PZB25 Reference & Maintenance Manual
Contents
1. PZ B D 5 Reference amp Maintenance Manual primatics PZB25 Reference amp Maintenance Manual PZ B D 5 i Reference amp Maintenance Manual primatics 32114 Mallard Ave PO Box 409 Tangent OR 97389 0409 U S A Phone 541 791 9678 Fax 541 791 9410 Web www primatics com E mail info primatics com PZB25 Manual Revision Information Publication Date Notes Dec 2015 As Issued Notice The descriptions drawings and specifications contained herein are subject to change Primatics is not responsible for errors or omissions herein or for incidental damages in connection with the furnishing or use of this information This document shall not be reproduced photocopied or duplicated in whole or in part without prior written approval of Primatics Corporation For Specifications Dimensioned Drawings and additional information refer to the PZB25 Datasheet available from our website at www primatics com Copyright 2015 by Primatics Inc All Rights Reserved Primatics the Primatics logo PrimaFlex PrimaSeal amp SimpleMatch are trademarks of Primatics Inc PZ B 25 Reference amp Maintenance Manual PZB25 Manual Revision Information ins 2 KEIER 4 2 Introduction About the PZB25 een 5 A 3 P rs nal Safety 7 Rien na tee ttes tn annenin ananas 6 4 CONVENTIONS 2 55 tsar terne enterrer inerte rt rente idee tert nantes e 7 4 1 Direction of Motion iii 7 4 2 Units of Measure iii 7 5 Ins2. Using a M4 hex tool inserted into the end of the internal ballscrew rotate the screw to raise the PZB to maximum height 12 PZ B D 5 Reference amp Maintenance Manual 3 Remove the lower cover using a 2mm hex tool to gain access to the indicated mounting holes along the base of the stage After mounting replace the lower then upper rear covers Use only M3 x 5mm fasteners on the lower cover 13 PZ B D 5 Reference amp Maintenance Manual 6 6 Electrical Connections 6 6 1 Limit Sensor Connector All configurations of the PZB25 include a connection for the internal limit sensors described in Table 6 1 Table 6 1 Limit Connector Dsub 9 with pins 5 Function Limit Power 5 to 24VDC 50mA Limit Power and Signal Common Forward upper Limit Reverse lower Limit Not used Not used Not used Not used Not used 00 I AA Go Po 6 6 2 Step Motor Option Table 6 2 Step Motor Connector Dsub 9 with pins I 5 DSub9 with pins Motor A Motor A Motor case Motor B Motor B Not used Not used Not used Motor Shield no internal connection Oo AA OIN 6 6 3 Failsafe Brake Option Table 6 3 Failsafe Brake Connector Molex MiniFit Jr 1x2 plug with pins Mating connector Molex 39 01 2020 with Molex 39 00 0039 sockets Pin Function 1 Brake 24VDC
3. Reference amp Maintenance Manual 6 8 Recommended System Test Before attaching a load or applying power to your stage verify the encoder if present and limit switches are working properly Move the stage hand by manually rotating the motor or inserting a M4 hex tool in the rear of the stage to engage the internal ballscrew Runaway conditions caused by miswired encoders can result in stage damage and personal injury When closing the position loop for the first time set the torque limit of your controller to a low value and use conservative tuning gains Once the control loop is working properly payloads can be added to the stage carriage 16 PZ B D 5 Reference amp Maintenance Manual 7 Preventive Maintenance Performing preventive maintenance procedures on your stage will extend its life and improve its long term performance 7 1 Lubrication Use clean room grease to lubricate the ballscrew and linear guide components We recommend NSK grease part GRS LG2 For low duty cycle applications it is recommended that the ballscrew and linear guides are re greased every six months High duty cycle applications may require more frequent re lubrication Lubrication intervals depend on duty cycle load and ambient conditions Inspection of the drivetrain elements may be required to determine the proper lubrication interval Primatics offers a grease kit that has all the necessary hardware to re lubricate the ballscrew and linear beari
