User's Manual ND 221B (SW 349 797-01)
Contents
1. Linear Encoders od Reference Millimeters Inches g marks Display Display a top 5 noe 5 E in mm 3 E 5 9 IB 5 s aa OE 5 ELPA P33 P38 P33 P38 LS 106 106C 20 Single 1000 0 001 1 3 0 00005 5 5 LS 406 406C 0 0005 5 4 0 00002 2 5 LS 706 706C ST 1201 LB 302 302C 40 Single 2000 0 005 5 3 0 0002 2 4 LIDA 10x 10xC 0 002 2 3 0 0001 1 4 0 001 1 3 0 00005 5 5 0 0005 5 4 0 00002 2 5 Recommd only for LB 302 0 0002 2 4 0 000001 1 5 0 0001 1 4 0 0000005 5 6 LB 301 301C 100 Single 1000 0 005 5 3 0 0002 2 4 0 002 2 3 0 0001 1 4 0 001 1 3 0 00005 5 5 LIM 102 12800 Single 0 1 1 1 0 005 5 3 0 05 5 2 0 002 2 3 Example Your encoder MT 101 Desired display step 0 0005 mm 0 5 um Parameter settings P01 mm P43 single P31 10 P33 5 P38 4 Nonlinear Axis Error Compensation 22 Nonlinear Axis Error Compensation If you want to use the nonlinear axis error compensation feature you must e Activate the feature with operating parameter 40 see Operating Parameters e Traverse the reference marks after switching on the display unit e Enter a compensation value table Your machine may have a nonlinear axis error due to factors such as axis sag or leadscrew errors Such deviations are usually measured with a comparator measuring system such as the HEIDENHAIN VM 101 You select the compensation table through P00 CODE and by entering the code number 12. L EN 2 Alternatives of stacking the display units Power Connection The rear panel of the ND 221 B contains a connecting jack for a power cord with Euro connector power cord supplied with the delivery Minimum cross section of the power cord 0 75 mm Power supply 100 Vac to 240 Vac 15 to 10 50 Hz to 60 Hz 2 Hz A voltage selector is therefore not necessary Unplug the power cord before opening the housing Connect the grounding conductor Do not interrupt the grounding conductor Danger of electrical shock Do not engage or disengage any connections while the unit is under power Use only original replacement fuses Danger to internal components To increase noise immunity connect the ground terminal on the rear panel to the central ground point of the machine Minimum cross section 6 mm Power Connection 13 Operating Parameters 14 Operating Parameters Operating parameters allow you to modify the operating characteristics of your ND display unit and define the evaluation of the encoder signals Operating parameters are designated by e the letter P a two digit parameter number and e an abbreviation Example PO1 INCH The factory settings of the operating parameters are indicated in the parameter list see List of Operating Parameters in boldface type Parameters consist of user parameters and protected operating parameters
3. Functions for changing the operating parameters Function Page forward in the list of operating parameters ey Page backward in the list of operating parameters Reduce parameter value Increase parameter value Correct entry and display parameter designations Confirm change or numerical entry leave list of operating parameters changed parameter is stored as soon as you leave the list of operating parameters or e page forward or backward after the change Operating Parameters 15 List of Operating Parameters 16 List of Operating Parameters Parameter Settings Function Parameter Settings Function 00 CODE To change the protected operating param P38 DP POS Decimal places 1 eters enter code number 95 148 1 2 3 4 5 6 P01 Units of measurement up t08 Tor Ifcrn display Display in millimeters MM P40 COMP Select encoder compensation Display in inches C No compensation COMP OFF P11 SCL Scaling factor 2 gt to 64 compensation points for Scaling factor off SCALING OFF ISSUES BOB GOME Scaling factor on SCALING ON Linear compensation COMP ON P12 SCL Scaling factor P41 L COMP Linear error compensation Enter a numerical value 99 999 9 P41 99 999 9 um m 0 100000 P12 9 999999 Default setting 0 Default setting 1 000000 Example Find input value for P41 P30 DIR Counting direction Displayed measuring length
