Mahr Federal Maxum III Operating Instructions Manual
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Mahr Federal Maxum III Operating Instructions Manual

Digital electronic indicator
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  • Page 2: Table Of Contents

    Table of Contents Precautions and General Operation Information Standard Mode Product Features 4.1.1 Initial Setup- µ Standard/TSP Mode m® III Features Controls – Standard 4.1.2 Setting Tolerance Mode Limits Controls – Enhanced 4.1.3 Reapportioning Mode Measuring Range Setup Enhanced Mode Changing inch/metric 4.2.1 Enhanced/ Units...
  • Page 3 Table of Contents-continued Output Information ASCII Output µ Mating Connectors Standard Max m® Output Quick Setup Flowchart Digimatic Output...

  • Page 4: Precautions And General

    µ µ These instructions apply to the Max m® III m®III units are ruggedly built to Indicators and Indicating units: withstand hard use, and their gasketed case, crystal and stem assemblies resist 1.0 PRECAUTIONS AND encroachment by most fluids. However, µ...

  • Page 5: Product Features

    µ Tolerance Limits transducers. Max m® III Digital Allows the selection of left and right Transducers must be used with an adaptor µ µ tolerance limits within the analog scale cable to connect to Max m® and Max m® displayed. Plus Indicating Units.
  • Page 6 Selectable Digital Resolution There are two selections for digital resolution with each Digital Range selection. See below; Digital Range Available Resolutions 0.100inch / 1.99mm 0.0005” or 0.0001” / 0.005mm or 0.001mm 0.040inch / 1.0mm 0.0005” or 0.0001” / 0.005mm or 0.001mm 0.0199inch / 0.199mm 0.00005”...
  • Page 7 µ sign depending on measuring direction format, the Max m® Serial output format, selected in setup. Unit is inactive. and a digimatic output format. (Option) The sleep mode may be disabled as a factory option when requested at time Digital Calibration of order.
  • Page 8 Setup Lockout (Option) CAUTION Allows the entry into the setup mode via an Do NOT continuously toggle external access key (Order No. 2240545 – 6 pin, power source on and off as this can Order No. 2240547 –10 pin) when plugged cause damage to the digital indicator into the data output port.

  • Page 9: Controls - Standard Mode

    2.2 Controls – Standard Mode True Spindle Position (1) Enters unit into its TSP mode to show the Makes use of 6 push buttons (mode, left actual position of the spindle in the limit, left display index, right display index, Indicator’s measuring range.

  • Page 10: Controls - Enhanced Mode

    Auto Zero (5) To electronically set both the analog display and digital readout to zero. 2.3 Controls – Enhanced Mode Mode (1) To show the real time static measurement of the spindle in the indicator’s measuring range while in Enhanced Mode. (Sec. 4.2) When the mode button is used to activate µ...
  • Page 11 TIR (3) MAX (5) Activates the dynamic Total Indicated Activates the dynamic maximum value Reading value retention function. Displays retention function. Displays the highest or the lowest and highest points on the analog most positive measurement seen by the scale (if not exceeded) and the total reading indicated movement.

  • Page 12: Setup

    SETUP MODE µ Note: For models with the Setup Mode The Max m® III has six operator Lockout Option this mode is accessible changeable features, which are selectable with the Access Key (Order No. in the indicators Setup mode. These 2240545 –6pin, Order No.
  • Page 13 Once in the Setup mode simply press the EXITING SETUP MODE: corresponding button to toggle through the To exit Setup mode press and hold the features and choices. The ‘RESET’ button ‘RESET’ button a minimum of 3 seconds toggles thru the setup menu items and the then release the button.

  • Page 14: Changing Inch/Metric Units

    3.1 Changing inch / metric units c) Press the ‘HOLD’ button to toggle a) Enter setup mode between inch (“in”) and metric b) Press the ‘RESET’ button until the (“mm”) units. Notice the in/mm icon letter “u” indicates the Units setup will indicate the selected units on feature.

  • Page 15: Changing Measuring Direction

    3.2 Changing Measuring Direction a) Enter setup mode c) Press the ‘HOLD’ button to toggle b) Press the ‘RESET’ button until the between Normal (“n”) and Reverse letter “d” shows in the last digital (“r”) direction. Notice the tolerance position of the LCD display. The “d” arrows will also indicate the indicates the Direction setup direction change.

