1 Service Manual TNC 36/36 1/ Kundendienst/Service
2 Contents Service Manual TNC 36/36 How to use this Service Manual Minor Error Messages Major Error Messages and their Causes Hardware Components TNC 36/36 Logic Unit LE 36/C Connector Designation and Pin Layout Grounding Diagram Power Supply Keyboard Unit TE 355 A/B Visual Display Units for TNC 36/36 Encoders Handwheel HR 13/33 3DTouch Probe Systems RS232C/V.24 Data Interface External Data Transfer Analog Outputs PLC Inputs and Outputs Test Units Exchange instructions Machine Parameters
3 SERVICE MANUAL TNC 36/36 Page 1 Table of Contents 1. How to use this Service Manual Minor Error Messages Causes of Minor Error Messages Major Error Messages and their Causes... 6 Page 4. Hardware Components TNC 36/ LOGIC UNIT LE 36/C Designation of the LOGIC UNIT LE 36/C Hardware Components of the LOGIC UNIT LE 36/C Connector Designation and Pin Layout Connectors on the LOGIC UNIT LE 36/C Connectors on the PLC I/O Board Connectors on the Keyboard Units TE 355 A/B Connectors on the Visual Display Units Grounding Diagram Power Supply External Power Supply Requirements Power Supply of the Visual Display Units Power Supply of the NC Part Checking the Power Supply (Power Supply Unit) Power Supply of the PLC Buffer Battery Keyboard Unit TE 355 A/B Overview Checking the Keyboard Unit Visual Display Units for TNC 36/ Visual Display Unit BE Flat Luminescent Screen BF Encoders Error Messages Error Causes Checking the Encoders Handwheel HR 13/ Overview Checking the Handwheel HR 13/ Error Messages... 48
4 SERVICE MANUAL TNC 36/36 Page 2 Page 13. 3DTouch Probe Systems Overview Error Messages RS232C/V.24 Data Interface Operating Modes ME FE EXT Interface Configuration Connecting Cables and Adaptors for the RS232C/V.24 Data Interface Machine Parameters for the RS232C/V.24 Interface Printer Connection Error Messages External Data Transfer External Data Input External Data Output Analog Outputs Specifications Checking the Analog Outputs Switching Over the Position Display Feed Adjustment Offset Adjustment PLC Inputs and Outputs Specifications Checking the PLC Inputs and Outputs Further Diagnosis Possibilities in the PLC Mode Output "Control Ready for Operation" and Acknowledgement for Test "Control Ready for Operation" TEST UNITS Test Load Unit PLC Test Unit PL Test Unit Measuring Adapter Encoder Diagnostic Set Exchange Instructions General Remarks Exchanging the LOGIC UNIT Exchanging the PROCESSOR BOARD Exchanging the PLC Board Exchanging the "Power Supply" Assembly Exchanging the PLC I/O Board PL Exchanging EPROMs Machine Parameters... 13
5 SERVICE MANUAL TNC 36/36 Page 3 1. How to use this Service Manual The service manual TNC 36/36 can be used to diagnose, locate and eliminate errors on machine tools controlled by TNC. In order to correctly judge the problems in an NCcontrolled machine tool, fundamental knowledge of the machine tool and its drives, as well as their interaction with the control and the measuring systems is required. Incorrect behaviour of the machine tool can also result from improper use of the control, NCprogramming errors and incorrect or not properly optimized machine parameters. For further information in this respect please refer to the.documentation of the Machine Tool Manufacturer, to the.operating Manual (HEIDENHAIN) and to the.technical Manual (HEIDENHAIN). The manual for the machine tool manufacturer is not enclosed with every control as is the operating manual. In general, it is only supplied to the machine tool manufacturer and is updated by HEIDENHAIN, Traunreut. Therefore, it is absolutely necessary to contact the machine tool manufacturer if errors occur that are due to a machine parameter or to the interface of the control. Support will, however, also be provided by the service department of HEIDENHAIN, Traunreut, and HEIDENHAIN agencies. Telephone numbers, addresses and telex/telefax numbers can be found on the back side of the cover page and on the back side of this service manual.