4. L4 620 000 mm Positive counting direction with Actual length measured e g positive direction of traverse DIRECT Pos with the VM 101 comparator EET system from HEIDENHAIN L 619 877 mm Negative counting direction with Length difference AL La 123 um positive direction of traverse DIRECT NEG f Compensation factor k P41 P31 S PER Signal period of encoder k AL L 123 0 62 m k 198 4 um m 0 000 000 01 P31 99 999 9999 um Default setting 10 um 1 Depends on signal period P31 and measuring unit PO1 P33 COUNT Counting mode 0 1 2 3 4 5 6 7 8 9 COUNT 0 1 0 2 4 6 8 COUNT 0 2 0 5 COUNT 0 5 Parameter P51 RS232 Settings Function Additional blank lines during data output 0 lt P51 lt 99 Default setting 1 BK LINE 1 P79 PRESET Value for datum point Enter numerical value for datum setting with ENT key 80 ENT CL Set display No set Set with CL ENT CL ENT OFF Zero reset with CL Setting disabled with ENT ON Zero reset with CL and set with ENT to value selected in P79 CL ENT ON P82 DISPL ON Message after switch on ENT CL message MESSAGE ON Parameter Settings Function P43 REF Reference marks One reference mark SINGLE REF Distance coded with 500 SP SP signal period 500 SP Distance coded with 1000 e SP
5. Simplified wiring Pin layout RS 232 C V 24 X31 Data format and control characters CR carriage return Pin Signal Assignment Data format 1 start bit 7 data bits 1 CHASSIS GND Chassis ground Even parity bit 2 TXD Transmitted data 2 stop bits 3 RXD Received data Control characters Call measured value STX Ctrl B Interrupt DC3 Ctrl S 4 RTS Request to send S Continue DC1 Ctrl O 5 CTS Clear to send Interrogate error message ENO Ctrl E 6 DSR Data set ready Example Data sequence during measured value output 7 SIGN GND Signal ground Measured value s 523 mm 81019 Not assigned D inal 20 DTR ata terminal ready Measured value 211025 Not assigned 28 2h S 0 Q Levels for TXD and RXD D Algebraic sign z Q Numerical value with decimal point 10 characters on Logic level Voltage level the whole leading zeros are output as blank spaces Active 3V1to 15V 3 Blank space Unit Not active 3V to 15V Blank space mm inch fault Blank space Levels for RTS CTS DSR and DTR 6 Blank space 7 8 Logic level Voltage level Active 3Vto4 15V Not active 3Vto 15V LF ine feed RS 232 C V 24 Data Interface X31 27 RS 232 C V 24 Data Interface X31 28 Operating parameters for measured value output Parameter Function P50 RS232 Baud rate P51 RS232 Number of additional blank lines for
6. e g for HEIDENHAIN LS C 1000 SP Distance coded with 2000 e SP 2000 SP Distance coded with 5000 e SP 5000 SP P44 REF Reference mark evaluation Evaluate the reference mark REF ON Do not evaluate the reference mark REF OFF P45 ALARM Encoder monitoring No monitoring ALARM OFF Monitor the frequency FREQUENCY Monitor contamination CONTAMINAT Contamination frequency FRQ CONT P50 RS232 Baud rate 110 150 300 600 1200 2 400 4 800 9 600 19 200 38 400 baud P86 MOD No message MESSG OFF PRINT via MOD disabled PRINT OFF PRINT via MOD enabled PRINT ON List of Operating Parameters 17 List of Operating Parameters 18 Parameter P98 LANGUA German English French talian Dutch Spanish Danish Swedish Finnish Czech Polish Hungarian Portuguese Settings Function Conversational language LANGUAGE D LANGUAGE GB LANGUAGE F LANGUAGE I LANGUAGE NL LANGUAGE E LANGUAGE DK LANGUAGE S LANGUAGE FI LANGUAGE CZ LANGUAGE PL LANGUAGE H LANGUAGE P Linear Encoders The ND 221 B display unit is designed for use together with photoelectrical encoders with sinusoidal signals 1 1 p App Display step with linear encoders You can select a specific display step by adapting the following operating parameters e Subdivision P31 Counting mode P33 Decimal places P38 Example Linear encoder with a signal period of 10 um Desired display step 0 000 5 m