  • Page 16: Changing Digital Range

    3.3 Changing Digital Range a) Enter setup mode the LCD display that the digital readout b) Press the ‘RESET’ button until the will change from one measuring range letter “r” shows in the last digital to another. Only “Short Range” models position of the LCD display.

  • Page 17: Changing Digital

    3.4 Changing Digital Resolution a) Enter setup mode digit icon used for this setup b) Press the ‘RESET’ button until the feature. letter “r” shows in the last digital d) Press the ‘HOLD’ button to toggle position of the LCD display. The “r” between standard digital resolution indicates the digital Range setup and high digital resolution...

  • Page 18: Selecting Analog

    3.5 Selecting Analog Fan Scale/ Overlay Notice the fan display toggles between half full scale (only half the LCD fan segments 3.5.1 Setting-up the Indicator Analog Fan are on) and full scale (all the LCD fan Scale segments are on). This ½ fan scale and full a) Enter setup mode fan scale help the operator in deciding b) Press the ‘RESET’...
  • Page 19 3.5.2 Installing and Removing the table 3.5. The following is a recommended Overlay Scale procedure for installing and removing the Once the pushbutton settings have been µ overlay from the front of the Max m® III set, if desired, install the corresponding indicator.
  • Page 20 INSTALLATION 1) Chose the correct color and overlay 3) Slightly bend the overlay and insert scale from the table above (Table it under the front housing lip on the 3.5). Inch readout uses the green opposite side. side of the overlay and metric (mm) 4) Once the overlay is installed over uses the yellow side of the overlay.
  • Page 21 REMOVAL Note this is a recommended removal 2) Place the bottom sticking portion of the process and not necessarily the only tape onto the surface of the overlay only, method of removing the overlay. This see below. Make sure it is secure or flat. method will be least likely to cause any damage or scratching of the overlay or the 3) Simply pull-up on the tape to remove the...

  • Page 22: Selecting Data

    3.6 Selecting Data Output Format indicates the data output format a) Enter setup mode setup feature. b) Press the ‘RESET’ button until the c) Press the ‘HOLD’ button to toggle letter “o” shows in the last digital thru the following selections; position of the LCD display.

  • Page 23: Operation

    OPERATION Off-Scale Whenever the digital reading exceeds the ® µ The Max III Indicator is shipped with its analog display range, the last single analog battery installed. There is no power switch; display graduation will blink. This signals the Indicator is always “on”. However, when that the remaining digital range is still the Spindle is fully extended (“at rest”) or operational, however the analog range has...
  • Page 24 Over-Range Over-Range occurs when digital range has been exceeded. When the digital range is exceeded, the Indicator is in an “over- range” condition and is indicated by a blank display that shows both the polarity sign and the in/mm units icon. Unit is still active and not to be confused with the “Sleep”...

  • Page 25: Standard Mode

    Use a ball-point pen or similar pointed instrument to activate switches. Do not use Note: Some Mahr Federal gages are a pencil; graphite dust may affect button furnished with separate instructions switches. ®...

  • Page 26: Limits

    them outside the normally used portion of the measuring range. Note: To Save battery life, the gage setup should permit the Indicator to return to its “Sleep” mode when not in 1. Depress the spindle and press the use. Left Tolerance Limit button or press the appropriate display button to index the digital readout to...

  • Page 27: Measuring Range

    applications, the range may be offset Note: To set limits, the measuring partially or completely to either side of zero. spindle must be positioned within the analog range of the display. TO use 1. Press and release True Spindle display buttons, the Indicator must be in the measuring mode.

  • Page 28: Enhanced Mode

    4.2 ENHANCED MODE This mode operates according to the How to change between the Standard Mode ® µ and the Enhanced Mode: traditional Max Plus unit. This is the dynamic measuring mode and is indicated by a dynamic “fan” display and one solid Note: The following steps require the tolerance arrow when out of tolerance in the unit to be “on-scale”.
  • Page 29 Note: (When using this and the Spindle Position (TSP) button following functions, spindle (>2 seconds) until the two tolerance location is indicated by a single arrows disappear from the display. moving segment within the FAN display.) 4.2.2 Enhanced/Dynamic Mode The unit has to be in the Enhanced/Actual mode in order to enter into the full Maximum Reading Enhanced Mode.
  • Page 30 Reset the MAX to MIN travel. Use the reset button to clear the displayed TIR value and start a Definition: Resets the dynamic function for new TIR measurement. When TIR is reset it its next measurement. starts from the center zero reading on the indicator.