6 SERVICE MANUAL TNC 36/36 Page 4 2. Minor Error Messages The TNC 36/36 features a comprehensive integrated monitoring system to avoid input or operation errors, to locate errors and technical defects of the entire equimpent (TNC, measuring system, machine tool, cables etc). The monitoring system is a fixed component of the TNC hardware and software; it is always active when the control is switched on. If a technical defect or an operation error is detected, an error message in plain language is displayed on the screen. To erase minor error messages, press CE. Further error messages are described in the Operating Manual TNC 36 and TNC 36, in the Technical Manual, in the Documentation by the machine tool manufacturer or in the Operating Instructions FE 41 B. Error Message Sec. Error Message Sec. AXIS DOUBLE PROGRAMMED 13.2 ERR: START POSITION INCORRECT 13.2 ERR: TOUCH POINT INACCESSIBLE 13.2 ERR: RANGE EXCEEDED 13.2 ERR: OPERATING PARAMETER ERASED 2.1 EMERGENCY STOP 17.4 CYCLPARAMETER INCORRECT 13.2 EXT. IN/OUTPUT NOT READY 14.6 FAULTY RANGE DATA 13.2 WRONG AXIS PROGRAMMED 13.2 ROTATION NOT PERMITTED 13.2 WRONG PROGRAM DATA 14.6 PLANE WRONGLY DEFINED 13.2 SCALING FACTOR NOT PERMITTED 13.2 ENTRY VALUE INCORRECT 14 PLC: PROGRAM MEMORY ERASED 15.1 LIMIT SWITCH <Axis> 2.1 POSITIONING ERROR <AXIS> 2.1 ERR: PROGRAM MEMORY EXCEEDED 15.1 ERR: EXCHANGE BUFFER BATTERY 8.6 ERR: MIRRORING NOT PERMITTED 13.2 ERR: RELAY EXT. DC VOLTAGE MISSING 17.4 ERR: POWER INTERRUPTED 2.1 ERR: EXCHANGE TOUCH PROBE BATTERY 13.2 ERR: STYLUS ALREADY IN CONTACT 13.2 ERR: PROBE SYSTEM NOT READY 13.2 ERR: TRANSFERRED VALUE ERRONEOUS 14.6 ERR: TIME LIMIT EXCEEDED 13.2 ERR: ERR:
7 SERVICE MANUAL TNC 36/36 Page Causes of Minor Error Messages OPERATING PARAMETERS ERASED With new and exchange controls, the machine parameters are always erased. Software replaced with different version (see section. 15.1) Buffer batteries and accumulator defective RAM error on PROCESSOR board LIMIT SWITCH <AXIS> "Manual" operating mode: The predetermined software limit switch or the additional limit in the auxiliary operating modes has been reached during traverse with the direction keys. "Automatic" operating mode: The calculated position of the current block is beyond the software limit switch range or beyond the additional limit. No positioning takes place. Machine Parameters for Software Limit Switches Default setting Selection via M2816, M2817 Selection via M2816, M2817 Default setting Selection via M2816, M2817 Selection via M2816, M2817 X+ X Y+ Y Z+ Z IV+ IV POWER INTERRUPTED After a reset signal at the power supply (e.g. line voltage drops) Important machine parameters may have been altered, e.g. MP 1, MP 21, MP 139, MP 41, MP 721 etc. For further causes see section 15.1 and 17.4 POSITIONING ERROR <AXIS> The position monitoring system set in the machine parameters 141 or 171 has responded. (Check the approach behaviour of the axis and readjust, if necessary.) EMERGENCY STOP The EMERGENCY STOP loop has been interrupted (see section 17.4). The PLC editor program has been translated