7. measured value output Duration of measured value transfer ip 187 11 number of blank lines sj baud rate Duration of storage and measured value transfer The time required for data transfer depends on the selected baud rate and the number of additional blank lines Latch signal Storage Data transfer after after STX CTRL B lt 1 ms 37 ms PRINT MOD key lt 18 ms 36 ms Locking the Keypad You can disable or re enable the keypad by entering the code number 24 65 84 gt Select the user parameter POO CODE see Operating Parameters Enter the code number 24 65 84 gt Confirm the entry with ENT gt With the e or key select KEYS KEYS OFF gt Confirm your selection with ENT If the keypad is locked you can only select the datum or select POO CODE over the MOD key Displaying the Software Version 30 Displaying the Software Version To display the software version of the display unit enter the code number 66 55 44 gt Select the user parameter POO CODE gt Enter the code number 66 55 44 gt Confirm your entry with ENT gt The display unit shows the software number With the key you can switch the display to the date of issue gt To exit the software version display mode press ENT Distance to Go Display Mode Normally the display shows the actual position of the en coder However it is often more helpful to display the re
8. in mm in inches 6 064 0023 7 128 0050 8 256 0100 9 512 0200 0 1 024 0403 1 2 048 0806 2 4 016 21581 3 8 192 3225 4 16 384 6450 5 32 768 1 290 6 65 536 2 580 7 131 072 5 160 8 262 144 10 32 9 524 288 20 64 20 1048 576 41 25 Nonlinear Axis Error Compensation 23 Nonlinear Axis Error Compensation 24 Selecting the compensation table entering an axis correction together Select the operating parameters a C Select POO CODE 1 CODE 1 Enter the code number 10 52 96 confirm with ENT EG Ne gt C DATUM shown for approx two seconds M Enter the active datum for the error on the axis to be confirmed e g 27 mm Press MOD to select the next input box Cu spacine 4 x mg Enter the spacing of the compensation points on the axis to be corrected for example gre um equals 1 024 mm Press MOD four times to select COMP NR 01 You cannot enter values in the POS NR 00 COMP NR 00 and POS NR 01 boxes 01 2 Enter the associated compensation value e g 0 01 mm Press MOD twice to select COMP NR 02 You cannot enter any values in the POS NR 02 box COMP NR 02 Enter all further compensation points If you want so select a compensation point directly
9. press CL and simultaneously enter the desired compensation point number ENT Conclude entry Deleting a compensation value table together Select the operating parameters CL with M mm Select POO CODE Enter the code number 10 52 96 confirm with ENT Select the delete function Confirm with ENT or cancel with CL Exit the compensation table mode Nonlinear Axis Error Compensation 25 RS 232 C V 24 Data Interface X31 26 RS 232 C V 24 Data Interface X31 The RS 232 C V 24 interface X31 of your display unit enables you to output measured data in ASCII format for example to a printer or PC Connecting cable You can use a connecting cable with full wiring figure at upper right or simplified wiring below right A cable with full wiring is available from HEIDENHAIN Id Nr 274 545 On this type of cable pin 6 and pin 8 are additionally connected over a jumper Maximum cable length 20 m 66 ft ND CHASSIS GND 10 1 CHASSIS GND TXD 2 2 TXD RXD 222 3 RXD RIS 4 4 RTS CTS P a 5 CTS DSR 6 6 DSR SIGNAL GND 70 7 SIGNAL GND DTR 20 20 DTR Full wiring ND CHASSIS GND 1 O 1 CHASSIS GND TXD dide 2 TXD RXD 3 3 RXD RTS 40 e 1 RTS cis 50 e 5 CTS DSR 60 e DSR SIGNAL GND 7 O 41 7 SIGNAL GND DTR 20 O e 20 DTR
10. which can only be accessed by entering a code number User parameters User parameters are operating parameters that can be changed without entering the code number to P30 P50 P51 P79 P86 P98 The functions of the individual user parameters are detailed in the list of operating parameters see List of Operating Parameters To access a user parameter after switching on the display While ENT CL is displayed Display first user parameter MOD during operation Together To go directly to a user parameter Display first user parameter C N Together Press and hold CL while entering the first digit of the parameter number here 1 N Enter the second digit of the parameter number here 2 The display shows the selected user parameter Code number for changing protected operating parameters If you wish to change protected operating parameters you must first enter the code number 95 148 gt Select the user parameter POO CODE gt Enter the code number 95 148 Confirm entry with ENT Parameter P30 appears on the display By paging through the list of operating parameters you can display and if necessary change each protected operating parameter of course each user parameter Once you have entered the code number the protected operating parameters remain accessible until the display unit is switched off