4. These values show the range in which operation can be carried out safely but not the environmental range in which stages accuracy can be guaranteed Stage accuracy can be guaranteed at 20 C 1 C o Location should not be affected by electrical noise o Location should be where inspection and cleaning can be performed without difficulty Oo O 5 1 Heat and Humidity All positioning stages are assembled and tested at 20 C Any stage calibrations are also performed at 20 C For optimum accuracy the ambient temperature should be maintained at 20 C Deviations from this nominal temperature may result in degraded accuracy performance Ballscrew driven stages are also susceptible to thermal expansion effects The ballscrew nut can create a localized thermal gradient if driven at high speeds Airflow through the stage can help minimize ballnut heating 5 2 Contamination Applications in dirty or dusty environments require the electrical optical and mechanical components to be protected The PZB25 series is intended for clean environments free from small particulates and fluids The air the PZB25 is operated in should be clean and dry The cover protection and high pressure 60 120psi low flow air purge system is sufficient for environments generating moderate quantities of 0 5 mm and larger particles However for dusty wet or harsh environments or applications with continuous exposure to smaller contaminants additional protectio
5. surfaces 3 Clean all mounting surfaces with acetone In the absence of a granite surface plate we recommend a base plate made of the same material as the base of the stage A mounting surface constructed out of a material different from the stage base material can introduce warping in the stage in the presence of a thermal gradient The surface flatness should match the requirements of the application a good starting point is to have the mounting surface flat to less than 5 8yum 10 PZ B D 5 N Reference amp Maintenance Manual 6 4 Mounting a motor to the PZB25 The following text and illustrations give instructions to mount a motor onto the PZB25 1 Remove upper rear cover using a 2mm hex tool 2 Using a M4 hex tool inserted into the end of the internal ballscrew rotate the screw to raise the PZB to maximum height 3 Remove the motor mount using a M3 hex tool to remove the two indicated fasteners 4 Attach the motor to the motor mount 11 PZ B D 5 N Reference amp Maintenance Manual 5 Insert the motor shaft into the coupling and then fasten the motor mount to the stage Tighten the coupling onto the shaft by inserting a M2 5 hex tool as indicated Replace the upper rear cover 6 5 Mounting the PZB25 The following text and illustrations give instructions to accessing the PZB25 Mounting Holes 1 Remove upper rear cover using a 2mm hex tool 2
6. Forward Motion Optional Motor Figure 4 1 PZB25 Conventions 4 2 Units of Measure Primatics uses the metric system for all specifications and dimensions All linear dimensions are specified in millimeters Accuracy repeatability resolution flatness and straightness for the PZB is specified in microns Load capacity is specified in kilograms and moment capacity is given in Newton meters All torque specifications are given in Newton meters Thrust specifications are given in Newtons The following table gives some common conversions into English units Metric Unit English Unit 1 Kilogram equals 0 0685 slug 1 micron equals 0 0000394 inch 1 millimeter equals 0 0394 inch 1 Newton meter equals 8 85 in lbs 1 Newton equals 0 2248 Ibs 1 Kg has a weight of 2 205 Ib when g 9 8m s PZ B D 5 Reference amp Maintenance Manual 5 Installation Preparations This section outlines installation environments Unfavorable installation conditions may cause electric shock fire or breakdown Certain breakdown situations or malfunctions in particular may lead to serious injury or other consequences Assure that the unit is used under the following installation conditions Indoors free from being splashed by water No corrosive or inflammable gases present Well ventilated place minimum level of dust or waste An environmental temperature range between 0 40 C and humidity between 20 80 RH location with no condensation Note
7. ince injury or damage may result o Provide a safe access route and adequate room for servicing o Perform the recommended periodic maintenance described in this document o Verify that the work envelope is free of obstructions before the positioning stage is powered o Insure that you have the feedback wired properly to the controller before applying power to the positioning stage Improper feedback connections can cause a motor run away condition that has the potential to damage the stage and injure an operator o Only trained operators of the positioning stage should be allowed near the work environment o If so equipped identify emergency stop circuits and actuators in the workcell o Note the places in the workcell where pinch points occur and provide adequate safety clearance or safety curtain o Never operate the motor in a location that could be splashed by water exposed to corrosive or flammable gases or is near combustible substances since this may cause an electric shock fire or malfunction o Never touch the motor driver or peripheral devices when the power is on or immediately after the power is turned off The high temperature of these parts may cause burns PZ B D 5 Reference amp Maintenance Manual 4 Conventions 4 1 Direction of Motion The positive direction of motion is defined as when the carriage elevates upward overall height of stage increases Figure 4 1 illustrates this convention Positive
