Download
Share
Print this page
  1. Manuals
  2. Brands
  3. Polar Instruments Manuals
  4. Test Equipment
  5. RITS520a
  6. Service manual

Polar Instruments RITS520a Service Manual

Robotic impedance test system
Hide thumbs

Advertisement

Quick Links

Download this manual
Polar RITS520a Robotic Impedance Test System
RITS520a Service Manual
Polar Instruments Ltd.
Polar Instruments Ltd.
Garenne Park
St. Sampson
Guernsey
Channel Islands
GY2 4AF
ENGLAND
Fax: +44 (0) 1481 252476
Email:
mail@polarinstruments.com
Web: www.polarinstruments.com
MAN 194–0307

Advertisement

loading
Need help?

Need help?

Do you have a question about the RITS520a and is the answer not in the manual?

Questions and answers

Subscribe to Our Youtube Channel

Related Manuals for Polar Instruments RITS520a

Summary of Contents for Polar Instruments RITS520a

  • Page 1 Polar RITS520a Robotic Impedance Test System RITS520a Service Manual Polar Instruments Ltd. Polar Instruments Ltd. Garenne Park St. Sampson Guernsey Channel Islands GY2 4AF ENGLAND Fax: +44 (0) 1481 252476 Email: mail@polarinstruments.com Web: www.polarinstruments.com MAN 194–0307...
  • Page 3 RITS520a Service Manual Comment Sheet Please copy this master sheet and use it to help us to improve this service manual. We would like you to tell us about its accuracy, format and quality. Please give specific references i.e. page numbers or headings and attach examples wherever possible.
  • Page 5 Reliability statistics indicate that if the TDR head is damaged, it is likely to have arisen from misuse (e.g. static damage or similar) and as these circumstances are outside Polar Instruments’ control, any further failures will not be covered by warranty.
  • Page 7 DECLARATIONS European Community Directive Conformance Statement Refer to the Operator Manual to determine conformance with European Community Directives. RITS520a SERVICE MANUAL DECLARATIONS • • • • i...
  • Page 8 When the unit is connected to its supply, the opening of covers or removal of panels is likely to expose dangerous voltages. GROUNDING This unit must be earthed (grounded); DO NOT operate the instrument with the safety earth disconnected. ii • • • • SAFETY RITS520a SERVICE MANUAL...
  • Page 9 Changing the line voltage settings on this instrument must only be performed by a skilled electronics technician. Instructions for changing the line voltage settings are contained in LINE VOLTAGE AND FUSE CHANGING. RITS520a SERVICE MANUAL SAFETY • • • • iii...
  • Page 10 The unit is designed for use indoors in an electrical workshop environment. Use only the accessories (e.g. test probes and clips) provided by Polar Instruments. The instrument must be maintained and repaired by a skilled electronics technician in accordance with the manufacturer’s instructions.
  • Page 11 SYMBOLS The following symbols are used in this instrument. REFER TO MANUAL Equipment connectors are to be used with Polar Instruments accessory cables, linking to external equipment as specified in the Operator Manual only. INTERLOCK OVERRIDE When the key is in this position the doors may be opened while the machine is operating.
  • Page 12 PSU (CARD 8) FCA127 500mAT FCA113 FCA127 Z DRIVE (CARD 5) FCA137 CAMERA POWER 0.5AT FCA113 For continued protection against electric shock and fire hazards, replace only with fuses of identical specification. vi • • • • FUSES RITS520a SERVICE MANUAL...
  • Page 13 POWER CORD COLOR CODES ........... iii POWER SUPPLY ................iii Line voltage setting .............. iii CAUTION..................iv Electrical Isolation ..............iv Static Sensitive Devices ............iv RITS520a OPERATION..............iv CAUTION..................iv Measurement errors due to mobile phones......iv OPERATION................... iv SYMBOLS..................v FUSES SECTION 1 –...