  • Page 31: Changing The Battery

    reading and will only have the “BAt” Transducer and/or output accessory indicated on it. This feature assures that cable. Alternately unscrew the two inaccurate readings will not occur due to screws that hold the battery insufficient power. compartment door in place. The screws are design to push the door Refer to “Replacement Parts”...
  • Page 32 ® µ Note: All Max III Indicators and CAUTION Indicating Units use a 3.0 volt DO NOT REMOVE THE SCREWS commercially available lithium battery. FROM THE DOOR! Do not tamper See “Replacement Parts” section of with the screw design used as this these instructions for battery part can potentially cause difficulty in numbers and ordering information.

  • Page 33: Checking Accuracy

    Note: Whenever the battery is Spindle Position button to enter removed and replaced, the Indicator the TSP mode. or Indicating Unit will lose its previous 3. Adjust the stand until the digital zero setting. readout reads exactly zero. Do not use Auto-Zero.
  • Page 34 TABLE A µ µ µ µ m® ® ® ® III Digital Gage Blocks Reading Allowable Variation Range to Use should be* in Digital Reading Model 0.101in -0.01900 0.110in -0.01000 Short Range ± 0.0199in 0.120in 0.00000 ± .00005 0.130in +0.01000 0.139in +0.01900 0.100in...
  • Page 35 TABLE A (continued) µ µ µ µ m® ® ® ® Digital Gage Blocks Reading Allowable Variation Model Range To Use Should be* in Digital Reading 1.01mm -1.990 2.00mm -1.000 Long Range ± 1.99mm 3.00mm 0.000 ± 0.014 4.00mm +1.000 4.99mm +1.990 *See Note...

  • Page 36: Calibration

    75% of the indicators full Many alternate contact points are available; scale. The Calibration Mode is selected refer to the appropriate Mahr Federal outside the Setup mode. Make sure that the Product Catalog. indicator has an on-scale reading It is recommended that wear on contacts be throughout this whole procedure.
  • Page 37 5. Remove the “Zero” gage block and 1. Put the indicator into its Standard replace it with the second gage Mode (if previously in its Enhanced block. Observe the digital readout. If Mode). necessary, use the Decrement and Increment Cal Position buttons 2.
  • Page 38 button for final zero setting against Note: For Indicators or Indicating the zero master. The indicator Units having counterclockwise display should now be in its operating mode direction, readings will have opposite and ready for measurements. signs. TABLE B Reading with Reading with Digital “Zero”...

  • Page 39: Parts & Service

    Lifting Lever EPT-1037-W1 For 8mm dia. Stem 6mm long, radiused tip, M2.5 thread EPT-1037-W2 For 8mm dia. Stem 6mm long, radiused tip, M2.5 thread-for use with Lifting Lever Many alternate Contact Points are available. Refer to Mahr Federal’s Precision Gages catalog.
  • Page 40 Indicator Parts ECS-1214 Dust Cap for Output Connector (1) 2239003 Battery Door Assembly –(complete assembly recommended for purchase) 2239034 Seal for battery door cover (1) 2239010 Battery door (1) 2239001 Screw, Battery Door (2) {requires special tool for assembly} 2239002 Speed-Nut, Battery Door (2) {requires special tool for assembly} ERG-1046...

  • Page 41: Accessories

    Long Range 0.100in/1.99mm range 2.00" special ** -Spacer Not Shown -Same as spindle W-Number(See F) 3.00" special 6.2 Accessories Description Mahr Federal Part # Remote Foot Switch EAS-2868 (10pin output models) (Hold/Reset) Remote Hand Switch EAS-2867 (10pin output models) (Hold/Reset)
  • Page 42 Description Mahr Federal Part # Overlay Kit 2239040 (includes all 3 overlays below) 5-0-5 Overlay 2239052 25-0-25 Overlay 2239053 50-0-50 2239054 Access Key (6pin output) 2240545 Access Key (10pin output) 2240547 Splash Cover ECV-1307-W1 Lug Back EBK-1006 Adjustable Slide Back...