8. n damage to the stage A 2mm hex tool will remove all the hard cover screws 2 5mm hex tool is used for the coupling 3mm and 4mm hex tools are required for the stage mounting hardware 6 2 Unpacking Carefully remove the stage from its shipping crate and inspect it for evidence of shipping damage Report any damage immediately to your authorized dealer Improper handling of the stage may degrade its performance Follow these guidelines when handling and mounting your stage 1 Do not drop the stage onto its mounting surface Place the stage gently on the mounting surface Impact loads can cause high spots on mounting surfaces misalignment of drive components and warping of the base 2 Do not drill holes into the stage If additional holes are necessary contact your local distributor Lift the stage by its base structure only Do not lift by the motor drive assembly 4 Stage disassembly and alteration unless specified otherwise may void warranty 6 3 Mounting surface preparation The characteristics of the surface the positioning stage is mounted to will have a large effect on system performance An accurate and flat positioning stage will conform to the shape of its mounting surface therefore a flat mounting surface is required For best results in maintaining stage specifications we suggest the following 1 Use a laboratory Grade AA granite surface plate 2 Before mounting stage inspect for burrs or dings on the stage mounting
9. n must be designed Airflow through a stage must be filtered and dry The filtration system should reject particles larger than 2 microns Air pressures between 60 100 psi are sufficient for convection cooling A typical air source can be made suitable with the addition of an inline desiccant dryer and filter regulator assembly Humidity should be less than 85 and there should be no condensation in the environment in which the stage is used PZ B D 5 Reference amp Maintenance Manual 5 3 Electrical Noise Electrical noise is the corruption of signals carried over low voltage wires Encoder signals can be corrupted resulting in spurious encoder counts thus causing the stage to drift Grounding shielding and spatial separation are all countermeasures to reduce the influences of electrical noise on performance You can minimize the potential for electrical noise by observing the following installation precautions o Physically separate low voltage conductors from those carrying high voltage o Ensure that all components are properly grounded o Ensure that all wiring is properly shielded PZ B D 5 Reference amp Maintenance Manual 6 Installation Procedures 6 1 Tools you will need The PZB25 positioning stage has mounting holes for M5 SHCS in the base and M4 and M5 tapped holes in the tabletop M3 BHCS s are used to attach the covers The lower rear cover must be secured with M3 x 5mm long fasteners Longer fasteners will result i
10. ngs To gain access to component grease ports remove the covers On the end of each bearing block is a small hole where grease is injected using a syringe A light film can also be applied the linear bearings when the stage is at one extreme end of travel After power has been disconnected from the stage a light film of grease can be smeared along the length of the ballscrew Cycle the stage back and forth to distribute the grease and wipe off any excess The stage should be kept clean and a soft cloth should be used wipe down the stage Do not use compressed air to spray away dust since this may force dust into crevices Figure 7 1 Bearing block lubrication port 17 PZ B D 5 Reference amp Maintenance Manual 8 Troubleshooting amp Service 8 1 Troubleshooting Help For further assistance contact the factory M F 8AM to 5PM Pacific Time Phone 541 791 9678 Fax 541 791 9410 Web www primatics com E mail service primatics com 8 2 Service Should your device require factory service contact the factory for a Return Materials Authorization RMA When inquiring about an RMA please have the following information available o Your contact information name phone email address o Unit Serial Number see Figure 8 1 o Symptom of problem o History of troubleshooting steps already taken Figure 8 1 Unit Serial Number Location 18