  • Page 14 SECTION 6 – FAULT DIAGNOSIS Software diagnostics ..............33 LOOPBACK ................ 36 SECTION 7 – REPLACEMENT PARTS Safety critical spares for the RITS520a ......... 37 Replacement parts................ 39 SECTION 8 – SCHEMATIC DIAGRAMS viii • • • • CONTENTS...
  • Page 15 Appendix A – Design Notes On RITS520a Test Fixtures Fixture construction ............A1 Board Mounting Height............A2 Clearance under the Board ..........A2 Indexing the boards under test........... A4 Tooling Pins................ A5 ‘Pockets’ in Top plate material ........... A6 Double Sided Sticky Tape ..........A7 Removable Coupon Trays..........
  • Page 17 1 year. When lubricating the positioning screw shafts use only Polar supplied lead screw lubricant (Polar part number MPA197) available from Polar Instruments Ltd or your local distributor Lubrication Shuttle feed screw lubrication Every 3 months: Lightly grease the shuttle feed screw.
  • Page 18 WARNING: Do not release bolts which are marked with “witness marking” or what might appear to be paint spots. These are set up precisely during manufacture. Obtain advice from your Polar Instruments Ltd local office before attempting any operation which involves releasing any marked screws.
  • Page 19 Remove the screws and lift off the lid of the box. The RITS520a frame is built using a special extrusion and connection system. The clamp mechanism is shown below and overleaf. The T head of the peg...
  • Page 20 4 • • • • SECTION 1 – PERIODIC MAINTENANCE RITS520a SERVICE MANUAL...
  • Page 21 Inspect again and repeat until correct. Note also that the spring can connect to the front section at two points. The ideal setting lines up the RITS520a SERVICE MANUAL SECTION 1 – PERIODIC MAINTENANCE • • • • 5...
  • Page 22 Work on the Z axis or shuttle may disturb the wiring. During disassembly, labels should be fitted to each cable identifying its location but if these are lost or damaged refer to the following photographs. 6 • • • • SECTION 1 – PERIODIC MAINTENANCE RITS520a SERVICE MANUAL...
  • Page 23 Z axis limit sensor wiring The RITS520a uses two types of sensor PCB, one with 2mm pitch connectors (MSA216 ) and one with 2.54mm pitch (MSA243). When replacing, ensure the correct replacement is used;...
  • Page 24 The bulb may now be replaced. Bulb specification: 12V 20W 36 degree. 8 • • • • SECTION 1 – PERIODIC MAINTENANCE RITS520a SERVICE MANUAL...
  • Page 25 Turn on. Only the test circuit is activated. RITS520a SERVICE MANUAL SECTION 2 – SERVICING THE SLIDING DOOR ASSEMBLIES • • • • 9...
  • Page 26 Lift the window panels off the machine. 10 • • • • SECTION 2 – SERVICING THE SLIDING DOOR ASSEMBLIES RITS520a SERVICE MANUAL...
  • Page 27 Reassembly is the reverse of the above but ensure that the appropriate clamp parts are fitted as the frame is assembled. Installing the wiring is the most difficult part RITS520a SERVICE MANUAL SECTION 2 – SERVICING THE SLIDING DOOR ASSEMBLIES • • • • 11...
  • Page 28 Take notes when dismantling and consult the diagram in the upgrade kit. 12 • • • • SECTION 2 – SERVICING THE SLIDING DOOR ASSEMBLIES RITS520a SERVICE MANUAL...
  • Page 29 Adjust the disc on the rear of the Z motor so that the slot in the disc is centered in the IR sensor. Also look at RITS520a SERVICE MANUAL SECTION 3 – ADJUSTMENT PROCEDURES • • • • 13...
  • Page 30 From the rear of the machine adjust the shuttle motor disc so that the slot is central in the sensor. Also adjust the running clearance of the disc as in the previous 14 • • • • SECTION 3 – ADJUSTMENT PROCEDURES RITS520a SERVICE MANUAL...
  • Page 31 RITS520a SERVICE MANUAL SECTION 3 – ADJUSTMENT PROCEDURES • • • • 15...
  • Page 32 Note that the adjustable cam has a hollow shaft while the fixed one has a solid shaft. A special spanner 16 • • • • SECTION 3 – ADJUSTMENT PROCEDURES RITS520a SERVICE MANUAL...
  • Page 33 Remove and tighten the screws. If this operation is performed on the shuttle, the link to the drive nut should be removed to allow the slide to be freely operated/removed. RITS520a SERVICE MANUAL SECTION 3 – ADJUSTMENT PROCEDURES • • • • 17...