8 SERVICE MANUAL TNC 36/36 Page 6 3. Major Error Messages and their Causes The integrated monitoring system distinguishes between minor and major errors; major error messages (e.g. malfunctions of the encoders, of the drives or data processing errors) blink. In the case of gross errors, the control opens the contact "Control Ready for Operation" which causes an emergency stop of the machine tool. By switching off the main switch or pressing, the "emergency stop" state can be reset, provided that the error cause has been eliminated. END Screen Display (blinking error message) Error Cause PROCESSOR CHECK ERROR XX XX = 8 C C C C C 6 647C 94BC Bus error Address errror Illegal instruction Division by Error output for CHK command (check range) Error output for TRAPV command (trap on overflow) Privilege infringement (supervisor command in the usermode) Emulator trap Emulator trap Interrupt vector not initialized Interrupt vector not initialized Interrupt vector not initialized Interrupt vector not initialized False interrupt (interrupt with priority ) Interrupt autovector 47, user Interrupt. $1$3FC If the error message "PROCESSOR CHECK ERROR XX" (XX = identification letters, see above) comes up repeatedly, please return the complete logic unit to HEIDENHAIN for repair. Indicate also the error message and the identification letters. Notes
9 SERVICE MANUAL TNC 36/36 Page 7 Screen Display (blinking error message) Error Cause PROCESSOR CHECK ERROR X X = A B C D E F H L M P R CRC sum control data incorrect CRC sum machine parameter incorrect Check sum of NC memory incorrect Test plane incomplete Crosstalk between data bits in the RAM Crosstalk between addresses in the RAM Stack overflow CRC sum PLC program ASCII CRC sum PLC program Opcode Software error main processor Software error display task Time slice overflow Command stack overflow control loop Wrong command MAIN PROCESSOR TASK CONTROL LOOP TASK Wrong display mode MAIN PROCESSIR TASK DISPLAY TASK Control loop: "counter not latched" Wrong control loop command Operating voltage out of tolerance Disabled software function is activated PLC Positioning, datum shift (PLC), spindle orientation or limit switch shift active with MP744 bit 2 = 1 or MP33 = 1 If the error message "PROCESSOR CHECK ERROR XX" (X= identification letter, see above!) comes up repeatedly, please return the complete logic unit to HEIDENHAIN for repair. Indicate also the error message and the identification letters. Notes
10 SERVICE MANUAL TNC 36/36 Page 8 Screen Display (blinking error message) Error Cause ERROR IN PLC PROGRAM XX XX = 1A 1B 1C 1D 1E 1F 1G 1H 1I 1J 1K 1L 1M 1N 1O 1P 1Q XX = 2A 2B 2C 2D 2E 2F 2G 2H 2K 2L 2O NC start Rapid traverse Ref. pulse latch Feed enable PLCPos X 1) PLCPos Y 1) PLCPos Z 1) PLCPos IV 1) X+ X Y+ Y Z+ Z IV+ IV Marker M2485 Marker M2486 Marker M of 3 set SM X+ SM X SM Y+ SM Y SM Z+ SM Z SM IV+ SM IV (reserved) (reserved) (reserved) complement missing complement missing complement missing complement missing complement missing complement missing complement missing complement missing complement missing complement missing complement missing complement missing complement missing complement missing complement missing (M3) (M4) (M5) complement missing complement missing complement missing complement missing complement missing complement missing complement missing Excessive nesting of subroutines Stack underflow Stack overflow Time out PLC CASE arguments are larger than the table values Note 1) Only active with compatibility mode TNC 355
