again. If the overcurrent LED comes on, the drive has been damaged. If not, check for shorts or crossed connections on the motor leads. Occasionally a very low inductance motor may cause the drive to fault out.
  • Page 52 CHAPTER 5. TROUBLESHOOTING 45 An excessive deceleration rate will cause the motor to overshoot when coming to rest, with the result that it performs too many steps. This effect is usually accompanied by a screeching sound during deceleration. If the motor runs excessively hot, check the motor rating against the drive output.
  • Page 53 46 PKC SERIES PACKAGED STEPPER DRIVES USER GUIDE (f) Replacement is the reversal of removal, but great care should be taken when replacing the cover, to relocate the LEDs correctly in the cover. Note that when replacing the drive, silicone grease is used on the mating surfaces of the heat shunt.
  • Page 54 Equipment for repair should System NOT be returned directly to Digiplan without prior authorisation. Repairs will be carried out by Digiplan but will be processed via your supplier. Digiplan may at their discretion authorise direct shipment to and from Poole or Rohnert Park, but only by prior arrangement with your supplier.
  • Page 55 48 PKC SERIES PACKAGED STEPPER DRIVES USER GUIDE Artisan Scientific - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisan-scientific.com...

  • Page 56: Index

    INDEX 49 Index Jumper link settings 37 +24V out 13 LED functions 4 AC power connections 7 Limit 15 Allow clock 15 Link settings table 38 BC7 board layout 35 Mains connections 8 BC7 buffered clock 29 Mains supply 7 Limit switch connections 32 Mains voltage selection 5 Link functions 32...
  • Page 57 50 PKC SERIES PACKAGED STEPPER DRIVES USER GUIDE Setting up the CD60/80M drive 37 Slow 14 Slow 2 16 Slow adjust 14 Slow adjust 2 16 Specification 2 Supply failure 43 Suppression circuits 6 Temperature of motor warning 9 Temperature rating of motor cable 9 Temperature, operating 9 Temperature, storage 9 Troubleshooting 43...

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