  • Page 35 8. The system has four DC supplies, 5V, 24V, 40V and 9V for the camera on card 4. The 40V (nominal) supply is switched through the RITS520a SERVICE MANUAL SECTION 4 – CIRCUIT DESCRIPTION • • • • 19...
  • Page 36 Motion Control The control system is a proprietary 4-channel control system and Polar Instruments Ltd cannot provide any service information for the PC card or the breakout board. This also applies to the 3 main motor driver cards, those in slots 6 and 7 being interchangeable but not that in slot 3 which is of a different specification.
  • Page 37 Not used Not used Not used Not used Not used Not used Not used Shuttle disc slot sensor X disc slot sensor Y disc slot sensor RITS520a SERVICE MANUAL SECTION 4 – CIRCUIT DESCRIPTION • • • • 21...
  • Page 38 First at TX18A and TX18B which powers the cards logic. Second at TX44ASW and TX44BSW which power the motors. The latter supplies are switched through the safety system and are 22 • • • • SECTION 4 – CIRCUIT DESCRIPTION RITS520a SERVICE MANUAL...
  • Page 39 PC to generate warnings if the safety system fails to set when commanded. Z step card This card uses the L297/L298 chipset to drive the Z stepper motor. RITS520a SERVICE MANUAL SECTION 4 – CIRCUIT DESCRIPTION • • • • 23...
  • Page 40 2V. This fact is used to lockout the output transistor (Q1 etc) if the probe is not present by turning on Q7 etc. 24 • • • • SECTION 4 – CIRCUIT DESCRIPTION RITS520a SERVICE MANUAL...
  • Page 41 6. Following this through to the 14 way “orange” plug, the loops are between pins 1 and 5 (loop1) and between 7 and 11 (loop2). RITS520a SERVICE MANUAL SECTION 4 – CIRCUIT DESCRIPTION • • • • 25...
  • Page 42 Two emergency Stop buttons allow the machine to be stopped at any time if a fault condition occurs (e.g. a coupon has come loose on the fixture). 26 • • • • SECTION 4 – CIRCUIT DESCRIPTION RITS520a SERVICE MANUAL...
  • Page 43 All components of the safety system are special switches and relays which are designed for safety critical applications. Do not fit substitute replacements. Obtain the correct spares from Polar Instruments Ltd or their distributors or agents. Testing and repair The relays and control circuits are on the power supply card in the right hand slot in the rack of the control cabinet.
  • Page 44 This prevents operation with doors removed so if attempting to check switches with the doors off these must be pushed up with a wedge before the top loop (green LED) will work. 28 • • • • SECTION 4 – CIRCUIT DESCRIPTION RITS520a SERVICE MANUAL...
  • Page 45 The PC connecting cable may be taken direct to this board. The joystick cable may also go direct to this board. 5V power is supplied direct to this board from J19. RITS520a SERVICE MANUAL NOTES ON COMPUMOTOR ASSEMBLIES • • • • 29...
  • Page 46 PC Card Bit Switch Settings CARD 6 & 7 SD12 Motor Driver Card Link Settings 30 • • • • NOTES ON COMPUMOTOR ASSEMBLIES RITS520a SERVICE MANUAL...
  • Page 47 Lift off the lid. Set the line voltage selector switch to the required setting. Replace the fuses 115v 250mAT FCA112 230V 160mAT FCA121 RITS520a SERVICE MANUAL SECTION 5 – LINE VOLTAGE AND FUSE CHANGING • • • • 31...
  • Page 48 Locate the line voltage selector near the mains inlet and set to the required line voltage. Replace the fuses 115v 250mAT FCA112 230V 160mAT FCA121 32 • • • • SECTION 5 – LINE VOLTAGE AND FUSE CHANGING RITS520a SERVICE MANUAL...
  • Page 49 Only a technically qualified person aware of the hazards and taking all reasonable care should perform these procedures. Software diagnostics Use of the diagnostic software of the RITS520a This can be found by entering the utilities menu and selecting RITS Diagnostics. The following screen appears: This screen allows the prober to be driven directly and all key inputs monitored.