11 SERVICE MANUAL TNC 36/36 Page 8.1 Display (blinking) Error Cause ERROR IN PLCPROGRAM X X = 7 Called label has not been defined. 8 9 No endprogram conditin found (the program does not contain an EM instruction or it contains a JP instruction without a following LBL instruction) Program is too long (RAM overflow) (insufficient memory for the program code which is to be generated) ERROR IN PLCPROGRAM XX XX = 1 Assign with parenthesis (an =, S, SN, RN, or PS instruction has been programmed, although arithmetic parentheses are open) Excessive nesting of parentheses (more than 16 parentheses are open) Jump within a gating sequence (unconditional jump has been programmed, although the gating sequence was not closed with an Assign) "Close Parentheses" without "Open Parentheses" (a "Close Parentheses" command was programmed although no parentheses were open) Label within parentheses (a LBL instruction has been programmed, although parentheses are open) Label within a gating sequence (a LBL instruction has been programmed, although the previous gating was not closed with an Assign) Jump within parentheses (a jump instruction has been programmed, although parentheses are open) Parentheses are open at end of block (an EM instruction has been programmed, although parentheses are open) Label defined twice Word Assign missing (a Logic instruction has been programmed. although the previous Wordgating was not closed with an Assign) Logic Assign missing (a Word instruction has been programmed, although the previous Logicgating was not closed with an Assign) Word accumulator not loaded (a Word Assign or gating has been programmed, although the Logic accumulator does not contain a definite value) Logic accumulator not loaded (a Logic Assign has been programmed, although the Logic accumulator does not contain a definite value)
12 SERVICE MANUAL TNC 36/36 Page 8.2 Display (blinking) Error Cause ERROR IN PLCPROGRAM XX XX = 23 Accumulators not loaded on "Open Paren (continued) theses" (an A[, AN[, O[, ON[ or XON[ command has been programmed, although neither the Word nor the Logic accumulator has been gated or loaded) Incorrect type of the parentheses result (a different type has been calculated in the parentheses from that which was defined at the "Open Parentheses" command, i.e. Logic instead of Word or vice versa) Conditional jump with incorrect Logic accumulator (a conditional jump has been programmed, although the Logic accumulator does not contain a definite value) Empty CASEinstruction "ENDCASE" missing Notes
13 SERVICE MANUAL TNC 36/36 Page 9 Screen Display (blinking error message) Error Cause GROSS POSITIONING ERROR <AXIS> A GROSS POSITIOINING ERROR <AXIS> B GROSS POSITIONING ERROR <AXIS> C GROSS POSITIONING ERROR <AXIS> D GROSS POSITIONING ERROR <AXIS> E GROSS POSITIONING ERROR <AXIS> F Position Monitoring (Servo Lag) Operation with feed precontrol: position monitoring range exceeded (range defined in machine parameter 142) Operation with servo lag: servo lag monitoring range exceeded (defined in machine parameter 172) Monitoring of the Analog Voltage Limit The nominal voltage calculated by the control has reached its limit of ± 1 V (only with feed precontrol). Movement Monitoring The voltage difference calculated by the control has reached the limit programmed in the machine parameter 114. Standstill Monitoring The