11. tallation Preparations nes 8 5 1 Heat and Humidity iii 8 5 2 CONTAMINATION EEE RS ea RAR NT a dE 8 EECH Re e 9 6 Installation Procedures ee EE EEN 10 6 1 Tools you will need is 10 6 2 UMpaCkinG ws Pere AAs ES AE OS OER AOE OE BS OE OE OS OEE OE ES 10 6 3 Mounting surface preparation 10 6 4 Mounting a motor to the PZB25 iii 11 6 5 Mounting the PDZD3b iii 12 6 6 Electrical Connections sis 14 6 6 1 Limit Sensor Connector iii 14 6 6 2 Step Motor Option sise 14 6 6 3 Failsafe Brake Option sisi 14 6 7 Limit SWITCHES smash tentent nenn rev en RNA Den ne EAEKSEER AER EAEKSEER ENEE DEER 15 6 8 Recommended System Test 16 7 Preventive Maintenance ss 17 TA leie te E 17 8 Troubleshooting amp Service TE 18 Gah weit ee tino K mlel E 18 2 DOT WICC ras mnt or EEA cepeneasbensanst cepenessbensatetcepsvessvensaest Rene a RARE MERE Rene a Rene DE etes de 18 PZ B D 5 Reference amp Maintenance Manual 1 Overview This user guide is designed to help you install and maintain your PZB25 Series vertical positioning stage application Follow these steps to ensure correct stage installation and maximum stage life Step 1 Review this entire user manual Become familiar with all installation procedures prior to integrating your system Step 2 Review the safety summary to develop an understanding of standard safety practices when installing and operating automated equipment Step 3 Familiari
12. to release brake 2 Brake Common for brake release 14 PZ B D 5 N Reference amp Maintenance Manual 6 7 Limit Switches A home sensor is not present because the PZB25 was designed with the idea of finding a home position near the reverse limit of travel This facilitates moving downward normally out of harms way in the homing process The anticipated homing procedure would be to search for the reverse limit sensor transition and then move up off the sensor The Limit switches are ordered in either the Normally Closed L1 or Normally Open L2 configuration L1 When the carriage is in the normal operating range of travel both limit switches are closed When the carriage encounters a limit the switch opens The switch will close again when the carriage is moved away from the switch L2 When the carriage is in the normal operating range of travel both limit switches are open When the carriage encounters a limit the switch closes The switch will open again when the carriage is moved away from the switch The limit switch positions have been preset at the factory and cannot be adjusted Figure 6 3 shows the relative placement of the limit transitions Both limit switches can be ordered normally open or normally closed Range for Forward Sensor Transition Height of Carriage mm paj 12 6 90 12 5 775 0 0 65 125 oC Range for Reverse Sensor Transition Figure 6 1 PZB25 Limit Sensors 15 PZ B D 5
13. ze yourself with the conventions summary Step 4 Review installation procedures For best results follow these procedures carefully Step 5 Once you successfully complete all the installation procedures you will be ready to install and operate your stage Step 6 Review preventive maintenance section for proper lubrication schedule PZ B D 5 Reference amp Maintenance Manual 2 Introduction About the PZB25 The PZB Series is a general purpose ballscrew driven elevator stage with NEMA 17 motor mount It utilizes a moving wedge design that converts horizontal movement from a ballscrew to vertical elevation The design and components ensure sub micron resolution in a compact profile and make the PZB ideal for semiconductor inspection fiber optics assembly and machine vision applications requiring smooth motion exceptional stiffness and high resolution The PZB25 can be ordered with a motor either stepper or brushless servo with encoder A failsafe brake is also a standard ordering option The user may also supply their own motor compatible with the NEMA17 mount PZ B D 5 Reference amp Maintenance Manual A 3 Personal Safety A Please review before installing your positioning stage Observe common industrial safety practices when installing and operating automated equipment o Have power connections made by qualified personnel o Keep fingers and other items out of any opening in the stage while it is in operation s
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