11. 0 52 96 see Operating Parameters Ascertaining the compensation values To ascertain the compensation values e g with a VM 101 you must select the compensation table and then press the key to select the REF display The letter R at the left of the display indicates that the displayed position value is given with respect to the reference mark If R blinks you must traverse the reference mark Entries in the compensation value table Datum Here you enter the point at which the compensation is to begin This point indicates the absolute distance to the reference point Do not change the datum after measuring the axis error and before entering the axis error into the compensation table Spacing of the compensation points The spacing of the compensation points is expressed as Spacing 2 um Enter the value of the exponent x in into the compensation value table Minimum input value Maximum input value 6 2 0 064 mm 20 2 1048 576 mm Example 900 mm traverse with 15 compensation points gt 60 000 mm spacing between points Nearest power of two 219 65 536 mm see Table for determining the point spacing Input value in the table 16 Compensation value You enter the measured compensation value in milli meters for the displayed compensation point Compensa tion point O always has the value 0 and cannot be changed Table for determining the point spacing Exponent Point spacing
12. J 1864 HEIDENHAIN User s Manual 221 Measured Value Displays 6 2000 Display of actual value and input Numeric keypad 9 decades with algebraic sign with decimal point Status display with indicators Key Function e Set datum Transfer input value Set display to value from P79 P80 e Leave parameter list y Select datum e Page backwards in parameter list Select parameter after switch on Page forward in parameter list MOD e Start measured value output PRINT E Delete entry Set display to zero P80 CL plus MOD select parameter list CL plus number select parameter Delete parameter input and show parameter number Algebraic sign Reduce parameter value e Decimal point Increase parameter value Indicator Meaning REF If the decimal point is also blinking Display is waiting for reference mark traversing If decimal point is not blinking Reference mark has been traversed display stores datum points in nonvolatile memory Blinking display is waiting for ENT or CL to be depressed inch Position values in inches La Selected datum point PRINT Measured value output with MOD key SET Blinking Display is waiting for input values lt gt Without function MIN MAX DIFF ACTL START Items supplied with ND 221 B Measured value display unit ND 221B benc
13. Once you have removed the cause of the error gt Clear the error message with the CL key Rear Panel Ports X1 and X31 comply with the recommendations in EN 50 178 for separation from line power Data interface X31 V 24 RS 232 C Encoder input X1 100 240V 50 60 HEIDENHAIN flange socket 9 pin Input signals N 11 Maximum encoder cable length 30 m 98 5ft Maximum input frequency 100 kHz sped RS 232 C V 24 data interface X31 25 pin D sub connection female Accessories Connecting elements Connector male 25 for D sub connection X31 Id Nr 245 739 ZY Data interface cable complete 3 m 9 9 ft 25 pin for D sub con nection X31 Id Nr 274 545 01 Input X1 for one HEIDENHAIN 11 pA linear encoder Ground connection Rear Panel Accessories 11 Mounting 12 Mounting You can fasten the ND 221 B from below by using M4 screws see illustration at right ND 221 B display units are stackable Adhesive plug in feet supplied with your unit prevent the stacked units from being moved out of place 172 0 2 6 77 x 008 140 0 2 5 51 008 Hole positions for mounting the ND display unit 7 J