deviation from the nominal position of an axis in standstill has exceeded the value programmed in machine parameter 111. The nominal position was moved beyond during positioning (overshooting). Monitoring of Offset Voltage The offset voltage of 1 mv has been reached during an automatic offset adjustment with machine parameter 122. (see section 16.5) Central Drive Monitoring An error in the configuration of the central drive has been detected (e.g. two analog outputs are active simultaneously). Possible location of the error, when the error message "GROSS POSITIONING ERROR <AXIS> A/B/C/D/E/F" is generated: When this error message is generated, the error may be located in any element of the closed loop. e.g. Control error (e.g. CLP board) Excessive offset voltage at the servo amplifier Monitoring function of the servo amplifier has responded (e.g. power monitoring) Servo amplifier defective Motor, tachometer, encoder or cables defective Mechanical defect (bearings, spindle, guides) Excessive mechanical forces on a drive
14 SERVICE MANUAL TNC 36/36 Page 1 Screen Display (blinking error message) Error Cause MEASURING SYSTEM <AXIS> DEFECTIVE A MEASURING SYSTEM <AXIS> DEFECTIVE B MEASURING SYSTEM <AXIS> DEFECTIVE C A = Signal amplitude error B = Signal frequency error C =Error with distancecoded scales Possible Reasons: Encoder not connected Cable damaged Glass scale contaminated or damaged Scanning head defective Encoder monitoring system defective (CLP board) Encoder check: see section 11.3 Notes
15 SERVICE MANUAL TNC 36/36 Page 11 Screen Display (blinking error message) Error Cause WRONG REFERENCE POINT TNCOPERATING TEMPERATURE EXCEEDED EMERGENCY STOP DEFECTIVE EMERGENCY STOP PLC Wrong reference mark spacing entered with distancecoded linear encoders (counting error caused by the encoder or the LOGIC UNIT) The temperature inside the LOGIC UNIT has exceeded + 7 C. Error during the test routine for the output "Control Ready for Operation" when the machine is switched on (see section 17.4) This error message is only generated, if one of the markers (M2924 M323) is set. PLC: ERROR 1) Marker 2924 to PLC: ERROR 99 1) to Marker 323 and marker 2815 set CHECK SUM ERROR 1A 2) Wrong CRC sum NC EPROMs 1/2 CHECK SUM ERROR 1B 2) CHECK SUM ERROR 1C 2) Wrong CRC sum PLCEPROM Wrong CRC sum NC EPROMs 3/4 CRC = Cyclic Redundancy Check (during data transfer) 1) With customized PLC programs, a different dialog may be displayed instead of "PLC: ERROR...99". For further information, please contact your machine tool manufacturer. 2) If the error message "CHECK SUM ERROR YX" comes up repeatedly, please return the complete logic unit to HEIDENHAIN for repair. Indicate also the check sum error. Notes
16 SERVICE MANUAL TNC 36/36 Page Hardware Components TNC 36/36 TNC 36 1) TNC 36 2) TNC Component TNC 36 E TNC 36 C TNC 36 TNC 36 C LOGIC UNIT LE 36 Id.No x Id.No x Id.No x x LOGIC UNIT LE 36 C Id.No x Id.No x x VISUAL DISPLAY UNIT BE 212 Id.No x x FLAT SCREEN BF 11 Id.No x x KEYBOARD TE 355 A/B Id.No x x x x Id.No x x x x PLC I/O BOARD PL 4 (Optional) Id.No x x x x 1) EDM control 2) Milling control
17 SERVICE MANUAL TNC 36/36 Page LOGIC UNIT LE 36/C 5.1 Designation of the LOGIC UNIT LE 36/C Logic Unit LE 36/C without PLC I/O Board (PL 4) The PLC I/O Board PL 4 is preferrably mounted to the top of the LE.