  • Page 43: Specifications

    SPECIFICATIONS MODELS: LONG RANGE SHORT RANGE Digital Range: Standard Range ±0.100in / ±1.99mm ±0.040in / ±1.00mm Reduced Range None ±0.0199in / ±0.199mm Digital Resolution 0.0001in / 0.001mm 0.00002in / 0.0005mm (switchable^) 0.0005in / 0.005mm 0.00005in / 0.001mm 0.0001in / 0.001mm 0.0005in / 0.005mm Analog Range: 25 or 50...
  • Page 44 Special Options and Notes: Adaptor Cables -adapts DT' s to DEI Remote Integral Vertical Lugback models available as a special Indicating Units option. -for DEI with 6 pin split connector Integral Horizontal Lugback models available as a 2239080 special option. 4:5 Ratio models available as a special option.
  • Page 45 µ µ µ µ ® ® ® ® OUTPUT INFORMATION 8.1 STD Max Output µ ® The Max III comes complete with digital output for This format, consisting of a clock signal, 35 bit data communication with data collection devices. Three stream and a plus/minus signal, has allowed for µ...
  • Page 46 8.1.1 POWER INPUTS µ ® The Max III will normally run on battery. When the Pin # Signal Name Signal Name output connection is attached, a 5 volt and ground µ ® µ ® III with 6- III with 10- µ...
  • Page 47 Hardwired Bit Position Data Digit #1-All segment connected together including the period. Start pulse There is no ‘g’ segment. Digit #2-Segment b and c connected together. Segment a, d, e, f connected together. There is no ‘g’ segment. Possible Combinations Digit 1 0 or OFF Digit 2...
  • Page 48 ® µ In the Standard Mode, connecting this input to GND The Max III serial output bits 23, 24, and 25 are "X" causes the unit to enter the True Spindle mode of do not care. µ ® control. This will only occur when the unit has an on- However;...
  • Page 49 Clock Starts ~8.3ms before sign ~8.7ms before Start pulse Clock Stops ~1.8ms after last bit Sign is valid ~1.8ms after last data bit...
  • Page 50 ASCII Output 6-pin or 10pin connector and feature a SERIAL OUTPUT capability. The 10pin model also offers a This digital output is provided to allow ASCII serial byte RESET and HOLD capability. communications with other electronic devices. This is µ ®...
  • Page 51 The character strings will be in one of the following formats: ± ± ± ± 1.99mm <SP> <SP> <LF> ± ± ± ± 0.100in <SP> <SP> <LF> ± ± ± ± 1.00mm <SP> <SP> <LF> <SP> <SP> <LF> ± ± ± ± 0.040in ±...
  • Page 52 8.2.2 Operation 8.2.4 Electrical Characteristics (ASCII) The measurement update rate is 16 Hz. Therefore; a The ASCII format serial output is compatible with TTL new data value is available every 62.5 msec. The voltage levels, and it is capable of driving two standard transmission window characteristics are illustrated in TTL loads.
  • Page 53 Digimatic / BCD Output 10pin connector. The remote HOLD or UPDATE capability is not available on this output format. This method is a clocked serial BCD data stream Pinout as follows: consisting of 13 digits totaling 52 bits, emulating Mitutoyo’s format. The digital output permits the LCD displayed displacement to be transferred to an external device such as a printer, personal computer or data collection system.
  • Page 54 DIGIMATIC DATA FORMAT: b0 b1 b2 b3 b0 b1 b2 b3 b0 b1 b2 b3 b0 b1 b2 b3 d10 d11 d12 d13 M SD SIGN MEASUREMENTS UNITS ALL "F" 0 = + 0 = mm DECIMAL POINT 8 = - 8 = inch X .
  • Page 55 Clock Period 428usec BCD Transfer Time For 4 bits / digit is: 2.14msec Reading Transfer Time For 13 digits / reading is: 27.8msec Reading Transfer Rate 16 Readings / second EXAMPLES OF BCD ENCODED DATA FORMAT EXAMPLE: + 1 . 2 3 4 5 mm d10 d11 d12 d13 EXAMPLE: - 0 .
  • Page 56 PARAMETER PIN # TEST CONDITION MAX RATINGS UNITS input Vi(max) output 2, 3 Vo(max) I(max) INPUT TYPE OUTPUT TYPE 8.4 Mating Connectors i(max) Connector Mahr Federal Part # Vo(max) open drain 6-pin ECN-1521 output 10-pin ECN-1689 Vi(max) SCLK SDAT SREQ...
  • Page 57 9.0 Quick Setup Flowchart...
  • Page 58 Mahr Federal Inc. • 1144 Eddy Street • Providence, RI • Phone: 401/784-3100 • Fax: 401/784-3246 2239028 Rev. A (6/2004)

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