14. ength Display step Adjustable see Linear Encoders Datum points Two Power consumption 8 W typically Electromagnetic compatibility Class B according to EN 55022 RS 232 C V 24 interface Baud rates 110 150 300 600 1 200 2 400 4 800 9 600 19 200 38 400 baud ND 221 B Dimensions in mm inches 84 6 3 33 1 6 24 BI Li T 1 1 REFL1 L2 SET START PRINT inch lt gt MIN ACIL MAX DIFF x 24 335 E 172 0 2 137 6 77 008 10 60 DA 239 9 41 15 Y 1 48 eo Se 55 OO N Specifications 33 HEIDENHAIN DR JOHANNES HEIDENHAIN GmbH Dr Johannes Heidenhain Stra f e 5 83301 Traunreut Germany 449 86 69 31 0 FAX 49 86 69 50 61 e mail info heidenhain de Service 49 86 69 31 1272 lt TNC Service 49 86 69 31 1446 FAX 49 86 69 98 99 e mail service heidenhain de http www heidenhain de HEIDENHAIN G B Limited 200 London Road Burgess Hill West Sussex RH15 9RD Great Britain 01444 247711 FAX 01444 870024 350 273 21 SW 349 797 01 10 6 2000 E Printed in Germany Subject to change without notice
15. htop model Encoder input 11 Id Nr 344 992 Power cord 3 m 9 9ft User s Manual ND 221 B Adhesive plug in feet For stacking ND 221B units This manual is for the ND 221 B measured value display with the following software number or higher 349 797 01 The software number is indicated on a label on the rear panel Contents Working with the ND Display Units Position Encoders and Reference Marks 6 Switch On Traversing Reference Marks 7 Datum Setting 8 Measured Value Output 9 Error Messages 10 Installation and Specifications Rear Panel Accessories 11 Mounting 12 Power Connection 13 Operating Parameters 14 List of Operating Parameters 16 Linear Encoders 19 Nonlinear Axis Error Compensation 22 RS 232 C V 24 Interface X31 26 Locking the Keypad 29 Displaying the Software Version 30 Distance to Go Mode 31 Specifications 32 Dimensions 33 Position Encoders and Reference Marks The ND 221 B display unit is designed for use with photoelectrical linear encoders with 11 sinusoidal signals primarily for HEIDENHAIN MT length gauges with 11 p App The MT length gauges have one reference mark The scales of other photoelectric linear encoders see Linear Encoders can contain one reference mark or many distance coded reference marks If there is an interruption of power the relationship between the position of the length gauge and the dis
16. m Subdivision P31 10 Counting mode P33 5 Decimal places P389 4 The tables on the following pages will help you to select the appropriate parameter settings Linear Encoders 19 Linear Encoders Recommended parameter settings for HEIDENHAIN linear encoders with 11 pA signals Model 2 Reference Millimeters Inches 9 marks Display Display ER ERE IE ES in mm ENS o9 in inches 5 o SE Sg o 9 o aa a Eja P 43 P33 P38 P P CT 2 Single 0 0005 5 4 0 00002 2 5 MT xx01 0 0002 2 4 0 00001 1 5 LIP 401A 401R Single 0 0001 1 4 0 000005 5 6 0 00005 5 5 0 000002 2 6 Recomma only for LIP 401 0 00002 2 5 0 000001 1 6 0 00001 1 5 0 0000005 5 7 0 000005 5 6 0 0000002 2 7 LF 103 103C 4 Single 5000 0 001 1 3 0 00005 5 5 LF 401 401C 0 0005 5 4 0 00002 2 5 LIF 101 101C 0 0002 2 4 0 00001 1 5 LIP 501 501C 0 0001 1 4 0 000005 5 6 LIP 101 Single 0 00005 5 5 0 000002 2 6 Recomma only for LIP 101 0 00002 2 5 0 000001 1 6 0 00001 1 5 0 0000005 5 7 10 Single 0 0005 5 4 0 00002 2 5 0 0002 2 4 0 00001 1 5 0 0001 1 4 0 000005 5 6 LS 303 303C 20 Single 1000 0 01 1 2 0 0005 5 4 5 603 603 0 005 5 3 0 0002 2 4 Recommd parameter settings for HEIDENHAIN linear encoders with 11 pA signals continued
17. maining distance to an entered nominal position especially when you are using the display unit for machine tools and au tomation purposes You can then position simply by traversing to display value zero You can access the distance to go display by entering the code number 246 582 Display Meaning DELTA OFF Distance to go display not active DELTA ON Distance to go display active Traversing to zero with distance to go display Select datum point 2 gt Enter the nominal position gt Move the axis until the display value is zero Distance to Go Mode 31 Specifications 32 Specifications Housing ND 221 B Benchtop design cast metal housing W e H e D 239 mm 84 6 mm 224 mm Operating temperature 0 to 45 C 32 to 113 F Storage temperature Weight 20 C to 70 4 F to 158 F Approx 1 5 kg Relative humidity lt 75 annual average lt 90 in rare cases Power supply Line fuse Primary clocked power supply 100 Vac to 240 Vac 15 to 10 50 Hz to 60 Hz 2 Hz F 1 A inside the housing Noise immunity As per VDE 0843 Parts 2 and 4 severity 4 Protection 40 according to IEC 529 Encoder inputs For encoders with sinusoidal output signals 11 App reference mark evaluation for distance coded and single reference marks Input frequency ND 221B 100 kHz for 30 m cable l