18 SERVICE MANUAL TNC 36/36 Page Hardware Components of the LOGIC UNIT LE 36/C The LOGIC UNIT consists of the following components: Power supply Processsor board PLC board PLC I/O board PL 4 (optional) Overview of Boards and Components LE LE 36 LE 36 C PROCESSOR BOARD Id.No x Id.No x Id.No x Id.No x Id.No x x PLC BOARD Id.No x x Id.No x x x x POWER SUPPLY Id.No x x x x x x PLC I/O BOARD (optional) Id.No x x x x x x
19 SERVICE MANUAL TNC 36/36 Page Connector Designation and Pin Layout 6.1 Connectors on the LOGIC UNIT LE 36/C Connector Designation: LOGIC UNIT LE 36/C Power Processor PLC supply board board Processor board X1 = encoder 1 ( ) X2 = encoder 2 ( ) X3 = encoder 3 ( ) X4 = encoder 4 ( ) X6 = encoder S ( ) X8 = nominal value output 1, 2, 3, 4, S X9 = VDU (BE or BF) X11 = handwheel HR 13/33 X12 = touch probe system B = signal ground PLC board X21 = PLC output X22 = PLC input X23 = TNC operating panel (TE) X24 = power supply 24 V for PLC X25 = data interface V.24/RS232C X26 = PLC I/O board (PL 4) X27 = machine operating panel (MB) Power supply X31 = power supply 24 V for LE
20 SERVICE MANUAL TNC 36/36 Page Pin Layout: POWER SUPPLY X31 Power supply (NC) Terminal block (pluggable) 2pin Pin No. Assignment V 2 V Pin Layout : PROCESSOR BOARD X1, X2, X3, X4, Encoder 1, 2, 3, 4 Sinewave input Flange socket with female insert (9pin) X6 Encoder S Squarewave input Flange socket with female insert (12pin) Pin No. Assignment Pin No. Signal Ua1 2 6 Ua Ua Ua2 7 RI+ 3 Ua 8 RI 4 Ua (Up) 7 UaS 4 V (Un) 2 + 5V (sensor line) 9 internal shield V (Up) Housing external shield = housing 11 V (sensor line) 1 V (Un) 9 (via spring) shield = housing X8 Nominal Value Output 1,2,3,4,S (TNC 36) 1,2,3,4 (TNC 36) Flange socket with female insert (15pin) X9 Visual Display Unit Flange socket with female insert (15pin); interface adjustment for BE 212 or BF 11 via jumper Pin No. Signal Pin No. BE 212 BF 11 1) 1 ±1V analog output 1. axis 1, 8 V supply 2 analog input ( V) max. 2, V supply 3 ±1V analog output 2. axis 3, 5, 6 do not assign do not assign 4 ±1V analog output 5. axis 7 Video 5 ±1V analog output 3. axis 9 V SYNC V SYNC 6 V analog output 5. axis 1 H SYNC 7 ±1V analog output 4. axis 11 V signal 8 ±1V analog output Saxis 12 V signal 9 V analog output 1. axis 13 video 1 V analog input 14 H SYNC 2 11 V analog input 2. axis 15 CLOCK 13 V analog input 3. axis Housing external shield = housing 14 V analog input 4. axis 15 V analog input S. axis 1) only with C versions 12 not assigned Housing external shield = housing
21 SERVICE MANUAL TNC 36/36 Page 17 X11 Electronic Handwheel HR 13/HR 33 Flange socket with female insert (9pin) X12 Touch Probe System TS 12 (TS 111/TS 511, only via adaptor cable Flange socket with female insert (15pin) Pin No. Signal Designation Pin No. Signal Designation 1,3,5,7,9 do not assign 1 internal shield 2 GND (V) 3 ready for operation V 4 start 6 DTR V 8 RxD 6 + 5V (Up) Housing external shield 7 battery warning 8 V (Un) 9 trigger signal 1 trigger signal 1) 2, 11 to 15 not assigned 1) Stylus at rest = high level Pin Layout: PLC Board X44 Power Supply (PLC part) Terminal block (pluggable) 3pin Pin No. Assignment V_A can be switched off with EMERCENCY STOP V cannot be switched off with EMERGENCY STOP 3 V X23 TNC Operating Panel (TE) Flange socket with female insert (37pin) Pin