  • Page 50 Joystick Mode enables the joystick, which can then drive the X and Y axes. The joystick box displays the results from the joystick. The push button results display in the top boxes, a tick 34 • • • • SECTION 6 – FAULT DIAGNOSIS RITS520a SERVICE MANUAL...
  • Page 51 Probe select allows the probe position (1 to 6) to be entered and on clicking the “Select probe” button the shuttle will move to this position. RITS520a SERVICE MANUAL SECTION 6 – FAULT DIAGNOSIS • • • • 35...
  • Page 52 Any stuck lines indicate a fault in either the cable or the breakout board. 36 • • • • SECTION 6 – FAULT DIAGNOSIS RITS520a SERVICE MANUAL...
  • Page 53 Safety critical spares for the RITS520a The following items are critical to the continued safe operation of the unit. It is essential that if these parts need to be replaced that approved spares are obtained from Polar Instruments Ltd or their distributors or agents. Item...
  • Page 54 Grease MPP268 Cable tie MPP269 Cable tie SWB169 Stop switch SWB170 Roller switch MSA234 Test card WMAD1403 Video cable WMAD1404 Camera power cable WMAD1447 Probe extension cable 38 • • • • SECTION 7 – REPLACEMENT PARTS RITS520a SERVICE MANUAL...
  • Page 55 Spot Lamp assembly LED124 Green LED panel Lamp LED135 Hi intensity red LED panel lamp LED136 Blue LED panel Lamp MMP120 S/A cable clips MNS193 M5 Crimp eye tag RITS520a SERVICE MANUAL SECTION 7 – REPLACEMENT PARTS • • • • 39...
  • Page 56 Power distribution box (in side panel of later units) MWP155 Ground label MWPD1313 Plain label for probe slide MWPD1423 Colour Stripe label MWPD1429 RITS520A label (inside window) MWPD1444 Safety Label plate (Yellow/black) MWPD1446 “HOT” label for lamps SWB169 Stop switch (with label) SWB170 Roller switch, brass shaft...
  • Page 57 Camera power cable WMAD1415 Z sensor harness WMAD1416 Shuttle sensor harness WMAD1447 Probe touch sensor Extension Cable ** These items would not normally be supplied complete unless damaged . RITS520a SERVICE MANUAL SECTION 7 – REPLACEMENT PARTS • • • • 41...
  • Page 59 SECTION 8 – SCHEMATIC DIAGRAMS RITS520a SERVICE MANUAL SECTION 8 – SCHEMATIC DIAGRAMS • • • • 43...
  • Page 61 Two 6mm steel dowel pins accurately index the top plate to the underlying table via matching steel bushes inserted into the top plate material. RITS520a SERVICE MANUAL Appendix A – Design Notes On RITS520a Test Fixtures • • • • A1...
  • Page 62 Often this clearance can be provided in the form of a small strip of material that the edges of the board under test sit on, as in the following photographs. A2 • • • • Appendix A – Design Notes On RITS520a Test Fixtures RITS520a SERVICE MANUAL...
  • Page 63 Top view of fixture plate with three boards fitted for testing. RITS520a SERVICE MANUAL Appendix A – Design Notes On RITS520a Test Fixtures • • • • A3...
  • Page 64 — all of which have their own set of advantages and disadvantages. Options include Tooling pins Pockets in top plate material Double-sided adhesive tape (not recommended) The options are discussed below. A4 • • • • Appendix A – Design Notes On RITS520a Test Fixtures RITS520a SERVICE MANUAL...
  • Page 65 Fiducial points ( 0.4mm / 0.015” works well ) can be drilled directly into the end of two opposing pins. Disadvantages — Can be awkward for operators to load/unload boards. RITS520a SERVICE MANUAL Appendix A – Design Notes On RITS520a Test Fixtures • • • • A5...
  • Page 66 ‘pockets’ — this further degrades positional accuracy. As the fixture is used in the long term the clearances above can get larger due to wear. A6 • • • • Appendix A – Design Notes On RITS520a Test Fixtures RITS520a SERVICE MANUAL...
  • Page 67 RITS is idle. Coupons are located on the removable tray by one of the methods described above. RITS520a SERVICE MANUAL Appendix A – Design Notes On RITS520a Test Fixtures • • • • A7...
  • Page 68 Care needs to be taken when manufacturing the coupon trays to ensure that they are dimensionally matched with each other. A8 • • • • Appendix A – Design Notes On RITS520a Test Fixtures RITS520a SERVICE MANUAL...