18. ow ready for operation 2 REF Mode Crossing over the reference marks automatically switches the display to REF mode The last assignment of display values to length gauge positions is stored in nonvolatile memory 1 Press the CL key if you choose not to traverse the reference marks Note that in this case the relationship between length gauge position and display value will be lost if the power is interrupted or if the unit is switched off Datum Setting The datum setting procedure assigns a display value to a known position With the ND 200 series you can set two separate datum points 2 There are several ways to set the datum Enter a numerical value 2 Transfer a value from an operating parameter see P79 80 2 t g Select datum 1 or 2 Without datum setting unknown assignment of measured values to positions Enter numerical value here 5 5 Z Confirm the entered numerical value em You switch between datums 1 and 2 as desired Datum 2 15 can be used for example for working with incremental 10 dimensions 5 When you switch back to datum 1 the display unit resumes 0 display of the encoder s actual position After datum setting assignment of measured values to positions Measured Value Output For technical information on the RS 232 C V 24 data interface X31 information on the data format e
19. played position value is lost The reference marks on the position encoders and the REF reference mark evaluation feature enable the display unit to quickly reestablish this relationship again when the power is restored When a reference mark is crossed over a signal is generated which identifies that position as a reference point At the same time the display unit restores the relationship between length gauge position and display values which you last defined by setting the datum To restore the datum on scales with distance coded reference marks you only need to traverse a maximum of 20 mm signal period 20 um Scale in linear encoder Reference mark Distance coded reference marks Reference marks on linear encoders Switch On Traversing the Reference Marks Turn on the power Switch located on rear panel ND 221 B appears for two seconds ENT CL appears REF indicator is blinking Switch on the reference mark evaluation function position value that was last assigned to the reference mark position is displayed REF indicator lights up Decimal point is blinking 5 697 2 Ta For automation purposes crossing over the reference marks and the display ENT CL can be disabled with parameter P82 Cross over the reference mark Move the plunger until the display starts counting and the decimal point stops blinking The display is n
20. tc see the chapter RS 232 C V 24 Interface X31 Measured values can be output over the RS 232 C V 24 interface X31 for example to a printer or PC There are several ways to start measured value output gt Press the MOD key check the parameter settings for P86 or gt Input the command STX Ctrl B over the RXD input of the RS 232 C V 24 interface X31 The RS 232 C V 24 interface X31 enables you to connect a printer or a PC to your display unit Error Messages Display Effect Cause RS232 FAST Command for measured value output followed too quickly by another 1 SIGNAL Encoder signal is too weak The scale may be contaminated 1 DSR MISSING The connected device has not sent a DSR signal 1 REF ERR The spacing of the reference marks as defined in P43 is not the actual spacing 7 FORMAT ERR Data format baud rate etc do not match 7 FREQUENCY Input frequency too high for encoder input Traversing speed may be too fast 1 MEMORY ERR Checksum error Check the datum operating parameters and com pensation values for nonlinear axis error compensation If this error recurs contact your service agency 1 These errors are important for the attached device Other error displays If OVERFLOW appears the measured value is too large or too small Set anew datum or Traverse back To clear error messages
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