No. Assignment 1 RL 2 SL 2 RL1 21 SL1 3 RL2 22 SL2 4 RL3 for key 23 SL3 for key 5 RL4 matrix 24 SL4 matrix 6 RL5 25 SL5 7 RL6 26 SL6 8 RL7 27 SL7 9 do not assign 28 do not assign 1 do not assign 29 do not assign 11 do not assign 3 do not assign (internally on V) 12 do not assign 31 do not assign 13 do not assign 32 do not assign 14 do not assign 33 do not assign 15 do not assign 34 spindel override (wiper) 16 do not assign 35 feed override (wiper) 17 do not assign V override potentiometer 18 do not assign 37 V override potentiometer 19 do not assign housing external shield
22 SERVICE MANUAL TNC 36/36 Page 18 X21: PLC Output X22: PLC Input Flange socket with female insert (37pin) Flange socket with female insert (37pin) Pin No. Assignment Pin No. Assignment 1 O 1 I 2 O1 2 I1 3 O2 3 I2 4 O3 4 I3 acknowledgement for test 5 O4 "Control Ready for Operation" 6 O5 5 I4 7 O6 6 I5 8 O7 7 I6 9 O8 8 I7 1 O7 9 I8 11 O1 1 I9 12 O11 11 I1 13 O12 12 I11 14 O13 13 I12 15 O14 14 I13 16 O15 15 I14 17 O16 16 I15 18 O17 17 I16 19 O18 18 I17 2 O19 19 I18 21 O2 2 I19 22 O21 21 I2 23 O22 22 I21 24 O23 23 I22 25 O24 2) 24 I23 26 O25 2) 25 I24 27 O26 2) 26 I25 28 O27 2) 27 I26 29 O28 2) 28 I27 3 O29 2) 29 I3 31 O3 2) 3 I29 32 do not assign 31 I3 33 V (PLC) 1) 32 I31 34 control ready for operation 2) 33,34 do not assign 35,36, V_A PLC 3) 35,36,37 V PLC 1) housing external shield housing external shield 1) V PLC reference potential for testing 2) Cannot be switched off with EMERGENCY STOP 3) + 24 V_A power supply for PLC testing (can be switched off)
23 SERVICE MANUAL TNC 36/36 Page 19 X25 Data Interface V.24/RS232 Flange socket with female insert (25pin) X26 PLCI/O Board (PL) Flange socket with male insert (25pin) Pin No. Assignment Pin No. Assignment 1 shield 1, 2, 3 V * 1 2 RxD 4, 5, 6, 17, 18 not assigned 3 TxD 7 RESET 4 CTS 8 WRITE EXTERN 5 RTS 9 WRITE EXTERN 6 DTR 1 A5 7 GND ( V * 2) 11 A3 8 bis 19 not assigned 12 A1 2 DSR 13 shield 21 bis 25 not assigned 14, 15, V * 1 housing external shield 19 serial IN 1 2 EMERGENCY STOP 21 serial OUT 22 serial OUT 23 A4 24 A2 25 A X27 Machine Operating Panel Flange socket with female insert (37pin) Pin No. Assignment Pin No. Assignment 1 I I146 2 I129 2 I147 3 I13 21 I148 4 I I149 5 I I15 6 I I151 7 I do not assign 8 I O 1) 9 I O1 1) 1 I O2 1) 11 I O3 1) 12 I139 3 O4 1) 13 I14 31 O5 1) 14 I O6 1) 15 I O7 1) 16 I V (PLC) 2) 17 I V (PLC) 2) 18 I V_A PLC 3) V_A PLC 3) 1) O...O7 simultaneously to X21 (PLC output) 2) V PLC reference potential for testing 3) PLC voltage supply + 24V_A routed via fuse for the inputs (can be switched off)
24 SERVICE MANUAL TNC 36/36 Page Connectors on the PLC I/O Board Connector Designation: PLC I/O Board PL 4
26 SERVICE MANUAL TNC 36/36 Page 22 X7 Assignment X1 Connection to LE Pin No. PL 4 Pin No. Assignment 1 I11 1,2,3 V 2 I19 4 serial IN 2 3 I18 5,6,17,18 not assigned 4 I17 7 RESET 5 I16 8 WRITE EXTERN 6 I15 9 WRITE EXTERN 7 I14 1 A5 8 I13 11 A3 9 I12 12 A1 1 I11 13 shield 11 I1 14,15, V 12 I99 19 serial IN 1 2 EMERGENCY STOP 21 SERIAL OUT X8 Assignment 22 SERIAL OUT Pin No. PL 4 23 A4 1 I A2 2 I A 3 I12 4 I119 5 I118 6 I117 7 I116 8 I115 9 I114 1 I I I111 X9 Pin No. Assignment PL 4 1 do not assign 2 do not assign 3 do not assign 4 I125 5 I124 6 I123 Note: * The LE 36/C is not prepared for a 2nd PL 4 to be connected!
27 SERVICE MANUAL TNC 36/36 Page Connectors on the Keyboard Units TE 355 A/B Connector Designation: TE 355 A/B TE 355 A (tall version) TE 355 B (wide version) (X1 is not used)
28 SERVICE MANUAL TNC 36/36 Page Pin Layout: Keyboard Unit TE 355 A/B X2: Connection to the Logic Unit (LE) Flange socket with male insert (37pin) Pin No. Assignment 1 RL 2 RL1 3 RL2 4 RL3 for key matrix 5 RL4 6 RL5 7 RL6 8 RL7 9 do not assign 1 do not assign 11 do not assign 12 do not assign 13 do not assign 14 do not assign 15 do not assign 16 do not assign 17 do not assign 18 do not assign 19 do not assign 2 SL 21 SL1 22 SL2 23 SL3 for key matrix 24 SL4 25 SL5 26 SL6 27 SL7 28 do not assign 29 do not assign 3 do not assign (internally on V) 31 do not assign 32 do not assign 33 do not assign 34 spindle override (wiper) 35 feed override (wiper) V for override potentiometer 37 V for override potentiometer
29 SERVICE MANUAL TNC 36/36 Page Connectors on the Visual Display Units Connectors on the Visual Display Unit BE Connector Designation Pin Layout X1: Connection to the Logic Unit (LE) Flange socket with male insert (15pin) Pin No. Signal 1 and 8 V supply 2 and V supply 3,5,6,7 not assgined 9 V SYNC 1 H SYNC 11 not assigned 12 V signal 13 VIDEO 14,15 not assigned housing external shield = housing
30 SERVICE MANUAL TNC 36/36 Page Connectors on the Flat Screen BF Connector Desgination X2 + X Pin Layout X1: Power Supply for the Flat Screen Terminal block (pluggable), 2pin Pin No. Signal V supply V supply X2: Connection to the Logic Unit (LE) Flange socket with male insert (15pin) Pin No. Signal 1 6 not assiged 7 video (P) 8 not assigned 9 V SYNC 1 not assigned 11 V signal not assigned 14 H SYNC 15 clock housing external shield = housing
31 7. Grounding Diagram SERVICE MANUAL TNC 36/36 Page 27
32 SERVICE MANUAL TNC 36/36 Page Power Supply 8.1 External Power Supply Requirements The voltages must correspond to the following definitions: Unit Supply Voltage Voltage Range D.C. Average Value NC 24V (VDE 551) lower limit 2.4 V Max. Current Consumption LE 36: 1.2A to 1.5A LE 1.8A PLC if half of the inputs/ outputs are active 24 V simultaneously PL 4 (VDE 55) upper limit 31 V 1) 21A if half of the inputs/ outputs are active simultaneously BF 11.85A with full utilization of the VDU Power Consumption 28.8W to 36W approx. 6W if approx. 1/3 of the inputs/outputs are active simultaneously approx. 25W if approx. 1/3 of the inputs/outputs are active simultaneously approx. 2 W NC Power Supply The NCpart of the LE must not be connected to the control voltage of the machine tool! It requires its own external power supply generated separately according to the German Standard VDE 551: D.C. voltage of 24 V with a permissible A.C. component (ripple voltage) of max. 1.5 Vpp (recommended filtering capacitor 1 µf/4 V) PLC Power Supply The PLC part (PLC inputs and outputs) of the LE and the PL 4 is operated with a control voltage of 24 V (of the machine tool), generated according to VDE 55 (German standard). Superimposed A.C. voltage components, arising from an noncontrolled threephase bridge connection with a ripple factor of 5% (see German standard DIN 411/1.75, section 1.2) are permissible. Thus, the highest absolute value for the upper voltage limit is 32.6 V; the smallest absolute value for the lower voltage limit is 18.5 V. The V line of the PLC power supply must be connected to the central signal ground of the machine tool (ground line > 6mm²)
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